V2.5.6 stable (#10961 )

- Fix cargo audit (#10921) - Add support for Energy Web Foundation's new chains (#10957) - Kaspersky AV whitelisting (#10919) - Avast whitelist script (#10900) - Docker images renaming (#10863) - Remove excessive warning (#10831) - Allow --nat extip:your.host.here.org (#10830) - When updating the client or when called from RPC, sleep should mean sleep (#10814) - added new ropsten-bootnode and removed old one (#10794) - ethkey no longer uses byteorder (#10786) - Do not drop the peer with None difficulty (#10772) - docs: Update Readme with TOC, Contributor Guideline. Update Cargo package descriptions (#10652)
version: stabilise v2.5 (#10857 )
2019-08-12 18:55:11 +02:00 · 2019-07-08 12:30:14 +02:00 · 2019-07-01 12:33:35 +02:00 · 2019-06-25 13:38:29 +00:00 · 2019-06-11 20:56:03 +02:00 · 2019-05-14 15:03:29 +02:00
105 changed files with 2091 additions and 821 deletions
--- a/.github/CONTRIBUTING.md
+++ b/.github/CONTRIBUTING.md
@@ -24,7 +24,42 @@ Also, try to include **steps to reproduce** the issue and expand on the **actual

 If you would like to contribute to Parity Ethereum, please **fork it**, fix bugs or implement features, and [propose a pull request](https://github.com/paritytech/parity-ethereum/compare).

-Please, refer to the [Coding Guide](https://wiki.parity.io/Coding-guide) in our wiki for more details about hacking on Parity.
+### Labels & Milestones
+
+We use [labels](https://github.com/paritytech/parity-ethereum/labels) to manage PRs and issues and communicate the state of a PR. Please familiarize yourself with them. Furthermore we are organizing issues in [milestones](https://github.com/paritytech/parity-ethereum/milestones). Best way to get started is to a pick a ticket from the current milestone tagged [`easy`](https://github.com/paritytech/parity-ethereum/labels/Q2-easy%20%F0%9F%92%83) and get going, or [`mentor`](https://github.com/paritytech/parity-ethereum/labels/Q1-mentor%20%F0%9F%95%BA) and get in contact with the mentor offering their support on that larger task.
+
+### Rules
+
+There are a few basic ground-rules for contributors (including the maintainer(s) of the project):
+
+* **No pushing directly to the master branch**.
+* **All modifications** must be made in a **pull-request** to solicit feedback from other contributors.
+* Pull-requests cannot be merged before CI runs green and two reviewers have given their approval.
+* Contributors should adhere to the [Parity Ethereum Style Guide](https://wiki.parity.io/Parity-Ethereum-Style-Guide).
+
+### Recommendations
+
+* **Non-master branch names** *should* be prefixed with a short name moniker, followed by the associated Github Issue ID (if any), and a brief description of the task using the format `<GITHUB_USERNAME>-<ISSUE_ID>-<BRIEF_DESCRIPTION>` (e.g. `gavin-123-readme`). The name moniker helps people to inquiry about their unfinished work, and the GitHub Issue ID helps your future self and other developers (particularly those who are onboarding) find out about and understand the original scope of the task, and where it fits into Parity Ethereum [Projects](https://github.com/paritytech/parity-ethereum/projects).
+* **Remove stale branches periodically**
+
+### Preparing Pull Requests
+
+* If your PR does not alter any logic (e.g. comments, dependencies, docs), then it may be tagged [`insubstantial`](https://github.com/paritytech/parity-ethereum/pulls?q=is%3Aopen+is%3Apr+label%3A%22A2-insubstantial+%F0%9F%91%B6%22).
+
+* Once a PR is ready for review please add the [`pleasereview`](https://github.com/paritytech/parity-ethereum/pulls?utf8=%E2%9C%93&q=is%3Aopen+is%3Apr+label%3A%22A0-pleasereview+%F0%9F%A4%93%22+) label.
+
+### Reviewing Pull Requests*:
+
+* At least two reviewers are required to review PRs (even for PRs tagged [`insubstantial`](https://github.com/paritytech/parity-ethereum/pulls?q=is%3Aopen+is%3Apr+label%3A%22A2-insubstantial+%F0%9F%91%B6%22)).
+
+When doing a review, make sure to look for any:
+
+* Buggy behavior.
+* Undue maintenance burden.
+* Breaking with house coding style.
+* Pessimization (i.e. reduction of speed as measured in the projects benchmarks).
+* Breaking changes should be carefuly reviewed and tagged as such so they end up in the [changelog](../CHANGELOG.md).
+* Uselessness (i.e. it does not strictly add a feature or fix a known issue).

 ## License.

--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -4,11 +4,13 @@ stages:
  - publish
  - optional

-image:                             parity/rust-parity-ethereum-build:xenial
+image:                             parity/parity-ci-linux:latest
 variables:
  GIT_STRATEGY:                    fetch
  GIT_SUBMODULE_STRATEGY:          recursive
  CI_SERVER_NAME:                  "GitLab CI"
+  CARGO_HOME:                      "/ci-cache/${CI_PROJECT_NAME}/cargo/${CI_JOB_NAME}"
+  SCCACHE_DIR:                     "/ci-cache/${CI_PROJECT_NAME}/sccache"
  CARGO_TARGET:                    x86_64-unknown-linux-gnu

 .no_git:                           &no_git # disable git strategy
@@ -30,41 +32,72 @@ variables:
    expire_in:                     1 mos
    paths:
      - artifacts/
+      - tools/

 .docker-cache-status:              &docker-cache-status
  variables:
    CARGO_HOME:                    "/ci-cache/parity-ethereum/cargo/${CI_JOB_NAME}"
+  dependencies:                    []
  before_script:
-    - SCCACHE_ERROR_LOG=/builds/parity/parity-ethereum/sccache_error.log RUST_LOG=sccache::server=debug sccache --start-server
+    - rustup show
+    - cargo --version
+    - SCCACHE_ERROR_LOG=/builds/parity/parity-ethereum/sccache_debug.log
+        RUST_LOG=sccache=debug
+        sccache --start-server
    - sccache -s
  after_script:
-    - echo "All crate-types:"
-    - grep 'parse_arguments.*--crate-type' sccache_error.log | sed -re 's/.*"--crate-type", "([^"]+)".*/\1/' | sort | uniq -c
-    - echo "Non-cacheable reasons:"
-    - grep CannotCache sccache_error.log | sed -re 's/.*CannotCache\((.+)\).*/\1/' | sort | uniq -c
+    # sccache debug info 
+    - if test -e sccache_debug.log;
+      then
+        echo "_____All crate-types:_____";
+        grep 'parse_arguments.*--crate-type' sccache_debug.log | sed -re 's/.*"--crate-type", "([^"]+)".*/\1/' | sort | uniq -c;
+        echo "_____Non-cacheable reasons:_____";
+        grep CannotCache sccache_debug.log | sed -re 's/.*CannotCache\((.+)\).*/\1/' | sort | uniq -c;
+      else
+        echo "_____No logs from sccache_____";
+        exit 0;
+      fi
  tags:
    - linux-docker

+.build-on-linux:                   &build-on-linux
+  stage:                           build
+  <<:                              *docker-cache-status
+  <<:                              *collect_artifacts
+  script:
+    - scripts/gitlab/build-linux.sh
+    - sccache -s
+  after_script:
+    - mkdir -p tools
+    - cp -r scripts/docker/hub/* ./tools
+    - cp scripts/gitlab/publish-snap.sh ./tools
+    - cp scripts/gitlab/publish-onchain.sh ./tools
+    - cp scripts/gitlab/safe-curl.sh ./tools
+    - echo v"$(sed -r -n '1,/^version/s/^version\s*=\s*"([^"]+)".*$/\1/p' Cargo.toml)" |
+      tee ./tools/VERSION
+    - echo "$(sed -r -n '1,/^track/s/^track\s*=\s*"([^"]+)".*$/\1/p' ./util/version/Cargo.toml)" |
+      tee ./tools/TRACK
+

 cargo-check 0 3:
  stage:                           test
  <<:                              *docker-cache-status
  script:
-    - time cargo check --target $CARGO_TARGET --locked --no-default-features
+    - time cargo check --target $CARGO_TARGET --locked --no-default-features --verbose --color=always
    - sccache -s

 cargo-check 1 3:
  stage:                           test
  <<:                              *docker-cache-status
  script:
-    - time cargo check --target $CARGO_TARGET --locked --manifest-path util/io/Cargo.toml --no-default-features
+    - time cargo check --target $CARGO_TARGET --locked --manifest-path util/io/Cargo.toml --no-default-features --verbose --color=always
    - sccache -s

 cargo-check 2 3:
  stage:                           test
  <<:                              *docker-cache-status
  script:
-    - time cargo check --target $CARGO_TARGET --locked --manifest-path util/io/Cargo.toml --features "mio"
+    - time cargo check --target $CARGO_TARGET --locked --manifest-path util/io/Cargo.toml --features "mio" --verbose --color=always
    - sccache -s

 cargo-audit:
@@ -72,7 +105,7 @@ cargo-audit:
  <<:                              *docker-cache-status
  script:
    - cargo audit
-    - sccache -s
+  allow_failure:                   true # failed cargo audit shouldn't prevent a PR from being merged

 validate-chainspecs:
  stage:                           test
@@ -92,55 +125,64 @@ test-linux:
  stage:                           build
  <<:                              *docker-cache-status
  script:
-    - ./scripts/gitlab/test-linux.sh
+    - ./scripts/gitlab/test-linux.sh stable
    - sccache -s

-build-android:
-  stage:                           build
-  image:                           parity/rust-parity-ethereum-android-build:stretch
-  variables:
-    CARGO_TARGET:                  armv7-linux-androideabi
-  <<:                              *docker-cache-status
-  <<:                              *collect_artifacts
-  script:
-    - scripts/gitlab/build-linux.sh
-  tags:
-    - linux-docker
-
-build-linux:                       &build-linux
+test-linux-beta:
  stage:                           build
  only:                            *releaseable_branches
  <<:                              *docker-cache-status
-  <<:                              *collect_artifacts
  script:
-    - scripts/gitlab/build-linux.sh
+    - ./scripts/gitlab/test-linux.sh beta
    - sccache -s

+test-linux-nightly:
+  stage:                           build
+  only:                            *releaseable_branches
+  <<:                              *docker-cache-status
+  script:
+    - ./scripts/gitlab/test-linux.sh nightly
+    - sccache -s
+  allow_failure:                   true
+
+build-android:
+  <<:                              *build-on-linux
+  image:                           parity/parity-ci-android:stretch
+  variables:
+    CARGO_TARGET:                  armv7-linux-androideabi
+
+build-linux:
+  <<:                              *build-on-linux
+  # only:                            *releaseable_branches
+
 build-linux-i386:
-  <<:                              *build-linux
-  image:                           parity/rust-parity-ethereum-build:i386
+  <<:                              *build-on-linux
+  only:                            *releaseable_branches
+  image:                           parity/parity-ci-i386:latest
  variables:
    CARGO_TARGET:                  i686-unknown-linux-gnu

 build-linux-arm64:
-  <<:                              *build-linux
-  image:                           parity/rust-parity-ethereum-build:arm64
+  <<:                              *build-on-linux
+  only:                            *releaseable_branches
+  image:                           parity/parity-ci-arm64:latest
  variables:
    CARGO_TARGET:                  aarch64-unknown-linux-gnu

 build-linux-armhf:
-  <<:                              *build-linux
-  image:                           parity/rust-parity-ethereum-build:armhf
+  <<:                              *build-on-linux
+  only:                            *releaseable_branches
+  image:                           parity/parity-ci-armhf:latest
  variables:
    CARGO_TARGET:                  armv7-unknown-linux-gnueabihf

 build-darwin:
  stage:                           build
-  only:                            *releaseable_branches
  <<:                              *collect_artifacts
+  only:                            *releaseable_branches
  variables:
    CARGO_TARGET:                  x86_64-apple-darwin
-    CARGO_HOME:                      "${CI_PROJECT_DIR}/.cargo"
+    CARGO_HOME:                    "${CI_PROJECT_DIR}/.cargo"
    CC:                            gcc
    CXX:                           g++
  script:
@@ -163,19 +205,35 @@ build-windows:

 publish-docker:
  stage:                           publish
+  <<:                              *no_git
  only:                            *releaseable_branches
-  cache:                           {}
+  except:
+    variables:
+      - $SCHEDULE_TAG == "nightly"
  dependencies:
    - build-linux
-  tags:
-    - shell
+  environment:
+    name: parity-build
+  cache:                           {}
+  image:                           docker:stable
+  services:
+    - docker:dind
+  variables:
+    DOCKER_HOST:                   tcp://localhost:2375
+    DOCKER_DRIVER:                 overlay2
+    GIT_STRATEGY:                  none
+    # DOCKERFILE:                  tools/Dockerfile
+    # CONTAINER_IMAGE:             parity/parity 
  script:
-    - scripts/gitlab/publish-docker.sh parity
+    # we stopped pushing nightlies to dockerhub, will push to own registry prb.
+    - ./tools/publish-docker.sh
+  tags:
+    - kubernetes-parity-build

 publish-snap:                      &publish-snap
  stage:                           publish
+  <<:                              *no_git
  only:                            *releaseable_branches
-  <<:                              *collect_artifacts
  image:                           snapcore/snapcraft
  variables:
    BUILD_ARCH:                    amd64
@@ -185,12 +243,13 @@ publish-snap:                      &publish-snap
  tags:
    - linux-docker
  script:
-    - scripts/gitlab/publish-snap.sh
+    - ./tools/publish-snap.sh

 publish-snap-i386:
  <<:                              *publish-snap
  variables:
    BUILD_ARCH:                    i386
+    CARGO_TARGET:                  i686-unknown-linux-gnu
  dependencies:
    - build-linux-i386

@@ -198,6 +257,7 @@ publish-snap-arm64:
  <<:                              *publish-snap
  variables:
    BUILD_ARCH:                    arm64
+    CARGO_TARGET:                  aarch64-unknown-linux-gnu
  dependencies:
    - build-linux-arm64

@@ -205,11 +265,13 @@ publish-snap-armhf:
  <<:                              *publish-snap
  variables:
    BUILD_ARCH:                    armhf
+    CARGO_TARGET:                  armv7-unknown-linux-gnueabihf
  dependencies:
    - build-linux-armhf

 publish-onchain:
  stage:                           publish
+  <<:                              *no_git
  only:                            *releaseable_branches
  cache:                           {}
  dependencies:
@@ -217,7 +279,7 @@ publish-onchain:
    - build-darwin
    - build-windows
  script:
-    - scripts/gitlab/publish-onchain.sh
+    - ./tools/publish-onchain.sh
  tags:
    - linux-docker

@@ -248,14 +310,31 @@ publish-awss3-release:
    - linux-docker

 publish-docs:
-  stage:                            publish
-  image:                            parity/rust-parity-ethereum-docs:xenial
+  stage:                           publish
+  image:                           parity/parity-ci-docs:latest
  only:
    - tags
  except:
    - nightly
-  cache:                            {}
+  cache:                           {}
+  dependencies:                    []
  script:
    - scripts/gitlab/publish-docs.sh
  tags:
    - linux-docker
+  allow_failure:                   true
+
+publish-av-whitelist:
+  stage:                          publish
+  <<:                             *no_git
+  only:                           *releaseable_branches
+  except:
+    variables:
+      - $SCHEDULE_TAG == "nightly"
+  cache:                          {}
+  dependencies:
+    - build-windows
+  script:
+    - scripts/gitlab/publish-av-whitelists.sh
+  tags:
+    - linux-docker
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,164 +1,95 @@
-## Parity-Ethereum [v2.4.3](https://github.com/paritytech/parity-ethereum/releases/tag/v2.4.3) (2019-03-22)
+## Parity-Ethereum [v2.5.6](https://github.com/paritytech/parity-ethereum/releases/tag/v2.5.5)

-Parity-Ethereum 2.4.3-beta is a bugfix release that improves performance and stability. This patch release contains a critical bug fix where serving light clients previously led to client crashes. Upgrading is highly recommended.
+Parity-Ethereum v2.5.6-stable is a bugfix release that improves stability.
+
+* Allow specifying hostnames for node URLs
+* Fix a bug where archive nodes were losing peers

 The full list of included changes:
- 2.4.3 beta backports ([#10508](https://github.com/paritytech/parity-ethereum/pull/10508))
-  - Version: bump beta
-  - Add additional request tests ([#10503](https://github.com/paritytech/parity-ethereum/pull/10503))

-## Parity-Ethereum [v2.4.2](https://github.com/paritytech/parity-ethereum/releases/tag/v2.4.2) (2019-03-20)
+* Kaspersky AV whitelisting (#10919)
+* Avast whitelist script (#10900) 
+* Docker images renaming (#10863) 
+* Remove excessive warning (#10831) 
+* Allow --nat extip:your.host.here.org (#10830) 
+* When updating the client or when called from RPC, sleep should mean sleep (#10814)
+* added new ropsten-bootnode and removed old one (#10794)
+* ethkey no longer uses byteorder (#10786) 
+* Do not drop the peer with None difficulty (#10772)
+* docs: Update Readme with TOC, Contributor Guideline. Update Cargo package descriptions (#10652)

-Parity-Ethereum 2.4.2-beta is a bugfix release that improves performance and stability.
+## Parity-Ethereum [v2.5.5](https://github.com/paritytech/parity-ethereum/releases/tag/v2.5.5)
+
+Parity-Ethereum v2.5.5-stable is a minor release that improves performance and stability.
+This release stabilises the 2.5 branch.
+
+As of today, Parity-Ethereum 2.4 reaches end of life and everyone is
+encouraged to upgrade.
+
+## Parity-Ethereum [v2.5.4](https://github.com/paritytech/parity-ethereum/releases/tag/v2.5.4)
+
+Parity Ethereum v2.5.4-beta is a security update that addresses servo/rust-smallvec#148

 The full list of included changes:
- 2.4.2 beta backports ([#10488](https://github.com/paritytech/parity-ethereum/pull/10488))
-  - Version: bump beta
-  - Сaching through docker volume ([#10477](https://github.com/paritytech/parity-ethereum/pull/10477))
-  - fix win&mac build ([#10486](https://github.com/paritytech/parity-ethereum/pull/10486))
-  - fix(extract `timestamp_checked_add` as lib) ([#10383](https://github.com/paritytech/parity-ethereum/pull/10383))

-## Parity-Ethereum [v2.4.1](https://github.com/paritytech/parity-ethereum/releases/tag/v2.4.1) (2019-03-19)
+* cargo update -p smallvec ([#10822](https://github.com/paritytech/parity-ethereum/pull/10822))

-Parity-Ethereum 2.4.1-beta is a bugfix release that improves performance and stability.
+## Parity-Ethereum [v2.5.3](https://github.com/paritytech/parity-ethereum/releases/tag/v2.5.3)
+
+Parity-Ethereum 2.5.3-beta is a bugfix release that improves performance and stability.
+
+* EthereumClassic: activate the Atlantis Hardfork
+* Clique: fix time overflow
+* State tests: treat empty accounts the same as non-existant accounts (EIP 1052)
+* Networking: support discovery-only peers (geth bootnodes)
+* Snapshotting: fix unclean shutdown while snappshotting is under way

 The full list of included changes:
- 2.4.1 beta backports ([#10471](https://github.com/paritytech/parity-ethereum/pull/10471))
-  - Version: bump beta
-  - Implement parity_versionInfo & parity_setChain on LC; fix parity_setChain ([#10312](https://github.com/paritytech/parity-ethereum/pull/10312))
-  - CI publish to aws ([#10446](https://github.com/paritytech/parity-ethereum/pull/10446))
-  - CI aws git checkout ([#10451](https://github.com/paritytech/parity-ethereum/pull/10451))
-  - Revert "CI aws git checkout ([#10451](https://github.com/paritytech/parity-ethereum/pull/10451))" ([#10456](https://github.com/paritytech/parity-ethereum/pull/10456))
-  - Tests parallelized ([#10452](https://github.com/paritytech/parity-ethereum/pull/10452))
-  - Ensure static validator set changes are recognized ([#10467](https://github.com/paritytech/parity-ethereum/pull/10467))

-## Parity-Ethereum [v2.4.0](https://github.com/paritytech/parity-ethereum/releases/tag/v2.4.0) (2019-02-25)
+* ethcore/res: activate atlantis classic hf on block 8772000 ([#10766](https://github.com/paritytech/parity-ethereum/pull/10766))
+* fix docker tags for publishing ([#10741](https://github.com/paritytech/parity-ethereum/pull/10741))
+* fix: aura don't add `SystemTime::now()` ([#10720](https://github.com/paritytech/parity-ethereum/pull/10720))
+* Treat empty account the same as non-exist accounts in EIP-1052 ([#10775](https://github.com/paritytech/parity-ethereum/pull/10775))
+* DevP2p: Get node IP address and udp port from Socket, if not included in PING packet ([#10705](https://github.com/paritytech/parity-ethereum/pull/10705))
+* Add a way to signal shutdown to snapshotting threads ([#10744](https://github.com/paritytech/parity-ethereum/pull/10744))

-Parity-Ethereum 2.4.0-beta is our trifortnightly minor version release coming with a lot of new features as well as bugfixes and performance improvements.
+## Parity-Ethereum [v2.5.2](https://github.com/paritytech/parity-ethereum/releases/tag/v2.5.2)

-Notable changes:
- Account management is now deprecated ([#10213](https://github.com/paritytech/parity-ethereum/pull/10213))
- Local accounts can now be specified via CLI ([#9960](https://github.com/paritytech/parity-ethereum/pull/9960))
- Chains can now be reset to a particular block via CLI ([#9782](https://github.com/paritytech/parity-ethereum/pull/9782))
- Ethash now additionally implements ProgPoW ([#9762](https://github.com/paritytech/parity-ethereum/pull/9762))
- The `eip1283DisableTransition` flag was added to revert EIP-1283 ([#10214](https://github.com/paritytech/parity-ethereum/pull/10214))
+Parity-Ethereum 2.5.2-beta is a bugfix release that improves performance and stability.
+
+Among others, it enables the _Atlantis_ hardfork on **Morden** and **Kotti** Classic networks.

 The full list of included changes:
- More Backports for Beta 2.4.0 ([#10431](https://github.com/paritytech/parity-ethereum/pull/10431))
-  - Revert some changes, could be buggy ([#10399](https://github.com/paritytech/parity-ethereum/pull/10399))
-  - Ci: clean up gitlab-ci.yml leftovers from previous merge ([#10429](https://github.com/paritytech/parity-ethereum/pull/10429))
-  - 10000 > 5000 ([#10422](https://github.com/paritytech/parity-ethereum/pull/10422))
-  - Fix underflow in pip, closes [#10419](https://github.com/paritytech/parity-ethereum/pull/10419) ([#10423](https://github.com/paritytech/parity-ethereum/pull/10423))
-  - Fix panic when logging directory does not exist, closes [#10420](https://github.com/paritytech/parity-ethereum/pull/10420) ([#10424](https://github.com/paritytech/parity-ethereum/pull/10424))
-  - Update hardcoded headers for Foundation, Ropsten, Kovan and Classic ([#10417](https://github.com/paritytech/parity-ethereum/pull/10417))
- Backports for Beta 2.4.0 ([#10416](https://github.com/paritytech/parity-ethereum/pull/10416))
-  - No-git for publish jobs, empty artifacts dir ([#10393](https://github.com/paritytech/parity-ethereum/pull/10393))
-  - Snap: reenable i386, arm64, armhf architecture publishing ([#10386](https://github.com/paritytech/parity-ethereum/pull/10386))
-  - Tx pool: always accept local transactions ([#10375](https://github.com/paritytech/parity-ethereum/pull/10375))
-  - Fix to_pod storage trie value decoding ([#10368](https://github.com/paritytech/parity-ethereum/pull/10368))
- Version: mark 2.4.0 beta
- Update to latest mem-db, hash-db and trie-db. ([#10314](https://github.com/paritytech/parity-ethereum/pull/10314))
- Tx pool: always accept local transactions ([#10375](https://github.com/paritytech/parity-ethereum/pull/10375))
- Fix(trace_main! macro): don't re-export ([#10384](https://github.com/paritytech/parity-ethereum/pull/10384))
- Exchanged old(azure) bootnodes with new(ovh) ones ([#10309](https://github.com/paritytech/parity-ethereum/pull/10309))
- Ethash: implement Progpow ([#9762](https://github.com/paritytech/parity-ethereum/pull/9762))
- Snap: add the removable-media plug ([#10377](https://github.com/paritytech/parity-ethereum/pull/10377))
- Add message to IO errors ([#10324](https://github.com/paritytech/parity-ethereum/pull/10324))
- Chore(bump parity-daemonize): require rust >= 1.31 ([#10359](https://github.com/paritytech/parity-ethereum/pull/10359))
- Secretstore: use in-memory transport in cluster tests ([#9850](https://github.com/paritytech/parity-ethereum/pull/9850))
- Add fields to `memzero`'s Cargo.toml ([#10362](https://github.com/paritytech/parity-ethereum/pull/10362))
- Snap: release untagged versions from branches to the candidate snap channel ([#10357](https://github.com/paritytech/parity-ethereum/pull/10357))
- Fix(compilation warns): `no-default-features` ([#10346](https://github.com/paritytech/parity-ethereum/pull/10346))
- No volumes are needed, just run -v volume:/path/in/the/container ([#10345](https://github.com/paritytech/parity-ethereum/pull/10345))
- Fixed misstype ([#10351](https://github.com/paritytech/parity-ethereum/pull/10351))
- Snap: prefix version and populate candidate channel ([#10343](https://github.com/paritytech/parity-ethereum/pull/10343))
- Bundle protocol and packet_id together in chain sync ([#10315](https://github.com/paritytech/parity-ethereum/pull/10315))
- Role back docker build image and docker deploy image to ubuntu:xenial… ([#10338](https://github.com/paritytech/parity-ethereum/pull/10338))
- Change docker image based on debian instead of ubuntu due to the chan… ([#10336](https://github.com/paritytech/parity-ethereum/pull/10336))
- Don't add discovery initiators to the node table ([#10305](https://github.com/paritytech/parity-ethereum/pull/10305))
- Fix(docker): fix not receives SIGINT ([#10059](https://github.com/paritytech/parity-ethereum/pull/10059))
- Snap: official image / test ([#10168](https://github.com/paritytech/parity-ethereum/pull/10168))
- Fix(add helper for timestamp overflows) ([#10330](https://github.com/paritytech/parity-ethereum/pull/10330))
- Additional error for invalid gas ([#10327](https://github.com/paritytech/parity-ethereum/pull/10327))
- Revive parity_setMinGasPrice RPC call ([#10294](https://github.com/paritytech/parity-ethereum/pull/10294))
- Add Statetest support for Constantinople Fix ([#10323](https://github.com/paritytech/parity-ethereum/pull/10323))
- Fix(parity-clib): grumbles that were not addressed in [#9920](https://github.com/paritytech/parity-ethereum/pull/9920) ([#10154](https://github.com/paritytech/parity-ethereum/pull/10154))
- Fix(light-rpc): Make `light_sync` generic ([#10238](https://github.com/paritytech/parity-ethereum/pull/10238))
- Fix publish job ([#10317](https://github.com/paritytech/parity-ethereum/pull/10317))
- Secure WS-RPC: grant access to all apis ([#10246](https://github.com/paritytech/parity-ethereum/pull/10246))
- Make specification of protocol in SyncRequester::send_request explicit ([#10295](https://github.com/paritytech/parity-ethereum/pull/10295))
- Fix: parity-clib/examples/cpp/CMakeLists.txt ([#10313](https://github.com/paritytech/parity-ethereum/pull/10313))
- Ci optimizations ([#10297](https://github.com/paritytech/parity-ethereum/pull/10297))
- Increase number of requested block bodies in chain sync ([#10247](https://github.com/paritytech/parity-ethereum/pull/10247))
- Deprecate account management ([#10213](https://github.com/paritytech/parity-ethereum/pull/10213))
- Properly handle check_epoch_end_signal errors ([#10015](https://github.com/paritytech/parity-ethereum/pull/10015))
- Fix(osx and windows builds): bump parity-daemonize ([#10291](https://github.com/paritytech/parity-ethereum/pull/10291))
- Add missing step for Using `systemd` service file ([#10175](https://github.com/paritytech/parity-ethereum/pull/10175))
- Call private contract methods from another private contract (read-onl… ([#10086](https://github.com/paritytech/parity-ethereum/pull/10086))
- Update ring to 0.14 ([#10262](https://github.com/paritytech/parity-ethereum/pull/10262))
- Fix(secret-store): deprecation warning ([#10301](https://github.com/paritytech/parity-ethereum/pull/10301))
- Update to jsonrpc-derive 10.0.2, fixes aliases bug ([#10300](https://github.com/paritytech/parity-ethereum/pull/10300))
- Convert to jsonrpc-derive, use jsonrpc-* from crates.io ([#10298](https://github.com/paritytech/parity-ethereum/pull/10298))
- Fix Windows build ([#10284](https://github.com/paritytech/parity-ethereum/pull/10284))
- Don't run the CPP example on CI ([#10285](https://github.com/paritytech/parity-ethereum/pull/10285))
- Additional tests for uint deserialization. ([#10279](https://github.com/paritytech/parity-ethereum/pull/10279))
- Prevent silent errors in daemon mode ([#10007](https://github.com/paritytech/parity-ethereum/pull/10007))
- Fix join-set test to be deterministic. ([#10263](https://github.com/paritytech/parity-ethereum/pull/10263))
- Update CHANGELOG-2.2.md ([#10254](https://github.com/paritytech/parity-ethereum/pull/10254))
- Macos heapsize force jemalloc ([#10234](https://github.com/paritytech/parity-ethereum/pull/10234))
- Allow specifying local accounts via CLI ([#9960](https://github.com/paritytech/parity-ethereum/pull/9960))
- Take in account zero gas price certification when doing transact_cont… ([#10232](https://github.com/paritytech/parity-ethereum/pull/10232))
- Update CHANGELOG.md ([#10249](https://github.com/paritytech/parity-ethereum/pull/10249))
- Fix typo: CHANGELOG-2.1 -> CHANGELOG-2.2 ([#10233](https://github.com/paritytech/parity-ethereum/pull/10233))
- Update copyright year to 2019. ([#10181](https://github.com/paritytech/parity-ethereum/pull/10181))
- Fixed: types::transaction::SignedTransaction; ([#10229](https://github.com/paritytech/parity-ethereum/pull/10229))
- Fix(ManageNetwork): replace Range with RangeInclusive ([#10209](https://github.com/paritytech/parity-ethereum/pull/10209))
- Import rpc transactions sequentially ([#10051](https://github.com/paritytech/parity-ethereum/pull/10051))
- Enable St-Peters-Fork ("Constantinople Fix") ([#10223](https://github.com/paritytech/parity-ethereum/pull/10223))
- Add EIP-1283 disable transition ([#10214](https://github.com/paritytech/parity-ethereum/pull/10214))
- Echo CORS request headers by default ([#10221](https://github.com/paritytech/parity-ethereum/pull/10221))
- Happy New Year! ([#10211](https://github.com/paritytech/parity-ethereum/pull/10211))
- Perform stripping during build ([#10208](https://github.com/paritytech/parity-ethereum/pull/10208))
- Remove CallContract and RegistryInfo re-exports from `ethcore/client` ([#10205](https://github.com/paritytech/parity-ethereum/pull/10205))
- Extract CallContract and RegistryInfo traits into their own crate ([#10178](https://github.com/paritytech/parity-ethereum/pull/10178))
- Update the changelogs for 2.1.11, 2.2.6, 2.2.7, and 2.3.0 ([#10197](https://github.com/paritytech/parity-ethereum/pull/10197))
- Cancel Constantinople HF on POA Core ([#10198](https://github.com/paritytech/parity-ethereum/pull/10198))
- Adds cli interface to allow reseting chain to a particular block ([#9782](https://github.com/paritytech/parity-ethereum/pull/9782))
- Run all `igd` methods in its own thread ([#10195](https://github.com/paritytech/parity-ethereum/pull/10195))
- Pull constantinople on ethereum network ([#10189](https://github.com/paritytech/parity-ethereum/pull/10189))
- Update for Android cross-compilation. ([#10180](https://github.com/paritytech/parity-ethereum/pull/10180))
- Version: bump fork blocks for kovan and foundation ([#10186](https://github.com/paritytech/parity-ethereum/pull/10186))
- Handle the case for contract creation on an empty but exist account w… ([#10065](https://github.com/paritytech/parity-ethereum/pull/10065))
- Align personal_unlockAccount behaviour when permanent unlock is disab… ([#10060](https://github.com/paritytech/parity-ethereum/pull/10060))
- Drop `runtime` after others (especially `ws_server`) ([#10179](https://github.com/paritytech/parity-ethereum/pull/10179))
- Version: bump nightly to 2.4 ([#10165](https://github.com/paritytech/parity-ethereum/pull/10165))
- Skip locking in statedb for non-canon blocks ([#10141](https://github.com/paritytech/parity-ethereum/pull/10141))
- Remove reference to ui-interface command-line option ([#10170](https://github.com/paritytech/parity-ethereum/pull/10170))
- Fix [#9822](https://github.com/paritytech/parity-ethereum/pull/9822): trace_filter does not return failed contract creation ([#10140](https://github.com/paritytech/parity-ethereum/pull/10140))
- Fix _cannot recursively call into `Core`_ issue ([#10144](https://github.com/paritytech/parity-ethereum/pull/10144))
- Fix(whisper): correct PoW calculation ([#10166](https://github.com/paritytech/parity-ethereum/pull/10166))
- Bump JSON-RPC ([#10151](https://github.com/paritytech/parity-ethereum/pull/10151))
- Ping nodes from discovery ([#10167](https://github.com/paritytech/parity-ethereum/pull/10167))
- Fix(android): remove dependency to libusb ([#10161](https://github.com/paritytech/parity-ethereum/pull/10161))
- Refactor(trim_right_matches -> trim_end_matches) ([#10159](https://github.com/paritytech/parity-ethereum/pull/10159))
- Merge Machine and WithRewards ([#10071](https://github.com/paritytech/parity-ethereum/pull/10071))

-## Previous releases
+* [CI] allow cargo audit to fail ([#10676](https://github.com/paritytech/parity-ethereum/pull/10676))
+* Reset blockchain properly ([#10669](https://github.com/paritytech/parity-ethereum/pull/10669))
+* new image ([#10673](https://github.com/paritytech/parity-ethereum/pull/10673))
+* Update publishing ([#10644](https://github.com/paritytech/parity-ethereum/pull/10644))
+* enable lto for release builds ([#10717](https://github.com/paritytech/parity-ethereum/pull/10717))
+* Use RUSTFLAGS to set the optimization level ([#10719](https://github.com/paritytech/parity-ethereum/pull/10719))
+* ethcore: enable ECIP-1054 for classic ([#10731](https://github.com/paritytech/parity-ethereum/pull/10731))
+
+## Parity-Ethereum [v2.5.1](https://github.com/paritytech/parity-ethereum/releases/tag/v2.5.1)
+
+Parity-Ethereum 2.5.1-beta is a bugfix release that improves performance and stability. 
+
+Among others, it enables the Petersburg hardfork on **Rinkeby** and **POA-Core** Network, as well as the **Kovan** Network community hardfork.
+
+The full list of included changes:
+
+* ci: publish docs debug ([#10638](https://github.com/paritytech/parity-ethereum/pull/10638))
+
+## Parity-Ethereum [v2.5.0](https://github.com/paritytech/parity-ethereum/releases/tag/v2.5.0)
+
+Parity-Ethereum 2.5.0-beta is a minor release that improves performance and stabilizes the 2.5 branch by marking it as beta release. 
+
+- This release adds support for the Clique consensus engine ([#9981](https://github.com/paritytech/parity-ethereum/pull/9981))
+  - This enables Parity-Ethereum users to use the Görli, the Kotti Classic, and the legacy Rinkeby testnet. To get started try `parity --chain goerli`; note that light client support is currently not yet fully functional.
+- This release removes the dead chain configs for Easthub and Ethereum Social ([#10531](https://github.com/paritytech/parity-ethereum/pull/10531))
+
+As of today, Parity-Ethereum 2.3 reaches end of life and everyone is encouraged to upgrade.
+
+The full list of included changes:
+
+* fix(light cull): poll light cull instead of timer ([#10559](https://github.com/paritytech/parity-ethereum/pull/10559))

- [CHANGELOG-2.3](docs/CHANGELOG-2.3.md) (_stable_)
- [CHANGELOG-2.2](docs/CHANGELOG-2.2.md) (EOL: 2019-02-25)
- [CHANGELOG-2.1](docs/CHANGELOG-2.1.md) (EOL: 2019-01-16)
- [CHANGELOG-2.0](docs/CHANGELOG-2.0.md) (EOL: 2018-11-15)
- [CHANGELOG-1.11](docs/CHANGELOG-1.11.md) (EOL: 2018-09-19)
- [CHANGELOG-1.10](docs/CHANGELOG-1.10.md) (EOL: 2018-07-18)
- [CHANGELOG-1.9](docs/CHANGELOG-1.9.md) (EOL: 2018-05-09)
- [CHANGELOG-1.8](docs/CHANGELOG-1.8.md) (EOL: 2018-03-22)
- [CHANGELOG-1.7](docs/CHANGELOG-1.7.md) (EOL: 2018-01-25)
- [CHANGELOG-1.6](docs/CHANGELOG-1.6.md) (EOL: 2017-10-15)
- [CHANGELOG-1.5](docs/CHANGELOG-1.5.md) (EOL: 2017-07-28)
- [CHANGELOG-1.4](docs/CHANGELOG-1.4.md) (EOL: 2017-03-13)
- [CHANGELOG-1.3](docs/CHANGELOG-1.3.md) (EOL: 2017-01-19)
- [CHANGELOG-1.2](docs/CHANGELOG-1.2.md) (EOL: 2016-11-07)
- [CHANGELOG-1.1](docs/CHANGELOG-1.1.md) (EOL: 2016-08-12)
- [CHANGELOG-1.0](docs/CHANGELOG-1.0.md) (EOL: 2016-06-24)
- [CHANGELOG-0.9](docs/CHANGELOG-0.9.md) (EOL: 2016-05-02)
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -357,102 +357,34 @@ dependencies = [
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- "smallvec 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)",
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@@ -1282,6 +1214,7 @@ dependencies = [
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 "log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
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@@ -1545,7 +1478,7 @@ dependencies = [
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- "protobuf 1.7.4 (registry+https://github.com/rust-lang/crates.io-index)",
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@@ -2138,8 +2071,11 @@ dependencies = [

 [[package]]
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-version = "0.2.1"
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 source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "rustc_version 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
+]

 [[package]]
 name = "memory-cache"
@@ -2342,10 +2278,19 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
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- "rand 0.3.22 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)",
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+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "num-integer 0.1.39 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-traits 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
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@@ -2447,7 +2392,7 @@ dependencies = [
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- "parity-ethereum 2.5.0",
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@@ -2477,7 +2422,7 @@ dependencies = [

 [[package]]
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@@ -2530,7 +2475,7 @@ dependencies = [
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 "parity-runtime 0.1.0",
 "parity-updater 1.12.0",
- "parity-version 2.5.0",
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@@ -2673,7 +2618,7 @@ dependencies = [
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 "parity-updater 1.12.0",
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@@ -2781,7 +2726,7 @@ dependencies = [

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- "smallvec 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)",
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@@ -2881,7 +2826,7 @@ dependencies = [
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- "smallvec 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "smallvec 0.6.10 (registry+https://github.com/rust-lang/crates.io-index)",
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@@ -2895,7 +2840,7 @@ dependencies = [
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- "smallvec 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)",
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 [[package]]
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 [[package]]
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- "rayon-core 1.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
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 [[package]]
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@@ -3470,6 +3416,11 @@ name = "scopeguard"
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 source = "registry+https://github.com/rust-lang/crates.io-index"

+[[package]]
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+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
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@@ -3594,11 +3545,8 @@ source = "registry+https://github.com/rust-lang/crates.io-index"

 [[package]]
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-version = "0.6.5"
+version = "0.6.10"
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 [[package]]
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@@ -3963,7 +3911,7 @@ name = "tokio-threadpool"
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 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "crossbeam-deque 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)",
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@@ -4066,7 +4014,7 @@ name = "trezor-sys"
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 dependencies = [
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+ "protobuf 1.7.5 (registry+https://github.com/rust-lang/crates.io-index)",
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 [[package]]
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@@ -4676,7 +4619,7 @@ dependencies = [
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@@ -4693,8 +4636,8 @@ dependencies = [
 "checksum rand_isaac 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "ded997c9d5f13925be2a6fd7e66bf1872597f759fd9dd93513dd7e92e5a5ee08"
 "checksum rand_pcg 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "086bd09a33c7044e56bb44d5bdde5a60e7f119a9e95b0775f545de759a32fe05"
 "checksum rand_xorshift 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "effa3fcaa47e18db002bdde6060944b6d2f9cfd8db471c30e873448ad9187be3"
-"checksum rayon 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)" = "df7a791f788cb4c516f0e091301a29c2b71ef680db5e644a7d68835c8ae6dbfa"
-"checksum rayon-core 1.4.1 (registry+https://github.com/rust-lang/crates.io-index)" = "b055d1e92aba6877574d8fe604a63c8b5df60f60e5982bf7ccbb1338ea527356"
+"checksum rayon 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "a4b0186e22767d5b9738a05eab7c6ac90b15db17e5b5f9bd87976dd7d89a10a4"
+"checksum rayon-core 1.5.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ebbe0df8435ac0c397d467b6cad6d25543d06e8a019ef3f6af3c384597515bd2"
 "checksum redox_syscall 0.1.40 (registry+https://github.com/rust-lang/crates.io-index)" = "c214e91d3ecf43e9a4e41e578973adeb14b474f2bee858742d127af75a0112b1"
 "checksum redox_termios 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "7e891cfe48e9100a70a3b6eb652fef28920c117d366339687bd5576160db0f76"
 "checksum regex 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)" = "9329abc99e39129fcceabd24cf5d85b4671ef7c29c50e972bc5afe32438ec384"
@@ -4720,6 +4663,7 @@ dependencies = [
 "checksum same-file 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)" = "10f7794e2fda7f594866840e95f5c5962e886e228e68b6505885811a94dd728c"
 "checksum scoped-tls 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "332ffa32bf586782a3efaeb58f127980944bbc8c4d6913a86107ac2a5ab24b28"
 "checksum scopeguard 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)" = "94258f53601af11e6a49f722422f6e3425c52b06245a5cf9bc09908b174f5e27"
+"checksum scopeguard 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "b42e15e59b18a828bbf5c58ea01debb36b9b096346de35d941dcb89009f24a0d"
 "checksum sct 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)" = "2f5adf8fbd58e1b1b52699dc8bed2630faecb6d8c7bee77d009d6bbe4af569b9"
 "checksum semver 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)" = "1d7eb9ef2c18661902cc47e535f9bc51b78acd254da71d375c2f6720d9a40403"
 "checksum semver-parser 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "388a1df253eca08550bef6c72392cfe7c30914bf41df5269b68cbd6ff8f570a3"
@@ -4737,7 +4681,7 @@ dependencies = [
 "checksum slab 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "6dbdd334bd28d328dad1c41b0ea662517883d8880d8533895ef96c8003dec9c4"
 "checksum slab 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "17b4fcaed89ab08ef143da37bc52adbcc04d4a69014f4c1208d6b51f0c47bc23"
 "checksum slab 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)" = "5f9776d6b986f77b35c6cf846c11ad986ff128fe0b2b63a3628e3755e8d3102d"
-"checksum smallvec 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)" = "153ffa32fd170e9944f7e0838edf824a754ec4c1fc64746fcc9fe1f8fa602e5d"
+"checksum smallvec 0.6.10 (registry+https://github.com/rust-lang/crates.io-index)" = "ab606a9c5e214920bb66c458cd7be8ef094f813f20fe77a54cc7dbfff220d4b7"
 "checksum socket2 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)" = "c4d11a52082057d87cb5caa31ad812f4504b97ab44732cd8359df2e9ff9f48e7"
 "checksum stable_deref_trait 1.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "dba1a27d3efae4351c8051072d619e3ade2820635c3958d826bfea39d59b54c8"
 "checksum string 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "00caf261d6f90f588f8450b8e1230fa0d5be49ee6140fdfbcb55335aff350970"
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -2,7 +2,7 @@
 description = "Parity Ethereum client"
 name = "parity-ethereum"
 # NOTE Make sure to update util/version/Cargo.toml as well
-version = "2.5.0"
+version = "2.5.6"
 license = "GPL-3.0"
 authors = ["Parity Technologies <admin@parity.io>"]

@@ -118,10 +118,13 @@ path = "parity/lib.rs"
 path = "parity/main.rs"
 name = "parity"

-[profile.dev]
+[profile.test]
+lto = false
+opt-level = 3 # makes tests slower to compile, but faster to run

 [profile.release]
 debug = false
+lto = true

 [workspace]
 # This should only list projects that are not
--- a/README.md
+++ b/README.md
@@ -7,6 +7,24 @@
 <p align="center"><a href="https://gitlab.parity.io/parity/parity-ethereum/commits/master" target="_blank"><img src="https://gitlab.parity.io/parity/parity-ethereum/badges/master/build.svg" /></a>
 <a href="https://www.gnu.org/licenses/gpl-3.0.en.html" target="_blank"><img src="https://img.shields.io/badge/license-GPL%20v3-green.svg" /></a></p>

+## Table of Contents
+
+1. [Description](#chapter-001)
+2. [Technical Overview](#chapter-002)
+3. [Building](#chapter-003)<br>
+  3.1 [Building Dependencies](#chapter-0031)<br>
+  3.2 [Building from Source Code](#chapter-0032)<br>
+  3.3 [Simple One-Line Installer for Mac and Linux](#chapter-0033)<br>
+  3.4 [Starting Parity Ethereum](#chapter-0034)
+4. [Documentation](#chapter-004)
+5. [Toolchain](#chapter-005)
+6. [Community](#chapter-006)
+7. [Contributing](#chapter-007)
+8. [License](#chapter-008)
+
+
+## 1. Description <a id="chapter-001"></a>
+
 **Built for mission-critical use**: Miners, service providers, and exchanges need fast synchronisation and maximum uptime. Parity Ethereum provides the core infrastructure essential for speedy and reliable services.

 - Clean, modular codebase for easy customisation
@@ -15,7 +33,7 @@
 - Synchronise in hours, not days with Warp Sync
 - Modular for light integration into your service or product

-## Technical Overview
+## 2. Technical Overview <a id="chapter-002"></a>

 Parity Ethereum's goal is to be the fastest, lightest, and most secure Ethereum client. We are developing Parity Ethereum using the sophisticated and cutting-edge **Rust programming language**. Parity Ethereum is licensed under the GPLv3 and can be used for all your Ethereum needs.

@@ -25,7 +43,9 @@ If you run into problems while using Parity Ethereum, check out the [wiki for do

 Parity Ethereum's current beta-release is 2.1. You can download it at [the releases page](https://github.com/paritytech/parity-ethereum/releases) or follow the instructions below to build from source. Please, mind the [CHANGELOG.md](CHANGELOG.md) for a list of all changes between different versions.

-## Build Dependencies
+## 3. Building <a id="chapter-003"></a>
+
+### 3.1 Build Dependencies <a id="chapter-0031"></a>

 Parity Ethereum requires **latest stable Rust version** to build.

@@ -58,7 +78,7 @@ Once you have `rustup` installed, then you need to install:

 Make sure that these binaries are in your `PATH`. After that, you should be able to build Parity Ethereum from source.

-## Build from Source Code
+### 3.2 Build from Source Code <a id="chapter-0032"></a>

 ```bash
 # download Parity Ethereum code
@@ -95,7 +115,7 @@ or
 $ git checkout beta
 ```

-## Simple One-Line Installer for Mac and Linux
+### 3.3 Simple One-Line Installer for Mac and Linux <a id="chapter-0033"></a>

 ```bash
 bash <(curl https://get.parity.io -L)
@@ -107,9 +127,9 @@ The one-line installer always defaults to the latest beta release. To install a
 bash <(curl https://get.parity.io -L) -r stable
 ```

-## Start Parity Ethereum
+### 3.4 Starting Parity Ethereum <a id="chapter-0034"></a>

-### Manually
+#### Manually

 To start Parity Ethereum manually, just run

@@ -119,7 +139,7 @@ $ ./target/release/parity

 so Parity Ethereum begins syncing the Ethereum blockchain.

-### Using `systemd` service file
+#### Using `systemd` service file

 To start Parity Ethereum as a regular user using `systemd` init:

@@ -128,17 +148,203 @@ To start Parity Ethereum as a regular user using `systemd` init:
 2. Copy release to bin folder, write `sudo install ./target/release/parity /usr/bin/parity`
 3. To configure Parity Ethereum, write a `/etc/parity/config.toml` config file, see [Configuring Parity Ethereum](https://paritytech.github.io/wiki/Configuring-Parity) for details.

-## Parity Ethereum toolchain
+## 4. Documentation <a id="chapter-004"></a>
+
+Official website: https://parity.io
+
+Be sure to [check out our wiki](https://wiki.parity.io) for more information.
+
+### Viewing documentation for Parity Ethereum packages
+
+You can generate documentation for Parity Ethereum Rust packages that automatically opens in your web browser using [rustdoc with Cargo](https://doc.rust-lang.org/rustdoc/what-is-rustdoc.html#using-rustdoc-with-cargo) (of the The Rustdoc Book), by running the the following commands:
+
+* **All** packages
+  ```
+  cargo doc --open
+  ```
+
+* Specific package
+  ```
+  cargo doc --package <spec> --open
+  ```
+
+Replacing `<spec>` with one of the following from the details section below (i.e. `cargo doc --package parity-ethereum --open`):
+
+<details><p>
+
+* Parity Ethereum (EthCore) Client Application
+  ```bash
+  parity-ethereum
+  ```
+* Parity Ethereum Account Management, Key Management Tool, and Keys Generator
+  ```bash
+  ethcore-accounts, ethkey-cli, ethstore, ethstore-cli
+  ```
+* Parity Chain Specification
+  ```bash
+  chainspec
+  ```
+* Parity CLI Signer Tool & RPC Client
+  ```bash
+  cli-signer parity-rpc-client
+  ```
+* Parity Ethereum Ethash & ProgPoW Implementations
+  ```bash
+  ethash
+  ```
+* Parity (EthCore) Library
+  ```bash
+  ethcore
+  ```
+  * Parity Ethereum Blockchain Database, Test Generator, Configuration,
+Caching, Importing Blocks, and Block Information
+    ```bash
+    ethcore-blockchain
+    ```
+  * Parity Ethereum (EthCore) Contract Calls and Blockchain Service & Registry Information
+    ```bash
+    ethcore-call-contract
+    ```
+  * Parity Ethereum (EthCore) Database Access & Utilities, Database Cache Manager
+    ```bash
+    ethcore-db
+    ```
+  * Parity Ethereum Virtual Machine (EVM) Rust Implementation
+    ```bash
+    evm
+    ```
+  * Parity Ethereum (EthCore) Light Client Implementation
+    ```bash
+    ethcore-light
+    ```
+  * Parity Smart Contract based Node Filter, Manage Permissions of Network Connections
+    ```bash
+    node-filter
+    ```
+  * Parity Private Transactions
+    ```bash
+    ethcore-private-tx
+    ```
+  * Parity Ethereum (EthCore) Client & Network Service Creation & Registration with the I/O Subsystem
+    ```bash
+    ethcore-service
+    ```
+  * Parity Ethereum (EthCore) Blockchain Synchronization
+    ```bash
+    ethcore-sync
+    ```
+  * Parity Ethereum Common Types
+    ```bash
+    common-types
+    ```
+  * Parity Ethereum Virtual Machines (VM) Support Library
+    ```bash
+    vm
+    ```
+  * Parity Ethereum WASM Interpreter
+    ```bash
+    wasm
+    ```
+  * Parity Ethereum WASM Test Runner
+    ```bash
+    pwasm-run-test
+    ```
+  * Parity EVM Implementation
+    ```bash
+    evmbin
+    ```
+  * Parity Ethereum IPFS-compatible API
+    ```bash
+    parity-ipfs-api
+    ```
+  * Parity Ethereum JSON Deserialization
+    ```bash
+    ethjson
+    ```
+  * Parity Ethereum State Machine Generalization for Consensus Engines
+    ```bash
+    parity-machine
+    ```
+* Parity Ethereum (EthCore) Miner Interface
+  ```bash
+  ethcore-miner parity-local-store price-info ethcore-stratum using_queue
+  ```
+* Parity Ethereum (EthCore) Logger Implementation
+  ```bash
+  ethcore-logger
+  ```
+* C bindings library for the Parity Ethereum client
+  ```bash
+  parity-clib
+  ```
+* Parity Ethereum JSON-RPC Servers
+  ```bash
+  parity-rpc
+  ```
+* Parity Ethereum (EthCore) Secret Store
+  ```bash
+  ethcore-secretstore
+  ```
+* Parity Updater Service
+  ```bash
+  parity-updater parity-hash-fetch
+  ```
+* Parity Core Libraries (Parity Util)
+  ```bash
+  ethcore-bloom-journal blooms-db dir eip-712 fake-fetch fastmap fetch ethcore-io
+  journaldb keccak-hasher len-caching-lock macros memory-cache memzero
+  migration-rocksdb ethcore-network ethcore-network-devp2p panic_hook
+  patricia-trie-ethereum registrar rlp_compress rlp_derive parity-runtime stats
+  time-utils triehash-ethereum unexpected parity-version
+  ```
+* Parity Whisper Protocol Implementation
+  ```bash
+  parity-whisper whisper-cli
+  ```
+
+</p></details>
+
+### Contributing to documentation for Parity Ethereum packages
+
+[Document source code](https://doc.rust-lang.org/1.9.0/book/documentation.html) for Parity Ethereum packages by annotating the source code with documentation comments.
+
+Example (generic documentation comment):
+```markdown
+/// Summary
+///
+/// Description
+///
+/// # Panics
+///
+/// # Errors
+///
+/// # Safety
+///
+/// # Examples
+///
+/// Summary of Example 1
+///
+/// ```rust
+/// // insert example 1 code here for use with documentation as tests
+/// ```
+///
+```
+
+## 5. Toolchain <a id="chapter-005"></a>

 In addition to the Parity Ethereum client, there are additional tools in this repository available:

- [evmbin](https://github.com/paritytech/parity-ethereum/blob/master/evmbin/) - EVM implementation for Parity Ethereum.
- [ethabi](https://github.com/paritytech/ethabi) - Parity Ethereum function calls encoding.
- [ethstore](https://github.com/paritytech/parity-ethereum/blob/master/accounts/ethstore) - Parity Ethereum key management.
- [ethkey](https://github.com/paritytech/parity-ethereum/blob/master/accounts/ethkey) - Parity Ethereum keys generator.
- [whisper](https://github.com/paritytech/parity-ethereum/blob/master/whisper/) - Implementation of Whisper-v2 PoC.
+- [evmbin](./evmbin) - Parity Ethereum EVM Implementation.
+- [ethstore](./accounts/ethstore) - Parity Ethereum Key Management.
+- [ethkey](./accounts/ethkey) - Parity Ethereum Keys Generator.
+- [whisper](./whisper) - Parity Ethereum Whisper-v2 PoC Implementation.

-## Join the chat!
+The following tool is available in a separate repository:
+- [ethabi](https://github.com/paritytech/ethabi) - Parity Ethereum Encoding of Function Calls. [Docs here](https://crates.io/crates/ethabi)
+
+## 6. Community <a id="chapter-006"></a>
+
+### Join the chat!

 Questions? Get in touch with us on Gitter:
 [![Gitter: Parity](https://img.shields.io/badge/gitter-parity-4AB495.svg)](https://gitter.im/paritytech/parity)
@@ -149,8 +355,14 @@ Questions? Get in touch with us on Gitter:
 Alternatively, join our community on Matrix:
 [![Riot: +Parity](https://img.shields.io/badge/riot-%2Bparity%3Amatrix.parity.io-orange.svg)](https://riot.im/app/#/group/+parity:matrix.parity.io)

-## Documentation
+## 7. Contributing <a id="chapter-007"></a>

-Official website: https://parity.io
+An introduction has been provided in the ["So You Want to be a Core Developer" presentation slides by Hernando Castano](http://tiny.cc/contrib-to-parity-eth). Additional guidelines are provided in [CONTRIBUTING](./.github/CONTRIBUTING.md).

-Be sure to [check out our wiki](https://wiki.parity.io) for more information.
+### Contributor Code of Conduct
+
+[CODE_OF_CONDUCT](./.github/CODE_OF_CONDUCT.md)
+
+## 8. License <a id="chapter-008"></a>
+
+[LICENSE](./LICENSE)
--- a/accounts/Cargo.toml
+++ b/accounts/Cargo.toml
@@ -1,5 +1,5 @@
 [package]
-description = "Account management for Parity Ethereum"
+description = "Parity Ethereum Account Management"
 homepage = "http://parity.io"
 license = "GPL-3.0"
 name = "ethcore-accounts"
--- a/accounts/ethkey/Cargo.toml
+++ b/accounts/ethkey/Cargo.toml
@@ -1,10 +1,10 @@
 [package]
+description = "Parity Ethereum Keys Generator"
 name = "ethkey"
 version = "0.3.0"
 authors = ["Parity Technologies <admin@parity.io>"]

 [dependencies]
-byteorder = "1.0"
 edit-distance = "2.0"
 parity-crypto = "0.3.0"
 eth-secp256k1 = { git = "https://github.com/paritytech/rust-secp256k1" }
--- a/accounts/ethkey/README.md
+++ b/accounts/ethkey/README.md
@@ -5,7 +5,7 @@ Parity Ethereum keys generator.
 ### Usage

 ```
-Parity Ethereum keys generator.
+Parity Ethereum Keys Generator.
  Copyright 2015-2019 Parity Technologies (UK) Ltd.

 Usage:
--- a/accounts/ethkey/cli/Cargo.toml
+++ b/accounts/ethkey/cli/Cargo.toml
@@ -1,4 +1,5 @@
 [package]
+description = "Parity Ethereum Keys Generator CLI"
 name = "ethkey-cli"
 version = "0.1.0"
 authors = ["Parity Technologies <admin@parity.io>"]
--- a/accounts/ethkey/src/extended.rs
+++ b/accounts/ethkey/src/extended.rs
@@ -35,9 +35,8 @@ impl Label for u32 {
 	fn len() -> usize { 4 }

 	fn store(&self, target: &mut [u8]) {
-		use byteorder::{BigEndian, ByteOrder};
-
-		BigEndian::write_u32(&mut target[0..4], *self);
+		let bytes = self.to_be_bytes();
+		target[0..4].copy_from_slice(&bytes);
 	}
 }

--- a/accounts/ethkey/src/lib.rs
+++ b/accounts/ethkey/src/lib.rs
@@ -16,7 +16,6 @@

 // #![warn(missing_docs)]

-extern crate byteorder;
 extern crate edit_distance;
 extern crate parity_crypto;
 extern crate ethereum_types;
--- a/accounts/ethstore/Cargo.toml
+++ b/accounts/ethstore/Cargo.toml
@@ -1,4 +1,5 @@
 [package]
+description = "Parity Ethereum Key Management"
 name = "ethstore"
 version = "0.2.1"
 authors = ["Parity Technologies <admin@parity.io>"]
--- a/accounts/ethstore/cli/Cargo.toml
+++ b/accounts/ethstore/cli/Cargo.toml
@@ -1,4 +1,5 @@
 [package]
+description = "Parity Ethereum Key Management CLI"
 name = "ethstore-cli"
 version = "0.1.1"
 authors = ["Parity Technologies <admin@parity.io>"]
--- a/chainspec/Cargo.toml
+++ b/chainspec/Cargo.toml
@@ -1,4 +1,5 @@
 [package]
+description = "Parity Ethereum Chain Specification"
 name = "chainspec"
 version = "0.1.0"
 authors = ["Marek Kotewicz <marek@parity.io>"]
--- a/cli-signer/Cargo.toml
+++ b/cli-signer/Cargo.toml
@@ -1,10 +1,10 @@
 [package]
-authors = ["Parity <admin@parity.io>"]
-description = "Parity Cli Tool"
+description = "Parity Ethereum CLI Signer Tool"
 homepage = "http://parity.io"
 license = "GPL-3.0"
 name = "cli-signer"
 version = "1.4.0"
+authors = ["Parity <admin@parity.io>"]

 [dependencies]
 ethereum-types = "0.4"
--- a/cli-signer/rpc-client/Cargo.toml
+++ b/cli-signer/rpc-client/Cargo.toml
@@ -1,10 +1,10 @@
 [package]
-authors = ["Parity <admin@parity.io>"]
-description = "Parity Rpc Client"
+description = "Parity Ethereum RPC Client"
 homepage = "http://parity.io"
 license = "GPL-3.0"
 name = "parity-rpc-client"
 version = "1.4.0"
+authors = ["Parity <admin@parity.io>"]

 [dependencies]
 ethereum-types = "0.4"
--- a/docs/CHANGELOG-2.4.md
+++ b/docs/CHANGELOG-2.4.md
@@ -0,0 +1,128 @@
+## Parity-Ethereum [v2.4.9](https://github.com/paritytech/parity-ethereum/releases/tag/v2.4.9)
+
+Parity Ethereum v2.4.9-stable is a security update which addresses servo/rust-smallvec#148
+
+The full list of included changes:
+
+* cargo update -p smallvec ([#10822](https://github.com/paritytech/parity-ethereum/pull/10822))
+
+## Parity-Ethereum [v2.4.8](https://github.com/paritytech/parity-ethereum/releases/tag/v2.4.8)
+
+Parity-Ethereum 2.4.8-stable is a bugfix release that improves performance and stability.
+
+* Blockchain: fix reset chain
+* State tests: treat empty accounts the same as non-existant accounts (EIP 1052)
+* Aura: fix Timestamp Overflow
+* Networking: support discovery-only peers (geth bootnodes)
+* Snapshotting: fix unclean shutdown while snappshotting is under way
+
+The full list of included changes:
+
+* ethcore/res: activate atlantis classic hf on block 8772000 ([#10766](https://github.com/paritytech/parity-ethereum/pull/10766))
+* fix docker tags for publishing ([#10741](https://github.com/paritytech/parity-ethereum/pull/10741))
+* Reset blockchain properly ([#10669](https://github.com/paritytech/parity-ethereum/pull/10669))
+* adds rpc error message for --no-ancient-blocks ([#10608](https://github.com/paritytech/parity-ethereum/pull/10608))
+* Treat empty account the same as non-exist accounts in EIP-1052 ([#10775](https://github.com/paritytech/parity-ethereum/pull/10775))
+* fix: aura don't add `SystemTime::now()` ([#10720](https://github.com/paritytech/parity-ethereum/pull/10720))
+* DevP2p: Get node IP address and udp port from Socket, if not included in PING packet ([#10705](https://github.com/paritytech/parity-ethereum/pull/10705))
+* Revert "fix: aura don't add `SystemTime::now()` ([#10720](https://github.com/paritytech/parity-ethereum/pull/10720))"
+* Add a way to signal shutdown to snapshotting threads ([#10744](https://github.com/paritytech/parity-ethereum/pull/10744))
+
+## Parity-Ethereum [v2.4.7](https://github.com/paritytech/parity-ethereum/releases/tag/v2.4.7)
+
+Parity-Ethereum 2.4.7-stable is a bugfix release that improves performance and stability.
+
+Among others, it enables the _Atlantis_ hardfork on **Morden** and **Kotti** Classic networks.
+
+The full list of included changes:
+
+* [CI] allow cargo audit to fail ([#10676](https://github.com/paritytech/parity-ethereum/pull/10676))
+* new image ([#10673](https://github.com/paritytech/parity-ethereum/pull/10673))
+* Update publishing ([#10644](https://github.com/paritytech/parity-ethereum/pull/10644))
+* enable lto for release builds ([#10717](https://github.com/paritytech/parity-ethereum/pull/10717))
+* Use RUSTFLAGS to set the optimization level ([#10719](https://github.com/paritytech/parity-ethereum/pull/10719))
+* ethcore: enable ECIP-1054 for classic ([#10731](https://github.com/paritytech/parity-ethereum/pull/10731))
+
+## Parity-Ethereum [v2.4.6](https://github.com/paritytech/parity-ethereum/releases/tag/v2.4.6)
+
+Parity-Ethereum 2.4.6-stable is a bugfix release that improves performance and stability.
+
+Among others, it enables the Petersburg hardfork on **Rinkeby** and **POA-Core** Network, as well as the **Kovan** Network community hardfork.
+
+The full list of included changes:
+
+* ci: publish docs debug ([#10638](https://github.com/paritytech/parity-ethereum/pull/10638))
+
+## Parity-Ethereum [v2.4.5](https://github.com/paritytech/parity-ethereum/releases/tag/v2.4.5)
+
+Parity-Ethereum 2.4.5-stable is a bugfix release that improves performance and stability. This release improves memory optimizations around timestamp handling and stabilizes the 2.4 release branch.
+
+As of today, Parity-Ethereum 2.3 reaches end of life and everyone is encouraged to upgrade.
+
+## Parity-Ethereum [v2.4.4](https://github.com/paritytech/parity-ethereum/releases/tag/v2.4.4)
+
+Parity-Ethereum 2.4.4-beta is a bugfix release that improves performance and stability. This patch release removes the dead chain configs for Easthub and Ethereum Social.
+
+The full list of included changes:
+
+* fix(rpc-types): replace uint and hash with `ethereum_types v0.4` ([#10217](https://github.com/paritytech/parity-ethereum/pull/10217))
+* chore(bump ethereum-types) ([#10396](https://github.com/paritytech/parity-ethereum/pull/10396))
+* fix(light eth_gasPrice): ask network if not in cache ([#10535](https://github.com/paritytech/parity-ethereum/pull/10535))
+* fix(light account response): update `tx_queue` ([#10545](https://github.com/paritytech/parity-ethereum/pull/10545))
+* fix(bump dependencies) ([#10540](https://github.com/paritytech/parity-ethereum/pull/10540))
+* tx-pool: check transaction readiness before replacing ([#10526](https://github.com/paritytech/parity-ethereum/pull/10526))
+* fix #10390 ([#10391](https://github.com/paritytech/parity-ethereum/pull/10391))
+* private-tx: replace error_chain ([#10510](https://github.com/paritytech/parity-ethereum/pull/10510))
+
+## Parity-Ethereum [v2.4.3](https://github.com/paritytech/parity-ethereum/releases/tag/v2.4.3)
+
+Parity-Ethereum 2.4.3-beta is a bugfix release that improves performance and stability. This patch release contains a critical bug fix where serving light clients previously led to client crashes. Upgrading is highly recommended.
+
+The full list of included changes:
+
+* Add additional request tests ([#10503](https://github.com/paritytech/parity-ethereum/pull/10503))
+
+## Parity-Ethereum [v2.4.2](https://github.com/paritytech/parity-ethereum/releases/tag/v2.4.2)
+
+Parity-Ethereum 2.4.2-beta is a bugfix release that improves performance and stability.
+
+The full list of included changes:
+
+* Сaching through docker volume ([#10477](https://github.com/paritytech/parity-ethereum/pull/10477))
+* fix win&mac build ([#10486](https://github.com/paritytech/parity-ethereum/pull/10486))
+* fix(extract `timestamp_checked_add` as lib) ([#10383](https://github.com/paritytech/parity-ethereum/pull/10383))
+
+## Parity-Ethereum [v2.4.1](https://github.com/paritytech/parity-ethereum/releases/tag/v2.4.1)
+
+Parity-Ethereum 2.4.1-beta is a bugfix release that improves performance and stability.
+
+The full list of included changes:
+
+* Implement parity_versionInfo & parity_setChain on LC; fix parity_setChain ([#10312](https://github.com/paritytech/parity-ethereum/pull/10312))
+* CI publish to aws ([#10446](https://github.com/paritytech/parity-ethereum/pull/10446))
+* CI aws git checkout ([#10451](https://github.com/paritytech/parity-ethereum/pull/10451))
+* Revert "CI aws git checkout ([#10451](https://github.com/paritytech/parity-ethereum/pull/10451))" (#10456)
+* Revert "CI aws git checkout ([#10451](https://github.com/paritytech/parity-ethereum/pull/10451))"
+* Tests parallelized ([#10452](https://github.com/paritytech/parity-ethereum/pull/10452))
+* Ensure static validator set changes are recognized ([#10467](https://github.com/paritytech/parity-ethereum/pull/10467))
+
+## Parity-Ethereum [v2.4.0](https://github.com/paritytech/parity-ethereum/releases/tag/v2.4.0)
+
+Parity-Ethereum 2.4.0-beta is our trifortnightly minor version release coming with a lot of new features as well as bugfixes and performance improvements.
+
+Notable changes:
+- Account management is now deprecated ([#10213](https://github.com/paritytech/parity-ethereum/pull/10213))
+- Local accounts can now be specified via CLI ([#9960](https://github.com/paritytech/parity-ethereum/pull/9960))
+- Chains can now be reset to a particular block via CLI ([#9782](https://github.com/paritytech/parity-ethereum/pull/9782))
+- Ethash now additionally implements ProgPoW ([#9762](https://github.com/paritytech/parity-ethereum/pull/9762)) 
+- The `eip1283DisableTransition` flag was added to revert EIP-1283 ([#10214](https://github.com/paritytech/parity-ethereum/pull/10214))
+
+The full list of included changes:
+
+* revert some changes, could be buggy ([#10399](https://github.com/paritytech/parity-ethereum/pull/10399))
+* 10000 > 5000 ([#10422](https://github.com/paritytech/parity-ethereum/pull/10422))
+* fix panic when logging directory does not exist, closes #10420 ([#10424](https://github.com/paritytech/parity-ethereum/pull/10424))
+* fix underflow in pip, closes #10419 ([#10423](https://github.com/paritytech/parity-ethereum/pull/10423))
+* ci: clean up gitlab-ci.yml leftovers from previous merge ([#10429](https://github.com/paritytech/parity-ethereum/pull/10429))
+* Update hardcoded headers for Foundation, Ropsten, Kovan and Classic ([#10417](https://github.com/paritytech/parity-ethereum/pull/10417))
+
--- a/ethash/Cargo.toml
+++ b/ethash/Cargo.toml
@@ -1,4 +1,5 @@
 [package]
+description = "Parity Ethereum Ethash & ProgPoW Implementations"
 name = "ethash"
 version = "1.12.0"
 authors = ["Parity Technologies <admin@parity.io>"]
--- a/ethcore/Cargo.toml
+++ b/ethcore/Cargo.toml
@@ -1,5 +1,5 @@
 [package]
-description = "Ethcore library"
+description = "Parity Ethereum (EthCore) Library"
 homepage = "http://parity.io"
 license = "GPL-3.0"
 name = "ethcore"
@@ -12,7 +12,7 @@ blooms-db = { path = "../util/blooms-db", optional = true }
 bn = { git = "https://github.com/paritytech/bn", default-features = false }
 byteorder = "1.0"
 common-types = { path = "types" }
-crossbeam = "0.4"
+crossbeam-utils = "0.6"
 env_logger = { version = "0.5", optional = true }
 error-chain = { version = "0.12", default-features = false }
 ethabi = "6.0"
@@ -55,7 +55,7 @@ parking_lot = "0.7"
 trie-db = "0.11.0"
 patricia-trie-ethereum = { path = "../util/patricia-trie-ethereum" }
 rand = "0.4"
-rayon = "1.0"
+rayon = "1.1"
 rlp = { version = "0.3.0", features = ["ethereum"] }
 rlp_derive = { path = "../util/rlp-derive" }
 rustc-hex = "1.0"
--- a/ethcore/blockchain/Cargo.toml
+++ b/ethcore/blockchain/Cargo.toml
@@ -1,5 +1,5 @@
 [package]
-description = "Ethcore blockchain database"
+description = "Parity Ethereum Blockchain Database, Test Generator, Configuration, Caching, Importing Blocks, and Block Information"
 homepage = "http://parity.io"
 license = "GPL-3.0"
 name = "ethcore-blockchain"
@@ -19,7 +19,7 @@ kvdb = "0.1"
 log = "0.4"
 parity-bytes = "0.1"
 parking_lot = "0.7"
-rayon = "1.0"
+rayon = "1.1"
 rlp = { version = "0.3.0", features = ["ethereum"] }
 rlp_compress = { path = "../../util/rlp-compress" }
 rlp_derive = { path = "../../util/rlp-derive" }
--- a/ethcore/blockchain/src/blockchain.rs
+++ b/ethcore/blockchain/src/blockchain.rs
@@ -668,21 +668,6 @@ impl BlockChain {
 		self.db.key_value().read_with_cache(db::COL_EXTRA, &self.block_details, parent).map_or(false, |d| d.children.contains(hash))
 	}

-	/// fetches the list of blocks from best block to n, and n's parent hash
-	/// where n > 0
-	pub fn block_headers_from_best_block(&self, n: u32) -> Option<(Vec<encoded::Header>, H256)> {
-		let mut blocks = Vec::with_capacity(n as usize);
-		let mut hash = self.best_block_hash();
-
-		for _ in 0..n {
-			let current_hash = self.block_header_data(&hash)?;
-			hash = current_hash.parent_hash();
-			blocks.push(current_hash);
-		}
-
-		Some((blocks, hash))
-	}
-
 	/// Returns a tree route between `from` and `to`, which is a tuple of:
 	///
 	/// - a vector of hashes of all blocks, ordered from `from` to `to`.
@@ -869,6 +854,14 @@ impl BlockChain {
 		}
 	}

+	/// clears all caches for testing purposes
+	pub fn clear_cache(&self) {
+		self.block_bodies.write().clear();
+		self.block_details.write().clear();
+		self.block_hashes.write().clear();
+		self.block_headers.write().clear();
+	}
+
 	/// Update the best ancient block to the given hash, after checking that
 	/// it's directly linked to the currently known best ancient block
 	pub fn update_best_ancient_block(&self, hash: &H256) {
--- a/ethcore/call-contract/Cargo.toml
+++ b/ethcore/call-contract/Cargo.toml
@@ -1,4 +1,5 @@
 [package]
+description = "Parity Ethereum (EthCore) Contract Calls and Blockchain Service & Registry Information"
 name = "ethcore-call-contract"
 version = "0.1.0"
 license = "GPL-3.0"
--- a/ethcore/evm/Cargo.toml
+++ b/ethcore/evm/Cargo.toml
@@ -1,4 +1,5 @@
 [package]
+description = "Parity Ethereum Virtual Machine (EVM) Rust Implementation"
 name = "evm"
 version = "0.1.0"
 authors = ["Parity Technologies <admin@parity.io>"]
@@ -14,6 +15,7 @@ vm = { path = "../vm" }
 keccak-hash = "0.1"
 parking_lot = "0.7"
 memory-cache = { path = "../../util/memory-cache" }
+num-bigint = "0.2"

 [dev-dependencies]
 rustc-hex = "1.0"
--- a/ethcore/evm/benches/basic.rs
+++ b/ethcore/evm/benches/basic.rs
@@ -45,7 +45,9 @@ criterion_group!(
 	mem_gas_calculation_same_usize,
 	mem_gas_calculation_same_u256,
 	mem_gas_calculation_increasing_usize,
-	mem_gas_calculation_increasing_u256
+	mem_gas_calculation_increasing_u256,
+	blockhash_mulmod_small,
+	blockhash_mulmod_large,
 );
 criterion_main!(basic);

@@ -150,6 +152,54 @@ fn mem_gas_calculation_increasing(gas: U256, b: &mut Bencher) {
 	});
 }

+fn blockhash_mulmod_small(b: &mut Criterion) {
+	b.bench_function("blockhash_mulmod_small", |b| {
+		let factory = Factory::default();
+		let mut ext = FakeExt::new();
+
+		let address = Address::from_str("0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6").unwrap();
+
+		b.iter(|| {
+			let code = black_box(
+				"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".from_hex().unwrap()
+			);
+
+			let mut params = ActionParams::default();
+			params.address = address.clone();
+			params.gas = U256::from(4_000u64);
+			params.code = Some(Arc::new(code.clone()));
+
+			let vm = factory.create(params, ext.schedule(), 0);
+
+			result(vm.exec(&mut ext).ok().unwrap())
+		});
+	});
+}
+
+fn blockhash_mulmod_large(b: &mut Criterion) {
+	b.bench_function("blockhash_mulmod_large", |b| {
+		let factory = Factory::default();
+		let mut ext = FakeExt::new();
+
+		let address = Address::from_str("0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6").unwrap();
+
+		b.iter(|| {
+			let code = black_box(
+				"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".from_hex().unwrap()
+			);
+
+			let mut params = ActionParams::default();
+			params.address = address.clone();
+			params.gas = U256::from(4_000u64);
+			params.code = Some(Arc::new(code.clone()));
+
+			let vm = factory.create(params, ext.schedule(), 0);
+
+			result(vm.exec(&mut ext).ok().unwrap())
+		});
+	});
+}
+
 fn result(r: Result<evm::GasLeft>) -> U256 {
 	match r {
 		Ok(GasLeft::Known(gas_left)) => gas_left,
--- a/ethcore/evm/src/interpreter/mod.rs
+++ b/ethcore/evm/src/interpreter/mod.rs
@@ -28,7 +28,8 @@ use std::{cmp, mem};
 use std::sync::Arc;
 use hash::keccak;
 use bytes::Bytes;
-use ethereum_types::{U256, U512, H256, Address};
+use ethereum_types::{U256, H256, Address};
+use num_bigint::BigUint;

 use vm::{
 	self, ActionParams, ParamsType, ActionValue, CallType, MessageCallResult,
@@ -61,6 +62,17 @@ const TWO_POW_96: U256 = U256([0, 0x100000000, 0, 0]); //0x1 00000000 00000000 0
 const TWO_POW_224: U256 = U256([0, 0, 0, 0x100000000]); //0x1 00000000 00000000 00000000 00000000 00000000 00000000 00000000
 const TWO_POW_248: U256 = U256([0, 0, 0, 0x100000000000000]); //0x1 00000000 00000000 00000000 00000000 00000000 00000000 00000000 000000

+fn to_biguint(x: U256) -> BigUint {
+	let mut bytes = [0u8; 32];
+	x.to_little_endian(&mut bytes);
+	BigUint::from_bytes_le(&bytes)
+}
+
+fn from_biguint(x: BigUint) -> U256 {
+	let bytes = x.to_bytes_le();
+	U256::from_little_endian(&bytes)
+}
+
 /// Abstraction over raw vector of Bytes. Easier state management of PC.
 struct CodeReader {
 	position: ProgramCounter,
@@ -1009,11 +1021,12 @@ impl<Cost: CostType> Interpreter<Cost> {
 				let c = self.stack.pop_back();

 				self.stack.push(if !c.is_zero() {
-					// upcast to 512
-					let a5 = U512::from(a);
-					let res = a5.overflowing_add(U512::from(b)).0;
-					let x = res % U512::from(c);
-					U256::from(x)
+					let a_num = to_biguint(a);
+					let b_num = to_biguint(b);
+					let c_num = to_biguint(c);
+					let res = a_num + b_num;
+					let x = res % c_num;
+					from_biguint(x)
 				} else {
 					U256::zero()
 				});
@@ -1024,10 +1037,12 @@ impl<Cost: CostType> Interpreter<Cost> {
 				let c = self.stack.pop_back();

 				self.stack.push(if !c.is_zero() {
-					let a5 = U512::from(a);
-					let res = a5.overflowing_mul(U512::from(b)).0;
-					let x = res % U512::from(c);
-					U256::from(x)
+					let a_num = to_biguint(a);
+					let b_num = to_biguint(b);
+					let c_num = to_biguint(c);
+					let res = a_num * b_num;
+					let x = res % c_num;
+					from_biguint(x)
 				} else {
 					U256::zero()
 				});
--- a/ethcore/evm/src/lib.rs
+++ b/ethcore/evm/src/lib.rs
@@ -24,6 +24,7 @@ extern crate vm;
 extern crate keccak_hash as hash;
 extern crate memory_cache;
 extern crate parity_bytes as bytes;
+extern crate num_bigint;

 #[macro_use]
 extern crate lazy_static;
--- a/ethcore/light/Cargo.toml
+++ b/ethcore/light/Cargo.toml
@@ -1,5 +1,5 @@
 [package]
-description = "Parity Light Client Implementation"
+description = "Parity Ethereum (EthCore) Light Client Implementation (Block Import IO Service, Blockchain Data Fetching, Light Client Header Chain Storage, Parity Light Protocol (PLP) Provider, Light Transaction Queue, CHT Definitions, Light Client Data Cache), Parity Light Protocol (PLP) Implementation, P2P Network I/O and Event Context Generalization, Peer Error Handling & Punishment, Request Load Timer & Distribution Manager, Pending Request Set Storage, Request Credit Management, Light Client Request Types, Request Chain Builder Utility, On-demand Chain Request Service over LES (for RPCs), ResponseGuard Implementation)"
 homepage = "http://parity.io"
 license = "GPL-3.0"
 name = "ethcore-light"
--- a/ethcore/node-filter/Cargo.toml
+++ b/ethcore/node-filter/Cargo.toml
@@ -1,5 +1,5 @@
 [package]
-description = "Parity smart network connections"
+description = "Parity Smart Contract based Node Filter, Manage Permissions of Network Connections"
 homepage = "http://parity.io"
 license = "GPL-3.0"
 name = "node-filter"
--- a/ethcore/private-tx/src/encryptor.rs
+++ b/ethcore/private-tx/src/encryptor.rs
@@ -60,7 +60,7 @@ pub trait Encryptor: Send + Sync + 'static {
 	) -> Result<Bytes, Error>;
 }

-/// Configurtion for key server encryptor
+/// Configuration for key server encryptor
 #[derive(Default, PartialEq, Debug, Clone)]
 pub struct EncryptorConfig {
 	/// URL to key server
--- a/ethcore/res/ethereum/classic.json
+++ b/ethcore/res/ethereum/classic.json
@@ -8,11 +8,12 @@
 				"difficultyBoundDivisor": "0x0800",
 				"durationLimit": "0x0d",
 				"blockReward": "0x4563918244F40000",
-				"homesteadTransition": 1150000,
-				"ecip1010PauseTransition": 3000000,
-				"ecip1010ContinueTransition": 5000000,
-				"ecip1017EraRounds": 5000000,
-				"bombDefuseTransition": 5900000
+				"homesteadTransition": "0x118c30",
+				"ecip1010PauseTransition": "0x2dc6c0",
+				"ecip1010ContinueTransition": "0x4c4b40",
+				"ecip1017EraRounds": "0x4c4b40",
+				"eip100bTransition": "0x85d9a0",
+				"bombDefuseTransition": "0x5a06e0"
 			}
 		}
 	},
@@ -26,11 +27,17 @@
 		"chainID": "0x3d",
 		"forkBlock": "0x1d4c00",
 		"forkCanonHash": "0x94365e3a8c0b35089c1d1195081fe7489b528a84b22199c916180db8b28ade7f",
-		"eip150Transition": 2500000,
-		"eip160Transition": 3000000,
-		"eip161abcTransition": "0x7fffffffffffffff",
-		"eip161dTransition": "0x7fffffffffffffff",
-		"eip155Transition": 3000000
+		"eip150Transition": "0x2625a0",
+		"eip160Transition": "0x2dc6c0",
+		"eip161abcTransition": "0x85d9a0",
+		"eip161dTransition": "0x85d9a0",
+		"eip155Transition": "0x2dc6c0",
+		"maxCodeSize": "0x6000",
+		"maxCodeSizeTransition": "0x85d9a0",
+		"eip140Transition": "0x85d9a0",
+		"eip211Transition": "0x85d9a0",
+		"eip214Transition": "0x85d9a0",
+		"eip658Transition": "0x85d9a0"
 	},
 	"genesis": {
 		"seal": {
@@ -3835,7 +3842,7 @@
 			"0xc32fd5318214071a41cd8e98499b2b65942c5837c686a06b536146fd0bf294bf",
 			"0xac390c012eecd83fa8f4cc77a59992914b5c95af36b28747e07adea13228acbc"
 		]
-	  },
+	},
 	"nodes": [
 		"enode://efd48ad0879eeb7f9cb5e50f33f7bc21e805a72e90361f145baaa22dd75d111e7cd9c93f1b7060dcb30aa1b3e620269336dbf32339fea4c18925a4c15fe642df@18.205.66.229:30303",
 		"enode://5fbfb426fbb46f8b8c1bd3dd140f5b511da558cd37d60844b525909ab82e13a25ee722293c829e52cb65c2305b1637fa9a2ea4d6634a224d5f400bfe244ac0de@162.243.55.45:30303",
@@ -3851,10 +3858,97 @@
 		"enode://5cd218959f8263bc3721d7789070806b0adff1a0ed3f95ec886fb469f9362c7507e3b32b256550b9a7964a23a938e8d42d45a0c34b332bfebc54b29081e83b93@35.187.57.94:30303"
 	],
 	"accounts": {
-		"0000000000000000000000000000000000000001": { "builtin": { "name": "ecrecover", "pricing": { "linear": { "base": 3000, "word": 0 } } } },
-		"0000000000000000000000000000000000000002": { "builtin": { "name": "sha256", "pricing": { "linear": { "base": 60, "word": 12 } } } },
-		"0000000000000000000000000000000000000003": { "builtin": { "name": "ripemd160", "pricing": { "linear": { "base": 600, "word": 120 } } } },
-		"0000000000000000000000000000000000000004": { "builtin": { "name": "identity", "pricing": { "linear": { "base": 15, "word": 3 } } } },
+		"0x0000000000000000000000000000000000000001": {
+			"builtin": {
+				"name": "ecrecover",
+				"pricing": {
+					"linear": {
+						"base": 3000,
+						"word": 0
+					}
+				}
+			}
+		},
+		"0x0000000000000000000000000000000000000002": {
+			"builtin": {
+				"name": "sha256",
+				"pricing": {
+					"linear": {
+						"base": 60,
+						"word": 12
+					}
+				}
+			}
+		},
+		"0x0000000000000000000000000000000000000003": {
+			"builtin": {
+				"name": "ripemd160",
+				"pricing": {
+					"linear": {
+						"base": 600,
+						"word": 120
+					}
+				}
+			}
+		},
+		"0x0000000000000000000000000000000000000004": {
+			"builtin": {
+				"name": "identity",
+				"pricing": {
+					"linear": {
+						"base": 15,
+						"word": 3
+					}
+				}
+			}
+		},
+		"0x0000000000000000000000000000000000000005": {
+			"builtin": {
+				"name": "modexp",
+				"activate_at": "0x85d9a0",
+				"pricing": {
+					"modexp": {
+						"divisor": 20
+					}
+				}
+			}
+		},
+		"0x0000000000000000000000000000000000000006": {
+			"builtin": {
+				"name": "alt_bn128_add",
+				"activate_at": "0x85d9a0",
+				"pricing": {
+					"linear": {
+						"base": 500,
+						"word": 0
+					}
+				}
+			}
+		},
+		"0x0000000000000000000000000000000000000007": {
+			"builtin": {
+				"name": "alt_bn128_mul",
+				"activate_at": "0x85d9a0",
+				"pricing": {
+					"linear": {
+						"base": 40000,
+						"word": 0
+					}
+				}
+			}
+		},
+		"0x0000000000000000000000000000000000000008": {
+			"builtin": {
+				"name": "alt_bn128_pairing",
+				"activate_at": "0x85d9a0",
+				"pricing": {
+					"alt_bn128_pairing": {
+						"base": 100000,
+						"pair": 80000
+					}
+				}
+			}
+		},
 		"3282791d6fd713f1e94f4bfd565eaa78b3a0599d": {
 			"balance": "1337000000000000000000"
 		},
--- a/ethcore/res/ethereum/ewc.json
+++ b/ethcore/res/ethereum/ewc.json
--- a/ethcore/res/ethereum/goerli.json
+++ b/ethcore/res/ethereum/goerli.json
@@ -48,8 +48,14 @@
 		"timestamp": "0x5c51a607"
 	},
 	"nodes": [
-		"enode://011f758e6552d105183b1761c5e2dea0111bc20fd5f6422bc7f91e0fabbec9a6595caf6239b37feb773dddd3f87240d99d859431891e4a642cf2a0a9e6cbb98a@51.141.78.53:30303",
-		"enode://176b9417f511d05b6b2cf3e34b756cf0a7096b3094572a8f6ef4cdcb9d1f9d00683bf0f83347eebdf3b81c3521c2332086d9592802230bf528eaf606a1d9677b@13.93.54.137:30303"
+		"enode://06333009fc9ef3c9e174768e495722a7f98fe7afd4660542e983005f85e556028410fd03278944f44cfe5437b1750b5e6bd1738f700fe7da3626d52010d2954c@51.141.15.254:30303",
+		"enode://176b9417f511d05b6b2cf3e34b756cf0a7096b3094572a8f6ef4cdcb9d1f9d00683bf0f83347eebdf3b81c3521c2332086d9592802230bf528eaf606a1d9677b@13.93.54.137:30303",
+		"enode://573b6607cd59f241e30e4c4943fd50e99e2b6f42f9bd5ca111659d309c06741247f4f1e93843ad3e8c8c18b6e2d94c161b7ef67479b3938780a97134b618b5ce@52.56.136.200:30303",
+		"enode://67913271d14f445689e8310270c304d42f268428f2de7a4ac0275bea97690e021df6f549f462503ff4c7a81d9dd27288867bbfa2271477d0911378b8944fae55@157.230.239.163:30303",
+		"enode://a87685902a0622e9cf18c68e73a0ea45156ec53e857ef049b185a9db2296ca04d776417bf1901c0b4eacb5b26271d8694e88e3f17c20d49eb77e1a41ab26b5b3@51.141.78.53:30303",
+		"enode://ae8658da8d255d1992c3ec6e62e11d6e1c5899aa1566504bc1ff96a0c9c8bd44838372be643342553817f5cc7d78f1c83a8093dee13d77b3b0a583c050c81940@18.232.185.151:30303",
+		"enode://ae8658da8d255d1992c3ec6e62e11d6e1c5899aa1566504bc1ff96a0c9c8bd44838372be643342553817f5cc7d78f1c83a8093dee13d77b3b0a583c050c81940@18.232.185.151:30303",
+		"enode://b477ca6d507a3f57070783eb62ba838847635f8b1a0cbffb8b7f8173f5894cf550f0225a5c279341e2d862a606e778b57180a4f1db3db78c51eadcfa4fdc6963@40.68.240.160:30303"
 	],
 	"accounts": {
 		"0x0000000000000000000000000000000000000000": {
--- a/ethcore/res/ethereum/kotti.json
+++ b/ethcore/res/ethereum/kotti.json
@@ -12,12 +12,18 @@
 	"params": {
 		"accountStartNonce": "0x0",
 		"chainID": "0x6",
+		"eip140Transition": "0xaef49",
 		"eip150Transition": "0x0",
 		"eip155Transition": "0x0",
 		"eip160Transition": "0x0",
-		"eip161abcTransition": "0x7fffffffffffffff",
-		"eip161dTransition": "0x7fffffffffffffff",
+		"eip161abcTransition": "0xaef49",
+		"eip161dTransition": "0xaef49",
+		"eip211Transition": "0xaef49",
+		"eip214Transition": "0xaef49",
+		"eip658Transition": "0xaef49",
 		"gasLimitBoundDivisor": "0x400",
+		"maxCodeSize": "0x6000",
+		"maxCodeSizeTransition": "0xaef49",
 		"maximumExtraDataSize": "0xffff",
 		"minGasLimit": "0x1388",
 		"networkID": "0x6"
@@ -38,7 +44,9 @@
 	},
 	"nodes": [
 		"enode://06333009fc9ef3c9e174768e495722a7f98fe7afd4660542e983005f85e556028410fd03278944f44cfe5437b1750b5e6bd1738f700fe7da3626d52010d2954c@51.141.15.254:30303",
-		"enode://ae8658da8d255d1992c3ec6e62e11d6e1c5899aa1566504bc1ff96a0c9c8bd44838372be643342553817f5cc7d78f1c83a8093dee13d77b3b0a583c050c81940@18.232.185.151:30303"
+		"enode://93c94e999be5dd854c5d82a7cf5c14822973b5d9badb56ad4974586ec4d4f1995c815af795c20bb6e0a6226d3ee55808435c4dc89baf94ee581141b064d19dfc@80.187.116.161:25720",
+		"enode://ae8658da8d255d1992c3ec6e62e11d6e1c5899aa1566504bc1ff96a0c9c8bd44838372be643342553817f5cc7d78f1c83a8093dee13d77b3b0a583c050c81940@18.232.185.151:30303",
+		"enode://b477ca6d507a3f57070783eb62ba838847635f8b1a0cbffb8b7f8173f5894cf550f0225a5c279341e2d862a606e778b57180a4f1db3db78c51eadcfa4fdc6963@40.68.240.160:30303"
 	],
 	"accounts": {
 		"0x0000000000000000000000000000000000000000": {
@@ -93,16 +101,55 @@
 			}
 		},
 		"0x0000000000000000000000000000000000000005": {
-			"balance": "0x1"
+			"balance": "0x1",
+			"builtin": {
+				"name": "modexp",
+				"activate_at": "0xaef49",
+				"pricing": {
+					"modexp": {
+						"divisor": 20
+					}
+				}
+			}
 		},
 		"0x0000000000000000000000000000000000000006": {
-			"balance": "0x1"
+			"balance": "0x1",
+			"builtin": {
+				"name": "alt_bn128_add",
+				"activate_at": "0xaef49",
+				"pricing": {
+					"linear": {
+						"base": 500,
+						"word": 0
+					}
+				}
+			}
 		},
 		"0x0000000000000000000000000000000000000007": {
-			"balance": "0x1"
+			"balance": "0x1",
+			"builtin": {
+				"name": "alt_bn128_mul",
+				"activate_at": "0xaef49",
+				"pricing": {
+					"linear": {
+						"base": 40000,
+						"word": 0
+					}
+				}
+			}
 		},
 		"0x0000000000000000000000000000000000000008": {
-			"balance": "0x1"
+			"balance": "0x1",
+			"builtin": {
+				"name": "alt_bn128_pairing",
+				"activate_at": "0xaef49",
+				"pricing": {
+					"alt_bn128_pairing": {
+						"base": 100000,
+						"pair": 80000
+					}
+				}
+			}
 		},
 		"0x0000000000000000000000000000000000000009": {
 			"balance": "0x1"
--- a/ethcore/res/ethereum/kovan.json
+++ b/ethcore/res/ethereum/kovan.json
@@ -7,17 +7,31 @@
 				"stepDuration": "0x4",
 				"blockReward": "0x4563918244F40000",
 				"validators": {
-					"list": [
-						"0x00D6Cc1BA9cf89BD2e58009741f4F7325BAdc0ED",
-						"0x00427feae2419c15b89d1c21af10d1b6650a4d3d",
-						"0x4Ed9B08e6354C70fE6F8CB0411b0d3246b424d6c",
-						"0x0020ee4Be0e2027d76603cB751eE069519bA81A1",
-						"0x0010f94b296a852aaac52ea6c5ac72e03afd032d",
-						"0x007733a1FE69CF3f2CF989F81C7b4cAc1693387A",
-						"0x00E6d2b931F55a3f1701c7389d592a7778897879",
-						"0x00e4a10650e5a6D6001C38ff8E64F97016a1645c",
-						"0x00a0a24b9f0e5ec7aa4c7389b8302fd0123194de"
-					]
+					"multi": {
+						"0": {
+							"list": [
+								"0x00D6Cc1BA9cf89BD2e58009741f4F7325BAdc0ED",
+								"0x00427feae2419c15b89d1c21af10d1b6650a4d3d",
+								"0x4Ed9B08e6354C70fE6F8CB0411b0d3246b424d6c",
+								"0x0020ee4Be0e2027d76603cB751eE069519bA81A1",
+								"0x0010f94b296a852aaac52ea6c5ac72e03afd032d",
+								"0x007733a1FE69CF3f2CF989F81C7b4cAc1693387A",
+								"0x00E6d2b931F55a3f1701c7389d592a7778897879",
+								"0x00e4a10650e5a6D6001C38ff8E64F97016a1645c",
+								"0x00a0a24b9f0e5ec7aa4c7389b8302fd0123194de"
+							]
+						},
+						"10960440": {
+							"list": [
+								"0x00D6Cc1BA9cf89BD2e58009741f4F7325BAdc0ED",
+								"0x0010f94b296a852aaac52ea6c5ac72e03afd032d",
+								"0x00a0a24b9f0e5ec7aa4c7389b8302fd0123194de"
+							]
+						},
+						"10960500": {
+							"safeContract": "0xaE71807C1B0a093cB1547b682DC78316D945c9B8"
+						}
+					}
 				},
 				"validateScoreTransition": "0x41a3c4",
 				"validateStepTransition": "0x16e360",
@@ -5367,6 +5381,7 @@
 		}
 	},
 	"nodes": [
+		"enode://f6e37b943bad3a78cb8589b1798d30d210ffd39cfcd2c8f2de4f098467fd49c667980100d919da7ca46cd50505d30989abda87f0b9339377de13d6592c22caf8@34.198.49.72:30303",
 		"enode://56abaf065581a5985b8c5f4f88bd202526482761ba10be9bfdcd14846dd01f652ec33fde0f8c0fd1db19b59a4c04465681fcef50e11380ca88d25996191c52de@40.71.221.215:30303",
 		"enode://d07827483dc47b368eaf88454fb04b41b7452cf454e194e2bd4c14f98a3278fed5d819dbecd0d010407fc7688d941ee1e58d4f9c6354d3da3be92f55c17d7ce3@52.166.117.77:30303",
 		"enode://38e6e7fd416293ed120d567a2675fe078c0205ab0671abf16982ce969823bd1f3443d590c18b321dfae7dcbe1f6ba98ef8702f255c3c9822a188abb82c53adca@51.77.66.187:30303",
--- a/ethcore/res/ethereum/morden.json
+++ b/ethcore/res/ethereum/morden.json
@@ -8,11 +8,12 @@
 				"difficultyBoundDivisor": "0x0800",
 				"durationLimit": "0x0d",
 				"blockReward": "0x4563918244F40000",
-				"homesteadTransition": 494000,
-				"ecip1010PauseTransition": 1915000,
-				"ecip1010ContinueTransition": 3415000,
-				"ecip1017EraRounds": 2000000,
-				"bombDefuseTransition": 2300000
+				"homesteadTransition": "0x789b0",
+				"ecip1010PauseTransition": "0x1d3878",
+				"ecip1010ContinueTransition": "0x341bd8",
+				"ecip1017EraRounds": "0x1e8480",
+				"eip100bTransition": "0x4829ba",
+				"bombDefuseTransition": "0x231860"
 			}
 		}
 	},
@@ -26,11 +27,17 @@
 		"chainID": "0x3e",
 		"forkBlock": "0x1b34d8",
 		"forkCanonHash": "0xf376243aeff1f256d970714c3de9fd78fa4e63cf63e32a51fe1169e375d98145",
-		"eip150Transition": 1783000,
-		"eip160Transition": 1915000,
-		"eip161abcTransition": "0x7fffffffffffffff",
-		"eip161dTransition": "0x7fffffffffffffff",
-		"eip155Transition": 1915000
+		"eip150Transition": "0x1b34d8",
+		"eip160Transition": "0x1d3878",
+		"eip161abcTransition": "0x4829ba",
+		"eip161dTransition": "0x4829ba",
+		"eip155Transition": "0x1d3878",
+		"maxCodeSize": "0x6000",
+		"maxCodeSizeTransition": "0x4829ba",
+		"eip140Transition": "0x4829ba",
+		"eip211Transition": "0x4829ba",
+		"eip214Transition": "0x4829ba",
+		"eip658Transition": "0x4829ba"
 	},
 	"genesis": {
 		"seal": {
@@ -68,6 +75,53 @@
 		"0000000000000000000000000000000000000002": { "balance": "1", "nonce": "1048576", "builtin": { "name": "sha256", "pricing": { "linear": { "base": 60, "word": 12 } } } },
 		"0000000000000000000000000000000000000003": { "balance": "1", "nonce": "1048576", "builtin": { "name": "ripemd160", "pricing": { "linear": { "base": 600, "word": 120 } } } },
 		"0000000000000000000000000000000000000004": { "balance": "1", "nonce": "1048576", "builtin": { "name": "identity", "pricing": { "linear": { "base": 15, "word": 3 } } } },
+		"0x0000000000000000000000000000000000000005": {
+			"builtin": {
+				"name": "modexp",
+				"activate_at": "0x4829ba",
+				"pricing": {
+					"modexp": {
+						"divisor": 20
+					}
+				}
+			}
+		},
+		"0x0000000000000000000000000000000000000006": {
+			"builtin": {
+				"name": "alt_bn128_add",
+				"activate_at": "0x4829ba",
+				"pricing": {
+					"linear": {
+						"base": 500,
+						"word": 0
+					}
+				}
+			}
+		},
+		"0x0000000000000000000000000000000000000007": {
+			"builtin": {
+				"name": "alt_bn128_mul",
+				"activate_at": "0x4829ba",
+				"pricing": {
+					"linear": {
+						"base": 40000,
+						"word": 0
+					}
+				}
+			}
+		},
+		"0x0000000000000000000000000000000000000008": {
+			"builtin": {
+				"name": "alt_bn128_pairing",
+				"activate_at": "0x4829ba",
+				"pricing": {
+					"alt_bn128_pairing": {
+						"base": 100000,
+						"pair": 80000
+					}
+				}
+			}
+		},
 		"102e61f5d8f9bc71d0ad4a084df4e65e05ce0e1c": { "balance": "1606938044258990275541962092341162602522202993782792835301376", "nonce": "1048576" }
 	},
 	"hardcodedSync": {
--- a/ethcore/res/ethereum/poacore.json
+++ b/ethcore/res/ethereum/poacore.json
@@ -34,7 +34,10 @@
 		"eip140Transition": "0x0",
 		"eip211Transition": "0x0",
 		"eip214Transition": "0x0",
-		"eip658Transition": "0x0"
+		"eip658Transition": "0x0",
+		"eip145Transition": 8582254,
+		"eip1014Transition": 8582254,
+		"eip1052Transition": 8582254
 	},
 	"genesis": {
 		"seal": {
--- a/ethcore/res/ethereum/rinkeby.json
+++ b/ethcore/res/ethereum/rinkeby.json
@@ -25,6 +25,7 @@
 		"eip1014Transition": "0x37db77",
 		"eip1052Transition": "0x37db77",
 		"eip1283Transition": "0x37db77",
+		"eip1283DisableTransition": "0x41efd2",
 		"gasLimitBoundDivisor": "0x400",
 		"maxCodeSize": "0x6000",
 		"maxCodeSizeTransition": "0x0",
--- a/ethcore/res/ethereum/ropsten.json
+++ b/ethcore/res/ethereum/ropsten.json
@@ -2654,7 +2654,7 @@
 		]
 	},
 	"nodes": [
-		"enode://6332792c4a00e3e4ee0926ed89e0d27ef985424d97b6a45bf0f23e51f0dcb5e66b875777506458aea7af6f9e4ffb69f43f3778ee73c81ed9d34c51c4b16b0b0f@52.232.243.152:30303",
+		"enode://d6cb8cba18828397e22e8852324af7e970b57cadbbd94aba6124790d1895728311b1f274e45d44a7a22b4276726903130a11ac2de19af5bc9294998f948eaad4@144.217.72.209:30303",
 		"enode://94c15d1b9e2fe7ce56e458b9a3b672ef11894ddedd0c6f247e0f1d3487f52b66208fb4aeb8179fce6e3a749ea93ed147c37976d67af557508d199d9594c35f09@192.81.208.223:30303",
 		"enode://30b7ab30a01c124a6cceca36863ece12c4f5fa68e3ba9b0b51407ccc002eeed3b3102d20a88f1c1d3c3154e2449317b8ef95090e77b312d5cc39354f86d5d606@52.176.7.10:30303",
 		"enode://865a63255b3bb68023b6bffd5095118fcc13e79dcf014fe4e47e065c350c7cc72af2e53eff895f11ba1bbb6a2b33271c1116ee870f266618eadfc2e78aa7349c@52.176.100.77:30303",
--- a/ethcore/res/ethereum/tobalaba.json
+++ b/ethcore/res/ethereum/tobalaba.json
--- a/ethcore/res/ethereum/volta.json
+++ b/ethcore/res/ethereum/volta.json
--- a/ethcore/service/Cargo.toml
+++ b/ethcore/service/Cargo.toml
@@ -1,4 +1,5 @@
 [package]
+description = "Parity Ethereum (EthCore) Client & Network Service Creation & Registration with the I/O Subsystem"
 name = "ethcore-service"
 version = "0.1.0"
 authors = ["Parity Technologies <admin@parity.io>"]
--- a/ethcore/service/src/service.rs
+++ b/ethcore/service/src/service.rs
@@ -30,8 +30,10 @@ use blockchain::{BlockChainDB, BlockChainDBHandler};
 use ethcore::client::{Client, ClientConfig, ChainNotify, ClientIoMessage};
 use ethcore::miner::Miner;
 use ethcore::snapshot::service::{Service as SnapshotService, ServiceParams as SnapServiceParams};
-use ethcore::snapshot::{SnapshotService as _SnapshotService, RestorationStatus};
+use ethcore::snapshot::{SnapshotService as _SnapshotService, RestorationStatus, Error as SnapshotError};
 use ethcore::spec::Spec;
+use ethcore::error::{Error as EthcoreError, ErrorKind};
+

 use ethcore_private_tx::{self, Importer, Signer};
 use Error;
@@ -197,6 +199,7 @@ impl ClientService {

 	/// Shutdown the Client Service
 	pub fn shutdown(&self) {
+		trace!(target: "shutdown", "Shutting down Client Service");
 		self.snapshot.shutdown();
 	}
 }
@@ -257,7 +260,11 @@ impl IoHandler<ClientIoMessage> for ClientIoHandler {

 				let res = thread::Builder::new().name("Periodic Snapshot".into()).spawn(move || {
 					if let Err(e) = snapshot.take_snapshot(&*client, num) {
-						warn!("Failed to take snapshot at block #{}: {}", num, e);
+						match e {
+							EthcoreError(ErrorKind::Snapshot(SnapshotError::SnapshotAborted), _) => info!("Snapshot aborted"),
+							_ => warn!("Failed to take snapshot at block #{}: {}", num, e),
+						}
+
 					}
 				});

--- a/ethcore/src/client/client.rs
+++ b/ethcore/src/client/client.rs
@@ -25,7 +25,7 @@ use blockchain::{BlockReceipts, BlockChain, BlockChainDB, BlockProvider, TreeRou
 use bytes::Bytes;
 use call_contract::{CallContract, RegistryInfo};
 use ethcore_miner::pool::VerifiedTransaction;
-use ethereum_types::{H256, Address, U256};
+use ethereum_types::{H256, H264, Address, U256};
 use evm::Schedule;
 use hash::keccak;
 use io::IoChannel;
@@ -86,7 +86,7 @@ pub use types::blockchain_info::BlockChainInfo;
 pub use types::block_status::BlockStatus;
 pub use blockchain::CacheSize as BlockChainCacheSize;
 pub use verification::QueueInfo as BlockQueueInfo;
-use db::Writable;
+use db::{Writable, Readable, keys::BlockDetails};

 use_contract!(registry, "res/contracts/registrar.json");

@@ -764,8 +764,8 @@ impl Client {
 			liveness: AtomicBool::new(awake),
 			mode: Mutex::new(config.mode.clone()),
 			chain: RwLock::new(chain),
-			tracedb: tracedb,
-			engine: engine,
+			tracedb,
+			engine,
 			pruning: config.pruning.clone(),
 			db: RwLock::new(db.clone()),
 			state_db: RwLock::new(state_db),
@@ -778,8 +778,8 @@ impl Client {
 			ancient_blocks_import_lock: Default::default(),
 			queue_consensus_message: IoChannelQueue::new(usize::max_value()),
 			last_hashes: RwLock::new(VecDeque::new()),
-			factories: factories,
-			history: history,
+			factories,
+			history,
 			on_user_defaults_change: Mutex::new(None),
 			registrar_address,
 			exit_handler: Mutex::new(None),
@@ -1109,7 +1109,7 @@ impl Client {
 				let mut ss = self.sleep_state.lock();
 				if let Some(t) = ss.last_activity {
 					if Instant::now() > t + timeout {
-						self.sleep();
+						self.sleep(false);
 						ss.last_activity = None;
 					}
 				}
@@ -1119,7 +1119,7 @@ impl Client {
 				let now = Instant::now();
 				if let Some(t) = ss.last_activity {
 					if now > t + timeout {
-						self.sleep();
+						self.sleep(false);
 						ss.last_activity = None;
 						ss.last_autosleep = Some(now);
 					}
@@ -1138,7 +1138,12 @@ impl Client {

 	/// Take a snapshot at the given block.
 	/// If the ID given is "latest", this will default to 1000 blocks behind.
-	pub fn take_snapshot<W: snapshot_io::SnapshotWriter + Send>(&self, writer: W, at: BlockId, p: &snapshot::Progress) -> Result<(), EthcoreError> {
+	pub fn take_snapshot<W: snapshot_io::SnapshotWriter + Send>(
+		&self,
+		writer: W,
+		at: BlockId,
+		p: &snapshot::Progress,
+	) -> Result<(), EthcoreError> {
 		let db = self.state_db.read().journal_db().boxed_clone();
 		let best_block_number = self.chain_info().best_block_number;
 		let block_number = self.block_number(at).ok_or_else(|| snapshot::Error::InvalidStartingBlock(at))?;
@@ -1168,8 +1173,16 @@ impl Client {
 		};

 		let processing_threads = self.config.snapshot.processing_threads;
-		snapshot::take_snapshot(&*self.engine, &self.chain.read(), start_hash, db.as_hash_db(), writer, p, processing_threads)?;
-
+		let chunker = self.engine.snapshot_components().ok_or(snapshot::Error::SnapshotsUnsupported)?;
+		snapshot::take_snapshot(
+			chunker,
+			&self.chain.read(),
+			start_hash,
+			db.as_hash_db(),
+			writer,
+			p,
+			processing_threads,
+		)?;
 		Ok(())
 	}

@@ -1205,10 +1218,10 @@ impl Client {
 		}
 	}

-	fn sleep(&self) {
+	fn sleep(&self, force: bool) {
 		if self.liveness.load(AtomicOrdering::Relaxed) {
 			// only sleep if the import queue is mostly empty.
-			if self.queue_info().total_queue_size() <= MAX_QUEUE_SIZE_TO_SLEEP_ON {
+			if force || (self.queue_info().total_queue_size() <= MAX_QUEUE_SIZE_TO_SLEEP_ON) {
 				self.liveness.store(false, AtomicOrdering::Relaxed);
 				self.notify(|n| n.stop());
 				info!(target: "mode", "sleep: Sleeping.");
@@ -1327,37 +1340,60 @@ impl BlockChainReset for Client {
 	fn reset(&self, num: u32) -> Result<(), String> {
 		if num as u64 > self.pruning_history() {
 			return Err("Attempting to reset to block with pruned state".into())
+		} else if num == 0 {
+			return Err("invalid number of blocks to reset".into())
 		}

-		let (blocks_to_delete, best_block_hash) = self.chain.read()
-			.block_headers_from_best_block(num)
-			.ok_or("Attempted to reset past genesis block")?;
+		let mut blocks_to_delete = Vec::with_capacity(num as usize);
+		let mut best_block_hash = self.chain.read().best_block_hash();
+		let mut batch = DBTransaction::with_capacity(blocks_to_delete.len());

-		let mut db_transaction = DBTransaction::with_capacity((num + 1) as usize);
+		for _ in 0..num {
+			let current_header = self.chain.read().block_header_data(&best_block_hash)
+				.expect("best_block_hash was fetched from db; block_header_data should exist in db; qed");
+			best_block_hash = current_header.parent_hash();

-		for hash in &blocks_to_delete {
-			db_transaction.delete(::db::COL_HEADERS, &hash.hash());
-			db_transaction.delete(::db::COL_BODIES, &hash.hash());
-			db_transaction.delete(::db::COL_EXTRA, &hash.hash());
+			let (number, hash) = (current_header.number(), current_header.hash());
+			batch.delete(::db::COL_HEADERS, &hash);
+			batch.delete(::db::COL_BODIES, &hash);
+			Writable::delete::<BlockDetails, H264>
+				(&mut batch, ::db::COL_EXTRA, &hash);
 			Writable::delete::<H256, BlockNumberKey>
-				(&mut db_transaction, ::db::COL_EXTRA, &hash.number());
+				(&mut batch, ::db::COL_EXTRA, &number);
+
+			blocks_to_delete.push((number, hash));
 		}

+		let hashes = blocks_to_delete.iter().map(|(_, hash)| hash).collect::<Vec<_>>();
+		info!("Deleting block hashes {}",
+			  Colour::Red
+				  .bold()
+				  .paint(format!("{:#?}", hashes))
+		);
+
+		let mut best_block_details = Readable::read::<BlockDetails, H264>(
+			&**self.db.read().key_value(),
+			::db::COL_EXTRA,
+			&best_block_hash
+		).expect("block was previously imported; best_block_details should exist; qed");
+
+		let (_, last_hash) = blocks_to_delete.last()
+			.expect("num is > 0; blocks_to_delete can't be empty; qed");
+		// remove the last block as a child so that it can be re-imported
+		// ethcore/blockchain/src/blockchain.rs/Blockchain::is_known_child()
+		best_block_details.children.retain(|h| *h != *last_hash);
+		batch.write(
+			::db::COL_EXTRA,
+			&best_block_hash,
+			&best_block_details
+		);
 		// update the new best block hash
-		db_transaction.put(::db::COL_EXTRA, b"best", &*best_block_hash);
+		batch.put(::db::COL_EXTRA, b"best", &best_block_hash);

 		self.db.read()
 			.key_value()
-			.write(db_transaction)
-			.map_err(|err| format!("could not complete reset operation; io error occured: {}", err))?;
-
-		let hashes = blocks_to_delete.iter().map(|b| b.hash()).collect::<Vec<_>>();
-
-		info!("Deleting block hashes {}",
-			Colour::Red
-				.bold()
-				.paint(format!("{:#?}", hashes))
-		);
+			.write(batch)
+			.map_err(|err| format!("could not delete blocks; io error occurred: {}", err))?;

 		info!("New best block hash {}", Colour::Green.bold().paint(format!("{:?}", best_block_hash)));

@@ -1694,7 +1730,7 @@ impl BlockChainClient for Client {
 		}
 		match new_mode {
 			Mode::Active => self.wake_up(),
-			Mode::Off => self.sleep(),
+			Mode::Off => self.sleep(true),
 			_ => {(*self.sleep_state.lock()).last_activity = Some(Instant::now()); }
 		}
 	}
--- a/ethcore/src/engines/authority_round/mod.rs
+++ b/ethcore/src/engines/authority_round/mod.rs
@@ -22,7 +22,7 @@ use std::iter::FromIterator;
 use std::ops::Deref;
 use std::sync::atomic::{AtomicUsize, AtomicBool, Ordering as AtomicOrdering};
 use std::sync::{Weak, Arc};
-use std::time::{UNIX_EPOCH, SystemTime, Duration};
+use std::time::{UNIX_EPOCH, Duration};

 use block::*;
 use client::EngineClient;
@@ -42,14 +42,12 @@ use itertools::{self, Itertools};
 use rlp::{encode, Decodable, DecoderError, Encodable, RlpStream, Rlp};
 use ethereum_types::{H256, H520, Address, U128, U256};
 use parking_lot::{Mutex, RwLock};
+use time_utils::CheckedSystemTime;
 use types::BlockNumber;
 use types::header::{Header, ExtendedHeader};
 use types::ancestry_action::AncestryAction;
 use unexpected::{Mismatch, OutOfBounds};

-#[cfg(not(time_checked_add))]
-use time_utils::CheckedSystemTime;
-
 mod finality;

 /// `AuthorityRound` params.
@@ -578,10 +576,10 @@ fn verify_timestamp(step: &Step, header_step: u64) -> Result<(), BlockError> {
 			// Returning it further won't recover the sync process.
 			trace!(target: "engine", "verify_timestamp: block too early");

-			let now = SystemTime::now();
-			let found = now.checked_add(Duration::from_secs(oob.found)).ok_or(BlockError::TimestampOverflow)?;
-			let max = oob.max.and_then(|m| now.checked_add(Duration::from_secs(m)));
-			let min = oob.min.and_then(|m| now.checked_add(Duration::from_secs(m)));
+			let found = CheckedSystemTime::checked_add(UNIX_EPOCH, Duration::from_secs(oob.found))
+				.ok_or(BlockError::TimestampOverflow)?;
+			let max = oob.max.and_then(|m| CheckedSystemTime::checked_add(UNIX_EPOCH, Duration::from_secs(m)));
+			let min = oob.min.and_then(|m| CheckedSystemTime::checked_add(UNIX_EPOCH, Duration::from_secs(m)));

 			let new_oob = OutOfBounds { min, max, found };

--- a/ethcore/src/engines/clique/block_state.rs
+++ b/ethcore/src/engines/clique/block_state.rs
@@ -24,13 +24,11 @@ use engines::clique::{VoteType, DIFF_INTURN, DIFF_NOTURN, NULL_AUTHOR, SIGNING_D
 use error::{Error, BlockError};
 use ethereum_types::{Address, H64};
 use rand::Rng;
+use time_utils::CheckedSystemTime;
 use types::BlockNumber;
 use types::header::Header;
 use unexpected::Mismatch;

-#[cfg(not(feature = "time_checked_add"))]
-use time_utils::CheckedSystemTime;
-
 /// Type that keeps track of the state for a given vote
 // Votes that go against the proposal aren't counted since it's equivalent to not voting
 #[derive(Copy, Clone, Debug, PartialEq, PartialOrd)]
@@ -268,7 +266,7 @@ impl CliqueBlockState {
 	// This is a quite bad API because we must mutate both variables even when already `inturn` fails
 	// That's why we can't return early and must have the `if-else` in the end
 	pub fn calc_next_timestamp(&mut self, timestamp: u64, period: u64) -> Result<(), Error> {
-		let inturn = UNIX_EPOCH.checked_add(Duration::from_secs(timestamp.saturating_add(period)));
+		let inturn = CheckedSystemTime::checked_add(UNIX_EPOCH, Duration::from_secs(timestamp.saturating_add(period)));

 		self.next_timestamp_inturn = inturn;

--- a/ethcore/src/engines/clique/mod.rs
+++ b/ethcore/src/engines/clique/mod.rs
@@ -67,6 +67,7 @@ use std::time;
 use std::time::{Duration, SystemTime, UNIX_EPOCH};

 use block::ExecutedBlock;
+use bytes::Bytes;
 use client::{BlockId, EngineClient};
 use engines::clique::util::{extract_signers, recover_creator};
 use engines::{Engine, EngineError, Seal};
@@ -81,12 +82,10 @@ use parking_lot::RwLock;
 use rand::Rng;
 use super::signer::EngineSigner;
 use unexpected::{Mismatch, OutOfBounds};
+use time_utils::CheckedSystemTime;
 use types::BlockNumber;
 use types::header::{ExtendedHeader, Header};

-#[cfg(not(feature = "time_checked_add"))]
-use time_utils::CheckedSystemTime;
-
 use self::block_state::CliqueBlockState;
 use self::params::CliqueParams;
 use self::step_service::StepService;
@@ -535,7 +534,7 @@ impl Engine<EthereumMachine> for Clique {

 		// Don't waste time checking blocks from the future
 		{
-			let limit = SystemTime::now().checked_add(Duration::from_secs(self.period))
+			let limit = CheckedSystemTime::checked_add(SystemTime::now(), Duration::from_secs(self.period))
 				.ok_or(BlockError::TimestampOverflow)?;

 			// This should succeed under the contraints that the system clock works
@@ -545,7 +544,7 @@ impl Engine<EthereumMachine> for Clique {

 			let hdr = Duration::from_secs(header.timestamp());
 			if hdr > limit_as_dur {
-				let found = UNIX_EPOCH.checked_add(hdr).ok_or(BlockError::TimestampOverflow)?;
+				let found = CheckedSystemTime::checked_add(UNIX_EPOCH, hdr).ok_or(BlockError::TimestampOverflow)?;

 				Err(BlockError::TemporarilyInvalid(OutOfBounds {
 					min: None,
@@ -656,8 +655,8 @@ impl Engine<EthereumMachine> for Clique {
 		// Ensure that the block's timestamp isn't too close to it's parent
 		let limit = parent.timestamp().saturating_add(self.period);
 		if limit > header.timestamp() {
-			let max = UNIX_EPOCH.checked_add(Duration::from_secs(header.timestamp()));
-			let found = UNIX_EPOCH.checked_add(Duration::from_secs(limit))
+			let max = CheckedSystemTime::checked_add(UNIX_EPOCH, Duration::from_secs(header.timestamp()));
+			let found = CheckedSystemTime::checked_add(UNIX_EPOCH, Duration::from_secs(limit))
 				.ok_or(BlockError::TimestampOverflow)?;

 			Err(BlockError::InvalidTimestamp(OutOfBounds {
@@ -713,6 +712,13 @@ impl Engine<EthereumMachine> for Clique {
 						header.set_difficulty(DIFF_NOTURN);
 					}
 				}
+
+				let zero_padding_len = VANITY_LENGTH - header.extra_data().len();
+				if zero_padding_len > 0 {
+					let mut resized_extra_data = header.extra_data().clone();
+					resized_extra_data.resize(VANITY_LENGTH, 0);
+					header.set_extra_data(resized_extra_data);
+				}
 			} else {
 				trace!(target: "engine", "populate_from_parent: no signer registered");
 			}
--- a/ethcore/src/ethereum/mod.rs
+++ b/ethcore/src/ethereum/mod.rs
@@ -57,9 +57,14 @@ pub fn new_poanet<'a, T: Into<SpecParams<'a>>>(params: T) -> Spec {
 	load(params.into(), include_bytes!("../../res/ethereum/poacore.json"))
 }

-/// Create a new Tobalaba mainnet chain spec.
-pub fn new_tobalaba<'a, T: Into<SpecParams<'a>>>(params: T) -> Spec {
-	load(params.into(), include_bytes!("../../res/ethereum/tobalaba.json"))
+/// Create a new Volta mainnet chain spec.
+pub fn new_volta<'a, T: Into<SpecParams<'a>>>(params: T) -> Spec {
+	load(params.into(), include_bytes!("../../res/ethereum/volta.json"))
+}
+
+/// Create a new EWC mainnet chain spec.
+pub fn new_ewc<'a, T: Into<SpecParams<'a>>>(params: T) -> Spec {
+	load(params.into(), include_bytes!("../../res/ethereum/ewc.json"))
 }

 /// Create a new Expanse mainnet chain spec.
--- a/ethcore/src/executive.rs
+++ b/ethcore/src/executive.rs
@@ -33,7 +33,7 @@ use externalities::*;
 use trace::{self, Tracer, VMTracer};
 use types::transaction::{Action, SignedTransaction};
 use transaction_ext::Transaction;
-use crossbeam;
+use crossbeam_utils::thread;
 pub use executed::{Executed, ExecutionResult};

 #[cfg(debug_assertions)]
@@ -976,11 +976,18 @@ impl<'a, B: 'a + StateBackend> Executive<'a, B> {
 		if stack_depth != depth_threshold {
 			self.call_with_stack_depth(params, substate, stack_depth, tracer, vm_tracer)
 		} else {
-			crossbeam::scope(|scope| {
-				scope.builder().stack_size(::std::cmp::max(self.schedule.max_depth.saturating_sub(depth_threshold) * STACK_SIZE_PER_DEPTH, local_stack_size)).spawn(move || {
-					self.call_with_stack_depth(params, substate, stack_depth, tracer, vm_tracer)
-				}).expect("Sub-thread creation cannot fail; the host might run out of resources; qed")
-			}).join().expect("Sub-thread never panics; qed")
+			thread::scope(|scope| {
+				let stack_size = cmp::max(self.schedule.max_depth.saturating_sub(depth_threshold) * STACK_SIZE_PER_DEPTH, local_stack_size);
+				scope.builder()
+					.stack_size(stack_size)
+					.spawn(|_| {
+						self.call_with_stack_depth(params, substate, stack_depth, tracer, vm_tracer)
+					})
+					.expect("Sub-thread creation cannot fail; the host might run out of resources; qed")
+					.join()
+			})
+			.expect("Sub-thread never panics; qed")
+			.expect("Sub-thread never panics; qed")
 		}
 	}

@@ -1060,11 +1067,18 @@ impl<'a, B: 'a + StateBackend> Executive<'a, B> {
 		if stack_depth != depth_threshold {
 			self.create_with_stack_depth(params, substate, stack_depth, tracer, vm_tracer)
 		} else {
-			crossbeam::scope(|scope| {
-				scope.builder().stack_size(::std::cmp::max(self.schedule.max_depth.saturating_sub(depth_threshold) * STACK_SIZE_PER_DEPTH, local_stack_size)).spawn(move || {
-					self.create_with_stack_depth(params, substate, stack_depth, tracer, vm_tracer)
-				}).expect("Sub-thread creation cannot fail; the host might run out of resources; qed")
-			}).join().expect("Sub-thread never panics; qed")
+			thread::scope(|scope| {
+				let stack_size = cmp::max(self.schedule.max_depth.saturating_sub(depth_threshold) * STACK_SIZE_PER_DEPTH, local_stack_size);
+				scope.builder()
+					.stack_size(stack_size)
+					.spawn(|_| {
+						self.create_with_stack_depth(params, substate, stack_depth, tracer, vm_tracer)
+					})
+					.expect("Sub-thread creation cannot fail; the host might run out of resources; qed")
+					.join()
+			})
+			.expect("Sub-thread never panics; qed")
+			.expect("Sub-thread never panics; qed")
 		}
 	}

--- a/ethcore/src/externalities.rs
+++ b/ethcore/src/externalities.rs
@@ -314,7 +314,11 @@ impl<'a, T: 'a, V: 'a, B: 'a> Ext for Externalities<'a, T, V, B>
 	}

 	fn extcodehash(&self, address: &Address) -> vm::Result<Option<H256>> {
-		Ok(self.state.code_hash(address)?)
+		if self.state.exists_and_not_null(address)? {
+			Ok(self.state.code_hash(address)?)
+		} else {
+			Ok(None)
+		}
 	}

 	fn extcodesize(&self, address: &Address) -> vm::Result<Option<usize>> {
--- a/ethcore/src/lib.rs
+++ b/ethcore/src/lib.rs
@@ -15,7 +15,6 @@
 // along with Parity Ethereum.  If not, see <http://www.gnu.org/licenses/>.

 #![warn(missing_docs, unused_extern_crates)]
-#![cfg_attr(feature = "time_checked_add", feature(time_checked_add))]

 //! Ethcore library
 //!
@@ -62,7 +61,7 @@ extern crate ansi_term;
 extern crate bn;
 extern crate byteorder;
 extern crate common_types as types;
-extern crate crossbeam;
+extern crate crossbeam_utils;
 extern crate ethabi;
 extern crate ethash;
 extern crate ethcore_blockchain as blockchain;
@@ -100,6 +99,7 @@ extern crate rlp;
 extern crate rustc_hex;
 extern crate serde;
 extern crate stats;
+extern crate time_utils;
 extern crate triehash_ethereum as triehash;
 extern crate unexpected;
 extern crate using_queue;
@@ -149,9 +149,6 @@ extern crate fetch;
 #[cfg(all(test, feature = "price-info"))]
 extern crate parity_runtime;

-#[cfg(not(time_checked_add))]
-extern crate time_utils;
-
 pub mod block;
 pub mod builtin;
 pub mod client;
--- a/ethcore/src/snapshot/account.rs
+++ b/ethcore/src/snapshot/account.rs
@@ -24,9 +24,10 @@ use ethtrie::{TrieDB, TrieDBMut};
 use hash::{KECCAK_EMPTY, KECCAK_NULL_RLP};
 use hash_db::HashDB;
 use rlp::{RlpStream, Rlp};
-use snapshot::Error;
+use snapshot::{Error, Progress};
 use std::collections::HashSet;
 use trie::{Trie, TrieMut};
+use std::sync::atomic::Ordering;

 // An empty account -- these were replaced with RLP null data for a space optimization in v1.
 const ACC_EMPTY: BasicAccount = BasicAccount {
@@ -65,8 +66,16 @@ impl CodeState {
 // walk the account's storage trie, returning a vector of RLP items containing the
 // account address hash, account properties and the storage. Each item contains at most `max_storage_items`
 // storage records split according to snapshot format definition.
-pub fn to_fat_rlps(account_hash: &H256, acc: &BasicAccount, acct_db: &AccountDB, used_code: &mut HashSet<H256>, first_chunk_size: usize, max_chunk_size: usize) -> Result<Vec<Bytes>, Error> {
-	let db = &(acct_db as &HashDB<_,_>);
+pub fn to_fat_rlps(
+	account_hash: &H256,
+	acc: &BasicAccount,
+	acct_db: &AccountDB,
+	used_code: &mut HashSet<H256>,
+	first_chunk_size: usize,
+	max_chunk_size: usize,
+	p: &Progress,
+) -> Result<Vec<Bytes>, Error> {
+	let db = &(acct_db as &dyn HashDB<_,_>);
 	let db = TrieDB::new(db, &acc.storage_root)?;
 	let mut chunks = Vec::new();
 	let mut db_iter = db.iter()?;
@@ -112,6 +121,10 @@ pub fn to_fat_rlps(account_hash: &H256, acc: &BasicAccount, acct_db: &AccountDB,
 		}

 		loop {
+			if p.abort.load(Ordering::SeqCst) {
+				trace!(target: "snapshot", "to_fat_rlps: aborting snapshot");
+				return Err(Error::SnapshotAborted);
+			}
 			match db_iter.next() {
 				Some(Ok((k, v))) => {
 					let pair = {
@@ -211,6 +224,7 @@ mod tests {
 	use types::basic_account::BasicAccount;
 	use test_helpers::get_temp_state_db;
 	use snapshot::tests::helpers::fill_storage;
+	use snapshot::Progress;

 	use hash::{KECCAK_EMPTY, KECCAK_NULL_RLP, keccak};
 	use ethereum_types::{H256, Address};
@@ -236,8 +250,8 @@ mod tests {

 		let thin_rlp = ::rlp::encode(&account);
 		assert_eq!(::rlp::decode::<BasicAccount>(&thin_rlp).unwrap(), account);
-
-		let fat_rlps = to_fat_rlps(&keccak(&addr), &account, &AccountDB::new(db.as_hash_db(), &addr), &mut Default::default(), usize::max_value(), usize::max_value()).unwrap();
+		let p = Progress::default();
+		let fat_rlps = to_fat_rlps(&keccak(&addr), &account, &AccountDB::new(db.as_hash_db(), &addr), &mut Default::default(), usize::max_value(), usize::max_value(), &p).unwrap();
 		let fat_rlp = Rlp::new(&fat_rlps[0]).at(1).unwrap();
 		assert_eq!(from_fat_rlp(&mut AccountDBMut::new(db.as_hash_db_mut(), &addr), fat_rlp, H256::zero()).unwrap().0, account);
 	}
@@ -262,7 +276,9 @@ mod tests {
 		let thin_rlp = ::rlp::encode(&account);
 		assert_eq!(::rlp::decode::<BasicAccount>(&thin_rlp).unwrap(), account);

-		let fat_rlp = to_fat_rlps(&keccak(&addr), &account, &AccountDB::new(db.as_hash_db(), &addr), &mut Default::default(), usize::max_value(), usize::max_value()).unwrap();
+		let p = Progress::default();
+
+		let fat_rlp = to_fat_rlps(&keccak(&addr), &account, &AccountDB::new(db.as_hash_db(), &addr), &mut Default::default(), usize::max_value(), usize::max_value(), &p).unwrap();
 		let fat_rlp = Rlp::new(&fat_rlp[0]).at(1).unwrap();
 		assert_eq!(from_fat_rlp(&mut AccountDBMut::new(db.as_hash_db_mut(), &addr), fat_rlp, H256::zero()).unwrap().0, account);
 	}
@@ -287,7 +303,8 @@ mod tests {
 		let thin_rlp = ::rlp::encode(&account);
 		assert_eq!(::rlp::decode::<BasicAccount>(&thin_rlp).unwrap(), account);

-		let fat_rlps = to_fat_rlps(&keccak(addr), &account, &AccountDB::new(db.as_hash_db(), &addr), &mut Default::default(), 500, 1000).unwrap();
+		let p = Progress::default();
+		let fat_rlps = to_fat_rlps(&keccak(addr), &account, &AccountDB::new(db.as_hash_db(), &addr), &mut Default::default(), 500, 1000, &p).unwrap();
 		let mut root = KECCAK_NULL_RLP;
 		let mut restored_account = None;
 		for rlp in fat_rlps {
@@ -319,20 +336,21 @@ mod tests {
 			nonce: 50.into(),
 			balance: 123456789.into(),
 			storage_root: KECCAK_NULL_RLP,
-			code_hash: code_hash,
+			code_hash,
 		};

 		let account2 = BasicAccount {
 			nonce: 400.into(),
 			balance: 98765432123456789usize.into(),
 			storage_root: KECCAK_NULL_RLP,
-			code_hash: code_hash,
+			code_hash,
 		};

 		let mut used_code = HashSet::new();
-
-		let fat_rlp1 = to_fat_rlps(&keccak(&addr1), &account1, &AccountDB::new(db.as_hash_db(), &addr1), &mut used_code, usize::max_value(), usize::max_value()).unwrap();
-		let fat_rlp2 = to_fat_rlps(&keccak(&addr2), &account2, &AccountDB::new(db.as_hash_db(), &addr2), &mut used_code, usize::max_value(), usize::max_value()).unwrap();
+		let p1 = Progress::default();
+		let p2 = Progress::default();
+		let fat_rlp1 = to_fat_rlps(&keccak(&addr1), &account1, &AccountDB::new(db.as_hash_db(), &addr1), &mut used_code, usize::max_value(), usize::max_value(), &p1).unwrap();
+		let fat_rlp2 = to_fat_rlps(&keccak(&addr2), &account2, &AccountDB::new(db.as_hash_db(), &addr2), &mut used_code, usize::max_value(), usize::max_value(), &p2).unwrap();
 		assert_eq!(used_code.len(), 1);

 		let fat_rlp1 = Rlp::new(&fat_rlp1[0]).at(1).unwrap();
@@ -350,6 +368,6 @@ mod tests {
 	#[test]
 	fn encoding_empty_acc() {
 		let mut db = get_temp_state_db();
-		assert_eq!(from_fat_rlp(&mut AccountDBMut::new(db.as_hash_db_mut(), &Address::default()), Rlp::new(&::rlp::NULL_RLP), H256::zero()).unwrap(), (ACC_EMPTY, None));
+		assert_eq!(from_fat_rlp(&mut AccountDBMut::new(db.as_hash_db_mut(), &Address::zero()), Rlp::new(&::rlp::NULL_RLP), H256::zero()).unwrap(), (ACC_EMPTY, None));
 	}
 }
--- a/ethcore/src/snapshot/error.rs
+++ b/ethcore/src/snapshot/error.rs
@@ -61,6 +61,8 @@ pub enum Error {
 	ChunkTooLarge,
 	/// Snapshots not supported by the consensus engine.
 	SnapshotsUnsupported,
+	/// Aborted snapshot
+	SnapshotAborted,
 	/// Bad epoch transition.
 	BadEpochProof(u64),
 	/// Wrong chunk format.
@@ -91,6 +93,7 @@ impl fmt::Display for Error {
 			Error::ChunkTooSmall => write!(f, "Chunk size is too small."),
 			Error::ChunkTooLarge => write!(f, "Chunk size is too large."),
 			Error::SnapshotsUnsupported => write!(f, "Snapshots unsupported by consensus engine."),
+			Error::SnapshotAborted => write!(f, "Snapshot was aborted."),
 			Error::BadEpochProof(i) => write!(f, "Bad epoch proof for transition to epoch {}", i),
 			Error::WrongChunkFormat(ref msg) => write!(f, "Wrong chunk format: {}", msg),
 			Error::UnlinkedAncientBlockChain => write!(f, "Unlinked ancient blocks chain"),
--- a/ethcore/src/snapshot/io.rs
+++ b/ethcore/src/snapshot/io.rs
@@ -310,10 +310,7 @@ impl LooseReader {

 		dir.pop();

-		Ok(LooseReader {
-			dir: dir,
-			manifest: manifest,
-		})
+		Ok(LooseReader { dir, manifest })
 	}
 }

--- a/ethcore/src/snapshot/mod.rs
+++ b/ethcore/src/snapshot/mod.rs
@@ -22,7 +22,7 @@
 use std::collections::{HashMap, HashSet};
 use std::cmp;
 use std::sync::Arc;
-use std::sync::atomic::{AtomicBool, AtomicUsize, Ordering};
+use std::sync::atomic::{AtomicBool, AtomicU64, AtomicUsize, Ordering};
 use hash::{keccak, KECCAK_NULL_RLP, KECCAK_EMPTY};

 use account_db::{AccountDB, AccountDBMut};
@@ -50,7 +50,7 @@ use self::io::SnapshotWriter;
 use super::state_db::StateDB;
 use super::state::Account as StateAccount;

-use crossbeam::scope;
+use crossbeam_utils::thread;
 use rand::{Rng, OsRng};

 pub use self::error::Error;
@@ -107,7 +107,7 @@ impl Default for SnapshotConfiguration {
 	fn default() -> Self {
 		SnapshotConfiguration {
 			no_periodic: false,
-			processing_threads: ::std::cmp::max(1, num_cpus::get() / 2),
+			processing_threads: ::std::cmp::max(1, num_cpus::get_physical() / 2),
 		}
 	}
 }
@@ -117,8 +117,9 @@ impl Default for SnapshotConfiguration {
 pub struct Progress {
 	accounts: AtomicUsize,
 	blocks: AtomicUsize,
-	size: AtomicUsize, // Todo [rob] use Atomicu64 when it stabilizes.
+	size: AtomicU64,
 	done: AtomicBool,
+	abort: AtomicBool,
 }

 impl Progress {
@@ -127,6 +128,7 @@ impl Progress {
 		self.accounts.store(0, Ordering::Release);
 		self.blocks.store(0, Ordering::Release);
 		self.size.store(0, Ordering::Release);
+		self.abort.store(false, Ordering::Release);

 		// atomic fence here to ensure the others are written first?
 		// logs might very rarely get polluted if not.
@@ -140,7 +142,7 @@ impl Progress {
 	pub fn blocks(&self) -> usize { self.blocks.load(Ordering::Acquire) }

 	/// Get the written size of the snapshot in bytes.
-	pub fn size(&self) -> usize { self.size.load(Ordering::Acquire) }
+	pub fn size(&self) -> u64 { self.size.load(Ordering::Acquire) }

 	/// Whether the snapshot is complete.
 	pub fn done(&self) -> bool  { self.done.load(Ordering::Acquire) }
@@ -148,27 +150,28 @@ impl Progress {
 }
 /// Take a snapshot using the given blockchain, starting block hash, and database, writing into the given writer.
 pub fn take_snapshot<W: SnapshotWriter + Send>(
-	engine: &EthEngine,
+	chunker: Box<dyn SnapshotComponents>,
 	chain: &BlockChain,
-	block_at: H256,
-	state_db: &HashDB<KeccakHasher, DBValue>,
+	block_hash: H256,
+	state_db: &dyn HashDB<KeccakHasher, DBValue>,
 	writer: W,
 	p: &Progress,
 	processing_threads: usize,
 ) -> Result<(), Error> {
-	let start_header = chain.block_header_data(&block_at)
-		.ok_or_else(|| Error::InvalidStartingBlock(BlockId::Hash(block_at)))?;
+	let start_header = chain.block_header_data(&block_hash)
+		.ok_or_else(|| Error::InvalidStartingBlock(BlockId::Hash(block_hash)))?;
 	let state_root = start_header.state_root();
-	let number = start_header.number();
+	let block_number = start_header.number();

-	info!("Taking snapshot starting at block {}", number);
+	info!("Taking snapshot starting at block {}", block_number);

+	let version = chunker.current_version();
 	let writer = Mutex::new(writer);
-	let chunker = engine.snapshot_components().ok_or(Error::SnapshotsUnsupported)?;
-	let snapshot_version = chunker.current_version();
-	let (state_hashes, block_hashes) = scope(|scope| -> Result<(Vec<H256>, Vec<H256>), Error> {
+	let (state_hashes, block_hashes) = thread::scope(|scope| -> Result<(Vec<H256>, Vec<H256>), Error> {
 		let writer = &writer;
-		let block_guard = scope.spawn(move || chunk_secondary(chunker, chain, block_at, writer, p));
+		let block_guard = scope.spawn(move |_| {
+			chunk_secondary(chunker, chain, block_hash, writer, p)
+		});

 		// The number of threads must be between 1 and SNAPSHOT_SUBPARTS
 		assert!(processing_threads >= 1, "Cannot use less than 1 threads for creating snapshots");
@@ -178,12 +181,12 @@ pub fn take_snapshot<W: SnapshotWriter + Send>(
 		let mut state_guards = Vec::with_capacity(num_threads as usize);

 		for thread_idx in 0..num_threads {
-			let state_guard = scope.spawn(move || -> Result<Vec<H256>, Error> {
+			let state_guard = scope.spawn(move |_| -> Result<Vec<H256>, Error> {
 				let mut chunk_hashes = Vec::new();

 				for part in (thread_idx..SNAPSHOT_SUBPARTS).step_by(num_threads) {
 					debug!(target: "snapshot", "Chunking part {} in thread {}", part, thread_idx);
-					let mut hashes = chunk_state(state_db, &state_root, writer, p, Some(part))?;
+					let mut hashes = chunk_state(state_db, &state_root, writer, p, Some(part), thread_idx)?;
 					chunk_hashes.append(&mut hashes);
 				}

@@ -202,17 +205,17 @@ pub fn take_snapshot<W: SnapshotWriter + Send>(

 		debug!(target: "snapshot", "Took a snapshot of {} accounts", p.accounts.load(Ordering::SeqCst));
 		Ok((state_hashes, block_hashes))
-	})?;
+	}).expect("Sub-thread never panics; qed")?;

 	info!(target: "snapshot", "produced {} state chunks and {} block chunks.", state_hashes.len(), block_hashes.len());

 	let manifest_data = ManifestData {
-		version: snapshot_version,
-		state_hashes: state_hashes,
-		block_hashes: block_hashes,
-		state_root: state_root,
-		block_number: number,
-		block_hash: block_at,
+		version,
+		state_hashes,
+		block_hashes,
+		state_root,
+		block_number,
+		block_hash,
 	};

 	writer.into_inner().finish(manifest_data)?;
@@ -228,7 +231,13 @@ pub fn take_snapshot<W: SnapshotWriter + Send>(
 /// Secondary chunks are engine-specific, but they intend to corroborate the state data
 /// in the state chunks.
 /// Returns a list of chunk hashes, with the first having the blocks furthest from the genesis.
-pub fn chunk_secondary<'a>(mut chunker: Box<SnapshotComponents>, chain: &'a BlockChain, start_hash: H256, writer: &Mutex<SnapshotWriter + 'a>, progress: &'a Progress) -> Result<Vec<H256>, Error> {
+pub fn chunk_secondary<'a>(
+	mut chunker: Box<dyn SnapshotComponents>,
+	chain: &'a BlockChain,
+	start_hash: H256,
+	writer: &Mutex<dyn SnapshotWriter + 'a>,
+	progress: &'a Progress
+) -> Result<Vec<H256>, Error> {
 	let mut chunk_hashes = Vec::new();
 	let mut snappy_buffer = vec![0; snappy::max_compressed_len(PREFERRED_CHUNK_SIZE)];

@@ -243,7 +252,7 @@ pub fn chunk_secondary<'a>(mut chunker: Box<SnapshotComponents>, chain: &'a Bloc
 			trace!(target: "snapshot", "wrote secondary chunk. hash: {:x}, size: {}, uncompressed size: {}",
 				hash, size, raw_data.len());

-			progress.size.fetch_add(size, Ordering::SeqCst);
+			progress.size.fetch_add(size as u64, Ordering::SeqCst);
 			chunk_hashes.push(hash);
 			Ok(())
 		};
@@ -266,8 +275,9 @@ struct StateChunker<'a> {
 	rlps: Vec<Bytes>,
 	cur_size: usize,
 	snappy_buffer: Vec<u8>,
-	writer: &'a Mutex<SnapshotWriter + 'a>,
+	writer: &'a Mutex<dyn SnapshotWriter + 'a>,
 	progress: &'a Progress,
+	thread_idx: usize,
 }

 impl<'a> StateChunker<'a> {
@@ -297,10 +307,10 @@ impl<'a> StateChunker<'a> {
 		let hash = keccak(&compressed);

 		self.writer.lock().write_state_chunk(hash, compressed)?;
-		trace!(target: "snapshot", "wrote state chunk. size: {}, uncompressed size: {}", compressed_size, raw_data.len());
+		trace!(target: "snapshot", "Thread {} wrote state chunk. size: {}, uncompressed size: {}", self.thread_idx, compressed_size, raw_data.len());

 		self.progress.accounts.fetch_add(num_entries, Ordering::SeqCst);
-		self.progress.size.fetch_add(compressed_size, Ordering::SeqCst);
+		self.progress.size.fetch_add(compressed_size as u64, Ordering::SeqCst);

 		self.hashes.push(hash);
 		self.cur_size = 0;
@@ -321,7 +331,14 @@ impl<'a> StateChunker<'a> {
 ///
 /// Returns a list of hashes of chunks created, or any error it may
 /// have encountered.
-pub fn chunk_state<'a>(db: &HashDB<KeccakHasher, DBValue>, root: &H256, writer: &Mutex<SnapshotWriter + 'a>, progress: &'a Progress, part: Option<usize>) -> Result<Vec<H256>, Error> {
+pub fn chunk_state<'a>(
+	db: &dyn HashDB<KeccakHasher, DBValue>,
+	root: &H256,
+	writer: &Mutex<dyn SnapshotWriter + 'a>,
+	progress: &'a Progress,
+	part: Option<usize>,
+	thread_idx: usize,
+) -> Result<Vec<H256>, Error> {
 	let account_trie = TrieDB::new(&db, &root)?;

 	let mut chunker = StateChunker {
@@ -329,8 +346,9 @@ pub fn chunk_state<'a>(db: &HashDB<KeccakHasher, DBValue>, root: &H256, writer:
 		rlps: Vec::new(),
 		cur_size: 0,
 		snappy_buffer: vec![0; snappy::max_compressed_len(PREFERRED_CHUNK_SIZE)],
-		writer: writer,
-		progress: progress,
+		writer,
+		progress,
+		thread_idx,
 	};

 	let mut used_code = HashSet::new();
@@ -365,7 +383,7 @@ pub fn chunk_state<'a>(db: &HashDB<KeccakHasher, DBValue>, root: &H256, writer:
 		let account = ::rlp::decode(&*account_data)?;
 		let account_db = AccountDB::from_hash(db, account_key_hash);

-		let fat_rlps = account::to_fat_rlps(&account_key_hash, &account, &account_db, &mut used_code, PREFERRED_CHUNK_SIZE - chunker.chunk_size(), PREFERRED_CHUNK_SIZE)?;
+		let fat_rlps = account::to_fat_rlps(&account_key_hash, &account, &account_db, &mut used_code, PREFERRED_CHUNK_SIZE - chunker.chunk_size(), PREFERRED_CHUNK_SIZE, progress)?;
 		for (i, fat_rlp) in fat_rlps.into_iter().enumerate() {
 			if i > 0 {
 				chunker.write_chunk()?;
@@ -383,7 +401,7 @@ pub fn chunk_state<'a>(db: &HashDB<KeccakHasher, DBValue>, root: &H256, writer:

 /// Used to rebuild the state trie piece by piece.
 pub struct StateRebuilder {
-	db: Box<JournalDB>,
+	db: Box<dyn JournalDB>,
 	state_root: H256,
 	known_code: HashMap<H256, H256>, // code hashes mapped to first account with this code.
 	missing_code: HashMap<H256, Vec<H256>>, // maps code hashes to lists of accounts missing that code.
@@ -393,7 +411,7 @@ pub struct StateRebuilder {

 impl StateRebuilder {
 	/// Create a new state rebuilder to write into the given backing DB.
-	pub fn new(db: Arc<KeyValueDB>, pruning: Algorithm) -> Self {
+	pub fn new(db: Arc<dyn KeyValueDB>, pruning: Algorithm) -> Self {
 		StateRebuilder {
 			db: journaldb::new(db.clone(), pruning, ::db::COL_STATE),
 			state_root: KECCAK_NULL_RLP,
@@ -411,7 +429,7 @@ impl StateRebuilder {
 		let mut pairs = Vec::with_capacity(rlp.item_count()?);

 		// initialize the pairs vector with empty values so we have slots to write into.
-		pairs.resize(rlp.item_count()?, (H256::new(), Vec::new()));
+		pairs.resize(rlp.item_count()?, (H256::zero(), Vec::new()));

 		let status = rebuild_accounts(
 			self.db.as_hash_db_mut(),
@@ -468,7 +486,7 @@ impl StateRebuilder {
 	/// Finalize the restoration. Check for accounts missing code and make a dummy
 	/// journal entry.
 	/// Once all chunks have been fed, there should be nothing missing.
-	pub fn finalize(mut self, era: u64, id: H256) -> Result<Box<JournalDB>, ::error::Error> {
+	pub fn finalize(mut self, era: u64, id: H256) -> Result<Box<dyn JournalDB>, ::error::Error> {
 		let missing = self.missing_code.keys().cloned().collect::<Vec<_>>();
 		if !missing.is_empty() { return Err(Error::MissingCode(missing).into()) }

@@ -493,7 +511,7 @@ struct RebuiltStatus {
 // rebuild a set of accounts and their storage.
 // returns a status detailing newly-loaded code and accounts missing code.
 fn rebuild_accounts(
-	db: &mut HashDB<KeccakHasher, DBValue>,
+	db: &mut dyn HashDB<KeccakHasher, DBValue>,
 	account_fat_rlps: Rlp,
 	out_chunk: &mut [(H256, Bytes)],
 	known_code: &HashMap<H256, H256>,
@@ -560,7 +578,7 @@ const POW_VERIFY_RATE: f32 = 0.02;
 /// Verify an old block with the given header, engine, blockchain, body. If `always` is set, it will perform
 /// the fullest verification possible. If not, it will take a random sample to determine whether it will
 /// do heavy or light verification.
-pub fn verify_old_block(rng: &mut OsRng, header: &Header, engine: &EthEngine, chain: &BlockChain, always: bool) -> Result<(), ::error::Error> {
+pub fn verify_old_block(rng: &mut OsRng, header: &Header, engine: &dyn EthEngine, chain: &BlockChain, always: bool) -> Result<(), ::error::Error> {
 	engine.verify_block_basic(header)?;

 	if always || rng.gen::<f32>() <= POW_VERIFY_RATE {
--- a/ethcore/src/snapshot/service.rs
+++ b/ethcore/src/snapshot/service.rs
@@ -415,7 +415,7 @@ impl Service {
 				_ => break,
 			}

-			// Writting changes to DB and logging every now and then
+			// Writing changes to DB and logging every now and then
 			if block_number % 1_000 == 0 {
 				next_db.key_value().write_buffered(batch);
 				next_chain.commit();
@@ -479,16 +479,12 @@ impl Service {

 		let guard = Guard::new(temp_dir.clone());
 		let res = client.take_snapshot(writer, BlockId::Number(num), &self.progress);
-
 		self.taking_snapshot.store(false, Ordering::SeqCst);
 		if let Err(e) = res {
 			if client.chain_info().best_block_number >= num + client.pruning_history() {
-				// "Cancelled" is mincing words a bit -- what really happened
-				// is that the state we were snapshotting got pruned out
-				// before we could finish.
-				info!("Periodic snapshot failed: block state pruned.\
-					Run with a longer `--pruning-history` or with `--no-periodic-snapshot`");
-				return Ok(())
+				// The state we were snapshotting was pruned before we could finish.
+				info!("Periodic snapshot failed: block state pruned. Run with a longer `--pruning-history` or with `--no-periodic-snapshot`");
+				return Err(e);
 			} else {
 				return Err(e);
 			}
@@ -846,14 +842,29 @@ impl SnapshotService for Service {
 		}
 	}

+	fn abort_snapshot(&self) {
+		if self.taking_snapshot.load(Ordering::SeqCst) {
+			trace!(target: "snapshot", "Aborting snapshot – Snapshot under way");
+			self.progress.abort.store(true, Ordering::SeqCst);
+		}
+	}
+
 	fn shutdown(&self) {
+		trace!(target: "snapshot", "Shut down SnapshotService");
 		self.abort_restore();
+		trace!(target: "snapshot", "Shut down SnapshotService - restore aborted");
+		self.abort_snapshot();
+		trace!(target: "snapshot", "Shut down SnapshotService - snapshot aborted");
 	}
 }

 impl Drop for Service {
 	fn drop(&mut self) {
+		trace!(target: "shutdown", "Dropping Service");
 		self.abort_restore();
+		trace!(target: "shutdown", "Dropping Service - restore aborted");
+		self.abort_snapshot();
+		trace!(target: "shutdown", "Dropping Service - snapshot aborted");
 	}
 }

--- a/ethcore/src/snapshot/tests/service.rs
+++ b/ethcore/src/snapshot/tests/service.rs
@@ -188,14 +188,15 @@ fn keep_ancient_blocks() {
 		&state_root,
 		&writer,
 		&Progress::default(),
-		None
+		None,
+		0
 	).unwrap();

 	let manifest = ::snapshot::ManifestData {
 		version: 2,
-		state_hashes: state_hashes,
-		state_root: state_root,
-		block_hashes: block_hashes,
+		state_hashes,
+		state_root,
+		block_hashes,
 		block_number: NUM_BLOCKS,
 		block_hash: best_hash,
 	};
--- a/ethcore/src/snapshot/tests/state.rs
+++ b/ethcore/src/snapshot/tests/state.rs
@@ -55,7 +55,7 @@ fn snap_and_restore() {

 	let mut state_hashes = Vec::new();
 	for part in 0..SNAPSHOT_SUBPARTS {
-		let mut hashes = chunk_state(&old_db, &state_root, &writer, &Progress::default(), Some(part)).unwrap();
+		let mut hashes = chunk_state(&old_db, &state_root, &writer, &Progress::default(), Some(part), 0).unwrap();
 		state_hashes.append(&mut hashes);
 	}

@@ -126,8 +126,8 @@ fn get_code_from_prev_chunk() {
 	let mut make_chunk = |acc, hash| {
 		let mut db = journaldb::new_memory_db();
 		AccountDBMut::from_hash(&mut db, hash).insert(&code[..]);
-
-		let fat_rlp = account::to_fat_rlps(&hash, &acc, &AccountDB::from_hash(&db, hash), &mut used_code, usize::max_value(), usize::max_value()).unwrap();
+		let p = Progress::default();
+		let fat_rlp = account::to_fat_rlps(&hash, &acc, &AccountDB::from_hash(&db, hash), &mut used_code, usize::max_value(), usize::max_value(), &p).unwrap();
 		let mut stream = RlpStream::new_list(1);
 		stream.append_raw(&fat_rlp[0], 1);
 		stream.out()
@@ -171,13 +171,13 @@ fn checks_flag() {
 	let state_root = producer.state_root();
 	let writer = Mutex::new(PackedWriter::new(&snap_file).unwrap());

-	let state_hashes = chunk_state(&old_db, &state_root, &writer, &Progress::default(), None).unwrap();
+	let state_hashes = chunk_state(&old_db, &state_root, &writer, &Progress::default(), None, 0).unwrap();

 	writer.into_inner().finish(::snapshot::ManifestData {
 		version: 2,
-		state_hashes: state_hashes,
+		state_hashes,
 		block_hashes: Vec::new(),
-		state_root: state_root,
+		state_root,
 		block_number: 0,
 		block_hash: H256::default(),
 	}).unwrap();
--- a/ethcore/src/snapshot/traits.rs
+++ b/ethcore/src/snapshot/traits.rs
@@ -55,6 +55,9 @@ pub trait SnapshotService : Sync + Send {
 	/// no-op if currently restoring.
 	fn restore_block_chunk(&self, hash: H256, chunk: Bytes);

+	/// Abort in-progress snapshotting if there is one.
+	fn abort_snapshot(&self);
+
 	/// Shutdown the Snapshot Service by aborting any ongoing restore
 	fn shutdown(&self);
 }
--- a/ethcore/src/tests/client.rs
+++ b/ethcore/src/tests/client.rs
@@ -27,7 +27,7 @@ use types::filter::Filter;
 use types::view;
 use types::views::BlockView;

-use client::{BlockChainClient, Client, ClientConfig, BlockId, ChainInfo, BlockInfo, PrepareOpenBlock, ImportSealedBlock, ImportBlock};
+use client::{BlockChainClient, BlockChainReset, Client, ClientConfig, BlockId, ChainInfo, BlockInfo, PrepareOpenBlock, ImportSealedBlock, ImportBlock};
 use ethereum;
 use executive::{Executive, TransactOptions};
 use miner::{Miner, PendingOrdering, MinerService};
@@ -366,3 +366,23 @@ fn transaction_proof() {
 	assert_eq!(state.balance(&Address::default()).unwrap(), 5.into());
 	assert_eq!(state.balance(&address).unwrap(), 95.into());
 }
+
+#[test]
+fn reset_blockchain() {
+	let client = get_test_client_with_blocks(get_good_dummy_block_seq(19));
+	// 19 + genesis block
+	assert!(client.block_header(BlockId::Number(20)).is_some());
+	assert_eq!(client.block_header(BlockId::Number(20)).unwrap().hash(), client.best_block_header().hash());
+
+	assert!(client.reset(5).is_ok());
+
+	client.chain().clear_cache();
+
+	assert!(client.block_header(BlockId::Number(20)).is_none());
+	assert!(client.block_header(BlockId::Number(19)).is_none());
+	assert!(client.block_header(BlockId::Number(18)).is_none());
+	assert!(client.block_header(BlockId::Number(17)).is_none());
+	assert!(client.block_header(BlockId::Number(16)).is_none());
+
+	assert!(client.block_header(BlockId::Number(15)).is_some());
+}
--- a/ethcore/src/verification/verification.rs
+++ b/ethcore/src/verification/verification.rs
@@ -40,7 +40,6 @@ use types::{BlockNumber, header::Header};
 use types::transaction::SignedTransaction;
 use verification::queue::kind::blocks::Unverified;

-#[cfg(not(time_checked_add))]
 use time_utils::CheckedSystemTime;

 /// Preprocessed block data gathered in `verify_block_unordered` call
@@ -310,7 +309,7 @@ pub fn verify_header_params(header: &Header, engine: &EthEngine, is_full: bool,
 		// this will resist overflow until `year 2037`
 		let max_time = SystemTime::now() + ACCEPTABLE_DRIFT;
 		let invalid_threshold = max_time + ACCEPTABLE_DRIFT * 9;
-		let timestamp = UNIX_EPOCH.checked_add(Duration::from_secs(header.timestamp()))
+		let timestamp = CheckedSystemTime::checked_add(UNIX_EPOCH, Duration::from_secs(header.timestamp()))
 			.ok_or(BlockError::TimestampOverflow)?;

 		if timestamp > invalid_threshold {
@@ -334,9 +333,9 @@ fn verify_parent(header: &Header, parent: &Header, engine: &EthEngine) -> Result

 	if !engine.is_timestamp_valid(header.timestamp(), parent.timestamp()) {
 		let now = SystemTime::now();
-		let min = now.checked_add(Duration::from_secs(parent.timestamp().saturating_add(1)))
+		let min = CheckedSystemTime::checked_add(now, Duration::from_secs(parent.timestamp().saturating_add(1)))
 			.ok_or(BlockError::TimestampOverflow)?;
-		let found = now.checked_add(Duration::from_secs(header.timestamp()))
+		let found = CheckedSystemTime::checked_add(now, Duration::from_secs(header.timestamp()))
 			.ok_or(BlockError::TimestampOverflow)?;
 		return Err(From::from(BlockError::InvalidTimestamp(OutOfBounds { max: None, min: Some(min), found })))
 	}
--- a/ethcore/sync/Cargo.toml
+++ b/ethcore/sync/Cargo.toml
@@ -1,5 +1,5 @@
 [package]
-description = "Ethcore blockchain sync"
+description = "Parity Ethereum (EthCore) Blockchain Synchronization (Strategy, Blockchain Downloader, Blockchain Synchronization Implementation of Ethereum Protocol, Propagating Data to Peers, Requesting Data from Peers, Supplying Data in Response to Peer Requests, Handling Peer Responses, Matching Packet IDs and Protocol, Light Client Synchronization of Header Chain, Header Download State Machine, Light Decoding & Verifying Header Responses, Private Transaction Handling, Synchronization Snapshot Service to Download & Verify Block Chunks, Peer Connection Management and Blockchain Client I/O Interface for Synchronization Handler, Transaction Statistics)"
 name = "ethcore-sync"
 version = "1.12.0"
 license = "GPL-3.0"
--- a/ethcore/sync/src/chain/mod.rs
+++ b/ethcore/sync/src/chain/mod.rs
@@ -962,7 +962,7 @@ impl ChainSync {
 					}

 					// Only ask for old blocks if the peer has an equal or higher difficulty
-					let equal_or_higher_difficulty = peer_difficulty.map_or(false, |pd| pd >= syncing_difficulty);
+					let equal_or_higher_difficulty = peer_difficulty.map_or(true, |pd| pd >= syncing_difficulty);

 					if force || equal_or_higher_difficulty {
 						if let Some(request) = self.old_blocks.as_mut().and_then(|d| d.request_blocks(peer_id, io, num_active_peers)) {
--- a/ethcore/sync/src/tests/snapshot.rs
+++ b/ethcore/sync/src/tests/snapshot.rs
@@ -122,6 +122,8 @@ impl SnapshotService for TestSnapshotService {
 		self.block_restoration_chunks.lock().clear();
 	}

+	fn abort_snapshot(&self) {}
+
 	fn restore_state_chunk(&self, hash: H256, chunk: Bytes) {
 		if self.restoration_manifest.lock().as_ref().map_or(false, |m| m.state_hashes.iter().any(|h| h == &hash)) {
 			self.state_restoration_chunks.lock().insert(hash, chunk);
--- a/ethcore/types/Cargo.toml
+++ b/ethcore/types/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
+description = "Parity Ethereum Common Types"
 name = "common-types"
-description = "Common types used throughout the codebase"
 version = "0.1.0"
 authors = ["Parity Technologies <admin@parity.io>"]

--- a/ethcore/types/src/restoration_status.rs
+++ b/ethcore/types/src/restoration_status.rs
@@ -21,7 +21,7 @@
 pub enum RestorationStatus {
 	///	No restoration.
 	Inactive,
-	/// Restoration is initalizing
+	/// Restoration is initializing
 	Initializing {
 		/// Number of chunks done/imported
 		chunks_done: u32,
--- a/ethcore/vm/Cargo.toml
+++ b/ethcore/vm/Cargo.toml
@@ -1,4 +1,5 @@
 [package]
+description = "Virtual Machines (VM) Support Library"
 name = "vm"
 version = "0.1.0"
 authors = ["Parity Technologies <admin@parity.io>"]
--- a/ethcore/wasm/Cargo.toml
+++ b/ethcore/wasm/Cargo.toml
@@ -1,4 +1,5 @@
 [package]
+description = "WASM Interpreter"
 name = "wasm"
 version = "0.1.0"
 authors = ["Parity Technologies <admin@parity.io>"]
--- a/ethcore/wasm/run/Cargo.toml
+++ b/ethcore/wasm/run/Cargo.toml
@@ -1,4 +1,5 @@
 [package]
+description = "Parity WASM Test Run"
 name = "pwasm-run-test"
 version = "0.1.0"
 authors = ["Parity Technologies <admin@parity.io>"]
--- a/evmbin/Cargo.toml
+++ b/evmbin/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
+description = "Parity EVM Implementation"
 name = "evmbin"
-description = "Parity's EVM implementation"
 version = "0.1.0"
 authors = ["Parity Technologies <admin@parity.io>"]

--- a/ipfs/Cargo.toml
+++ b/ipfs/Cargo.toml
@@ -1,5 +1,5 @@
 [package]
-description = "Parity IPFS-compatible API"
+description = "Parity Ethereum IPFS-compatible API"
 name = "parity-ipfs-api"
 version = "1.12.0"
 license = "GPL-3.0"
--- a/json/Cargo.toml
+++ b/json/Cargo.toml
@@ -1,4 +1,5 @@
 [package]
+description = "Parity Ethereum JSON Deserialization"
 name = "ethjson"
 version = "0.1.0"
 authors = ["Parity Technologies <admin@parity.io>"]
--- a/miner/Cargo.toml
+++ b/miner/Cargo.toml
@@ -1,5 +1,5 @@
 [package]
-description = "Parity Miner interface."
+description = "Parity Ethereum Miner Interface."
 name = "ethcore-miner"
 homepage = "http://parity.io"
 license = "GPL-3.0"
--- a/parity/cli/mod.rs
+++ b/parity/cli/mod.rs
@@ -300,7 +300,7 @@ usage! {

 			ARG arg_chain: (String) = "foundation", or |c: &Config| c.parity.as_ref()?.chain.clone(),
 			"--chain=[CHAIN]",
-			"Specify the blockchain type. CHAIN may be either a JSON chain specification file or ethereum, classic, poacore, tobalaba, expanse, musicoin, ellaism, mix, callisto, morden, ropsten, kovan, rinkeby, goerli, kotti, poasokol, testnet, or dev.",
+			"Specify the blockchain type. CHAIN may be either a JSON chain specification file or ethereum, classic, poacore, volta, ewc, expanse, musicoin, ellaism, mix, callisto, morden, ropsten, kovan, rinkeby, goerli, kotti, poasokol, testnet, or dev.",

 			ARG arg_keys_path: (String) = "$BASE/keys", or |c: &Config| c.parity.as_ref()?.keys_path.clone(),
 			"--keys-path=[PATH]",
--- a/parity/configuration.rs
+++ b/parity/configuration.rs
@@ -16,7 +16,7 @@

 use std::time::Duration;
 use std::io::Read;
-use std::net::SocketAddr;
+use std::net::{SocketAddr, ToSocketAddrs};
 use std::num::NonZeroU32;
 use std::path::PathBuf;
 use std::collections::{HashSet, BTreeMap};
@@ -725,9 +725,18 @@ impl Configuration {
 		let port = self.args.arg_ports_shift + self.args.arg_port;
 		let listen_address = SocketAddr::new(self.interface(&self.args.arg_interface).parse().unwrap(), port);
 		let public_address = if self.args.arg_nat.starts_with("extip:") {
-			let host = &self.args.arg_nat[6..];
-			let host = host.parse().map_err(|_| format!("Invalid host given with `--nat extip:{}`", host))?;
-			Some(SocketAddr::new(host, port))
+			let host = self.args.arg_nat[6..].split(':').next().expect("split has at least one part; qed");
+			let host = format!("{}:{}", host, port);
+			match host.to_socket_addrs() {
+				Ok(mut addr_iter) => {
+					if let Some(addr) = addr_iter.next() {
+						Some(addr)
+					} else {
+						return Err(format!("Invalid host given with `--nat extip:{}`", &self.args.arg_nat[6..]))
+					}
+				},
+				Err(_) => return Err(format!("Invalid host given with `--nat extip:{}`", &self.args.arg_nat[6..]))
+			}
 		} else {
 			None
 		};
@@ -932,7 +941,7 @@ impl Configuration {
 			no_periodic: self.args.flag_no_periodic_snapshot,
 			processing_threads: match self.args.arg_snapshot_threads {
 				Some(threads) if threads > 0 => threads,
-				_ => ::std::cmp::max(1, num_cpus::get() / 2),
+				_ => ::std::cmp::max(1, num_cpus::get_physical() / 2),
 			},
 		};

@@ -1839,6 +1848,33 @@ mod tests {
 		assert_eq!(conf1.ipfs_config().port, 5002);
 	}

+	#[test]
+	fn should_resolve_external_nat_hosts() {
+		// Ip works
+		let conf = parse(&["parity", "--nat", "extip:1.1.1.1"]);
+		assert_eq!(conf.net_addresses().unwrap().1.unwrap().ip().to_string(), "1.1.1.1");
+		assert_eq!(conf.net_addresses().unwrap().1.unwrap().port(), 30303);
+
+		// Ip with port works, port is discarded
+		let conf = parse(&["parity", "--nat", "extip:192.168.1.1:123"]);
+		assert_eq!(conf.net_addresses().unwrap().1.unwrap().ip().to_string(), "192.168.1.1");
+		assert_eq!(conf.net_addresses().unwrap().1.unwrap().port(), 30303);
+
+		// Hostname works
+		let conf = parse(&["parity", "--nat", "extip:ethereum.org"]);
+		assert!(conf.net_addresses().unwrap().1.is_some());
+		assert_eq!(conf.net_addresses().unwrap().1.unwrap().port(), 30303);
+
+		// Hostname works, garbage at the end is discarded
+		let conf = parse(&["parity", "--nat", "extip:ethereum.org:whatever bla bla 123"]);
+		assert!(conf.net_addresses().unwrap().1.is_some());
+		assert_eq!(conf.net_addresses().unwrap().1.unwrap().port(), 30303);
+
+		// Garbage is error
+		let conf = parse(&["parity", "--nat", "extip:blabla"]);
+		assert!(conf.net_addresses().is_err());
+	}
+
 	#[test]
 	fn should_expose_all_servers() {
 		// given
--- a/parity/lib.rs
+++ b/parity/lib.rs
@@ -15,7 +15,6 @@
 // along with Parity Ethereum.  If not, see <http://www.gnu.org/licenses/>.

 //! Ethcore client application.
-
 #![warn(missing_docs)]

 extern crate ansi_term;
--- a/parity/logger/Cargo.toml
+++ b/parity/logger/Cargo.toml
@@ -1,5 +1,5 @@
 [package]
-description = "Log implementation for Parity"
+description = "Parity Ethereum Logger Implementation"
 name = "ethcore-logger"
 version = "1.12.0"
 license = "GPL-3.0"
--- a/parity/params.rs
+++ b/parity/params.rs
@@ -36,7 +36,8 @@ pub enum SpecType {
 	Foundation,
 	Classic,
 	Poanet,
-	Tobalaba,
+	Volta,
+	Ewc,
 	Expanse,
 	Musicoin,
 	Ellaism,
@@ -67,7 +68,8 @@ impl str::FromStr for SpecType {
 			"ethereum" | "frontier" | "homestead" | "byzantium" | "foundation" | "mainnet" => SpecType::Foundation,
 			"classic" | "frontier-dogmatic" | "homestead-dogmatic" => SpecType::Classic,
 			"poanet" | "poacore" => SpecType::Poanet,
-			"tobalaba" => SpecType::Tobalaba,
+			"volta" => SpecType::Volta,
+			"ewc" | "energyweb" => SpecType::Ewc,
 			"expanse" => SpecType::Expanse,
 			"musicoin" => SpecType::Musicoin,
 			"ellaism" => SpecType::Ellaism,
@@ -93,7 +95,8 @@ impl fmt::Display for SpecType {
 			SpecType::Foundation => "foundation",
 			SpecType::Classic => "classic",
 			SpecType::Poanet => "poanet",
-			SpecType::Tobalaba => "tobalaba",
+			SpecType::Volta => "volta",
+			SpecType::Ewc => "energyweb",
 			SpecType::Expanse => "expanse",
 			SpecType::Musicoin => "musicoin",
 			SpecType::Ellaism => "ellaism",
@@ -119,7 +122,8 @@ impl SpecType {
 			SpecType::Foundation => Ok(ethereum::new_foundation(params)),
 			SpecType::Classic => Ok(ethereum::new_classic(params)),
 			SpecType::Poanet => Ok(ethereum::new_poanet(params)),
-			SpecType::Tobalaba => Ok(ethereum::new_tobalaba(params)),
+			SpecType::Volta => Ok(ethereum::new_volta(params)),
+			SpecType::Ewc => Ok(ethereum::new_ewc(params)),
 			SpecType::Expanse => Ok(ethereum::new_expanse(params)),
 			SpecType::Musicoin => Ok(ethereum::new_musicoin(params)),
 			SpecType::Ellaism => Ok(ethereum::new_ellaism(params)),
@@ -376,7 +380,9 @@ mod tests {
 		assert_eq!(SpecType::Classic, "homestead-dogmatic".parse().unwrap());
 		assert_eq!(SpecType::Poanet, "poanet".parse().unwrap());
 		assert_eq!(SpecType::Poanet, "poacore".parse().unwrap());
-		assert_eq!(SpecType::Tobalaba, "tobalaba".parse().unwrap());
+		assert_eq!(SpecType::Volta, "volta".parse().unwrap());
+		assert_eq!(SpecType::Ewc, "ewc".parse().unwrap());
+		assert_eq!(SpecType::Ewc, "energyweb".parse().unwrap());
 		assert_eq!(SpecType::Expanse, "expanse".parse().unwrap());
 		assert_eq!(SpecType::Musicoin, "musicoin".parse().unwrap());
 		assert_eq!(SpecType::Ellaism, "ellaism".parse().unwrap());
@@ -405,7 +411,8 @@ mod tests {
 		assert_eq!(format!("{}", SpecType::Foundation), "foundation");
 		assert_eq!(format!("{}", SpecType::Classic), "classic");
 		assert_eq!(format!("{}", SpecType::Poanet), "poanet");
-		assert_eq!(format!("{}", SpecType::Tobalaba), "tobalaba");
+		assert_eq!(format!("{}", SpecType::Volta), "volta");
+		assert_eq!(format!("{}", SpecType::Ewc), "energyweb");
 		assert_eq!(format!("{}", SpecType::Expanse), "expanse");
 		assert_eq!(format!("{}", SpecType::Musicoin), "musicoin");
 		assert_eq!(format!("{}", SpecType::Ellaism), "ellaism");
--- a/parity/rpc_apis.rs
+++ b/parity/rpc_apis.rs
@@ -252,6 +252,7 @@ pub struct FullDependencies {
 	pub gas_price_percentile: usize,
 	pub poll_lifetime: u32,
 	pub allow_missing_blocks: bool,
+	pub no_ancient_blocks: bool,
 }

 impl FullDependencies {
@@ -303,6 +304,7 @@ impl FullDependencies {
 							gas_price_percentile: self.gas_price_percentile,
 							allow_missing_blocks: self.allow_missing_blocks,
 							allow_experimental_rpcs: self.experimental_rpcs,
+							no_ancient_blocks: self.no_ancient_blocks
 						}
 					);
 					handler.extend_with(client.to_delegate());
--- a/parity/run.rs
+++ b/parity/run.rs
@@ -742,6 +742,7 @@ fn execute_impl<Cr, Rr>(cmd: RunCmd, logger: Arc<RotatingLogger>, on_client_rq:
 		gas_price_percentile: cmd.gas_price_percentile,
 		poll_lifetime: cmd.poll_lifetime,
 		allow_missing_blocks: cmd.allow_missing_blocks,
+		no_ancient_blocks: !cmd.download_old_blocks,
 	});

 	let dependencies = rpc::Dependencies {
@@ -892,17 +893,27 @@ impl RunningClient {
 				// Create a weak reference to the client so that we can wait on shutdown
 				// until it is dropped
 				let weak_client = Arc::downgrade(&client);
-				// Shutdown and drop the ServiceClient
+				// Shutdown and drop the ClientService
 				client_service.shutdown();
+				trace!(target: "shutdown", "ClientService shut down");
 				drop(client_service);
+				trace!(target: "shutdown", "ClientService dropped");
 				// drop this stuff as soon as exit detected.
 				drop(rpc);
+				trace!(target: "shutdown", "RPC dropped");
 				drop(keep_alive);
+				trace!(target: "shutdown", "KeepAlive dropped");
 				// to make sure timer does not spawn requests while shutdown is in progress
 				informant.shutdown();
+				trace!(target: "shutdown", "Informant shut down");
 				// just Arc is dropping here, to allow other reference release in its default time
 				drop(informant);
+				trace!(target: "shutdown", "Informant dropped");
 				drop(client);
+				trace!(target: "shutdown", "Client dropped");
+				// This may help when debugging ref cycles. Requires nightly-only  `#![feature(weak_counts)]`
+				// trace!(target: "shutdown", "Waiting for refs to Client to shutdown, strong_count={:?}, weak_count={:?}", weak_client.strong_count(), weak_client.weak_count());
+				trace!(target: "shutdown", "Waiting for refs to Client to shutdown");
 				wait_for_drop(weak_client);
 			}
 		}
@@ -936,24 +947,30 @@ fn print_running_environment(data_dir: &str, dirs: &Directories, db_dirs: &Datab
 }

 fn wait_for_drop<T>(w: Weak<T>) {
-	let sleep_duration = Duration::from_secs(1);
-	let warn_timeout = Duration::from_secs(60);
-	let max_timeout = Duration::from_secs(300);
+	const SLEEP_DURATION: Duration = Duration::from_secs(1);
+	const WARN_TIMEOUT: Duration = Duration::from_secs(60);
+	const MAX_TIMEOUT: Duration = Duration::from_secs(300);

 	let instant = Instant::now();
 	let mut warned = false;

-	while instant.elapsed() < max_timeout {
+	while instant.elapsed() < MAX_TIMEOUT {
 		if w.upgrade().is_none() {
 			return;
 		}

-		if !warned && instant.elapsed() > warn_timeout {
+		if !warned && instant.elapsed() > WARN_TIMEOUT {
 			warned = true;
 			warn!("Shutdown is taking longer than expected.");
 		}

-		thread::sleep(sleep_duration);
+		thread::sleep(SLEEP_DURATION);
+
+		// When debugging shutdown issues on a nightly build it can help to enable this with the
+		// `#![feature(weak_counts)]` added to lib.rs (TODO: enable when
+		// https://github.com/rust-lang/rust/issues/57977 is stable)
+		// trace!(target: "shutdown", "Waiting for client to drop, strong_count={:?}, weak_count={:?}", w.strong_count(), w.weak_count());
+		trace!(target: "shutdown", "Waiting for client to drop");
 	}

 	warn!("Shutdown timeout reached, exiting uncleanly.");
--- a/parity/snapshot.rs
+++ b/parity/snapshot.rs
@@ -261,7 +261,7 @@ impl SnapshotCommand {
 				let cur_size = p.size();
 				if cur_size != last_size {
 					last_size = cur_size;
-					let bytes = ::informant::format_bytes(p.size());
+					let bytes = ::informant::format_bytes(cur_size as usize);
 					info!("Snapshot: {} accounts {} blocks {}", p.accounts(), p.blocks(), bytes);
 				}

--- a/rpc/Cargo.toml
+++ b/rpc/Cargo.toml
@@ -1,5 +1,5 @@
 [package]
-description = "Parity JSON-RPC servers."
+description = "Parity Ethereum JSON-RPC Servers (WS, HTTP, IPC)"
 name = "parity-rpc"
 version = "1.12.0"
 license = "GPL-3.0"
--- a/rpc/src/lib.rs
+++ b/rpc/src/lib.rs
@@ -14,7 +14,7 @@
 // You should have received a copy of the GNU General Public License
 // along with Parity Ethereum.  If not, see <http://www.gnu.org/licenses/>.

-//! Parity RPC.
+//! Parity Ethereum JSON-RPC Servers (WS, HTTP, IPC).

 #![warn(missing_docs, unused_extern_crates)]
 #![cfg_attr(feature = "cargo-clippy", warn(clippy::all, clippy::pedantic))]
--- a/rpc/src/v1/helpers/engine_signer.rs
+++ b/rpc/src/v1/helpers/engine_signer.rs
@@ -37,10 +37,7 @@ impl ethcore::engines::EngineSigner for EngineSigner {
 	fn sign(&self, message: ethkey::Message) -> Result<ethkey::Signature, ethkey::Error> {
 		match self.accounts.sign(self.address, Some(self.password.clone()), message) {
 			Ok(ok) => Ok(ok),
-			Err(e) => {
-				warn!("Unable to sign consensus message: {:?}", e);
-				Err(ethkey::Error::InvalidSecret)
-			},
+			Err(e) => Err(ethkey::Error::InvalidSecret),
 		}
 	}

--- a/rpc/src/v1/helpers/errors.rs
+++ b/rpc/src/v1/helpers/errors.rs
@@ -29,6 +29,7 @@ use light::on_demand::error::{Error as OnDemandError, ErrorKind as OnDemandError
 use ethcore::client::BlockChainClient;
 use types::blockchain_info::BlockChainInfo;
 use v1::types::BlockNumber;
+use v1::impls::EthClientOptions;

 mod codes {
 	// NOTE [ToDr] Codes from [-32099, -32000]
@@ -221,18 +222,34 @@ pub fn cannot_submit_work(err: EthcoreError) -> Error {
 	}
 }

-pub fn unavailable_block() -> Error {
-	Error {
-		code: ErrorCode::ServerError(codes::UNSUPPORTED_REQUEST),
-		message: "Ancient block sync is still in progress".into(),
-		data: None,
+pub fn unavailable_block(no_ancient_block: bool, by_hash: bool) -> Error {
+	if no_ancient_block {
+		Error {
+			code: ErrorCode::ServerError(codes::UNSUPPORTED_REQUEST),
+			message: "Looks like you disabled ancient block download, unfortunately the information you're \
+			trying to fetch doesn't exist in the db and is probably in the ancient blocks.".into(),
+			data: None,
+		}
+	} else if by_hash {
+		Error {
+			code: ErrorCode::ServerError(codes::UNSUPPORTED_REQUEST),
+			message: "Block information is incomplete while ancient block sync is still in progress, before \
+					it's finished we can't determine the existence of requested item.".into(),
+			data: None,
+		}
+	} else {
+		Error {
+			code: ErrorCode::ServerError(codes::UNSUPPORTED_REQUEST),
+			message: "Requested block number is in a range that is not available yet, because the ancient block sync is still in progress.".into(),
+			data: None,
+		}
 	}
 }

 pub fn check_block_number_existence<'a, T, C>(
 	client: &'a C,
 	num: BlockNumber,
-	allow_missing_blocks: bool,
+	options: EthClientOptions,
 ) ->
 	impl Fn(Option<T>) -> RpcResult<Option<T>> + 'a
 	where C: BlockChainClient,
@@ -242,8 +259,8 @@ pub fn check_block_number_existence<'a, T, C>(
 			if let BlockNumber::Num(block_number) = num {
 				// tried to fetch block number and got nothing even though the block number is
 				// less than the latest block number
-				if block_number < client.chain_info().best_block_number && !allow_missing_blocks {
-					return Err(unavailable_block());
+				if block_number < client.chain_info().best_block_number && !options.allow_missing_blocks {
+					return Err(unavailable_block(options.no_ancient_blocks, false));
 				}
 			}
 		}
@@ -253,22 +270,17 @@ pub fn check_block_number_existence<'a, T, C>(

 pub fn check_block_gap<'a, T, C>(
 	client: &'a C,
-	allow_missing_blocks: bool,
+	options: EthClientOptions,
 ) -> impl Fn(Option<T>) -> RpcResult<Option<T>> + 'a
 	where C: BlockChainClient,
 {
 	move |response| {
-		if response.is_none() && !allow_missing_blocks {
+		if response.is_none() && !options.allow_missing_blocks {
 			let BlockChainInfo { ancient_block_hash, .. } = client.chain_info();
 			// block information was requested, but unfortunately we couldn't find it and there
 			// are gaps in the database ethcore/src/blockchain/blockchain.rs
 			if ancient_block_hash.is_some() {
-				return Err(Error {
-					code: ErrorCode::ServerError(codes::UNSUPPORTED_REQUEST),
-					message: "Block information is incomplete while ancient block sync is still in progress, before \
-					it's finished we can't determine the existence of requested item.".into(),
-					data: None,
-				})
+				return Err(unavailable_block(options.no_ancient_blocks, true))
 			}
 		}
 		Ok(response)
--- a/rpc/src/v1/impls/eth.rs
+++ b/rpc/src/v1/impls/eth.rs
@@ -54,6 +54,7 @@ use v1::metadata::Metadata;
 const EXTRA_INFO_PROOF: &str = "Object exists in blockchain (fetched earlier), extra_info is always available if object exists; qed";

 /// Eth RPC options
+#[derive(Copy, Clone)]
 pub struct EthClientOptions {
 	/// Return nonce from transaction queue when pending block not available.
 	pub pending_nonce_from_queue: bool,
@@ -68,6 +69,8 @@ pub struct EthClientOptions {
 	pub allow_missing_blocks: bool,
 	/// Enable Experimental RPC-Calls
 	pub allow_experimental_rpcs: bool,
+	/// flag for ancient block sync
+	pub no_ancient_blocks: bool,
 }

 impl EthClientOptions {
@@ -89,6 +92,7 @@ impl Default for EthClientOptions {
 			gas_price_percentile: 50,
 			allow_missing_blocks: false,
 			allow_experimental_rpcs: false,
+			no_ancient_blocks: false,
 		}
 	}
 }
@@ -669,7 +673,7 @@ impl<C, SN: ?Sized, S: ?Sized, M, EM, T: StateInfo + 'static> Eth for EthClient<
 		let trx_count = self.client.block(BlockId::Hash(hash))
 			.map(|block| block.transactions_count().into());
 		let result = Ok(trx_count)
-			.and_then(errors::check_block_gap(&*self.client, self.options.allow_missing_blocks));
+			.and_then(errors::check_block_gap(&*self.client, self.options));
 		Box::new(future::done(result))
 	}

@@ -684,7 +688,7 @@ impl<C, SN: ?Sized, S: ?Sized, M, EM, T: StateInfo + 'static> Eth for EthClient<
 					.and_then(errors::check_block_number_existence(
 						&*self.client,
 						num,
-						self.options.allow_missing_blocks
+						self.options
 					))
 			}
 		}))
@@ -694,7 +698,7 @@ impl<C, SN: ?Sized, S: ?Sized, M, EM, T: StateInfo + 'static> Eth for EthClient<
 		let uncle_count = self.client.block(BlockId::Hash(hash))
 			.map(|block| block.uncles_count().into());
 		let result = Ok(uncle_count)
-			.and_then(errors::check_block_gap(&*self.client, self.options.allow_missing_blocks));
+			.and_then(errors::check_block_gap(&*self.client, self.options));
 		Box::new(future::done(result))
 	}

@@ -708,7 +712,7 @@ impl<C, SN: ?Sized, S: ?Sized, M, EM, T: StateInfo + 'static> Eth for EthClient<
 					.and_then(errors::check_block_number_existence(
 						&*self.client,
 						num,
-						self.options.allow_missing_blocks
+						self.options
 					))
 			}
 		}))
@@ -730,13 +734,13 @@ impl<C, SN: ?Sized, S: ?Sized, M, EM, T: StateInfo + 'static> Eth for EthClient<

 	fn block_by_hash(&self, hash: H256, include_txs: bool) -> BoxFuture<Option<RichBlock>> {
 		let result = self.rich_block(BlockId::Hash(hash).into(), include_txs)
-			.and_then(errors::check_block_gap(&*self.client, self.options.allow_missing_blocks));
+			.and_then(errors::check_block_gap(&*self.client, self.options));
 		Box::new(future::done(result))
 	}

 	fn block_by_number(&self, num: BlockNumber, include_txs: bool) -> BoxFuture<Option<RichBlock>> {
 		let result = self.rich_block(num.clone().into(), include_txs).and_then(
-			errors::check_block_number_existence(&*self.client, num, self.options.allow_missing_blocks));
+			errors::check_block_number_existence(&*self.client, num, self.options));
 		Box::new(future::done(result))
 	}

@@ -746,14 +750,14 @@ impl<C, SN: ?Sized, S: ?Sized, M, EM, T: StateInfo + 'static> Eth for EthClient<
 				.map(|t| Transaction::from_pending(t.pending().clone()))
 		});
 		let result = Ok(tx).and_then(
-			errors::check_block_gap(&*self.client, self.options.allow_missing_blocks));
+			errors::check_block_gap(&*self.client, self.options));
 		Box::new(future::done(result))
 	}

 	fn transaction_by_block_hash_and_index(&self, hash: H256, index: Index) -> BoxFuture<Option<Transaction>> {
 		let id = PendingTransactionId::Location(PendingOrBlock::Block(BlockId::Hash(hash)), index.value());
 		let result = self.transaction(id).and_then(
-			errors::check_block_gap(&*self.client, self.options.allow_missing_blocks));
+			errors::check_block_gap(&*self.client, self.options));
 		Box::new(future::done(result))
 	}

@@ -767,7 +771,7 @@ impl<C, SN: ?Sized, S: ?Sized, M, EM, T: StateInfo + 'static> Eth for EthClient<

 		let transaction_id = PendingTransactionId::Location(block_id, index.value());
 		let result = self.transaction(transaction_id).and_then(
-			errors::check_block_number_existence(&*self.client, num, self.options.allow_missing_blocks));
+			errors::check_block_number_existence(&*self.client, num, self.options));
 		Box::new(future::done(result))
 	}

@@ -781,7 +785,7 @@ impl<C, SN: ?Sized, S: ?Sized, M, EM, T: StateInfo + 'static> Eth for EthClient<

 		let receipt = self.client.transaction_receipt(TransactionId::Hash(hash));
 		let result = Ok(receipt.map(Into::into))
-			.and_then(errors::check_block_gap(&*self.client, self.options.allow_missing_blocks));
+			.and_then(errors::check_block_gap(&*self.client, self.options));
 		Box::new(future::done(result))
 	}

@@ -789,7 +793,7 @@ impl<C, SN: ?Sized, S: ?Sized, M, EM, T: StateInfo + 'static> Eth for EthClient<
 		let result = self.uncle(PendingUncleId {
 			id: PendingOrBlock::Block(BlockId::Hash(hash)),
 			position: index.value()
-		}).and_then(errors::check_block_gap(&*self.client, self.options.allow_missing_blocks));
+		}).and_then(errors::check_block_gap(&*self.client, self.options));
 		Box::new(future::done(result))
 	}

@@ -806,7 +810,7 @@ impl<C, SN: ?Sized, S: ?Sized, M, EM, T: StateInfo + 'static> Eth for EthClient<
 			.and_then(errors::check_block_number_existence(
 				&*self.client,
 				num,
-				self.options.allow_missing_blocks
+				self.options
 			));

 		Box::new(future::done(result))
--- a/rpc/src/v1/tests/eth.rs
+++ b/rpc/src/v1/tests/eth.rs
@@ -143,7 +143,8 @@ impl EthTester {
 				send_block_number_in_get_work: true,
 				gas_price_percentile: 50,
 				allow_experimental_rpcs: true,
-				allow_missing_blocks: false
+				allow_missing_blocks: false,
+				no_ancient_blocks: false
 			},
 		);

--- a/rpc/src/v1/tests/helpers/snapshot_service.rs
+++ b/rpc/src/v1/tests/helpers/snapshot_service.rs
@@ -48,6 +48,7 @@ impl SnapshotService for TestSnapshotService {
 	fn status(&self) -> RestorationStatus { self.status.lock().clone() }
 	fn begin_restore(&self, _manifest: ManifestData) { }
 	fn abort_restore(&self) { }
+	fn abort_snapshot(&self) {}
 	fn restore_state_chunk(&self, _hash: H256, _chunk: Bytes) { }
 	fn restore_block_chunk(&self, _hash: H256, _chunk: Bytes) { }
 	fn shutdown(&self) { }
--- a/scripts/docker/hub/Dockerfile
+++ b/scripts/docker/hub/Dockerfile
@@ -1,30 +1,48 @@
 FROM ubuntu:xenial
-LABEL MAINTAINER="Parity Technologies <devops-team@parity.io>"

-# install tools and dependencies
-RUN apt update && apt install -y --no-install-recommends openssl libudev-dev file curl jq
+# metadata
+ARG VCS_REF
+ARG BUILD_DATE
+
+LABEL io.parity.image.authors="devops-team@parity.io" \
+	io.parity.image.vendor="Parity Technologies" \
+	io.parity.image.title="parity/parity" \
+	io.parity.image.description="Parity Ethereum. The Fastest and most Advanced Ethereum Client." \
+	io.parity.image.source="https://github.com/paritytech/parity-ethereum/blob/${VCS_REF}/\
+scripts/docker/hub/Dockerfile" \
+	io.parity.image.documentation="https://wiki.parity.io/Parity-Ethereum" \
+	io.parity.image.revision="${VCS_REF}" \
+	io.parity.image.created="${BUILD_DATE}"

 # show backtraces
 ENV RUST_BACKTRACE 1

-# cleanup Docker image
-RUN apt autoremove -y \
-  && apt clean -y \
-  && rm -rf /tmp/* /var/tmp/* /var/lib/apt/lists/*
-
-RUN groupadd -g 1000 parity \
-  && useradd -m -u 1000 -g parity -s /bin/sh parity
+# install tools and dependencies
+RUN set -eux; \
+	apt-get update; \
+	apt-get install -y --no-install-recommends \
+		file curl jq; \
+# apt cleanup
+	apt-get autoremove -y; \
+	apt-get clean; \
+	rm -rf /tmp/* /var/tmp/* /var/lib/apt/lists/*; \
+# add user
+	groupadd -g 1000 parity; \
+	useradd -m -u 1000 -g parity -s /bin/sh parity

 WORKDIR /home/parity

-# add parity-ethereum to docker image
+# add parity-ethereum binary to docker image
 COPY artifacts/x86_64-unknown-linux-gnu/parity /bin/parity
-
-COPY scripts/docker/hub/check_sync.sh /check_sync.sh
+COPY tools/check_sync.sh /check_sync.sh

 # switch to user parity here
 USER parity

+# check if executable works in this container
+RUN parity --version
+
 EXPOSE 5001 8080 8082 8083 8545 8546 8180 30303/tcp 30303/udp

 ENTRYPOINT ["/bin/parity"]
+
--- a/scripts/docker/hub/publish-docker.sh
+++ b/scripts/docker/hub/publish-docker.sh
@@ -0,0 +1,67 @@
+#!/bin/sh
+
+set -e # fail on any error
+
+VERSION=$(cat ./tools/VERSION)
+TRACK=$(cat ./tools/TRACK)
+echo "Parity Ethereum version = ${VERSION}"
+echo "Parity Ethereum track = ${TRACK}"
+
+test "$Docker_Hub_User_Parity" -a "$Docker_Hub_Pass_Parity" \
+    || ( echo "no docker credentials provided"; exit 1 )
+docker login -u "$Docker_Hub_User_Parity" -p "$Docker_Hub_Pass_Parity"
+echo "__________Docker info__________"
+docker info
+
+# we stopped pushing nightlies to dockerhub, will push to own registry prb.
+case "${SCHEDULE_TAG:-${CI_COMMIT_REF_NAME}}" in
+    "$SCHEDULE_TAG")
+        echo "Docker TAG - 'parity/parity:${SCHEDULE_TAG}'";
+        docker build --no-cache \
+            --build-arg VCS_REF="${CI_COMMIT_SHA}" \
+            --build-arg BUILD_DATE="$(date -u '+%Y-%m-%dT%H:%M:%SZ')" \
+            --tag "parity/parity:${SCHEDULE_TAG}" \
+            --file tools/Dockerfile .;
+        docker push "parity/parity:${SCHEDULE_TAG}";;
+    "beta")
+        echo "Docker TAGs - 'parity/parity:beta', 'parity/parity:latest', \
+            'parity/parity:${VERSION}-${CI_COMMIT_REF_NAME}'";
+        docker build --no-cache \
+            --build-arg VCS_REF="${CI_COMMIT_SHA}" \
+            --build-arg BUILD_DATE="$(date -u '+%Y-%m-%dT%H:%M:%SZ')" \
+            --tag "parity/parity:beta" \
+            --tag "parity/parity:latest" \
+            --tag "parity/parity:${VERSION}-${CI_COMMIT_REF_NAME}" \
+            --file tools/Dockerfile .;
+        docker push "parity/parity:beta";
+        docker push "parity/parity:latest";
+        docker push "parity/parity:${VERSION}-${CI_COMMIT_REF_NAME}";;
+    "stable")
+        echo "Docker TAGs - 'parity/parity:${VERSION}-${CI_COMMIT_REF_NAME}', 'parity/parity:stable'";
+        docker build --no-cache \
+            --build-arg VCS_REF="${CI_COMMIT_SHA}" \
+            --build-arg BUILD_DATE="$(date -u '+%Y-%m-%dT%H:%M:%SZ')" \
+            --tag "parity/parity:${VERSION}-${CI_COMMIT_REF_NAME}" \
+            --tag "parity/parity:stable" \
+            --file tools/Dockerfile .;
+        docker push "parity/parity:${VERSION}-${CI_COMMIT_REF_NAME}";
+        docker push "parity/parity:stable";;
+    v[0-9]*.[0-9]*)
+        echo "Docker TAG - 'parity/parity:${VERSION}-${TRACK}'"
+        docker build --no-cache \
+            --build-arg VCS_REF="${CI_COMMIT_SHA}" \
+            --build-arg BUILD_DATE="$(date -u '+%Y-%m-%dT%H:%M:%SZ')" \
+            --tag "parity/parity:${VERSION}-${TRACK}" \
+            --file tools/Dockerfile .;
+        docker push "parity/parity:${VERSION}-${TRACK}";;
+    *)
+        echo "Docker TAG - 'parity/parity:${VERSION}-${CI_COMMIT_REF_NAME}'"
+        docker build --no-cache \
+            --build-arg VCS_REF="${CI_COMMIT_SHA}" \
+            --build-arg BUILD_DATE="$(date -u '+%Y-%m-%dT%H:%M:%SZ')" \
+            --tag "parity/parity:${VERSION}-${CI_COMMIT_REF_NAME}" \
+            --file tools/Dockerfile .;
+        docker push "parity/parity:${VERSION}-${CI_COMMIT_REF_NAME}";;
+esac
+
+docker logout
--- a/scripts/gitlab/build-linux.sh
+++ b/scripts/gitlab/build-linux.sh
@@ -18,13 +18,13 @@ cat .cargo/config
 echo "_____ Building target: "$CARGO_TARGET" _____"
 if [ "${CARGO_TARGET}" = "armv7-linux-androideabi" ]
 then
-  time cargo build --target $CARGO_TARGET --release -p parity-clib --features final
+  time cargo build --target $CARGO_TARGET --verbose --color=always --release -p parity-clib --features final
 else
-  time cargo build --target $CARGO_TARGET --release --features final
-  time cargo build --target $CARGO_TARGET --release -p evmbin
-  time cargo build --target $CARGO_TARGET --release -p ethstore-cli
-  time cargo build --target $CARGO_TARGET --release -p ethkey-cli
-  time cargo build --target $CARGO_TARGET --release -p whisper-cli
+  time cargo build --target $CARGO_TARGET --verbose --color=always --release --features final
+  time cargo build --target $CARGO_TARGET --verbose --color=always --release -p evmbin
+  time cargo build --target $CARGO_TARGET --verbose --color=always --release -p ethstore-cli
+  time cargo build --target $CARGO_TARGET --verbose --color=always --release -p ethkey-cli
+  time cargo build --target $CARGO_TARGET --verbose --color=always --release -p whisper-cli
 fi

 echo "_____ Post-processing binaries _____"
--- a/scripts/gitlab/build-windows.sh
+++ b/scripts/gitlab/build-windows.sh
@@ -14,11 +14,11 @@ echo "RUSTC_WRAPPER:    " $RUSTC_WRAPPER
 echo "SCCACHE_DIR:      " $SCCACHE_DIR

 echo "_____ Building target: "$CARGO_TARGET" _____"
-time cargo build --target $CARGO_TARGET --release --features final
-time cargo build --target $CARGO_TARGET --release -p evmbin
-time cargo build --target $CARGO_TARGET --release -p ethstore-cli
-time cargo build --target $CARGO_TARGET --release -p ethkey-cli
-time cargo build --target $CARGO_TARGET --release -p whisper-cli
+time cargo build --target $CARGO_TARGET --verbose --release --features final
+time cargo build --target $CARGO_TARGET --verbose --release -p evmbin
+time cargo build --target $CARGO_TARGET --verbose --release -p ethstore-cli
+time cargo build --target $CARGO_TARGET --verbose --release -p ethkey-cli
+time cargo build --target $CARGO_TARGET --verbose --release -p whisper-cli

 echo "__________Sign binaries__________"
 scripts/gitlab/sign-win.cmd $keyfile $certpass target/$CARGO_TARGET/release/parity.exe
--- a/scripts/gitlab/publish-av-whitelists.sh
+++ b/scripts/gitlab/publish-av-whitelists.sh
@@ -0,0 +1,25 @@
+#!/bin/bash
+set -e
+
+target_filename="parity-${CI_COMMIT_TAG:-${CI_COMMIT_REF_NAME}}.exe"
+apt -y update
+apt -y install ftp
+
+echo "__________Publish Windows binaries to Avast Whitelisting program__________"
+
+ftp -pinv whitelisting.avast.com <<EOF
+quote USER ftp_parityio
+quote PASS $avast_ftp_password
+cd /share
+put ./artifacts/x86_64-pc-windows-msvc/parity.exe $target_filename
+bye
+EOF
+
+echo "__________Publish Windows binaries to Kaspersky Whitelisting program__________"
+
+ftp -pinv whitelist1.kaspersky-labs.com <<EOF
+quote USER wl-ParityTech
+quote PASS $kaspersky_ftp_password
+put ./artifacts/x86_64-pc-windows-msvc/parity.exe $target_filename
+bye
+EOF
--- a/scripts/gitlab/publish-docker.sh
+++ b/scripts/gitlab/publish-docker.sh
@@ -1,22 +0,0 @@
-#!/bin/bash
-##ARGUMENTS: 1. Docker target
-set -e # fail on any error
-set -u # treat unset variables as error
-
-if [ "$CI_COMMIT_REF_NAME" == "master" ];
-	then export DOCKER_BUILD_TAG="${SCHEDULE_TAG:-latest}";
-	else export DOCKER_BUILD_TAG=$CI_COMMIT_REF_NAME;
-fi
-docker login -u $Docker_Hub_User_Parity -p $Docker_Hub_Pass_Parity
-
-echo "__________Docker TAG__________"
-echo $DOCKER_BUILD_TAG
-
-echo "__________Docker target__________"
-export DOCKER_TARGET=$1
-echo $DOCKER_TARGET
-
-echo "__________Docker build and push__________"
-docker build --build-arg TARGET=$DOCKER_TARGET --no-cache=true --tag parity/$DOCKER_TARGET:$DOCKER_BUILD_TAG -f scripts/docker/hub/Dockerfile .
-docker push parity/$DOCKER_TARGET:$DOCKER_BUILD_TAG
-docker logout
--- a/scripts/gitlab/publish-docs.sh
+++ b/scripts/gitlab/publish-docs.sh
@@ -33,8 +33,8 @@ update_wiki_docs() {

 setup_git() {
    echo "__________Set github__________"
-    git config --global user.email "devops@parity.com"
-    git config --global user.name "Devops Parity"
+    git config --global user.email "devops-team@parity.io"
+    git config --global user.name "Devops Team Parity"
 }

 set_remote_wiki() {
@@ -51,8 +51,11 @@ commit_files() {

 upload_files() {
    echo "__________Upload files__________"
-    git push -q origin HEAD
-    git push -q -f --tags
+    # this version of git (2.7.4) will dump the token on failure
+    git push -q origin HEAD 2>&1 \
+      | sed -r "s|(${GITHUB_USER}):[a-f0-9]+@|\1:REDACTED@|g"
+    git push -q -f --tags 2>&1 \
+      | sed -r "s|(${GITHUB_USER}):[a-f0-9]+@|\1:REDACTED@|g"
 }

 RPC_TRAITS_DIR="rpc/src/v1/traits"
--- a/scripts/gitlab/publish-onchain.sh
+++ b/scripts/gitlab/publish-onchain.sh
@@ -7,10 +7,7 @@ echo "__________Register Release__________"
 DATA="secret=$RELEASES_SECRET"

 echo "Pushing release to Mainnet"
-./scripts/gitlab/safe-curl.sh $DATA "http://update.parity.io:1337/push-release/${SCHEDULE_TAG:-${CI_COMMIT_REF_NAME}}/$CI_COMMIT_SHA"
-
-echo "Pushing release to Kovan"
-./scripts/gitlab/safe-curl.sh $DATA "http://update.parity.io:1338/push-release/${SCHEDULE_TAG:-${CI_COMMIT_REF_NAME}}/$CI_COMMIT_SHA"
+./tools/safe-curl.sh $DATA "http://update.parity.io:1337/push-release/${SCHEDULE_TAG:-${CI_COMMIT_REF_NAME}}/$CI_COMMIT_SHA"

 cd artifacts
 ls -l | sort -k9
@@ -29,9 +26,7 @@ do
  case $DIR in
    x86_64* )
      DATA="commit=$CI_COMMIT_SHA&sha3=$sha3&filename=parity$WIN&secret=$RELEASES_SECRET"
-      ../../scripts/gitlab/safe-curl.sh $DATA "http://update.parity.io:1337/push-build/${SCHEDULE_TAG:-${CI_COMMIT_REF_NAME}}/$DIR"
-      # Kovan
-      ../../scripts/gitlab/safe-curl.sh $DATA "http://update.parity.io:1338/push-build/${SCHEDULE_TAG:-${CI_COMMIT_REF_NAME}}/$DIR"
+      ../../tools/safe-curl.sh $DATA "http://update.parity.io:1337/push-build/${SCHEDULE_TAG:-${CI_COMMIT_REF_NAME}}/$DIR"
      ;;
  esac
  cd ..
--- a/scripts/gitlab/publish-snap.sh
+++ b/scripts/gitlab/publish-snap.sh
@@ -3,15 +3,11 @@
 set -e # fail on any error
 set -u # treat unset variables as error

-# some necromancy:
-# gsub(/"/, "", $2) deletes "qoutes"
-# gsub(/ /, "", $2) deletes whitespaces
-TRACK=`awk -F '=' '/^track/ {gsub(/"/, "", $2); gsub(/ /, "", $2); print $2}' ./util/version/Cargo.toml`
-echo Track is: $TRACK
 # prepare variables
-VERSION=v"$(sed -r -n '1,/^version/s/^version = "([^"]+)".*$/\1/p' Cargo.toml)"
+TRACK=$(cat ./tools/TRACK)
+echo "Track is: ${TRACK}"
+VERSION=$(cat ./tools/VERSION)
 SNAP_PACKAGE="parity_"$VERSION"_"$BUILD_ARCH".snap"
-CARGO_TARGET="$(ls artifacts)"
 # Choose snap release channel based on parity ethereum version track
 case ${TRACK} in
  nightly) export GRADE="devel" CHANNEL="edge";;
@@ -20,12 +16,8 @@ case ${TRACK} in
  *) echo "No release" && exit 0;;
 esac

-# Release untagged versions from branches to the candidate snap channel
-case ${CI_COMMIT_REF_NAME} in
-  beta|stable) export GRADE="stable" CHANNEL="candidate";;
-esac
 echo "__________Create snap package__________"
-echo "Release channel :" $GRADE " Branch/tag: " $CI_COMMIT_REF_NAME
+echo "Release channel :" $GRADE " Branch/tag: " $CI_COMMIT_REF_NAME "Track: " ${TRACK}
 echo $VERSION:$GRADE:$BUILD_ARCH:$CARGO_TARGET

 sed -e 's/$VERSION/'"$VERSION"'/g' \
--- a/scripts/gitlab/test-linux.sh
+++ b/scripts/gitlab/test-linux.sh
@@ -1,12 +1,18 @@
 #!/bin/bash
+# ARGUMENT $1 Rust flavor to run test with (stable/beta/nightly)
+
 echo "________Running test-linux.sh________"
 set -e # fail on any error
 set -u # treat unset variables as error

 FEATURES="json-tests,ci-skip-tests"
-OPTIONS="--release"
+OPTIONS=""
 #use nproc `linux only
 THREADS=$(nproc)

+rustup default $1
+rustup show
+
 echo "________Running Parity Full Test Suite________"
-time cargo test $OPTIONS --features "$FEATURES" --locked --all --target $CARGO_TARGET -- --test-threads $THREADS
+# Why are we using RUSTFLAGS? See https://github.com/paritytech/parity-ethereum/pull/10719
+CARGO_INCREMENTAL=0 RUSTFLAGS="-C opt-level=3 -C overflow-checks=on -C debuginfo=2" time cargo test $OPTIONS --features "$FEATURES" --locked --all --target $CARGO_TARGET --verbose --color=never -- --test-threads $THREADS
--- a/scripts/gitlab/validate-chainspecs.sh
+++ b/scripts/gitlab/validate-chainspecs.sh
@@ -6,7 +6,7 @@ echo "________Running validate_chainspecs.sh________"
 ERR=0

 echo "________Validate chainspecs________"
-time cargo build --release -p chainspec
+time cargo build --release -p chainspec --verbose --color=always

 for spec in ethcore/res/*.json; do
    if ! ./target/release/chainspec "$spec"; then ERR=1; fi
--- a/secret-store/Cargo.toml
+++ b/secret-store/Cargo.toml
@@ -1,5 +1,5 @@
 [package]
-description = "Ethcore Secret Store"
+description = "Parity Ethereum (EthCore) Secret Store"
 name = "ethcore-secretstore"
 version = "1.0.0"
 license = "GPL-3.0"
--- a/Show More
+++ b/Show More
Author	SHA1	Message	Date
s3krit	ff398fe7ff	V2.5.6 stable (#10961 ) - Fix cargo audit (#10921) - Add support for Energy Web Foundation's new chains (#10957) - Kaspersky AV whitelisting (#10919) - Avast whitelist script (#10900) - Docker images renaming (#10863) - Remove excessive warning (#10831) - Allow --nat extip:your.host.here.org (#10830) - When updating the client or when called from RPC, sleep should mean sleep (#10814) - added new ropsten-bootnode and removed old one (#10794) - ethkey no longer uses byteorder (#10786) - Do not drop the peer with None difficulty (#10772) - docs: Update Readme with TOC, Contributor Guideline. Update Cargo package descriptions (#10652)	2019-08-12 18:55:11 +02:00
s3krit	3ebc769757	version: stabilise v2.5 (#10857 )	2019-07-08 12:30:14 +02:00
s3krit	d60e6384d7	Beta 2.5.4 (#10827 ) * cargo update -p smallvec (#10822) Fixes https://github.com/servo/rust-smallvec/issues/148 * Update version to v2.5.3 Signed-off-by: Martin Pugh <pugh@s3kr.it>	2019-07-01 12:33:35 +02:00
s3krit	3fd58bdcbd	Beta 2.5.3 (#10776 ) * ethcore/res: activate atlantis classic hf on block 8772000 (#10766) * fix docker tags for publishing (#10741) * fix: aura don't add `SystemTime::now()` (#10720) This commit does the following: - Prevent overflow in `verify_timestamp()` by not adding `now` to found faulty timestamp - Use explicit `CheckedSystemTime::checked_add` to prevent potential consensus issues because SystemTime is platform depedent - remove `#[cfg(not(time_checked_add))]` conditional compilation * Update version * Treat empty account the same as non-exist accounts in EIP-1052 (#10775) * DevP2p: Get node IP address and udp port from Socket, if not included in PING packet (#10705) * get node IP address and udp port from Socket, if not included in PING packet * prevent bootnodes from being added to host nodes * code corrections * code corrections * code corrections * code corrections * docs * code corrections * code corrections * Apply suggestions from code review Co-Authored-By: David <dvdplm@gmail.com> * Add a way to signal shutdown to snapshotting threads (#10744) * Add a way to signal shutdown to snapshotting threads * Pass Progress to fat_rlps() so we can abort from there too. * Checking for abort in a single spot * Remove nightly-only weak/strong counts * fix warning * Fix tests * Add dummy impl to abort snapshots * Add another dummy impl for TestSnapshotService * Remove debugging code * Return error instead of the odd Ok(()) Switch to AtomicU64 * revert .as_bytes() change * fix build * fix build maybe	2019-06-25 13:38:29 +00:00
Talha Cross	ecbafb2390	backports for beta 2.5.2 (#10737 ) * version: bump beta to 2.5.2 * [CI] allow cargo audit to fail (#10676) * [CI] allow cargo audit to fail * [.gitlab-ci.yml] add a comment about cargo audit * [Cargo.lock] cargo update -p protobuf * Reset blockchain properly (#10669) * delete BlockDetails from COL_EXTRA * better proofs * added tests * PR suggestions * new image (#10673) * Update publishing (#10644) * docker images are now built on k8s: test run * copy check_sync.sh in build-linux job * copy scripts/docker/hub/* in build-linux job * removed cache var * cleanup, no more nightly dockers * cleanup in dockerfile * some new tags * removed sccsche debug log, cleanup * no_gits, new artifacts dir, changed scripts. Test run. * define version once * one source for TRACK * stop kovan onchain updates * moved changes for two images to a new branch * rename Dockerfile * no need in libudev-dev * enable lto for release builds (#10717) * Use RUSTFLAGS to set the optimization level (#10719) * Use RUSTFLAGS to set the optimization level Cargo has a [quirk]() in how configuration settings are propagated when `cargo test` runs: local code respect the settings in `[profile.test]` but all dependencies use the `[profile.dev]` settings. Here we force `opt-level=3` for all dependencies. * Remove unused profile settings * Maybe like this? * Turn off incremental compilation * Remove colors; try again with overflow-checks on * Use quiet CI machine * Turn overflow checking back on * Be explicit about what options we use * Remove "quiet machine" override * ethcore: enable ECIP-1054 for classic (#10731) * config: enable atlantis on ethereum classic * config: enable atlantis on morden classic * config: enable atlantis on morden classic * config: enable atlantis on kotti classic * ethcore: move kotti fork block to 0xAEF49 * ethcore: move morden fork block to 0x4829BA * ethcore: move classic fork block to 0x81B320 * remove trailing comma * remove trailing comma * fix chainspec * ethcore: move classic fork block to 0x7fffffffffffffff	2019-06-11 20:56:03 +02:00
Talha Cross	adabd8198c	beta ci: backport missing diff from master (#10661 ) * ci: publish docs debug (#10638) * ci: backport missing diff from master	2019-05-14 15:03:29 +02:00
Talha Cross	c2487cfe07	ci: publish docs debug (#10638 ) (#10660 )	2019-05-14 14:04:54 +02:00
Talha Cross	e0141f8324	beta 2.5.1 (#10643 ) * version: bump beta to 2.5.1 * fix(whisper expiry): current time + work + ttl (#10587) * update bootnodes (#10595) * config: update goerli bootnodes * config: update kotti bootnodes * adds rpc error message for --no-ancient-blocks (#10608) * adds error message for --no-ancient-blocks, closes #10261 * Apply suggestions from code review Co-Authored-By: seunlanlege <seunlanlege@gmail.com> * Constantinople HF on POA Core (#10606) * Constantinople HF on POA Core Plan Constantinople/St.Petersfork HF on POA Core network at block 8582254. Original PR in POA repository: https://github.com/poanetwork/poa-chain-spec/pull/110 * Remove extra empty line * evm: add some mulmod benches (#10600) * evm: add blockhash_mulmod bench * evm: use num-bigint for mod ops * Clique: zero-fill extradata when the supplied value is less than 32 bytes in length (#10605) * Update kovan.json to switch validator set to POA Consensus Contracts (#10628) * Fix publish docs (#10635) * Fix publish docs * this never should be forced, either way compiling previous versions will produce outdated docs * fix array, var was moved to the group project global variables list * Fix rinkeby petersburg fork (#10632)	2019-05-10 13:48:52 +02:00