rust 1.53.0 updates (sigp#2411)

## Issue Addressed

`make lint` failing on rust 1.53.0.

## Proposed Changes

1.53.0 updates

## Additional Info

I haven't figure out why yet, we were now hitting the recursion limit in a few crates. So I had to add `#![recursion_limit = "256"]` in a few places


Co-authored-by: realbigsean <seananderson33@gmail.com>
Co-authored-by: Michael Sproul <michael@sigmaprime.io>

.github/custom/config.toml

@@ -0,0 +1,3 @@
+# Custom Cargo config to be used for the udeps CI job
+[http]
+multiplexing = false

.github/workflows/test-suite.yml

@@ -12,7 +12,7 @@ env:
   # Deny warnings in CI
   RUSTFLAGS: "-D warnings"
   # The Nightly version used for cargo-udeps, might need updating from time to time.
-  PINNED_NIGHTLY: nightly-2021-03-01
+  PINNED_NIGHTLY: nightly-2021-06-09
 jobs:
   target-branch-check:
     name: target-branch-check
@@ -198,6 +198,10 @@ jobs:
       run: rustup toolchain install $PINNED_NIGHTLY
     - name: Install cargo-udeps
       run: cargo install cargo-udeps --locked
+    - name: Create Cargo config dir
+      run: mkdir -p .cargo
+    - name: Install custom Cargo config
+      run: cp -f .github/custom/config.toml .cargo/config.toml
     - name: Run cargo udeps to identify unused crates in the dependency graph
       run: make udeps
     env:

account_manager/src/validator/create.rs

@@ -236,7 +236,7 @@ pub fn cli_run<T: EthSpec>(
             .map_err(|e| {
                 format!(
                     "Error registering validator {}: {:?}",
-                    voting_pubkey.to_hex_string(),
+                    voting_pubkey.as_hex_string(),
                     e
                 )
             })?;
@@ -250,7 +250,7 @@ pub fn cli_run<T: EthSpec>(
             .build()
             .map_err(|e| format!("Unable to build validator directory: {:?}", e))?;
 
-        println!("{}/{}\t{}", i + 1, n, voting_pubkey.to_hex_string());
+        println!("{}/{}\t{}", i + 1, n, voting_pubkey.as_hex_string());
     }
 
     Ok(())

account_manager/src/validator/import.rs

@@ -242,7 +242,7 @@ pub fn cli_run(matches: &ArgMatches, validator_dir: PathBuf) -> Result<(), Strin
             .map_err(|e| {
                 format!(
                     "Error registering validator {}: {:?}",
-                    voting_pubkey.to_hex_string(),
+                    voting_pubkey.as_hex_string(),
                     e
                 )
             })?;

beacon_node/beacon_chain/src/eth1_chain.rs

@@ -762,8 +762,8 @@ mod test {
 
             let eth1_chain = get_eth1_chain();
 
-            assert_eq!(
-                eth1_chain.use_dummy_backend, false,
+            assert!(
+                !eth1_chain.use_dummy_backend,
                 "test should not use dummy backend"
             );
 
@@ -795,8 +795,8 @@ mod test {
             let eth1_chain = get_eth1_chain();
             let max_deposits = <E as EthSpec>::MaxDeposits::to_u64();
 
-            assert_eq!(
-                eth1_chain.use_dummy_backend, false,
+            assert!(
+                !eth1_chain.use_dummy_backend,
                 "test should not use dummy backend"
             );
 
@@ -877,8 +877,8 @@ mod test {
 
             let eth1_chain = get_eth1_chain();
 
-            assert_eq!(
-                eth1_chain.use_dummy_backend, false,
+            assert!(
+                !eth1_chain.use_dummy_backend,
                 "test should not use dummy backend"
             );
 
@@ -901,8 +901,8 @@ mod test {
 
             let eth1_chain = get_eth1_chain();
 
-            assert_eq!(
-                eth1_chain.use_dummy_backend, false,
+            assert!(
+                !eth1_chain.use_dummy_backend,
                 "test should not use dummy backend"
             );
 

beacon_node/beacon_chain/src/state_advance_timer.rs

@@ -353,11 +353,11 @@ mod tests {
     #[test]
     fn lock() {
         let lock = Lock::new();
-        assert_eq!(lock.lock(), false);
-        assert_eq!(lock.lock(), true);
-        assert_eq!(lock.lock(), true);
+        assert!(!lock.lock());
+        assert!(lock.lock());
+        assert!(lock.lock());
         lock.unlock();
-        assert_eq!(lock.lock(), false);
-        assert_eq!(lock.lock(), true);
+        assert!(!lock.lock());
+        assert!(lock.lock());
     }
 }

beacon_node/eth2_libp2p/src/discovery/enr_ext.rs

@@ -88,22 +88,22 @@ impl EnrExt for Enr {
             if let Some(udp) = self.udp() {
                 let mut multiaddr: Multiaddr = ip.into();
                 multiaddr.push(Protocol::Udp(udp));
-                multiaddr.push(Protocol::P2p(peer_id.clone().into()));
+                multiaddr.push(Protocol::P2p(peer_id.into()));
                 multiaddrs.push(multiaddr);
             }
 
             if let Some(tcp) = self.tcp() {
                 let mut multiaddr: Multiaddr = ip.into();
                 multiaddr.push(Protocol::Tcp(tcp));
-                multiaddr.push(Protocol::P2p(peer_id.clone().into()));
+                multiaddr.push(Protocol::P2p(peer_id.into()));
                 multiaddrs.push(multiaddr);
             }
         }
         if let Some(ip6) = self.ip6() {
             if let Some(udp6) = self.udp6() {
                 let mut multiaddr: Multiaddr = ip6.into();
                 multiaddr.push(Protocol::Udp(udp6));
-                multiaddr.push(Protocol::P2p(peer_id.clone().into()));
+                multiaddr.push(Protocol::P2p(peer_id.into()));
                 multiaddrs.push(multiaddr);
             }
 
@@ -128,7 +128,7 @@ impl EnrExt for Enr {
             if let Some(tcp) = self.tcp() {
                 let mut multiaddr: Multiaddr = ip.into();
                 multiaddr.push(Protocol::Tcp(tcp));
-                multiaddr.push(Protocol::P2p(peer_id.clone().into()));
+                multiaddr.push(Protocol::P2p(peer_id.into()));
                 multiaddrs.push(multiaddr);
             }
         }
@@ -154,7 +154,7 @@ impl EnrExt for Enr {
             if let Some(udp) = self.udp() {
                 let mut multiaddr: Multiaddr = ip.into();
                 multiaddr.push(Protocol::Udp(udp));
-                multiaddr.push(Protocol::P2p(peer_id.clone().into()));
+                multiaddr.push(Protocol::P2p(peer_id.into()));
                 multiaddrs.push(multiaddr);
             }
         }

beacon_node/eth2_libp2p/src/peer_manager/mod.rs

@@ -556,20 +556,18 @@ impl<TSpec: EthSpec> PeerManager<TSpec> {
                 if known_meta_data.seq_number < meta_data.seq_number {
                     debug!(self.log, "Updating peer's metadata";
                         "peer_id" => %peer_id, "known_seq_no" => known_meta_data.seq_number, "new_seq_no" => meta_data.seq_number);
-                    peer_info.meta_data = Some(meta_data);
                 } else {
                     debug!(self.log, "Received old metadata";
                         "peer_id" => %peer_id, "known_seq_no" => known_meta_data.seq_number, "new_seq_no" => meta_data.seq_number);
                     // Updating metadata even in this case to prevent storing
                     // incorrect  `metadata.attnets` for a peer
-                    peer_info.meta_data = Some(meta_data);
                 }
             } else {
                 // we have no meta-data for this peer, update
                 debug!(self.log, "Obtained peer's metadata";
                     "peer_id" => %peer_id, "new_seq_no" => meta_data.seq_number);
-                peer_info.meta_data = Some(meta_data);
             }
+            peer_info.meta_data = Some(meta_data);
         } else {
             crit!(self.log, "Received METADATA from an unknown peer";
                 "peer_id" => %peer_id);
@@ -583,11 +581,7 @@ impl<TSpec: EthSpec> PeerManager<TSpec> {
             // port is removed, which is assumed to be associated with the discv5 protocol (and
             // therefore irrelevant for other libp2p components).
             let mut out_list = enr.multiaddr();
-            out_list.retain(|addr| {
-                addr.iter()
-                    .find(|v| matches!(v, MProtocol::Udp(_)))
-                    .is_none()
-            });
+            out_list.retain(|addr| !addr.iter().any(|v| matches!(v, MProtocol::Udp(_))));
 
             out_list
         } else {

beacon_node/eth2_libp2p/src/peer_manager/peer_sync_status.rs

@@ -62,14 +62,14 @@ impl PeerSyncStatus {
         matches!(self, PeerSyncStatus::Behind { .. })
     }
 
+    /// Updates the peer's sync status, returning whether the status transitioned.
+    ///
+    /// E.g. returns `true` if the state changed from `Synced` to `Advanced`, but not if
+    /// the status remained `Synced` with different `SyncInfo` within.
     pub fn update(&mut self, new_state: PeerSyncStatus) -> bool {
-        if *self == new_state {
-            *self = new_state;
-            false // state was not updated
-        } else {
-            *self = new_state;
-            true
-        }
+        let changed_status = *self != new_state;
+        *self = new_state;
+        changed_status
     }
 
     pub fn as_str(&self) -> &'static str {

beacon_node/eth2_libp2p/src/rpc/handler.rs

@@ -587,7 +587,7 @@ where
                 match std::mem::replace(&mut info.state, InboundState::Poisoned) {
                     InboundState::Idle(substream) if !deactivated => {
                         if !info.pending_items.is_empty() {
-                            let to_send = std::mem::replace(&mut info.pending_items, vec![]);
+                            let to_send = std::mem::take(&mut info.pending_items);
                             let fut = process_inbound_substream(
                                 substream,
                                 info.remaining_chunks,
@@ -665,8 +665,7 @@ where
                                 // elements
 
                                 if !deactivated && !info.pending_items.is_empty() {
-                                    let to_send =
-                                        std::mem::replace(&mut info.pending_items, vec![]);
+                                    let to_send = std::mem::take(&mut info.pending_items);
                                     let fut = process_inbound_substream(
                                         substream,
                                         info.remaining_chunks,

beacon_node/http_api/src/lib.rs

@@ -1254,7 +1254,6 @@ pub fn serve<T: BeaconChainTypes>(
 
     // GET config/fork_schedule
     let get_config_fork_schedule = config_path
-        .clone()
         .and(warp::path("fork_schedule"))
         .and(warp::path::end())
         .and(chain_filter.clone())
@@ -1268,7 +1267,6 @@ pub fn serve<T: BeaconChainTypes>(
 
     // GET config/spec
     let get_config_spec = config_path
-        .clone()
         .and(warp::path("spec"))
         .and(warp::path::end())
         .and(chain_filter.clone())
@@ -1284,7 +1282,6 @@ pub fn serve<T: BeaconChainTypes>(
 
     // GET config/deposit_contract
     let get_config_deposit_contract = config_path
-        .clone()
         .and(warp::path("deposit_contract"))
         .and(warp::path::end())
         .and(chain_filter.clone())

beacon_node/http_api/tests/tests.rs

@@ -1,4 +1,5 @@
 #![cfg(not(debug_assertions))] // Tests are too slow in debug.
+#![recursion_limit = "256"]
 
 use beacon_chain::{
     test_utils::{AttestationStrategy, BeaconChainHarness, BlockStrategy, EphemeralHarnessType},
@@ -2333,7 +2334,7 @@ async fn poll_events<S: Stream<Item = Result<EventKind<T>, eth2::Error>> + Unpin
     };
 
     tokio::select! {
-            _ = collect_stream_fut => {return events}
+            _ = collect_stream_fut => {events}
             _ = tokio::time::sleep(timeout) => { return events; }
     }
 }

beacon_node/network/src/attestation_service/mod.rs

@@ -559,11 +559,10 @@ impl<T: BeaconChainTypes> AttestationService<T> {
             return;
         }
         // If there are no unsubscription events for `subnet_id`, we unsubscribe immediately.
-        if self
+        if !self
             .unsubscriptions
             .keys()
-            .find(|s| s.subnet_id == subnet_id)
-            .is_none()
+            .any(|s| s.subnet_id == subnet_id)
         {
             // we are not at capacity, unsubscribe from the current subnet.
             debug!(self.log, "Unsubscribing from random subnet"; "subnet_id" => *subnet_id);
@@ -601,11 +600,10 @@ impl<T: BeaconChainTypes> AttestationService<T> {
 
         for subnet_id in to_remove_subnets {
             // If there are no unsubscription events for `subnet_id`, we unsubscribe immediately.
-            if self
+            if !self
                 .unsubscriptions
                 .keys()
-                .find(|s| s.subnet_id == *subnet_id)
-                .is_none()
+                .any(|s| s.subnet_id == *subnet_id)
             {
                 self.events
                     .push_back(AttServiceMessage::Unsubscribe(*subnet_id));

beacon_node/network/src/attestation_service/tests/mod.rs

@@ -147,10 +147,10 @@ async fn get_events<S: Stream<Item = AttServiceMessage> + Unpin>(
     };
 
     tokio::select! {
-        _ = collect_stream_fut => {return events}
+        _ = collect_stream_fut => {events}
         _ = tokio::time::sleep(
         Duration::from_millis(SLOT_DURATION_MILLIS) * num_slots_before_timeout,
-    ) => { return events; }
+    ) => { events }
         }
 }
 

beacon_node/network/src/nat.rs

@@ -83,7 +83,7 @@ pub fn construct_upnp_mappings<T: EthSpec>(
                         "tcp",
                         &log,
                     ).and_then(|_| {
-                        let external_socket = external_ip.as_ref().map(|ip| SocketAddr::new(ip.clone().into(), config.tcp_port)).map_err(|_| ());
+                        let external_socket = external_ip.as_ref().map(|ip| SocketAddr::new((*ip).into(), config.tcp_port)).map_err(|_| ());
                         info!(log, "UPnP TCP route established"; "external_socket" => format!("{}:{}", external_socket.as_ref().map(|ip| ip.to_string()).unwrap_or_else(|_| "".into()), config.tcp_port));
                         external_socket
                     }).ok();

beacon_node/network/src/sync/range_sync/chain.rs

@@ -933,10 +933,10 @@ impl<T: BeaconChainTypes> SyncingChain<T> {
         // check if we have the batch for our optimistic start. If not, request it first.
         // We wait for this batch before requesting any other batches.
         if let Some(epoch) = self.optimistic_start {
-            if !self.batches.contains_key(&epoch) {
+            if let Entry::Vacant(entry) = self.batches.entry(epoch) {
                 if let Some(peer) = idle_peers.pop() {
                     let optimistic_batch = BatchInfo::new(&epoch, EPOCHS_PER_BATCH);
-                    self.batches.insert(epoch, optimistic_batch);
+                    entry.insert(optimistic_batch);
                     self.send_batch(network, epoch, peer)?;
                 }
             }

beacon_node/store/src/hot_cold_store.rs

@@ -285,12 +285,11 @@ impl<E: EthSpec, Hot: ItemStore<E>, Cold: ItemStore<E>> HotColdDB<E, Hot, Cold>
 
     /// Store a state in the store.
     pub fn put_state(&self, state_root: &Hash256, state: &BeaconState<E>) -> Result<(), Error> {
+        let mut ops: Vec<KeyValueStoreOp> = Vec::new();
         if state.slot < self.get_split_slot() {
-            let mut ops: Vec<KeyValueStoreOp> = Vec::new();
             self.store_cold_state(state_root, &state, &mut ops)?;
             self.cold_db.do_atomically(ops)
         } else {
-            let mut ops: Vec<KeyValueStoreOp> = Vec::new();
             self.store_hot_state(state_root, state, &mut ops)?;
             self.hot_db.do_atomically(ops)
         }

beacon_node/store/src/lib.rs

@@ -251,18 +251,18 @@ mod tests {
         let key = Hash256::random();
         let item = StorableThing { a: 1, b: 42 };
 
-        assert_eq!(store.exists::<StorableThing>(&key).unwrap(), false);
+        assert!(!store.exists::<StorableThing>(&key).unwrap());
 
         store.put(&key, &item).unwrap();
 
-        assert_eq!(store.exists::<StorableThing>(&key).unwrap(), true);
+        assert!(store.exists::<StorableThing>(&key).unwrap());
 
         let retrieved = store.get(&key).unwrap().unwrap();
         assert_eq!(item, retrieved);
 
         store.delete::<StorableThing>(&key).unwrap();
 
-        assert_eq!(store.exists::<StorableThing>(&key).unwrap(), false);
+        assert!(!store.exists::<StorableThing>(&key).unwrap());
 
         assert_eq!(store.get::<StorableThing>(&key).unwrap(), None);
     }
@@ -289,14 +289,14 @@ mod tests {
         let key = Hash256::random();
         let item = StorableThing { a: 1, b: 42 };
 
-        assert_eq!(store.exists::<StorableThing>(&key).unwrap(), false);
+        assert!(!store.exists::<StorableThing>(&key).unwrap());
 
         store.put(&key, &item).unwrap();
 
-        assert_eq!(store.exists::<StorableThing>(&key).unwrap(), true);
+        assert!(store.exists::<StorableThing>(&key).unwrap());
 
         store.delete::<StorableThing>(&key).unwrap();
 
-        assert_eq!(store.exists::<StorableThing>(&key).unwrap(), false);
+        assert!(!store.exists::<StorableThing>(&key).unwrap());
     }
 }

beacon_node/tests/test.rs

@@ -1,4 +1,5 @@
 #![cfg(test)]
+#![recursion_limit = "256"]
 
 use beacon_chain::StateSkipConfig;
 use node_test_rig::{