Apply clippy suggestions

beacon_node/client/src/lib.rs

@@ -66,9 +66,9 @@ impl<TClientType: ClientTypes> Client<TClientType> {
             config,
             beacon_chain,
             exit,
-            exit_signal: exit_signal,
+            exit_signal,
             log,
-            network: network,
+            network,
             phantom: PhantomData,
         })
     }

beacon_node/libp2p/src/rpc/mod.rs

@@ -13,7 +13,7 @@ use libp2p::core::swarm::{
 use libp2p::{Multiaddr, PeerId};
 pub use methods::{HelloMessage, RPCMethod, RPCRequest, RPCResponse};
 pub use protocol::{RPCEvent, RPCProtocol};
-use slog::{debug, o};
+use slog::o;
 use std::marker::PhantomData;
 use tokio::io::{AsyncRead, AsyncWrite};
 
@@ -65,7 +65,7 @@ where
 
     fn inject_connected(&mut self, peer_id: PeerId, connected_point: ConnectedPoint) {
         // if initialised the connection, report this upwards to send the HELLO request
-        if let ConnectedPoint::Dialer { address } = connected_point {
+        if let ConnectedPoint::Dialer { address: _ } = connected_point {
             self.events.push(NetworkBehaviourAction::GenerateEvent(
                 RPCMessage::PeerDialed(peer_id),
             ));

beacon_node/libp2p/src/rpc/protocol.rs

@@ -84,11 +84,11 @@ fn decode(packet: Vec<u8>) -> Result<RPCEvent, DecodeError> {
             RPCMethod::Unknown => return Err(DecodeError::UnknownRPCMethod),
         };
 
-        return Ok(RPCEvent::Request {
+        Ok(RPCEvent::Request {
             id,
             method_id,
             body,
-        });
+        })
     }
     // we have received a response
     else {
@@ -99,11 +99,11 @@ fn decode(packet: Vec<u8>) -> Result<RPCEvent, DecodeError> {
             }
             RPCMethod::Unknown => return Err(DecodeError::UnknownRPCMethod),
         };
-        return Ok(RPCEvent::Response {
+        Ok(RPCEvent::Response {
             id,
             method_id,
             result,
-        });
+        })
     }
 }
 

beacon_node/libp2p/src/service.rs

@@ -73,13 +73,12 @@ impl Service {
         let mut subscribed_topics = vec![];
         for topic in config.topics {
             let t = TopicBuilder::new(topic.to_string()).build();
-            match swarm.subscribe(t) {
-                true => {
-                    trace!(log, "Subscribed to topic: {:?}", topic);
-                    subscribed_topics.push(topic);
-                }
-                false => warn!(log, "Could not subscribe to topic: {:?}", topic),
-            };
+            if swarm.subscribe(t) {
+                trace!(log, "Subscribed to topic: {:?}", topic);
+                subscribed_topics.push(topic);
+            } else {
+                warn!(log, "Could not subscribe to topic: {:?}", topic)
+            }
         }
         info!(log, "Subscribed to topics: {:?}", subscribed_topics);
 

beacon_node/network/src/message_handler.rs

@@ -48,7 +48,7 @@ pub enum HandlerMessage {
 
 impl MessageHandler {
     /// Initializes and runs the MessageHandler.
-    pub fn new(
+    pub fn spawn(
         beacon_chain: Arc<BeaconChain>,
         network_send: crossbeam_channel::Sender<NetworkMessage>,
         executor: &tokio::runtime::TaskExecutor,
@@ -108,16 +108,9 @@ impl MessageHandler {
     /// Handle RPC messages
     fn handle_rpc_message(&mut self, peer_id: PeerId, rpc_message: RPCEvent) {
         match rpc_message {
-            RPCEvent::Request {
-                id,
-                method_id: _, // TODO: Clean up RPC Message types, have a cleaner type by this point.
-                body,
+            RPCEvent::Request { id, body, .. // TODO: Clean up RPC Message types, have a cleaner type by this point.
             } => self.handle_rpc_request(peer_id, id, body),
-            RPCEvent::Response {
-                id,
-                method_id: _,
-                result,
-            } => self.handle_rpc_response(peer_id, id, result),
+            RPCEvent::Response { id, result, .. } => self.handle_rpc_response(peer_id, id, result),
         }
     }
 
@@ -134,11 +127,7 @@ impl MessageHandler {
     // we match on id and ignore responses past the timeout.
     fn handle_rpc_response(&mut self, peer_id: PeerId, id: u64, response: RPCResponse) {
         // if response id is related to a request, ignore (likely RPC timeout)
-        if self
-            .requests
-            .remove(&(peer_id.clone(), id.clone()))
-            .is_none()
-        {
+        if self.requests.remove(&(peer_id.clone(), id)).is_none() {
             debug!(self.log, "Unrecognized response from peer: {:?}", peer_id);
             return;
         }
@@ -193,18 +182,19 @@ impl MessageHandler {
 
     /// Sends a HELLO RPC request or response to a newly connected peer.
     //TODO: The boolean determines if sending request/respond, will be cleaner in the RPC re-write
-    fn send_hello(&mut self, peer_id: PeerId, id: u64, request: bool) {
-        let rpc_event = match request {
-            true => RPCEvent::Request {
+    fn send_hello(&mut self, peer_id: PeerId, id: u64, is_request: bool) {
+        let rpc_event = if is_request {
+            RPCEvent::Request {
                 id,
                 method_id: RPCMethod::Hello.into(),
                 body: RPCRequest::Hello(self.sync.generate_hello()),
-            },
-            false => RPCEvent::Response {
+            }
+        } else {
+            RPCEvent::Response {
                 id,
                 method_id: RPCMethod::Hello.into(),
                 result: RPCResponse::Hello(self.sync.generate_hello()),
-            },
+            }
         };
 
         // send the hello request to the network

beacon_node/network/src/service.rs

@@ -33,7 +33,7 @@ impl Service {
         let (network_send, network_recv) = channel::<NetworkMessage>();
         // launch message handler thread
         let message_handler_log = log.new(o!("Service" => "MessageHandler"));
-        let message_handler_send = MessageHandler::new(
+        let message_handler_send = MessageHandler::spawn(
             beacon_chain,
             network_send.clone(),
             executor,

beacon_node/network/src/sync/simple_sync.rs

@@ -66,7 +66,7 @@ impl SimpleSync {
         //TODO: Paul to verify the logic of these fields.
         HelloMessage {
             network_id: self.network_id,
-            latest_finalized_root: state.finalized_root.clone(),
+            latest_finalized_root: state.finalized_root,
             latest_finalized_epoch: state.finalized_epoch,
             best_root: state.latest_block_roots[0], //TODO: build correct value as a beacon chain function
             best_slot: state.slot - 1,

beacon_node/version/src/lib.rs

@@ -6,7 +6,7 @@ extern crate target_info;
 
 use target_info::Target;
 
-const TRACK: &'static str = "unstable";
+const TRACK: &str = "unstable";
 
 /// Provides the current platform
 pub fn platform() -> String {

eth2/fork_choice/src/slow_lmd_ghost.rs

@@ -219,10 +219,8 @@ impl<T: ClientDB + Sized> ForkChoice for SlowLMDGhost<T> {
                     head_vote_count = vote_count;
                 }
                 // resolve ties - choose smaller hash
-                else if vote_count == head_vote_count {
-                    if *child_hash < head_hash {
-                        head_hash = *child_hash;
-                    }
+                else if vote_count == head_vote_count && *child_hash < head_hash {
+                    head_hash = *child_hash;
                 }
             }
         }