fix compile warnings (#10993)

* fix warnings

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

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>,
-		encryptor: Box<Encryptor>,
+		accounts: Arc<dyn Signer>,
+		encryptor: Box<dyn Encryptor>,
 		config: ProviderConfig,
 		channel: IoChannel<ClientIoMessage>,
-		keys_provider: Arc<KeyProvider>,
-		db: Arc<KeyValueDB>,
+		keys_provider: Arc<dyn KeyProvider>,
+		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
 		});
 	}
-}
+}