diff --git a/accounts/ethstore/src/json/id.rs b/accounts/ethstore/src/json/id.rs
index 27550428f..aa78ba96b 100644
--- a/accounts/ethstore/src/json/id.rs
+++ b/accounts/ethstore/src/json/id.rs
@@ -38,7 +38,7 @@ impl<'a> Into<String> for &'a Uuid {
 		let d3 = &self.0[6..8];
 		let d4 = &self.0[8..10];
 		let d5 = &self.0[10..16];
-		[d1, d2, d3, d4, d5].into_iter().map(|d| d.to_hex()).collect::<Vec<String>>().join("-")
+		[d1, d2, d3, d4, d5].iter().map(|d| d.to_hex()).collect::<Vec<String>>().join("-")
 	}
 }
 
diff --git a/ethcore/builtin/src/lib.rs b/ethcore/builtin/src/lib.rs
index d39f980d3..d01d07ff5 100644
--- a/ethcore/builtin/src/lib.rs
+++ b/ethcore/builtin/src/lib.rs
@@ -359,30 +359,39 @@ impl Implementation for EthereumBuiltin {
 }
 
 #[derive(Debug)]
+/// The identity builtin
 pub struct Identity;
 
 #[derive(Debug)]
+/// The EC Recover builtin
 pub struct EcRecover;
 
 #[derive(Debug)]
+/// The Sha256 builtin
 pub struct Sha256;
 
 #[derive(Debug)]
+/// The Ripemd160 builtin
 pub struct Ripemd160;
 
 #[derive(Debug)]
+/// The Modexp builtin
 pub struct Modexp;
 
 #[derive(Debug)]
+/// The Bn128Add builtin
 pub struct Bn128Add;
 
 #[derive(Debug)]
+/// The Bn128Mul builtin
 pub struct Bn128Mul;
 
 #[derive(Debug)]
+/// The Bn128Pairing builtin
 pub struct Bn128Pairing;
 
 #[derive(Debug)]
+/// The Blake2F builtin
 pub struct Blake2F;
 
 impl Implementation for Identity {
diff --git a/ethcore/machine/src/tx_filter.rs b/ethcore/machine/src/tx_filter.rs
index 1a02a0071..de167bc9e 100644
--- a/ethcore/machine/src/tx_filter.rs
+++ b/ethcore/machine/src/tx_filter.rs
@@ -53,7 +53,7 @@ pub struct TransactionFilter {
 	contract_address: Address,
 	transition_block: BlockNumber,
 	permission_cache: Mutex<LruCache<(H256, Address), u32>>,
-	contract_version_cache: Mutex<LruCache<(H256), Option<U256>>>
+	contract_version_cache: Mutex<LruCache<H256, Option<U256>>>
 }
 
 impl TransactionFilter {
diff --git a/ethcore/src/client/client.rs b/ethcore/src/client/client.rs
index bdaaedebc..fd5ff1306 100644
--- a/ethcore/src/client/client.rs
+++ b/ethcore/src/client/client.rs
@@ -1207,7 +1207,7 @@ impl Client {
 			gas: U256::from(50_000_000),
 			gas_price: U256::default(),
 			value: U256::default(),
-			data: data,
+			data,
 		}.fake_sign(from)
 	}
 
diff --git a/parity/rpc_apis.rs b/parity/rpc_apis.rs
index a3f1836f1..9fb2b9dc5 100644
--- a/parity/rpc_apis.rs
+++ b/parity/rpc_apis.rs
@@ -708,7 +708,7 @@ impl ApiSet {
 			Api::Rpc,
 			Api::Private,
 		]
-			.into_iter()
+			.iter()
 			.cloned()
 			.collect();
 
@@ -750,7 +750,7 @@ impl ApiSet {
 				Api::Traces,
 				Api::ParityTransactionsPool,
 			]
-				.into_iter()
+				.iter()
 				.cloned()
 				.collect(),
 		}
diff --git a/util/EIP-712/src/encode.rs b/util/EIP-712/src/encode.rs
index c91b781b7..e392c5c1b 100644
--- a/util/EIP-712/src/encode.rs
+++ b/util/EIP-712/src/encode.rs
@@ -41,7 +41,7 @@ fn check_hex(string: &str) -> Result<()> {
 }
 /// given a type and HashMap<String, Vec<FieldType>>
 /// returns a HashSet of dependent types of the given type
-fn build_dependencies<'a>(message_type: &'a str, message_types: &'a MessageTypes) -> Option<(HashSet<&'a str>)>
+fn build_dependencies<'a>(message_type: &'a str, message_types: &'a MessageTypes) -> Option<HashSet<&'a str>>
 {
 	if message_types.get(message_type).is_none() {
 		return None;