Merge branch 'master' into ethminer_crate

Conflicts:
	parity/main.rs

ethcore/src/block_queue.rs

@@ -320,6 +320,9 @@ impl BlockQueue {
 
 	/// Mark given block and all its children as bad. Stops verification.
 	pub fn mark_as_bad(&mut self, block_hashes: &[H256]) {
+		if block_hashes.is_empty() {
+			return;
+		}
 		let mut verification_lock = self.verification.lock().unwrap();
 		let mut processing = self.processing.write().unwrap();
 
@@ -345,6 +348,9 @@ impl BlockQueue {
 
 	/// Mark given block as processed
 	pub fn mark_as_good(&mut self, block_hashes: &[H256]) {
+		if block_hashes.is_empty() {
+			return;
+		}
 		let mut processing = self.processing.write().unwrap();
 		for hash in block_hashes {
 			processing.remove(&hash);
@@ -385,7 +391,7 @@ impl BlockQueue {
 		}
 	}
 
-	pub fn collect_garbage(&self) { 
+	pub fn collect_garbage(&self) {
 		{
 			let mut verification = self.verification.lock().unwrap();
 			verification.unverified.shrink_to_fit();

ethcore/src/client.rs

@@ -404,8 +404,12 @@ impl<V> Client<V> where V: Verifier {
 
 		{
 			let mut block_queue = self.block_queue.write().unwrap();
-			block_queue.mark_as_bad(&bad_blocks);
-			block_queue.mark_as_good(&good_blocks);
+			if !bad_blocks.is_empty() {
+				block_queue.mark_as_bad(&bad_blocks);
+			}
+			if !good_blocks.is_empty() {
+				block_queue.mark_as_good(&good_blocks);
+			}
 		}
 
 		{

ethcore/src/verification/mod.rs

@@ -17,9 +17,11 @@
 pub mod verification;
 pub mod verifier;
 mod canon_verifier;
+#[cfg(test)]
 mod noop_verifier;
 
 pub use self::verification::*;
 pub use self::verifier::Verifier;
 pub use self::canon_verifier::CanonVerifier;
+#[cfg(test)]
 pub use self::noop_verifier::NoopVerifier;