bigint upgraded to version 3.0 (#5986)

* bigint upgraded to version 3.0

* fixed missing FromHex import in ethcore tests

* fixed missing FromHex import in rpc tests

ethkey/Cargo.toml

@@ -8,7 +8,7 @@ rand = "0.3.14"
 lazy_static = "0.2"
 tiny-keccak = "1.2"
 eth-secp256k1 = { git = "https://github.com/paritytech/rust-secp256k1" }
-rustc-serialize = "0.3"
+rustc-hex = "1.0"
 ethcore-bigint = { path = "../util/bigint" }
 rust-crypto = "0.2"
 byteorder = "1.0"

ethkey/cli/Cargo.toml

@@ -5,7 +5,7 @@ authors = ["Parity Technologies <admin@parity.io>"]
 
 [dependencies]
 ethkey = { path = "../" }
-rustc-serialize = "0.3"
+rustc-hex = "1.0"
 docopt = "0.7"
 
 [[bin]]

ethkey/cli/src/main.rs

@@ -15,13 +15,13 @@
 // along with Parity.  If not, see <http://www.gnu.org/licenses/>.
 
 extern crate docopt;
-extern crate rustc_serialize;
+extern crate rustc_hex;
 extern crate ethkey;
 
 use std::{env, fmt, process};
 use std::num::ParseIntError;
 use docopt::Docopt;
-use rustc_serialize::hex::{FromHex, FromHexError};
+use rustc_hex::{FromHex, FromHexError};
 use ethkey::{KeyPair, Random, Brain, Prefix, Error as EthkeyError, Generator, sign, verify_public, verify_address};
 
 pub const USAGE: &'static str = r#"

ethkey/src/keypair.rs

@@ -16,7 +16,7 @@
 
 use std::fmt;
 use secp256k1::key;
-use rustc_serialize::hex::ToHex;
+use rustc_hex::ToHex;
 use keccak::Keccak256;
 use super::{Secret, Public, Address, SECP256K1, Error};
 

ethkey/src/lib.rs

@@ -19,7 +19,7 @@ extern crate rand;
 extern crate lazy_static;
 extern crate tiny_keccak;
 extern crate secp256k1;
-extern crate rustc_serialize;
+extern crate rustc_hex;
 extern crate ethcore_bigint as bigint;
 extern crate crypto as rcrypto;
 extern crate byteorder;

ethkey/src/signature.rs

@@ -21,7 +21,7 @@ use std::str::FromStr;
 use std::hash::{Hash, Hasher};
 use secp256k1::{Message as SecpMessage, RecoverableSignature, RecoveryId, Error as SecpError};
 use secp256k1::key::{SecretKey, PublicKey};
-use rustc_serialize::hex::{ToHex, FromHex};
+use rustc_hex::{ToHex, FromHex};
 use bigint::hash::{H520, H256};
 use {Secret, Public, SECP256K1, Error, Message, public_to_address, Address};