Fixing warnings

ethcore/src/block_queue.rs

@@ -523,7 +523,7 @@ mod tests {
 		let engine = spec.to_engine().unwrap();
 		let mut config = BlockQueueConfig::default();
 		config.max_mem_use = super::MIN_MEM_LIMIT;  // empty queue uses about 15000
-		let mut queue = BlockQueue::new(config, Arc::new(engine), IoChannel::disconnected());
+		let queue = BlockQueue::new(config, Arc::new(engine), IoChannel::disconnected());
 		assert!(!queue.queue_info().is_full());
 		let mut blocks = get_good_dummy_block_seq(50);
 		for b in blocks.drain(..) {

ethcore/src/chainfilter/tests.rs

@@ -28,9 +28,15 @@ pub struct MemoryCache {
 	blooms: HashMap<BloomIndex, H2048>,
 }
 
+impl Default for MemoryCache {
+	fn default() -> Self {
+		MemoryCache::new()
+	}
+}
+
 impl MemoryCache {
 	/// Default constructor for MemoryCache
-	pub fn new() -> MemoryCache {
+	pub fn new() -> Self {
 		MemoryCache { blooms: HashMap::new() }
 	}
 

ethcore/src/client/test_client.rs

@@ -55,9 +55,15 @@ pub enum EachBlockWith {
 	UncleAndTransaction
 }
 
+impl Default for TestBlockChainClient {
+	fn default() -> Self {
+		TestBlockChainClient::new()
+	}
+}
+
 impl TestBlockChainClient {
 	/// Creates new test client.
-	pub fn new() -> TestBlockChainClient {
+	pub fn new() -> Self {
 
 		let mut client = TestBlockChainClient {
 			blocks: RwLock::new(HashMap::new()),

ethcore/src/externalities.rs

@@ -301,8 +301,14 @@ mod tests {
 		env_info: EnvInfo
 	}
 
+	impl Default for TestSetup {
+		fn default() -> Self {
+			TestSetup::new()
+		}
+	}
+
 	impl TestSetup {
-		fn new() -> TestSetup {
+		fn new() -> Self {
 			TestSetup {
 				state: get_temp_state(),
 				engine: get_test_spec().to_engine().unwrap(),

ethcore/src/verification/verification.rs

@@ -255,8 +255,14 @@ mod tests {
 		numbers: HashMap<BlockNumber, H256>,
 	}
 
+	impl Default for TestBlockChain {
+		fn default() -> Self {
+			TestBlockChain::new()
+		}
+	}
+
 	impl TestBlockChain {
-		pub fn new() -> TestBlockChain {
+		pub fn new() -> Self {
 			TestBlockChain {
 				blocks: HashMap::new(),
 				numbers: HashMap::new(),

parity/main.rs

@@ -315,7 +315,7 @@ impl Configuration {
 	fn init_nodes(&self, spec: &Spec) -> Vec<String> {
 		let mut r = if self.args.flag_no_bootstrap { Vec::new() } else { spec.nodes().clone() };
 		if let Some(ref x) = self.args.flag_bootnodes {
-			r.extend(x.split(",").map(|s| Self::normalize_enode(s).unwrap_or_else(|| die!("{}: Invalid node address format given for a boot node.", s))));
+			r.extend(x.split(',').map(|s| Self::normalize_enode(s).unwrap_or_else(|| die!("{}: Invalid node address format given for a boot node.", s))));
 		}
 		r
 	}
@@ -328,7 +328,7 @@ impl Configuration {
 			let host = IpAddr::from_str(host).unwrap_or_else(|_| die!("Invalid host given with `--nat extip:{}`", host));
 			Some(SocketAddr::new(host, self.args.flag_port))
 		} else {
-			listen_address.clone()
+			listen_address
 		};
 		(listen_address, public_address)
 	}
@@ -389,7 +389,7 @@ impl Configuration {
 		}
 		if self.args.cmd_list {
 			println!("Known addresses:");
-			for &(addr, _) in secret_store.accounts().unwrap().iter() {
+			for &(addr, _) in &secret_store.accounts().unwrap() {
 				println!("{:?}", addr);
 			}
 		}
@@ -407,7 +407,11 @@ impl Configuration {
 		let spec = self.spec();
 		let net_settings = self.net_settings(&spec);
 		let mut sync_config = SyncConfig::default();
-		sync_config.network_id = self.args.flag_networkid.as_ref().map(|id| U256::from_str(id).unwrap_or_else(|_| die!("{}: Invalid index given with --networkid", id))).unwrap_or(spec.network_id());
+		sync_config.network_id = self.args.flag_networkid.as_ref().map_or(spec.network_id(), |id| {
+			U256::from_str(id).unwrap_or_else(|_| {
+				die!("{}: Invalid index given with --networkid", id)
+			})
+		});
 
 		// Build client
 		let mut client_config = ClientConfig::default();
@@ -422,8 +426,7 @@ impl Configuration {
 			}
 		}
 		client_config.pruning = match self.args.flag_pruning.as_str() {
-			"" => journaldb::Algorithm::Archive,
-			"archive" => journaldb::Algorithm::Archive,
+			"" | "archive" => journaldb::Algorithm::Archive,
 			"pruned" => journaldb::Algorithm::EarlyMerge,
 //			"fast" => journaldb::Algorithm::OverlayRecent,	// TODO: @arkpar uncomment this once option 2 is merged.
 //			"slow" => journaldb::Algorithm::RefCounted,		// TODO: @gavofyork uncomment this once ref-count algo is merged.
@@ -453,7 +456,7 @@ impl Configuration {
 			let cors = self.args.flag_rpccorsdomain.as_ref().unwrap_or(&self.args.flag_jsonrpc_cors);
 			// TODO: use this as the API list.
 			let apis = self.args.flag_rpcapi.as_ref().unwrap_or(&self.args.flag_jsonrpc_apis);
-			let server_handler = setup_rpc_server(service.client(), sync.clone(), account_service.clone(), &url, cors, apis.split(",").collect());
+			let server_handler = setup_rpc_server(service.client(), sync.clone(), account_service.clone(), &url, cors, apis.split(',').collect());
 			if let Some(handler) = server_handler {
 				panic_handler.forward_from(handler.deref());
 			}

util/src/journaldb/archivedb.rs

@@ -364,7 +364,7 @@ mod tests {
 	fn reopen_fork() {
 		let mut dir = ::std::env::temp_dir();
 		dir.push(H32::random().hex());
-		let (foo, bar, baz) = {
+		let (foo, _bar, _baz) = {
 			let mut jdb = ArchiveDB::new(dir.to_str().unwrap());
 			// history is 1
 			let foo = jdb.insert(b"foo");

util/src/keys/store.rs

@@ -120,9 +120,15 @@ impl AccountProvider for AccountService {
 	}
 }
 
+impl Default for AccountService {
+	fn default() -> Self {
+		AccountService::new()
+	}
+}
+
 impl AccountService {
 	/// New account service with the default location
-	pub fn new() -> AccountService {
+	pub fn new() -> Self {
 		let secret_store = RwLock::new(SecretStore::new());
 		secret_store.write().unwrap().try_import_existing();
 		AccountService {
@@ -568,7 +574,7 @@ mod tests {
 		let temp = RandomTempPath::create_dir();
 		let mut sstore = SecretStore::new_test(&temp);
 		let addr = sstore.new_account("test").unwrap();
-		let _ok = sstore.unlock_account(&addr, "test").unwrap();
+		sstore.unlock_account(&addr, "test").unwrap();
 		let secret = sstore.account_secret(&addr).unwrap();
 		let kp = KeyPair::from_secret(secret).unwrap();
 		assert_eq!(Address::from(kp.public().sha3()), addr);

util/src/network/connection.rs

@@ -513,8 +513,14 @@ mod tests {
 		buf_size: usize,
 	}
 
+	impl Default for TestSocket {
+		fn default() -> Self {
+			TestSocket::new()
+		}
+	}
+
 	impl TestSocket {
-		fn new() -> TestSocket {
+		fn new() -> Self {
 			TestSocket {
 				read_buffer: vec![],
 				write_buffer: vec![],
@@ -593,8 +599,14 @@ mod tests {
 
 	type TestConnection = GenericConnection<TestSocket>;
 
+	impl Default for TestConnection {
+		fn default() -> Self {
+			TestConnection::new()
+		}
+	}
+
 	impl TestConnection {
-		pub fn new() -> TestConnection {
+		pub fn new() -> Self {
 			TestConnection {
 				token: 999998888usize,
 				socket: TestSocket::new(),
@@ -609,8 +621,14 @@ mod tests {
 
 	type TestBrokenConnection = GenericConnection<TestBrokenSocket>;
 
+	impl Default for TestBrokenConnection {
+		fn default() -> Self {
+			TestBrokenConnection::new()
+		}
+	}
+
 	impl TestBrokenConnection {
-		pub fn new() -> TestBrokenConnection {
+		pub fn new() -> Self {
 			TestBrokenConnection {
 				token: 999998888usize,
 				socket: TestBrokenSocket { error: "test broken socket".to_owned() },