Bumping clippy & fixing warnings (#1823)

* Bumping clippy

* Fixing clippy warnings

* Cargo.lock (latest nightly?)

parity/configuration.rs

@@ -361,7 +361,7 @@ impl Configuration {
 				let mut buffer = String::new();
 				let mut node_file = try!(File::open(path).map_err(|e| format!("Error opening reserved nodes file: {}", e)));
 				try!(node_file.read_to_string(&mut buffer).map_err(|_| "Error reading reserved node file"));
-				let lines = buffer.lines().map(|s| s.trim().to_owned()).filter(|s| s.len() > 0).collect::<Vec<_>>();
+				let lines = buffer.lines().map(|s| s.trim().to_owned()).filter(|s| !s.is_empty()).collect::<Vec<_>>();
 				if let Some(invalid) = lines.iter().find(|s| !is_valid_node_url(s)) {
 					return Err(format!("Invalid node address format given for a boot node: {}", invalid));
 				}

parity/migration.rs

@@ -161,7 +161,7 @@ fn consolidate_database(
 	let mut db_config = DatabaseConfig {
 		max_open_files: 64,
 		cache_size: None,
-		compaction: config.compaction_profile.clone(),
+		compaction: config.compaction_profile,
 		columns: None,
 		wal: true,
 	};

parity/run.rs

@@ -132,7 +132,7 @@ pub fn execute(cmd: RunCmd) -> Result<(), String> {
 		Some(id) => id,
 		None => spec.network_id(),
 	};
-	sync_config.fork_block = spec.fork_block().clone();
+	sync_config.fork_block = spec.fork_block();
 
 	// prepare account provider
 	let account_provider = Arc::new(try!(prepare_account_provider(&cmd.dirs, cmd.acc_conf)));