More clippy fixes

src/rpc/consul.rs

@@ -113,7 +113,7 @@ impl ConsulDiscovery {
 			let pubkey = ent
 				.node_meta
 				.get("pubkey")
-				.and_then(|k| hex::decode(&k).ok())
+				.and_then(|k| hex::decode(k).ok())
 				.and_then(|k| NodeID::from_slice(&k[..]));
 			if let (Some(ip), Some(pubkey)) = (ip, pubkey) {
 				ret.push((pubkey, SocketAddr::new(ip, ent.service_port)));

src/rpc/system.rs

@@ -215,7 +215,7 @@ pub fn gen_node_key(metadata_dir: &Path) -> Result<NodeKey, Error> {
 	} else {
 		if !metadata_dir.exists() {
 			info!("Metadata directory does not exist, creating it.");
-			std::fs::create_dir(&metadata_dir)?;
+			std::fs::create_dir(metadata_dir)?;
 		}
 
 		info!("Generating new node key pair.");
@@ -419,7 +419,7 @@ impl System {
 					.get(&n.id.into())
 					.cloned()
 					.map(|(_, st)| st)
-					.unwrap_or(NodeStatus::unknown()),
+					.unwrap_or_else(NodeStatus::unknown),
 			})
 			.collect::<Vec<_>>();
 		known_nodes