fix compile warnings (#10993)

* fix warnings

* fix: failing build, use `spec` as dev-dependency

accounts/ethstore/src/accounts_dir/disk.rs

@@ -284,7 +284,7 @@ impl<T> KeyDirectory for DiskDirectory<T> where T: KeyFileManager {
 
 	fn path(&self) -> Option<&PathBuf> { Some(&self.path) }
 
-	fn as_vault_provider(&self) -> Option<&VaultKeyDirectoryProvider> {
+	fn as_vault_provider(&self) -> Option<&dyn VaultKeyDirectoryProvider> {
 		Some(self)
 	}
 
@@ -294,12 +294,12 @@ impl<T> KeyDirectory for DiskDirectory<T> where T: KeyFileManager {
 }
 
 impl<T> VaultKeyDirectoryProvider for DiskDirectory<T> where T: KeyFileManager {
-	fn create(&self, name: &str, key: VaultKey) -> Result<Box<VaultKeyDirectory>, Error> {
+	fn create(&self, name: &str, key: VaultKey) -> Result<Box<dyn VaultKeyDirectory>, Error> {
 		let vault_dir = VaultDiskDirectory::create(&self.path, name, key)?;
 		Ok(Box::new(vault_dir))
 	}
 
-	fn open(&self, name: &str, key: VaultKey) -> Result<Box<VaultKeyDirectory>, Error> {
+	fn open(&self, name: &str, key: VaultKey) -> Result<Box<dyn VaultKeyDirectory>, Error> {
 		let vault_dir = VaultDiskDirectory::at(&self.path, name, key)?;
 		Ok(Box::new(vault_dir))
 	}

accounts/ethstore/src/accounts_dir/mod.rs

@@ -57,7 +57,7 @@ pub trait KeyDirectory: Send + Sync {
 	/// Get directory filesystem path, if available
 	fn path(&self) -> Option<&PathBuf> { None }
 	/// Return vault provider, if available
-	fn as_vault_provider(&self) -> Option<&VaultKeyDirectoryProvider> { None }
+	fn as_vault_provider(&self) -> Option<&dyn VaultKeyDirectoryProvider> { None }
 	/// Unique representation of directory account collection
 	fn unique_repr(&self) -> Result<u64, Error>;
 }
@@ -65,9 +65,9 @@ pub trait KeyDirectory: Send + Sync {
 /// Vaults provider
 pub trait VaultKeyDirectoryProvider {
 	/// Create new vault with given key
-	fn create(&self, name: &str, key: VaultKey) -> Result<Box<VaultKeyDirectory>, Error>;
+	fn create(&self, name: &str, key: VaultKey) -> Result<Box<dyn VaultKeyDirectory>, Error>;
 	/// Open existing vault with given key
-	fn open(&self, name: &str, key: VaultKey) -> Result<Box<VaultKeyDirectory>, Error>;
+	fn open(&self, name: &str, key: VaultKey) -> Result<Box<dyn VaultKeyDirectory>, Error>;
 	/// List all vaults
 	fn list_vaults(&self) -> Result<Vec<String>, Error>;
 	/// Get vault meta
@@ -77,7 +77,7 @@ pub trait VaultKeyDirectoryProvider {
 /// Vault directory
 pub trait VaultKeyDirectory: KeyDirectory {
 	/// Cast to `KeyDirectory`
-	fn as_key_directory(&self) -> &KeyDirectory;
+	fn as_key_directory(&self) -> &dyn KeyDirectory;
 	/// Vault name
 	fn name(&self) -> &str;
 	/// Get vault key

accounts/ethstore/src/accounts_dir/vault.rs

@@ -119,7 +119,7 @@ impl VaultDiskDirectory {
 }
 
 impl VaultKeyDirectory for VaultDiskDirectory {
-	fn as_key_directory(&self) -> &KeyDirectory {
+	fn as_key_directory(&self) -> &dyn KeyDirectory {
 		self
 	}
 

accounts/ethstore/src/ethstore.rs

@@ -36,12 +36,12 @@ pub struct EthStore {
 
 impl EthStore {
 	/// Open a new accounts store with given key directory backend.
-	pub fn open(directory: Box<KeyDirectory>) -> Result<Self, Error> {
+	pub fn open(directory: Box<dyn KeyDirectory>) -> Result<Self, Error> {
 		Self::open_with_iterations(directory, KEY_ITERATIONS as u32)
 	}
 
 	/// Open a new account store with given key directory backend and custom number of iterations.
-	pub fn open_with_iterations(directory: Box<KeyDirectory>, iterations: u32) -> Result<Self, Error> {
+	pub fn open_with_iterations(directory: Box<dyn KeyDirectory>, iterations: u32) -> Result<Self, Error> {
 		Ok(EthStore {
 			store: EthMultiStore::open_with_iterations(directory, iterations)?,
 		})
@@ -184,7 +184,7 @@ impl SecretStore for EthStore {
 		Ok(account.check_password(password))
 	}
 
-	fn copy_account(&self, new_store: &SimpleSecretStore, new_vault: SecretVaultRef, account: &StoreAccountRef, password: &Password, new_password: &Password) -> Result<(), Error> {
+	fn copy_account(&self, new_store: &dyn SimpleSecretStore, new_vault: SecretVaultRef, account: &StoreAccountRef, password: &Password, new_password: &Password) -> Result<(), Error> {
 		let account = self.get(account)?;
 		let secret = account.crypto.secret(password)?;
 		new_store.insert_account(new_vault, secret, new_password)?;
@@ -256,11 +256,11 @@ impl SecretStore for EthStore {
 
 /// Similar to `EthStore` but may store many accounts (with different passwords) for the same `Address`
 pub struct EthMultiStore {
-	dir: Box<KeyDirectory>,
+	dir: Box<dyn KeyDirectory>,
 	iterations: u32,
 	// order lock: cache, then vaults
 	cache: RwLock<BTreeMap<StoreAccountRef, Vec<SafeAccount>>>,
-	vaults: Mutex<HashMap<String, Box<VaultKeyDirectory>>>,
+	vaults: Mutex<HashMap<String, Box<dyn VaultKeyDirectory>>>,
 	timestamp: Mutex<Timestamp>,
 }
 
@@ -272,12 +272,12 @@ struct Timestamp {
 
 impl EthMultiStore {
 	/// Open new multi-accounts store with given key directory backend.
-	pub fn open(directory: Box<KeyDirectory>) -> Result<Self, Error> {
+	pub fn open(directory: Box<dyn KeyDirectory>) -> Result<Self, Error> {
 		Self::open_with_iterations(directory, KEY_ITERATIONS as u32)
 	}
 
 	/// Open new multi-accounts store with given key directory backend and custom number of iterations for new keys.
-	pub fn open_with_iterations(directory: Box<KeyDirectory>, iterations: u32) -> Result<Self, Error> {
+	pub fn open_with_iterations(directory: Box<dyn KeyDirectory>, iterations: u32) -> Result<Self, Error> {
 		let store = EthMultiStore {
 			dir: directory,
 			vaults: Mutex::new(HashMap::new()),

accounts/ethstore/src/import.rs

@@ -24,7 +24,7 @@ use dir;
 use Error;
 
 /// Import an account from a file.
-pub fn import_account(path: &Path, dst: &KeyDirectory) -> Result<Address, Error> {
+pub fn import_account(path: &Path, dst: &dyn KeyDirectory) -> Result<Address, Error> {
 	let key_manager = DiskKeyFileManager::default();
 	let existing_accounts = dst.load()?.into_iter().map(|a| a.address).collect::<HashSet<_>>();
 	let filename = path.file_name().and_then(|n| n.to_str()).map(|f| f.to_owned());
@@ -40,7 +40,7 @@ pub fn import_account(path: &Path, dst: &KeyDirectory) -> Result<Address, Error>
 }
 
 /// Import all accounts from one directory to the other.
-pub fn import_accounts(src: &KeyDirectory, dst: &KeyDirectory) -> Result<Vec<Address>, Error> {
+pub fn import_accounts(src: &dyn KeyDirectory, dst: &dyn KeyDirectory) -> Result<Vec<Address>, Error> {
 	let accounts = src.load()?;
 	let existing_accounts = dst.load()?.into_iter()
 		.map(|a| a.address)
@@ -64,7 +64,7 @@ pub fn read_geth_accounts(testnet: bool) -> Vec<Address> {
 }
 
 /// Import specific `desired` accounts from the Geth keystore into `dst`.
-pub fn import_geth_accounts(dst: &KeyDirectory, desired: HashSet<Address>, testnet: bool) -> Result<Vec<Address>, Error> {
+pub fn import_geth_accounts(dst: &dyn KeyDirectory, desired: HashSet<Address>, testnet: bool) -> Result<Vec<Address>, Error> {
 	let src = RootDiskDirectory::at(dir::geth(testnet));
 	let accounts = src.load()?;
 	let existing_accounts = dst.load()?.into_iter().map(|a| a.address).collect::<HashSet<_>>();

accounts/ethstore/src/secret_store.rs

@@ -118,7 +118,7 @@ pub trait SecretStore: SimpleSecretStore {
 	/// Imports existing JSON wallet
 	fn import_wallet(&self, vault: SecretVaultRef, json: &[u8], password: &Password, gen_id: bool) -> Result<StoreAccountRef, Error>;
 	/// Copies account between stores and vaults.
-	fn copy_account(&self, new_store: &SimpleSecretStore, new_vault: SecretVaultRef, account: &StoreAccountRef, password: &Password, new_password: &Password) -> Result<(), Error>;
+	fn copy_account(&self, new_store: &dyn SimpleSecretStore, new_vault: SecretVaultRef, account: &StoreAccountRef, password: &Password, new_password: &Password) -> Result<(), Error>;
 	/// Checks if password matches given account.
 	fn test_password(&self, account: &StoreAccountRef, password: &Password) -> Result<bool, Error>;
 

accounts/src/lib.rs

@@ -64,7 +64,7 @@ pub struct AccountProvider {
 	/// Address book.
 	address_book: RwLock<AddressBook>,
 	/// Accounts on disk
-	sstore: Box<SecretStore>,
+	sstore: Box<dyn SecretStore>,
 	/// Accounts unlocked with rolling tokens
 	transient_sstore: EthMultiStore,
 	/// When unlocking account permanently we additionally keep a raw secret in memory
@@ -80,7 +80,7 @@ fn transient_sstore() -> EthMultiStore {
 
 impl AccountProvider {
 	/// Creates new account provider.
-	pub fn new(sstore: Box<SecretStore>, settings: AccountProviderSettings) -> Self {
+	pub fn new(sstore: Box<dyn SecretStore>, settings: AccountProviderSettings) -> Self {
 		if let Ok(accounts) = sstore.accounts() {
 			for account in accounts.into_iter().filter(|a| settings.blacklisted_accounts.contains(&a.address)) {
 				warn!("Local Account {} has a blacklisted (known to be weak) address and will be ignored",

cli-signer/rpc-client/src/lib.rs

@@ -36,7 +36,7 @@ extern crate log;
 extern crate matches;
 
 /// Boxed future response.
-pub type BoxFuture<T, E> = Box<futures::Future<Item=T, Error=E> + Send>;
+pub type BoxFuture<T, E> = Box<dyn futures::Future<Item=T, Error=E> + Send>;
 
 #[cfg(test)]
 mod tests {

ethcore/private-tx/src/error.rs

@@ -138,7 +138,7 @@ pub enum Error {
 }
 
 impl error::Error for Error {
-	fn source(&self) -> Option<&(error::Error + 'static)> {
+	fn source(&self) -> Option<&(dyn error::Error + 'static)> {
 		match self {
 			Error::Io(e) => Some(e),
 			Error::Decoder(e) => Some(e),

ethcore/private-tx/src/lib.rs

@@ -63,7 +63,6 @@ extern crate transaction_pool as txpool;
 extern crate url;
 #[macro_use]
 extern crate log as ethlog;
-#[macro_use]
 extern crate ethabi_derive;
 #[macro_use]
 extern crate ethabi_contract;
@@ -205,17 +204,17 @@ impl Signer for KeyPairSigner {
 
 /// Manager of private transactions
 pub struct Provider {
-	encryptor: Box<Encryptor>,
+	encryptor: Box<dyn Encryptor>,
 	validator_accounts: HashSet<Address>,
 	signer_account: Option<Address>,
-	notify: RwLock<Vec<Weak<ChainNotify>>>,
+	notify: RwLock<Vec<Weak<dyn ChainNotify>>>,
 	transactions_for_signing: RwLock<SigningStore>,
 	transactions_for_verification: VerificationStore,
 	client: Arc<Client>,
 	miner: Arc<Miner>,
-	accounts: Arc<Signer>,
+	accounts: Arc<dyn Signer>,
 	channel: IoChannel<ClientIoMessage>,
-	keys_provider: Arc<KeyProvider>,
+	keys_provider: Arc<dyn KeyProvider>,
 	logging: Option<Logging>,
 	use_offchain_storage: bool,
 	state_storage: PrivateStateStorage,
@@ -234,12 +233,12 @@ impl Provider {
 	pub fn new(
 		client: Arc<Client>,
 		miner: Arc<Miner>,
-		accounts: Arc<Signer>,
+		accounts: Arc<dyn Signer>,
-		encryptor: Box<Encryptor>,
+		encryptor: Box<dyn Encryptor>,
 		config: ProviderConfig,
 		channel: IoChannel<ClientIoMessage>,
-		keys_provider: Arc<KeyProvider>,
+		keys_provider: Arc<dyn KeyProvider>,
-		db: Arc<KeyValueDB>,
+		db: Arc<dyn KeyValueDB>,
 	) -> Self {
 		keys_provider.update_acl_contract();
 		Provider {
@@ -268,11 +267,11 @@ impl Provider {
 	// TODO [ToDr] Don't use `ChainNotify` here!
 	// Better to create a separate notification type for this.
 	/// Adds an actor to be notified on certain events
-	pub fn add_notify(&self, target: Arc<ChainNotify>) {
+	pub fn add_notify(&self, target: Arc<dyn ChainNotify>) {
 		self.notify.write().push(Arc::downgrade(&target));
 	}
 
-	fn notify<F>(&self, f: F) where F: Fn(&ChainNotify) {
+	fn notify<F>(&self, f: F) where F: Fn(&dyn ChainNotify) {
 		for np in self.notify.read().iter() {
 			if let Some(n) = np.upgrade() {
 				f(&*n);

ethcore/private-tx/src/log.rs

@@ -186,13 +186,13 @@ impl LogsSerializer for FileLogsSerializer {
 /// Private transactions logging
 pub struct Logging {
 	logs: RwLock<HashMap<H256, TransactionLog>>,
-	logs_serializer: Arc<LogsSerializer>,
+	logs_serializer: Arc<dyn LogsSerializer>,
 	mono_time: MonoTime,
 }
 
 impl Logging {
 	/// Creates the logging object
-	pub fn new(logs_serializer: Arc<LogsSerializer>) -> Self {
+	pub fn new(logs_serializer: Arc<dyn LogsSerializer>) -> Self {
 		let mut logging = Logging {
 			logs: RwLock::new(HashMap::new()),
 			logs_serializer,

ethcore/private-tx/src/private_state_db.rs

@@ -25,12 +25,12 @@ use error::Error;
 
 /// Wrapper around local db with private state for sync purposes
 pub struct PrivateStateDB {
-	db: Arc<KeyValueDB>,
+	db: Arc<dyn KeyValueDB>,
 }
 
 impl PrivateStateDB {
 	/// Constructs the object
-	pub fn new(db: Arc<KeyValueDB>) -> Self {
+	pub fn new(db: Arc<dyn KeyValueDB>) -> Self {
 		PrivateStateDB {
 			db,
 		}
@@ -59,4 +59,4 @@ impl PrivateStateDB {
 	pub fn state_hash(&self, state: &Bytes) -> Result<H256, Error> {
 		Ok(KeccakHasher::hash(state))
 	}
-}
+}

ethcore/private-tx/src/state_store.rs

@@ -57,7 +57,7 @@ pub struct PrivateStateStorage {
 
 impl PrivateStateStorage {
 	/// Constructs the object
-	pub fn new(db: Arc<KeyValueDB>) -> Self {
+	pub fn new(db: Arc<dyn KeyValueDB>) -> Self {
 		PrivateStateStorage {
 			private_state_db: Arc::new(PrivateStateDB::new(db)),
 			requests: RwLock::new(Vec::new()),
@@ -162,4 +162,4 @@ impl PrivateStateStorage {
 			!delete_request
 		});
 	}
-}
+}

ethcore/service/src/service.rs

@@ -94,7 +94,7 @@ pub struct ClientService {
 	client: Arc<Client>,
 	snapshot: Arc<SnapshotService>,
 	private_tx: Arc<PrivateTxService>,
-	database: Arc<BlockChainDB>,
+	database: Arc<dyn BlockChainDB>,
 }
 
 impl ClientService {
@@ -102,13 +102,13 @@ impl ClientService {
 	pub fn start(
 		config: ClientConfig,
 		spec: &Spec,
-		blockchain_db: Arc<BlockChainDB>,
+		blockchain_db: Arc<dyn BlockChainDB>,
 		snapshot_path: &Path,
-		restoration_db_handler: Box<BlockChainDBHandler>,
+		restoration_db_handler: Box<dyn BlockChainDBHandler>,
 		_ipc_path: &Path,
 		miner: Arc<Miner>,
-		signer: Arc<Signer>,
+		signer: Arc<dyn Signer>,
-		encryptor: Box<ethcore_private_tx::Encryptor>,
+		encryptor: Box<dyn ethcore_private_tx::Encryptor>,
 		private_tx_conf: ethcore_private_tx::ProviderConfig,
 		private_encryptor_conf: ethcore_private_tx::EncryptorConfig,
 		) -> Result<ClientService, EthcoreError>
@@ -173,7 +173,7 @@ impl ClientService {
 	}
 
 	/// Get general IO interface
-	pub fn register_io_handler(&self, handler: Arc<IoHandler<ClientIoMessage> + Send>) -> Result<(), IoError> {
+	pub fn register_io_handler(&self, handler: Arc<dyn IoHandler<ClientIoMessage> + Send>) -> Result<(), IoError> {
 		self.io_service.register_handler(handler)
 	}
 
@@ -198,12 +198,12 @@ impl ClientService {
 	}
 
 	/// Set the actor to be notified on certain chain events
-	pub fn add_notify(&self, notify: Arc<ChainNotify>) {
+	pub fn add_notify(&self, notify: Arc<dyn ChainNotify>) {
 		self.client.add_notify(notify);
 	}
 
 	/// Get a handle to the database.
-	pub fn db(&self) -> Arc<BlockChainDB> { self.database.clone() }
+	pub fn db(&self) -> Arc<dyn BlockChainDB> { self.database.clone() }
 
 	/// Shutdown the Client Service
 	pub fn shutdown(&self) {

ethcore/sync/src/chain/handler.rs

@@ -743,7 +743,7 @@ impl SyncHandler {
 		Ok(())
 	}
 
-	fn on_private_state_data(sync: &mut ChainSync, io: &mut SyncIo, peer_id: PeerId, r: &Rlp) -> Result<(), DownloaderImportError> {
+	fn on_private_state_data(sync: &mut ChainSync, io: &mut dyn SyncIo, peer_id: PeerId, r: &Rlp) -> Result<(), DownloaderImportError> {
 		if !sync.peers.get(&peer_id).map_or(false, |p| p.can_sync()) {
 			trace!(target: "sync", "{} Ignoring packet from unconfirmed/unknown peer", peer_id);
 			return Ok(());

ethcore/sync/src/chain/mod.rs

@@ -1382,7 +1382,7 @@ impl ChainSync {
 	}
 
 	/// Request private state from peers
-	pub fn request_private_state(&mut self, io: &mut SyncIo, hash: &H256) {
+	pub fn request_private_state(&mut self, io: &mut dyn SyncIo, hash: &H256) {
 		let private_state_peers = self.get_private_state_peers();
 		if private_state_peers.is_empty() {
 			error!(target: "privatetx", "Cannot request private state, no peers with private tx enabled available");

ethcore/sync/src/chain/requester.rs

@@ -100,7 +100,7 @@ impl SyncRequester {
 		SyncRequester::send_request(sync, io, peer_id, PeerAsking::SnapshotManifest, GetSnapshotManifestPacket, rlp.out());
 	}
 
-	pub fn request_private_state(sync: &mut ChainSync, io: &mut SyncIo, peer_id: PeerId, hash: &H256) {
+	pub fn request_private_state(sync: &mut ChainSync, io: &mut dyn SyncIo, peer_id: PeerId, hash: &H256) {
 		trace!(target: "privatetx", "{} <- GetPrivateStatePacket", peer_id);
 		let mut rlp = RlpStream::new_list(1);
 		rlp.append(hash);

ethcore/sync/src/chain/supplier.rs

@@ -356,7 +356,7 @@ impl SyncSupplier {
 	}
 
 	/// Respond to GetPrivateStatePacket
-	fn return_private_state(io: &SyncIo, r: &Rlp, peer_id: PeerId) -> RlpResponseResult {
+	fn return_private_state(io: &dyn SyncIo, r: &Rlp, peer_id: PeerId) -> RlpResponseResult {
 		let hash: H256 = r.val_at(0)?;
 		trace!(target: "privatetx", "{} -> GetPrivateStatePacket {:?}", peer_id, hash);
 		io.private_state().map_or(Ok(None), |db| {

miner/local-store/src/lib.rs

@@ -107,11 +107,11 @@ pub trait NodeInfo: Send + Sync {
 
 /// Create a new local data store, given a database, a column to write to, and a node.
 /// Attempts to read data out of the store, and move it into the node.
-pub fn create<T: NodeInfo>(db: Arc<KeyValueDB>, col: Option<u32>, node: T) -> LocalDataStore<T> {
+pub fn create<T: NodeInfo>(db: Arc<dyn KeyValueDB>, col: Option<u32>, node: T) -> LocalDataStore<T> {
 	LocalDataStore {
-		db: db,
+		db,
-		col: col,
+		col,
-		node: node,
+		node,
 	}
 }
 
@@ -120,7 +120,7 @@ pub fn create<T: NodeInfo>(db: Arc<KeyValueDB>, col: Option<u32>, node: T) -> Lo
 /// In specific, this will be used to store things like unpropagated local transactions
 /// and the node security level.
 pub struct LocalDataStore<T: NodeInfo> {
-	db: Arc<KeyValueDB>,
+	db: Arc<dyn KeyValueDB>,
 	col: Option<u32>,
 	node: T,
 }

miner/stratum/src/lib.rs

@@ -70,7 +70,7 @@ pub struct Stratum {
 impl Stratum {
 	pub fn start(
 		addr: &SocketAddr,
-		dispatcher: Arc<JobDispatcher>,
+		dispatcher: Arc<dyn JobDispatcher>,
 		secret: Option<H256>,
 	) -> Result<Arc<Stratum>, Error> {
 
@@ -128,7 +128,7 @@ struct StratumImpl {
 	/// List of workers supposed to receive job update
 	job_que: RwLock<HashSet<SocketAddr>>,
 	/// Payload manager
-	dispatcher: Arc<JobDispatcher>,
+	dispatcher: Arc<dyn JobDispatcher>,
 	/// Authorized workers (socket - worker_id)
 	workers: Arc<RwLock<HashMap<SocketAddr, String>>>,
 	/// Secret if any

parity/account_utils.rs

@@ -199,14 +199,14 @@ mod accounts {
 		}
 	}
 
-	pub fn private_tx_signer(accounts: Arc<AccountProvider>, passwords: &[Password]) -> Result<Arc<::ethcore_private_tx::Signer>, String> {
+	pub fn private_tx_signer(accounts: Arc<AccountProvider>, passwords: &[Password]) -> Result<Arc<dyn (ethcore_private_tx::Signer)>, String> {
 		Ok(Arc::new(self::private_tx::AccountSigner {
 			accounts,
 			passwords: passwords.to_vec(),
 		}))
 	}
 
-	pub fn accounts_list(account_provider: Arc<AccountProvider>) -> Arc<Fn() -> Vec<Address> + Send + Sync> {
+	pub fn accounts_list(account_provider: Arc<AccountProvider>) -> Arc<dyn Fn() -> Vec<Address> + Send + Sync> {
 		Arc::new(move || account_provider.accounts().unwrap_or_default())
 	}
 

parity/blockchain.rs

@@ -244,7 +244,7 @@ fn execute_import_light(cmd: ImportBlockchain) -> Result<(), String> {
 
 	let client = service.client();
 
-	let mut instream: Box<io::Read> = match cmd.file_path {
+	let mut instream: Box<dyn io::Read> = match cmd.file_path {
 		Some(f) => Box::new(fs::File::open(&f).map_err(|_| format!("Cannot open given file: {}", f))?),
 		None => Box::new(io::stdin()),
 	};
@@ -412,7 +412,7 @@ fn execute_import(cmd: ImportBlockchain) -> Result<(), String> {
 
 	let client = service.client();
 
-	let mut instream: Box<io::Read> = match cmd.file_path {
+	let mut instream: Box<dyn io::Read> = match cmd.file_path {
 		Some(f) => Box::new(fs::File::open(&f).map_err(|_| format!("Cannot open given file: {}", f))?),
 		None => Box::new(io::stdin()),
 	};
@@ -621,7 +621,7 @@ fn execute_export(cmd: ExportBlockchain) -> Result<(), String> {
 
 	let client = service.client();
 
-	let mut out: Box<io::Write> = match cmd.file_path {
+	let mut out: Box<dyn io::Write> = match cmd.file_path {
 		Some(f) => Box::new(fs::File::create(&f).map_err(|_| format!("Cannot write to file given: {}", f))?),
 		None => Box::new(io::stdout()),
 	};
@@ -665,7 +665,7 @@ fn execute_export_state(cmd: ExportState) -> Result<(), String> {
 
 	let client = service.client();
 
-	let mut out: Box<io::Write> = match cmd.file_path {
+	let mut out: Box<dyn io::Write> = match cmd.file_path {
 		Some(f) => Box::new(fs::File::create(&f).map_err(|_| format!("Cannot write to file given: {}", f))?),
 		None => Box::new(io::stdout()),
 	};

parity/db/rocksdb/mod.rs

@@ -37,13 +37,13 @@ mod helpers;
 pub use self::migration::migrate;
 
 struct AppDB {
-	key_value: Arc<KeyValueDB>,
+	key_value: Arc<dyn KeyValueDB>,
 	blooms: blooms_db::Database,
 	trace_blooms: blooms_db::Database,
 }
 
 impl BlockChainDB for AppDB {
-	fn key_value(&self) -> &Arc<KeyValueDB> {
+	fn key_value(&self) -> &Arc<dyn KeyValueDB> {
 		&self.key_value
 	}
 
@@ -58,7 +58,7 @@ impl BlockChainDB for AppDB {
 
 /// Open a secret store DB using the given secret store data path. The DB path is one level beneath the data path.
 #[cfg(feature = "secretstore")]
-pub fn open_secretstore_db(data_path: &str) -> Result<Arc<KeyValueDB>, String> {
+pub fn open_secretstore_db(data_path: &str) -> Result<Arc<dyn KeyValueDB>, String> {
 	use std::path::PathBuf;
 
 	let mut db_path = PathBuf::from(data_path);
@@ -68,7 +68,7 @@ pub fn open_secretstore_db(data_path: &str) -> Result<Arc<KeyValueDB>, String> {
 }
 
 /// Create a restoration db handler using the config generated by `client_path` and `client_config`.
-pub fn restoration_db_handler(client_path: &Path, client_config: &ClientConfig) -> Box<BlockChainDBHandler> {
+pub fn restoration_db_handler(client_path: &Path, client_config: &ClientConfig) -> Box<dyn BlockChainDBHandler> {
 	let client_db_config = helpers::client_db_config(client_path, client_config);
 
 	struct RestorationDBHandler {
@@ -76,7 +76,7 @@ pub fn restoration_db_handler(client_path: &Path, client_config: &ClientConfig)
 	}
 
 	impl BlockChainDBHandler for RestorationDBHandler {
-		fn open(&self, db_path: &Path) -> io::Result<Arc<BlockChainDB>> {
+		fn open(&self, db_path: &Path) -> io::Result<Arc<dyn BlockChainDB>> {
 			open_database(&db_path.to_string_lossy(), &self.config)
 		}
 	}
@@ -87,7 +87,11 @@ pub fn restoration_db_handler(client_path: &Path, client_config: &ClientConfig)
 }
 
 /// Open a new main DB.
-pub fn open_db(client_path: &str, cache_config: &CacheConfig, compaction: &DatabaseCompactionProfile) -> io::Result<Arc<BlockChainDB>> {
+pub fn open_db(
+	client_path: &str,
+	cache_config: &CacheConfig,
+	compaction: &DatabaseCompactionProfile
+) -> io::Result<Arc<dyn BlockChainDB>> {
 	let path = Path::new(client_path);
 
 	let db_config = DatabaseConfig {
@@ -99,7 +103,7 @@ pub fn open_db(client_path: &str, cache_config: &CacheConfig, compaction: &Datab
 	open_database(client_path, &db_config)
 }
 
-pub fn open_database(client_path: &str, config: &DatabaseConfig) -> io::Result<Arc<BlockChainDB>> {
+pub fn open_database(client_path: &str, config: &DatabaseConfig) -> io::Result<Arc<dyn BlockChainDB>> {
 	let path = Path::new(client_path);
 
 	let blooms_path = path.join("blooms");

parity/informant.rs

@@ -124,8 +124,8 @@ pub trait InformantData: Send + Sync {
 /// Informant data for a full node.
 pub struct FullNodeInformantData {
 	pub client: Arc<Client>,
-	pub sync: Option<Arc<SyncProvider>>,
+	pub sync: Option<Arc<dyn SyncProvider>>,
-	pub net: Option<Arc<ManageNetwork>>,
+	pub net: Option<Arc<dyn ManageNetwork>>,
 }
 
 impl InformantData for FullNodeInformantData {
@@ -180,7 +180,7 @@ impl InformantData for FullNodeInformantData {
 
 /// Informant data for a light node -- note that the network is required.
 pub struct LightNodeInformantData {
-	pub client: Arc<LightChainClient>,
+	pub client: Arc<dyn LightChainClient>,
 	pub sync: Arc<LightSync>,
 	pub cache: Arc<Mutex<LightDataCache>>,
 }

parity/ipfs.rs

@@ -40,7 +40,7 @@ impl Default for Configuration {
 	}
 }
 
-pub fn start_server(conf: Configuration, client: Arc<BlockChainClient>) -> Result<Option<Listening>, ServerError> {
+pub fn start_server(conf: Configuration, client: Arc<dyn BlockChainClient>) -> Result<Option<Listening>, ServerError> {
 	if !conf.enabled {
 		return Ok(None);
 	}

parity/light_helpers/epoch_fetch.rs

@@ -35,7 +35,7 @@ use ethereum_types::H256;
 
 const ALL_VALID_BACKREFS: &str = "no back-references, therefore all back-references valid; qed";
 
-type BoxFuture<T, E> = Box<Future<Item = T, Error = E>>;
+type BoxFuture<T, E> = Box<dyn Future<Item = T, Error = E>>;
 
 /// Allows on-demand fetch of data useful for the light client.
 pub struct EpochFetch {
@@ -83,7 +83,7 @@ impl ChainDataFetcher for EpochFetch {
 	}
 
 	/// Fetch epoch transition proof at given header.
-	fn epoch_transition(&self, hash: H256, engine: Arc<Engine>, checker: Arc<StateDependentProof>)
+	fn epoch_transition(&self, hash: H256, engine: Arc<dyn Engine>, checker: Arc<dyn StateDependentProof>)
 		-> Self::Transition
 	{
 		self.request(request::Signal {

parity/modules.rs

@@ -28,9 +28,9 @@ pub use ethcore::client::ChainNotify;
 use ethcore_logger::Config as LogConfig;
 
 pub type SyncModules = (
-	Arc<SyncProvider>,
+	Arc<dyn SyncProvider>,
-	Arc<ManageNetwork>,
+	Arc<dyn ManageNetwork>,
-	Arc<ChainNotify>,
+	Arc<dyn ChainNotify>,
 	mpsc::Sender<sync::PriorityTask>,
 );
 
@@ -38,13 +38,13 @@ pub fn sync(
 	config: SyncConfig,
 	executor: Executor,
 	network_config: NetworkConfiguration,
-	chain: Arc<BlockChainClient>,
+	chain: Arc<dyn BlockChainClient>,
-	snapshot_service: Arc<SnapshotService>,
+	snapshot_service: Arc<dyn SnapshotService>,
-	private_tx_handler: Option<Arc<PrivateTxHandler>>,
+	private_tx_handler: Option<Arc<dyn PrivateTxHandler>>,
 	private_state: Option<Arc<PrivateStateDB>>,
-	provider: Arc<Provider>,
+	provider: Arc<dyn Provider>,
 	_log_settings: &LogConfig,
-	connection_filter: Option<Arc<ConnectionFilter>>,
+	connection_filter: Option<Arc<dyn ConnectionFilter>>,
 ) -> Result<SyncModules, sync::Error> {
 	let eth_sync = EthSync::new(Params {
 		config,
@@ -59,9 +59,9 @@ pub fn sync(
 	connection_filter)?;
 
 	Ok((
-		eth_sync.clone() as Arc<SyncProvider>,
+		eth_sync.clone() as Arc<dyn SyncProvider>,
-		eth_sync.clone() as Arc<ManageNetwork>,
+		eth_sync.clone() as Arc<dyn ManageNetwork>,
-		eth_sync.clone() as Arc<ChainNotify>,
+		eth_sync.clone() as Arc<dyn ChainNotify>,
 		eth_sync.priority_tasks()
 	))
 }

parity/rpc_apis.rs

@@ -235,16 +235,16 @@ pub trait Dependencies {
 pub struct FullDependencies {
 	pub signer_service: Arc<SignerService>,
 	pub client: Arc<Client>,
-	pub snapshot: Arc<SnapshotService>,
+	pub snapshot: Arc<dyn SnapshotService>,
-	pub sync: Arc<SyncProvider>,
+	pub sync: Arc<dyn SyncProvider>,
-	pub net: Arc<ManageNetwork>,
+	pub net: Arc<dyn ManageNetwork>,
 	pub accounts: Arc<AccountProvider>,
 	pub private_tx_service: Option<Arc<PrivateTxService>>,
 	pub miner: Arc<Miner>,
 	pub external_miner: Arc<ExternalMiner>,
 	pub logger: Arc<RotatingLogger>,
 	pub settings: Arc<NetworkSettings>,
-	pub net_service: Arc<ManageNetwork>,
+	pub net_service: Arc<dyn ManageNetwork>,
 	pub updater: Arc<Updater>,
 	pub geth_compatibility: bool,
 	pub experimental_rpcs: bool,
@@ -485,7 +485,7 @@ pub struct LightDependencies<T> {
 	pub signer_service: Arc<SignerService>,
 	pub client: Arc<T>,
 	pub sync: Arc<LightSync>,
-	pub net: Arc<ManageNetwork>,
+	pub net: Arc<dyn ManageNetwork>,
 	pub accounts: Arc<AccountProvider>,
 	pub logger: Arc<RotatingLogger>,
 	pub settings: Arc<NetworkSettings>,

parity/run.rs

@@ -583,7 +583,7 @@ fn execute_impl<Cr, Rr>(cmd: RunCmd, logger: Arc<RotatingLogger>, on_client_rq:
 	// take handle to private transactions service
 	let private_tx_service = service.private_tx_service();
 	let private_tx_provider = private_tx_service.provider();
-	let connection_filter = connection_filter_address.map(|a| Arc::new(NodeFilter::new(Arc::downgrade(&client) as Weak<BlockChainClient>, a)));
+	let connection_filter = connection_filter_address.map(|a| Arc::new(NodeFilter::new(Arc::downgrade(&client) as Weak<dyn BlockChainClient>, a)));
 	let snapshot_service = service.snapshot_service();
 	if let Some(filter) = connection_filter.clone() {
 		service.add_notify(filter.clone());
@@ -636,7 +636,7 @@ fn execute_impl<Cr, Rr>(cmd: RunCmd, logger: Arc<RotatingLogger>, on_client_rq:
 	}
 
 	let (private_tx_sync, private_state) = match cmd.private_tx_enabled {
-		true => (Some(private_tx_service.clone() as Arc<PrivateTxHandler>), Some(private_tx_provider.private_state_db())),
+		true => (Some(private_tx_service.clone() as Arc<dyn PrivateTxHandler>), Some(private_tx_provider.private_state_db())),
 		false => (None, None),
 	};
 
@@ -651,7 +651,7 @@ fn execute_impl<Cr, Rr>(cmd: RunCmd, logger: Arc<RotatingLogger>, on_client_rq:
 		private_state,
 		client.clone(),
 		&cmd.logger_config,
-		connection_filter.clone().map(|f| f as Arc<::sync::ConnectionFilter + 'static>),
+		connection_filter.clone().map(|f| f as Arc<dyn sync::ConnectionFilter + 'static>),
 	).map_err(|e| format!("Sync error: {}", e))?;
 
 	service.add_notify(chain_notify.clone());
@@ -706,7 +706,7 @@ fn execute_impl<Cr, Rr>(cmd: RunCmd, logger: Arc<RotatingLogger>, on_client_rq:
 	// the updater service
 	let updater_fetch = fetch.clone();
 	let updater = Updater::new(
-		&Arc::downgrade(&(service.client() as Arc<BlockChainClient>)),
+		&Arc::downgrade(&(service.client() as Arc<dyn BlockChainClient>)),
 		&Arc::downgrade(&sync_provider),
 		update_policy,
 		hash_fetch::Client::with_fetch(contract_client.clone(), updater_fetch, runtime.executor())
@@ -843,14 +843,14 @@ enum RunningClientInner {
 		rpc: jsonrpc_core::MetaIoHandler<Metadata, informant::Middleware<rpc_apis::LightClientNotifier>>,
 		informant: Arc<Informant<LightNodeInformantData>>,
 		client: Arc<LightClient>,
-		keep_alive: Box<Any>,
+		keep_alive: Box<dyn Any>,
 	},
 	Full {
 		rpc: jsonrpc_core::MetaIoHandler<Metadata, informant::Middleware<informant::ClientNotifier>>,
 		informant: Arc<Informant<FullNodeInformantData>>,
 		client: Arc<Client>,
 		client_service: Arc<ClientService>,
-		keep_alive: Box<Any>,
+		keep_alive: Box<dyn Any>,
 	},
 }
 

parity/secretstore.rs

@@ -93,7 +93,7 @@ pub struct Dependencies<'a> {
 	/// Blockchain client.
 	pub client: Arc<Client>,
 	/// Sync provider.
-	pub sync: Arc<SyncProvider>,
+	pub sync: Arc<dyn SyncProvider>,
 	/// Miner service.
 	pub miner: Arc<Miner>,
 	/// Account provider.

rpc/Cargo.toml

@@ -64,7 +64,6 @@ parity-updater = { path = "../updater" }
 parity-version = { path = "../util/version" }
 rlp = "0.4.0"
 account-state = { path = "../ethcore/account-state" }
-spec = { path = "../ethcore/spec" }
 stats = { path = "../util/stats" }
 trace = { path = "../ethcore/trace" }
 vm = { path = "../ethcore/vm" }
@@ -77,6 +76,7 @@ ethcore-io = { path = "../util/io" }
 ethcore-network = { path = "../util/network" }
 fake-fetch = { path = "../util/fake-fetch" }
 macros = { path = "../util/macros" }
+spec = { path = "../ethcore/spec" }
 pretty_assertions = "0.1"
 transaction-pool = "2.0"
 

rpc/src/lib.rs

@@ -85,7 +85,7 @@ extern crate parity_version as version;
 extern crate eip_712;
 extern crate rlp;
 extern crate account_state;
-extern crate spec;
+
 extern crate stats;
 extern crate tempdir;
 extern crate trace;
@@ -127,6 +127,9 @@ extern crate fake_fetch;
 #[cfg(test)]
 extern crate ethcore_io as io;
 
+#[cfg(test)]
+extern crate spec;
+
 pub extern crate jsonrpc_ws_server as ws;
 
 mod authcodes;

rpc/src/v1/helpers/deprecated.rs

@@ -38,7 +38,7 @@ const PRINT_INTERVAL: Duration = Duration::from_secs(60);
 pub struct DeprecationNotice<T = fn() -> Instant> {
 	now: T,
 	next_warning_at: RwLock<HashMap<String, Instant>>,
-	printer: Box<Fn(MethodName, Option<&str>) + Send + Sync>,
+	printer: Box<dyn Fn(MethodName, Option<&str>) + Send + Sync>,
 }
 
 impl Default for DeprecationNotice {

rpc/src/v1/helpers/dispatch/full.rs

@@ -118,7 +118,7 @@ impl<C: miner::BlockChainClient + BlockChainClient, M: MinerService> Dispatcher
 	fn sign<P>(
 		&self,
 		filled: FilledTransactionRequest,
-		signer: &Arc<Accounts>,
+		signer: &Arc<dyn Accounts>,
 		password: SignWith,
 		post_sign: P,
 	) -> BoxFuture<P::Item>

rpc/src/v1/helpers/dispatch/light.rs

@@ -45,7 +45,7 @@ where
 	/// Sync service.
 	pub sync: Arc<S>,
 	/// Header chain client.
-	pub client: Arc<LightChainClient>,
+	pub client: Arc<dyn LightChainClient>,
 	/// On-demand request service.
 	pub on_demand: Arc<OD>,
 	/// Data cache.
@@ -68,7 +68,7 @@ where
 	/// For correct operation, the OnDemand service is assumed to be registered as a network handler,
 	pub fn new(
 		sync: Arc<S>,
-		client: Arc<LightChainClient>,
+		client: Arc<dyn LightChainClient>,
 		on_demand: Arc<OD>,
 		cache: Arc<Mutex<LightDataCache>>,
 		transaction_queue: Arc<RwLock<LightTransactionQueue>>,
@@ -215,7 +215,7 @@ where
 	fn sign<P>(
 		&self,
 		filled: FilledTransactionRequest,
-		signer: &Arc<Accounts>,
+		signer: &Arc<dyn Accounts>,
 		password: SignWith,
 		post_sign: P
 	) -> BoxFuture<P::Item>
@@ -248,7 +248,7 @@ where
 // TODO: this could be `impl Trait`.
 pub fn fetch_gas_price_corpus<S, OD>(
 	sync: Arc<S>,
-	client: Arc<LightChainClient>,
+	client: Arc<dyn LightChainClient>,
 	on_demand: Arc<OD>,
 	cache: Arc<Mutex<LightDataCache>>,
 ) -> BoxFuture<Corpus<U256>>

rpc/src/v1/helpers/dispatch/mod.rs

@@ -111,7 +111,7 @@ pub trait Dispatcher: Send + Sync + Clone {
 	fn sign<P>(
 		&self,
 		filled: FilledTransactionRequest,
-		signer: &Arc<Accounts>,
+		signer: &Arc<dyn Accounts>,
 		password: SignWith,
 		post_sign: P,
 	) -> BoxFuture<P::Item> where
@@ -277,7 +277,7 @@ impl<T: Debug> From<(T, Option<AccountToken>)> for WithToken<T> {
 /// Execute a confirmation payload.
 pub fn execute<D: Dispatcher + 'static>(
 	dispatcher: D,
-	signer: &Arc<Accounts>,
+	signer: &Arc<dyn Accounts>,
 	payload: ConfirmationPayload,
 	pass: SignWith
 ) -> BoxFuture<WithToken<ConfirmationResponse>> {

rpc/src/v1/helpers/dispatch/prospective_signer.rs

@@ -32,7 +32,7 @@ enum ProspectiveSignerState {
 }
 
 pub struct ProspectiveSigner<P: PostSign> {
-	signer: Arc<Accounts>,
+	signer: Arc<dyn Accounts>,
 	filled: FilledTransactionRequest,
 	chain_id: Option<u64>,
 	reserved: nonce::Reserved,
@@ -46,7 +46,7 @@ pub struct ProspectiveSigner<P: PostSign> {
 
 impl<P: PostSign> ProspectiveSigner<P> {
 	pub fn new(
-		signer: Arc<Accounts>,
+		signer: Arc<dyn Accounts>,
 		filled: FilledTransactionRequest,
 		chain_id: Option<u64>,
 		reserved: nonce::Reserved,

rpc/src/v1/helpers/external_signer/mod.rs

@@ -30,7 +30,7 @@ pub use self::signing_queue::QueueEvent;
 pub struct SignerService {
 	is_enabled: bool,
 	queue: Arc<ConfirmationsQueue>,
-	generate_new_token: Box<Fn() -> Result<String, String> + Send + Sync + 'static>,
+	generate_new_token: Box<dyn Fn() -> Result<String, String> + Send + Sync + 'static>,
 }
 
 impl SignerService {

rpc/src/v1/helpers/external_signer/signing_queue.rs

@@ -96,7 +96,7 @@ pub type ConfirmationReceiver =  oneshot::Receiver<ConfirmationResult>;
 pub struct ConfirmationsQueue {
 	id: Mutex<U256>,
 	queue: RwLock<BTreeMap<U256, ConfirmationSender>>,
-	on_event: RwLock<Vec<Box<Fn(QueueEvent) -> () + Send + Sync>>>,
+	on_event: RwLock<Vec<Box<dyn Fn(QueueEvent) -> () + Send + Sync>>>,
 }
 
 impl ConfirmationsQueue {

rpc/src/v1/helpers/light_fetch.rs

@@ -82,7 +82,7 @@ where
 	OD: OnDemandRequester + 'static
 {
 	/// The light client.
-	pub client: Arc<LightChainClient>,
+	pub client: Arc<dyn LightChainClient>,
 	/// The on-demand request service.
 	pub on_demand: Arc<OD>,
 	/// Handle to the network.
@@ -585,7 +585,7 @@ where
 
 		match maybe_future {
 			Some(recv) => recv,
-			None => Box::new(future::err(errors::network_disabled())) as Box<Future<Item = _, Error = _> + Send>
+			None => Box::new(future::err(errors::network_disabled())) as Box<dyn Future<Item = _, Error = _> + Send>
 		}
 	}
 
@@ -741,7 +741,7 @@ where
 	tx: EthTransaction,
 	hdr: encoded::Header,
 	env_info: ::vm::EnvInfo,
-	engine: Arc<engine::Engine>,
+	engine: Arc<dyn engine::Engine>,
 	on_demand: Arc<OD>,
 	sync: Arc<S>,
 }
@@ -806,7 +806,7 @@ where
 					failed => Ok(future::Loop::Break(failed)),
 				}
 			})
-		})) as Box<Future<Item = _, Error = _> + Send>
+		})) as Box<dyn Future<Item = _, Error = _> + Send>
 	} else {
 		trace!(target: "light_fetch", "Placing execution request for {} gas in on_demand",
 			params.tx.gas);
@@ -827,8 +827,8 @@ where
 		});
 
 		match proved_future {
-			Some(fut) => Box::new(fut) as Box<Future<Item = _, Error = _> + Send>,
+			Some(fut) => Box::new(fut) as Box<dyn Future<Item = _, Error = _> + Send>,
-			None => Box::new(future::err(errors::network_disabled())) as Box<Future<Item = _, Error = _> + Send>,
+			None => Box::new(future::err(errors::network_disabled())) as Box<dyn Future<Item = _, Error = _> + Send>,
 		}
 	}
 }

rpc/src/v1/helpers/subscription_manager.rs

@@ -87,7 +87,7 @@ impl<S: core::Middleware<Metadata>> GenericPollManager<S> {
 		}).is_some()
 	}
 
-	pub fn tick(&self) -> Box<Future<Item=(), Error=()> + Send> {
+	pub fn tick(&self) -> Box<dyn Future<Item=(), Error=()> + Send> {
 		let mut futures = Vec::new();
 		// poll all subscriptions
 		for (id, subscription) in self.subscribers.iter() {

rpc/src/v1/impls/eth.rs

@@ -113,7 +113,7 @@ pub struct EthClient<C, SN: ?Sized, S: ?Sized, M, EM> where
 	client: Arc<C>,
 	snapshot: Arc<SN>,
 	sync: Arc<S>,
-	accounts: Arc<Fn() -> Vec<Address> + Send + Sync>,
+	accounts: Arc<dyn Fn() -> Vec<Address> + Send + Sync>,
 	miner: Arc<M>,
 	external_miner: Arc<EM>,
 	seed_compute: Mutex<SeedHashCompute>,
@@ -193,7 +193,7 @@ impl<C, SN: ?Sized, S: ?Sized, M, EM, T: StateInfo + 'static> EthClient<C, SN, S
 		client: &Arc<C>,
 		snapshot: &Arc<SN>,
 		sync: &Arc<S>,
-		accounts: &Arc<Fn() -> Vec<Address> + Send + Sync>,
+		accounts: &Arc<dyn Fn() -> Vec<Address> + Send + Sync>,
 		miner: &Arc<M>,
 		em: &Arc<EM>,
 		options: EthClientOptions
@@ -449,8 +449,8 @@ impl<C, SN: ?Sized, S: ?Sized, M, EM, T: StateInfo + 'static> EthClient<C, SN, S
 
 				self.miner
 					.pending_state(info.best_block_number)
-					.map(|s| Box::new(s) as Box<StateInfo>)
+					.map(|s| Box::new(s) as Box<dyn StateInfo>)
-					.unwrap_or(Box::new(self.client.latest_state()) as Box<StateInfo>)
+					.unwrap_or(Box::new(self.client.latest_state()) as Box<dyn StateInfo>)
 					.into()
 			}
 		}

rpc/src/v1/impls/eth_pubsub.rs

@@ -137,7 +137,7 @@ where
 {
 	/// Creates a new `EthPubSubClient` for `LightClient`.
 	pub fn light(
-		client: Arc<LightChainClient>,
+		client: Arc<dyn LightChainClient>,
 		on_demand: Arc<OD>,
 		sync: Arc<S>,
 		cache: Arc<Mutex<Cache>>,

rpc/src/v1/impls/light/eth.rs

@@ -58,7 +58,7 @@ pub struct EthClient<C, S: LightSyncProvider + LightNetworkDispatcher + 'static,
 	client: Arc<C>,
 	on_demand: Arc<OD>,
 	transaction_queue: Arc<RwLock<TransactionQueue>>,
-	accounts: Arc<Fn() -> Vec<Address> + Send + Sync>,
+	accounts: Arc<dyn Fn() -> Vec<Address> + Send + Sync>,
 	cache: Arc<Mutex<LightDataCache>>,
 	polls: Mutex<PollManager<SyncPollFilter>>,
 	poll_lifetime: u32,
@@ -101,7 +101,7 @@ where
 		client: Arc<C>,
 		on_demand: Arc<OD>,
 		transaction_queue: Arc<RwLock<TransactionQueue>>,
-		accounts: Arc<Fn() -> Vec<Address> + Send + Sync>,
+		accounts: Arc<dyn Fn() -> Vec<Address> + Send + Sync>,
 		cache: Arc<Mutex<LightDataCache>>,
 		gas_price_percentile: usize,
 		poll_lifetime: u32

rpc/src/v1/impls/light/parity_set.rs

@@ -34,14 +34,14 @@ use v1::types::{Bytes, ReleaseInfo, Transaction};
 
 /// Parity-specific rpc interface for operations altering the settings.
 pub struct ParitySetClient<F> {
-	client: Arc<LightChainClient>,
+	client: Arc<dyn LightChainClient>,
-	net: Arc<ManageNetwork>,
+	net: Arc<dyn ManageNetwork>,
 	fetch: F,
 }
 
 impl<F: Fetch> ParitySetClient<F> {
 	/// Creates new `ParitySetClient` with given `Fetch`.
-	pub fn new(client: Arc<LightChainClient>, net: Arc<ManageNetwork>, fetch: F) -> Self {
+	pub fn new(client: Arc<dyn LightChainClient>, net: Arc<dyn ManageNetwork>, fetch: F) -> Self {
 		ParitySetClient {
 			client,
 			net,

rpc/src/v1/impls/parity.rs

@@ -59,13 +59,13 @@ pub struct ParityClient<C, M, U> {
 	client: Arc<C>,
 	miner: Arc<M>,
 	updater: Arc<U>,
-	sync: Arc<SyncProvider>,
+	sync: Arc<dyn SyncProvider>,
-	net: Arc<ManageNetwork>,
+	net: Arc<dyn ManageNetwork>,
 	logger: Arc<RotatingLogger>,
 	settings: Arc<NetworkSettings>,
 	signer: Option<Arc<SignerService>>,
 	ws_address: Option<Host>,
-	snapshot: Option<Arc<SnapshotService>>,
+	snapshot: Option<Arc<dyn SnapshotService>>,
 }
 
 impl<C, M, U> ParityClient<C, M, U> where
@@ -75,14 +75,14 @@ impl<C, M, U> ParityClient<C, M, U> where
 	pub fn new(
 		client: Arc<C>,
 		miner: Arc<M>,
-		sync: Arc<SyncProvider>,
+		sync: Arc<dyn SyncProvider>,
 		updater: Arc<U>,
-		net: Arc<ManageNetwork>,
+		net: Arc<dyn ManageNetwork>,
 		logger: Arc<RotatingLogger>,
 		settings: Arc<NetworkSettings>,
 		signer: Option<Arc<SignerService>>,
 		ws_address: Option<Host>,
-		snapshot: Option<Arc<SnapshotService>>,
+		snapshot: Option<Arc<dyn SnapshotService>>,
 	) -> Self {
 		ParityClient {
 			client,

rpc/src/v1/impls/parity_set.rs

@@ -87,7 +87,7 @@ pub struct ParitySetClient<C, M, U, F = fetch::Client> {
 	client: Arc<C>,
 	miner: Arc<M>,
 	updater: Arc<U>,
-	net: Arc<ManageNetwork>,
+	net: Arc<dyn ManageNetwork>,
 	fetch: F,
 }
 
@@ -99,7 +99,7 @@ impl<C, M, U, F> ParitySetClient<C, M, U, F>
 		client: &Arc<C>,
 		miner: &Arc<M>,
 		updater: &Arc<U>,
-		net: &Arc<ManageNetwork>,
+		net: &Arc<dyn ManageNetwork>,
 		fetch: F,
 	) -> Self {
 		ParitySetClient {

rpc/src/v1/impls/signer.rs

@@ -40,7 +40,7 @@ use v1::types::{TransactionModification, ConfirmationRequest, ConfirmationRespon
 /// Transactions confirmation (personal) rpc implementation.
 pub struct SignerClient<D: Dispatcher> {
 	signer: Arc<SignerService>,
-	accounts: Arc<dispatch::Accounts>,
+	accounts: Arc<dyn dispatch::Accounts>,
 	dispatcher: D,
 	subscribers: Arc<Mutex<Subscribers<Sink<Vec<ConfirmationRequest>>>>>,
 	deprecation_notice: DeprecationNotice,
@@ -49,7 +49,7 @@ pub struct SignerClient<D: Dispatcher> {
 impl<D: Dispatcher + 'static> SignerClient<D> {
 	/// Create new instance of signer client.
 	pub fn new(
-		accounts: Arc<dispatch::Accounts>,
+		accounts: Arc<dyn dispatch::Accounts>,
 		dispatcher: D,
 		signer: &Arc<SignerService>,
 		executor: Executor,
@@ -81,7 +81,7 @@ impl<D: Dispatcher + 'static> SignerClient<D> {
 	}
 
 	fn confirm_internal<F, T>(&self, id: U256, modification: TransactionModification, f: F) -> BoxFuture<WithToken<ConfirmationResponse>> where
-		F: FnOnce(D, &Arc<dispatch::Accounts>, ConfirmationPayload) -> T,
+		F: FnOnce(D, &Arc<dyn dispatch::Accounts>, ConfirmationPayload) -> T,
 		T: IntoFuture<Item=WithToken<ConfirmationResponse>, Error=Error>,
 		T::Future: Send + 'static
 	{

rpc/src/v1/impls/signing.rs

@@ -91,7 +91,7 @@ fn schedule(executor: Executor,
 /// Implementation of functions that require signing when no trusted signer is used.
 pub struct SigningQueueClient<D> {
 	signer: Arc<SignerService>,
-	accounts: Arc<dispatch::Accounts>,
+	accounts: Arc<dyn dispatch::Accounts>,
 	dispatcher: D,
 	executor: Executor,
 	// None here means that the request hasn't yet been confirmed
@@ -101,7 +101,7 @@ pub struct SigningQueueClient<D> {
 
 impl<D: Dispatcher + 'static> SigningQueueClient<D> {
 	/// Creates a new signing queue client given shared signing queue.
-	pub fn new(signer: &Arc<SignerService>, dispatcher: D, executor: Executor, accounts: &Arc<dispatch::Accounts>) -> Self {
+	pub fn new(signer: &Arc<SignerService>, dispatcher: D, executor: Executor, accounts: &Arc<dyn dispatch::Accounts>) -> Self {
 		SigningQueueClient {
 			signer: signer.clone(),
 			accounts: accounts.clone(),

rpc/src/v1/impls/signing_unsafe.rs

@@ -37,14 +37,14 @@ use v1::types::{
 
 /// Implementation of functions that require signing when no trusted signer is used.
 pub struct SigningUnsafeClient<D> {
-	accounts: Arc<dispatch::Accounts>,
+	accounts: Arc<dyn dispatch::Accounts>,
 	dispatcher: D,
 	deprecation_notice: DeprecationNotice,
 }
 
 impl<D: Dispatcher + 'static> SigningUnsafeClient<D> {
 	/// Creates new SigningUnsafeClient.
-	pub fn new(accounts: &Arc<dispatch::Accounts>, dispatcher: D) -> Self {
+	pub fn new(accounts: &Arc<dyn dispatch::Accounts>, dispatcher: D) -> Self {
 		SigningUnsafeClient {
 			accounts: accounts.clone(),
 			dispatcher,

rpc/src/v1/tests/helpers/miner_service.rs

@@ -55,7 +55,7 @@ pub struct TestMinerService {
 	/// Minimum gas price
 	pub min_gas_price: RwLock<Option<U256>>,
 	/// Signer (if any)
-	pub signer: RwLock<Option<Box<EngineSigner>>>,
+	pub signer: RwLock<Option<Box<dyn EngineSigner>>>,
 
 	authoring_params: RwLock<AuthoringParams>,
 }
@@ -102,7 +102,7 @@ impl StateClient for TestMinerService {
 }
 
 impl EngineInfo for TestMinerService {
-	fn engine(&self) -> &Engine {
+	fn engine(&self) -> &dyn Engine {
 		unimplemented!()
 	}
 }

rpc/src/v1/tests/mocked/manage_network.rs

@@ -31,5 +31,5 @@ impl ManageNetwork for TestManageNetwork {
 	fn start_network(&self) {}
 	fn stop_network(&self) {}
 	fn num_peers_range(&self) -> RangeInclusive<u32> { 25..=50 }
-	fn with_proto_context(&self, _: ProtocolId, _: &mut FnMut(&NetworkContext)) { }
+	fn with_proto_context(&self, _: ProtocolId, _: &mut dyn FnMut(&dyn NetworkContext)) { }
 }

rpc/src/v1/tests/mocked/parity.rs

@@ -45,7 +45,7 @@ pub struct Dependencies {
 	pub updater: Arc<TestUpdater>,
 	pub logger: Arc<RotatingLogger>,
 	pub settings: Arc<NetworkSettings>,
-	pub network: Arc<ManageNetwork>,
+	pub network: Arc<dyn ManageNetwork>,
 	pub ws_address: Option<Host>,
 }
 

rpc/src/v1/tests/mocked/parity_set.rs

@@ -58,7 +58,7 @@ fn parity_set_client(
 		client,
 		miner,
 		updater,
-		&(net.clone() as Arc<ManageNetwork>),
+		&(net.clone() as Arc<dyn ManageNetwork>),
 		FakeFetch::new(Some(1)),
 	)
 }

rpc/src/v1/types/derivation.rs

@@ -19,7 +19,7 @@ use serde::{Deserialize, Deserializer};
 use serde::de::{Error, Visitor};
 
 use ethereum_types::H256;
-use ethstore;
+
 
 /// Type of derivation
 pub enum DerivationType {

updater/hash-fetch/src/client.rs

@@ -37,7 +37,7 @@ pub trait HashFetch: Send + Sync + 'static {
 	/// 2. `on_done` - callback function invoked when the content is ready (or there was error during fetch)
 	///
 	/// This function may fail immediately when fetch cannot be initialized or content cannot be resolved.
-	fn fetch(&self, hash: H256, abort: fetch::Abort, on_done: Box<Fn(Result<PathBuf, Error>) + Send>);
+	fn fetch(&self, hash: H256, abort: fetch::Abort, on_done: Box<dyn Fn(Result<PathBuf, Error>) + Send>);
 }
 
 /// Hash-fetching error.
@@ -111,12 +111,12 @@ pub struct Client<F: Fetch + 'static = fetch::Client> {
 	contract: URLHintContract,
 	fetch: F,
 	executor: Executor,
-	random_path: Arc<Fn() -> PathBuf + Sync + Send>,
+	random_path: Arc<dyn Fn() -> PathBuf + Sync + Send>,
 }
 
 impl<F: Fetch + 'static> Client<F> {
 	/// Creates new instance of the `Client` given on-chain contract client, fetch service and task runner.
-	pub fn with_fetch(contract: Arc<RegistrarClient<Call=Asynchronous>>, fetch: F, executor: Executor) -> Self {
+	pub fn with_fetch(contract: Arc<dyn RegistrarClient<Call=Asynchronous>>, fetch: F, executor: Executor) -> Self {
 		Client {
 			contract: URLHintContract::new(contract),
 			fetch: fetch,
@@ -127,7 +127,7 @@ impl<F: Fetch + 'static> Client<F> {
 }
 
 impl<F: Fetch + 'static> HashFetch for Client<F> {
-	fn fetch(&self, hash: H256, abort: fetch::Abort, on_done: Box<Fn(Result<PathBuf, Error>) + Send>) {
+	fn fetch(&self, hash: H256, abort: fetch::Abort, on_done: Box<dyn Fn(Result<PathBuf, Error>) + Send>) {
 		debug!(target: "fetch", "Fetching: {:?}", hash);
 
 		let random_path = self.random_path.clone();

updater/hash-fetch/src/lib.rs

@@ -35,7 +35,7 @@ extern crate registrar;
 
 pub extern crate fetch;
 
-#[macro_use]
+// #[macro_use]
 extern crate ethabi_derive;
 #[macro_use]
 extern crate ethabi_contract;

updater/hash-fetch/src/urlhint.rs

@@ -95,18 +95,18 @@ pub enum URLHintResult {
 /// URLHint Contract interface
 pub trait URLHint: Send + Sync {
 	/// Resolves given id to registrar entry.
-	fn resolve(&self, id: H256) -> Box<Future<Item = Option<URLHintResult>, Error = String> + Send>;
+	fn resolve(&self, id: H256) -> Box<dyn Future<Item = Option<URLHintResult>, Error = String> + Send>;
 }
 
 /// `URLHintContract` API
 pub struct URLHintContract {
 	registrar: Registrar,
-	client: Arc<RegistrarClient<Call=Asynchronous>>,
+	client: Arc<dyn RegistrarClient<Call=Asynchronous>>,
 }
 
 impl URLHintContract {
 	/// Creates new `URLHintContract`
-	pub fn new(client: Arc<RegistrarClient<Call=Asynchronous>>) -> Self {
+	pub fn new(client: Arc<dyn RegistrarClient<Call=Asynchronous>>) -> Self {
 		URLHintContract {
 			registrar: Registrar::new(client.clone()),
 			client: client,
@@ -159,7 +159,7 @@ fn decode_urlhint_output(output: (String, [u8; 20], Address)) -> Option<URLHintR
 }
 
 impl URLHint for URLHintContract {
-	fn resolve(&self, id: H256) -> Box<Future<Item = Option<URLHintResult>, Error = String> + Send> {
+	fn resolve(&self, id: H256) -> Box<dyn Future<Item = Option<URLHintResult>, Error = String> + Send> {
 		let client = self.client.clone();
 
 		let future = self.registrar.get_address(GITHUB_HINT)

updater/src/lib.rs

@@ -21,6 +21,7 @@
 extern crate client_traits;
 extern crate common_types;
 extern crate ethabi;
+extern crate ethabi_derive;
 extern crate ethcore;
 extern crate ethcore_sync as sync;
 extern crate ethereum_types;
@@ -37,8 +38,6 @@ extern crate target_info;
 #[macro_use]
 extern crate ethabi_contract;
 #[macro_use]
-extern crate ethabi_derive;
-#[macro_use]
 extern crate lazy_static;
 #[macro_use]
 extern crate log;

updater/src/updater.rs

@@ -144,11 +144,11 @@ pub struct Updater<O = OperationsContractClient, F = fetch::Client, T = StdTimeP
 	// Useful environmental stuff.
 	update_policy: UpdatePolicy,
 	weak_self: Mutex<Weak<Updater<O, F, T, R>>>,
-	client: Weak<BlockChainClient>,
+	client: Weak<dyn BlockChainClient>,
-	sync: Option<Weak<SyncProvider>>,
+	sync: Option<Weak<dyn SyncProvider>>,
 	fetcher: F,
 	operations_client: O,
-	exit_handler: Mutex<Option<Box<Fn() + 'static + Send>>>,
+	exit_handler: Mutex<Option<Box<dyn Fn() + 'static + Send>>>,
 
 	time_provider: T,
 	rng: R,
@@ -205,11 +205,11 @@ pub trait OperationsClient: Send + Sync + 'static {
 
 /// `OperationsClient` that delegates calls to the operations contract.
 pub struct OperationsContractClient {
-	client: Weak<BlockChainClient>,
+	client: Weak<dyn BlockChainClient>,
 }
 
 impl OperationsContractClient {
-	fn new(client: Weak<BlockChainClient>) -> Self {
+	fn new(client: Weak<dyn BlockChainClient>) -> Self {
 		OperationsContractClient {
 			client
 		}
@@ -368,8 +368,8 @@ impl GenRange for ThreadRngGenRange {
 impl Updater {
 	/// `Updater` constructor
 	pub fn new(
-		client: &Weak<BlockChainClient>,
+		client: &Weak<dyn BlockChainClient>,
-		sync: &Weak<SyncProvider>,
+		sync: &Weak<dyn SyncProvider>,
 		update_policy: UpdatePolicy,
 		fetcher: fetch::Client,
 	) -> Arc<Updater> {
@@ -756,7 +756,7 @@ pub mod tests {
 
 	#[derive(Clone)]
 	struct FakeFetch {
-		on_done: Arc<Mutex<Option<Box<Fn(Result<PathBuf, Error>) + Send>>>>,
+		on_done: Arc<Mutex<Option<Box<dyn Fn(Result<PathBuf, Error>) + Send>>>>,
 	}
 
 	impl FakeFetch {
@@ -772,7 +772,7 @@ pub mod tests {
 	}
 
 	impl HashFetch for FakeFetch {
-		fn fetch(&self, _hash: H256, _abort: fetch::Abort, on_done: Box<Fn(Result<PathBuf, Error>) + Send>) {
+		fn fetch(&self, _hash: H256, _abort: fetch::Abort, on_done: Box<dyn Fn(Result<PathBuf, Error>) + Send>) {
 			*self.on_done.lock() = Some(on_done);
 		}
 	}

util/EIP-712/src/error.rs

@@ -67,7 +67,7 @@ pub(crate) fn serde_error(expected: &str, field: Option<&str>) -> ErrorKind {
 }
 
 impl Fail for Error {
-	fn cause(&self) -> Option<&Fail> {
+	fn cause(&self) -> Option<&dyn Fail> {
 		self.inner.cause()
 	}
 

util/fetch/src/client.rs

@@ -271,7 +271,7 @@ impl Client {
 }
 
 impl Fetch for Client {
-	type Result = Box<Future<Item=Response, Error=Error> + Send + 'static>;
+	type Result = Box<dyn Future<Item=Response, Error=Error> + Send + 'static>;
 
 	fn fetch(&self, request: Request, abort: Abort) -> Self::Result {
 		debug!(target: "fetch", "fetching: {:?}", request.url());
@@ -608,7 +608,7 @@ impl fmt::Display for Error {
 
 impl ::std::error::Error for Error {
 	fn description(&self) -> &str { "Fetch client error" }
-	fn cause(&self) -> Option<&::std::error::Error> { None }
+	fn cause(&self) -> Option<&dyn std::error::Error> { None }
 }
 
 impl From<hyper::Error> for Error {

util/migration-rocksdb/src/lib.rs

@@ -32,7 +32,7 @@ use std::{fs, io, error};
 use kvdb::DBTransaction;
 use kvdb_rocksdb::{CompactionProfile, Database, DatabaseConfig};
 
-fn other_io_err<E>(e: E) -> io::Error where E: Into<Box<error::Error + Send + Sync>> {
+fn other_io_err<E>(e: E) -> io::Error where E: Into<Box<dyn error::Error + Send + Sync>> {
 	io::Error::new(io::ErrorKind::Other, e)
 }
 
@@ -209,7 +209,7 @@ impl TempIndex {
 /// Manages database migration.
 pub struct Manager {
 	config: Config,
-	migrations: Vec<Box<Migration>>,
+	migrations: Vec<Box<dyn Migration>>,
 }
 
 impl Manager {
@@ -317,7 +317,7 @@ impl Manager {
 	}
 
 	/// Find all needed migrations.
-	fn migrations_from(&mut self, version: u32) -> Vec<&mut Box<Migration>> {
+	fn migrations_from(&mut self, version: u32) -> Vec<&mut Box<dyn Migration>> {
 		self.migrations.iter_mut().filter(|m| m.version() > version).collect()
 	}
 }

util/network-devp2p/src/ip_utils.rs

@@ -97,12 +97,12 @@ impl SocketAddrExt for Ipv4Addr {
 		self.is_multicast() ||
 		self.is_shared_space() ||
 		self.is_special_purpose() ||
-		self.is_benchmarking() ||
+		SocketAddrExt::is_benchmarking(self) ||
 		self.is_future_use()
 	}
 
 	fn is_usable_public(&self) -> bool {
-		!self.is_reserved() &&
+		!SocketAddrExt::is_reserved(self) &&
 		!self.is_private()
 	}
 
@@ -186,7 +186,7 @@ impl SocketAddrExt for IpAddr {
 
 	fn is_reserved(&self) -> bool {
 		match *self {
-			IpAddr::V4(ref ip) => ip.is_reserved(),
+			IpAddr::V4(ref ip) => SocketAddrExt::is_reserved(ip),
 			IpAddr::V6(ref ip) => ip.is_reserved(),
 		}
 	}
@@ -290,7 +290,7 @@ pub fn select_public_address(port: u16) -> SocketAddr {
 			//prefer IPV4 bindings
 			for addr in &list { //TODO: use better criteria than just the first in the list
 				match addr {
-					IpAddr::V4(a) if !a.is_reserved() => {
+					IpAddr::V4(a) if !SocketAddrExt::is_reserved(a) => {
 						return SocketAddr::V4(SocketAddrV4::new(*a, port));
 					},
 					_ => {},

util/network/src/error.rs

@@ -145,7 +145,7 @@ impl From<Option<io::Error>> for AddressResolveError {
 }
 
 impl error::Error for Error {
-	fn source(&self) -> Option<&(error::Error + 'static)> {
+	fn source(&self) -> Option<&(dyn error::Error + 'static)> {
 		match self {
 			Error::Decompression(e) => Some(e),
 			Error::Rlp(e) => Some(e),

util/network/src/lib.rs

@@ -75,7 +75,7 @@ pub enum NetworkIoMessage {
 	/// Register a new protocol handler.
 	AddHandler {
 		/// Handler shared instance.
-		handler: Arc<NetworkProtocolHandler + Sync>,
+		handler: Arc<dyn NetworkProtocolHandler + Sync>,
 		/// Protocol Id.
 		protocol: ProtocolId,
 		/// Supported protocol versions and number of packet IDs reserved by the protocol (packet count).
@@ -361,15 +361,15 @@ impl<'a, T> NetworkContext for &'a T where T: ?Sized + NetworkContext {
 /// `Message` is the type for message data.
 pub trait NetworkProtocolHandler: Sync + Send {
 	/// Initialize the handler
-	fn initialize(&self, _io: &NetworkContext) {}
+	fn initialize(&self, _io: &dyn NetworkContext) {}
 	/// Called when new network packet received.
-	fn read(&self, io: &NetworkContext, peer: &PeerId, packet_id: u8, data: &[u8]);
+	fn read(&self, io: &dyn NetworkContext, peer: &PeerId, packet_id: u8, data: &[u8]);
 	/// Called when new peer is connected. Only called when peer supports the same protocol.
-	fn connected(&self, io: &NetworkContext, peer: &PeerId);
+	fn connected(&self, io: &dyn NetworkContext, peer: &PeerId);
 	/// Called when a previously connected peer disconnects.
-	fn disconnected(&self, io: &NetworkContext, peer: &PeerId);
+	fn disconnected(&self, io: &dyn NetworkContext, peer: &PeerId);
 	/// Timer function called after a timeout created with `NetworkContext::timeout`.
-	fn timeout(&self, _io: &NetworkContext, _timer: TimerToken) {}
+	fn timeout(&self, _io: &dyn NetworkContext, _timer: TimerToken) {}
 }
 
 /// Non-reserved peer modes.

util/registrar/src/lib.rs

@@ -16,10 +16,9 @@
 
 extern crate futures;
 extern crate ethabi;
+extern crate ethabi_derive;
 extern crate keccak_hash;
 
-#[macro_use]
-extern crate ethabi_derive;
 #[macro_use]
 extern crate ethabi_contract;
 

util/registrar/src/registrar.rs

@@ -24,25 +24,25 @@ use_contract!(registrar, "res/registrar.json");
 // Maps a domain name to an Ethereum address
 const DNS_A_RECORD: &'static str = "A";
 
-pub type Asynchronous = Box<Future<Item=Bytes, Error=String> + Send>;
+pub type Asynchronous = Box<dyn Future<Item=Bytes, Error=String> + Send>;
 pub type Synchronous = Result<Bytes, String>;
 
 /// Registrar is dedicated interface to access the registrar contract
 /// which in turn generates an address when a client requests one
 pub struct Registrar {
-	client: Arc<RegistrarClient<Call=Asynchronous>>,
+	client: Arc<dyn RegistrarClient<Call=Asynchronous>>,
 }
 
 impl Registrar {
 	/// Registrar constructor
-	pub fn new(client: Arc<RegistrarClient<Call=Asynchronous>>) -> Self {
+	pub fn new(client: Arc<dyn RegistrarClient<Call=Asynchronous>>) -> Self {
 		Self {
 			client: client,
 		}
 	}
 
 	/// Generate an address for the given key
-	pub fn get_address<'a>(&self, key: &'a str) -> Box<Future<Item = Address, Error = String> + Send> {
+	pub fn get_address<'a>(&self, key: &'a str) -> Box<dyn Future<Item = Address, Error = String> + Send> {
 		// Address of the registrar itself
 		let registrar_address = match self.client.registrar_address() {
 			Ok(a) => a,

util/rlp-compress/src/lib.rs

@@ -40,7 +40,7 @@ pub trait Decompressor {
 }
 
 /// Call this function to compress rlp.
-pub fn compress(c: &[u8], swapper: &Compressor) -> ElasticArray1024<u8> {
+pub fn compress(c: &[u8], swapper: &dyn Compressor) -> ElasticArray1024<u8> {
 	let rlp = Rlp::new(c);
 	if rlp.is_data() {
 		ElasticArray1024::from_slice(swapper.compressed(rlp.as_raw()).unwrap_or_else(|| rlp.as_raw()))
@@ -50,7 +50,7 @@ pub fn compress(c: &[u8], swapper: &Compressor) -> ElasticArray1024<u8> {
 }
 
 /// Call this function to decompress rlp.
-pub fn decompress(c: &[u8], swapper: &Decompressor) -> ElasticArray1024<u8> {
+pub fn decompress(c: &[u8], swapper: &dyn Decompressor) -> ElasticArray1024<u8> {
 	let rlp = Rlp::new(c);
 	if rlp.is_data() {
 		ElasticArray1024::from_slice(swapper.decompressed(rlp.as_raw()).unwrap_or_else(|| rlp.as_raw()))