deps: bump Rust to 1.75 and fix clippy lints

.github/workflows/ci.yml

@@ -234,9 +234,8 @@ jobs:
       fail-fast: false
       matrix:
         rust-version: [
-          # 1.72.0, # current stable
-          # beta,
-          nightly-2023-09-10
+          1.75.0, # current stable
+          beta,
         ]
     steps:
       - uses: actions/checkout@v4

muxers/mplex/benches/split_send_size.rs

@@ -101,7 +101,7 @@ fn prepare(c: &mut Criterion) {
 fn run(
     receiver_trans: &mut BenchTransport,
     sender_trans: &mut BenchTransport,
-    payload: &Vec<u8>,
+    payload: &[u8],
     listen_addr: &Multiaddr,
 ) {
     receiver_trans

muxers/mplex/src/io.rs

@@ -224,7 +224,7 @@ where
             // yield to give the current task a chance to read
             // from the respective substreams.
             if num_buffered == self.config.max_buffer_len {
-                cx.waker().clone().wake();
+                cx.waker().wake_by_ref();
                 return Poll::Pending;
             }
 
@@ -456,7 +456,7 @@ where
             // next frame for `id`, yield to give the current task
             // a chance to read from the other substream(s).
             if num_buffered == self.config.max_buffer_len {
-                cx.waker().clone().wake();
+                cx.waker().wake_by_ref();
                 return Poll::Pending;
             }
 
@@ -663,7 +663,7 @@ where
                     connection=%self.id,
                     "No task to read from blocked stream. Waking current task."
                 );
-                cx.waker().clone().wake();
+                cx.waker().wake_by_ref();
             } else if let Some(id) = stream_id {
                 // We woke some other task, but are still interested in
                 // reading `Data` frames from the current stream when unblocked.

protocols/kad/src/behaviour.rs

@@ -519,7 +519,7 @@ where
         };
         let key = kbucket::Key::from(*peer);
         match self.kbuckets.entry(&key) {
-            kbucket::Entry::Present(mut entry, _) => {
+            Some(kbucket::Entry::Present(mut entry, _)) => {
                 if entry.value().insert(address) {
                     self.queued_events
                         .push_back(ToSwarm::GenerateEvent(Event::RoutingUpdated {
@@ -536,11 +536,11 @@ where
                 }
                 RoutingUpdate::Success
             }
-            kbucket::Entry::Pending(mut entry, _) => {
+            Some(kbucket::Entry::Pending(mut entry, _)) => {
                 entry.value().insert(address);
                 RoutingUpdate::Pending
             }
-            kbucket::Entry::Absent(entry) => {
+            Some(kbucket::Entry::Absent(entry)) => {
                 let addresses = Addresses::new(address);
                 let status = if self.connected_peers.contains(peer) {
                     NodeStatus::Connected
@@ -578,7 +578,7 @@ where
                     }
                 }
             }
-            kbucket::Entry::SelfEntry => RoutingUpdate::Failed,
+            None => RoutingUpdate::Failed,
         }
     }
 
@@ -599,7 +599,7 @@ where
     ) -> Option<kbucket::EntryView<kbucket::Key<PeerId>, Addresses>> {
         let address = &address.to_owned().with_p2p(*peer).ok()?;
         let key = kbucket::Key::from(*peer);
-        match self.kbuckets.entry(&key) {
+        match self.kbuckets.entry(&key)? {
             kbucket::Entry::Present(mut entry, _) => {
                 if entry.value().remove(address).is_err() {
                     Some(entry.remove()) // it is the last address, thus remove the peer.
@@ -614,7 +614,7 @@ where
                     None
                 }
             }
-            kbucket::Entry::Absent(..) | kbucket::Entry::SelfEntry => None,
+            kbucket::Entry::Absent(..) => None,
         }
     }
 
@@ -627,10 +627,10 @@ where
         peer: &PeerId,
     ) -> Option<kbucket::EntryView<kbucket::Key<PeerId>, Addresses>> {
         let key = kbucket::Key::from(*peer);
-        match self.kbuckets.entry(&key) {
+        match self.kbuckets.entry(&key)? {
             kbucket::Entry::Present(entry, _) => Some(entry.remove()),
             kbucket::Entry::Pending(entry, _) => Some(entry.remove()),
-            kbucket::Entry::Absent(..) | kbucket::Entry::SelfEntry => None,
+            kbucket::Entry::Absent(..) => None,
         }
     }
 
@@ -1164,7 +1164,8 @@ where
                             let key = kbucket::Key::from(node_id);
                             kbuckets
                                 .entry(&key)
-                                .view()
+                                .as_mut()
+                                .and_then(|e| e.view())
                                 .map(|e| e.node.value.clone().into_vec())
                         }
                     } else {
@@ -1220,7 +1221,7 @@ where
     ) {
         let key = kbucket::Key::from(peer);
         match self.kbuckets.entry(&key) {
-            kbucket::Entry::Present(mut entry, old_status) => {
+            Some(kbucket::Entry::Present(mut entry, old_status)) => {
                 if old_status != new_status {
                     entry.update(new_status)
                 }
@@ -1243,7 +1244,7 @@ where
                 }
             }
 
-            kbucket::Entry::Pending(mut entry, old_status) => {
+            Some(kbucket::Entry::Pending(mut entry, old_status)) => {
                 if let Some(address) = address {
                     entry.value().insert(address);
                 }
@@ -1252,7 +1253,7 @@ where
                 }
             }
 
-            kbucket::Entry::Absent(entry) => {
+            Some(kbucket::Entry::Absent(entry)) => {
                 // Only connected nodes with a known address are newly inserted.
                 if new_status != NodeStatus::Connected {
                     return;
@@ -1863,7 +1864,7 @@ where
     fn address_failed(&mut self, peer_id: PeerId, address: &Multiaddr) {
         let key = kbucket::Key::from(peer_id);
 
-        if let Some(addrs) = self.kbuckets.entry(&key).value() {
+        if let Some(addrs) = self.kbuckets.entry(&key).as_mut().and_then(|e| e.value()) {
             // TODO: Ideally, the address should only be removed if the error can
             // be classified as "permanent" but since `err` is currently a borrowed
             // trait object without a `'static` bound, even downcasting for inspection
@@ -1931,7 +1932,12 @@ where
         let (old, new) = (old.get_remote_address(), new.get_remote_address());
 
         // Update routing table.
-        if let Some(addrs) = self.kbuckets.entry(&kbucket::Key::from(peer)).value() {
+        if let Some(addrs) = self
+            .kbuckets
+            .entry(&kbucket::Key::from(peer))
+            .as_mut()
+            .and_then(|e| e.value())
+        {
             if addrs.replace(old, new) {
                 tracing::debug!(
                     %peer,
@@ -2132,7 +2138,7 @@ where
         // the addresses of that peer in the k-buckets.
         let key = kbucket::Key::from(peer_id);
         let mut peer_addrs =
-            if let kbucket::Entry::Present(mut entry, _) = self.kbuckets.entry(&key) {
+            if let Some(kbucket::Entry::Present(mut entry, _)) = self.kbuckets.entry(&key) {
                 let addrs = entry.value().iter().cloned().collect::<Vec<_>>();
                 debug_assert!(!addrs.is_empty(), "Empty peer addresses in routing table.");
                 addrs

protocols/kad/src/kbucket.rs

@@ -172,17 +172,16 @@ where
 
     /// Returns an `Entry` for the given key, representing the state of the entry
     /// in the routing table.
-    pub(crate) fn entry<'a>(&'a mut self, key: &'a TKey) -> Entry<'a, TKey, TVal> {
-        let index = BucketIndex::new(&self.local_key.as_ref().distance(key));
-        if let Some(i) = index {
-            let bucket = &mut self.buckets[i.get()];
-            if let Some(applied) = bucket.apply_pending() {
-                self.applied_pending.push_back(applied)
-            }
-            Entry::new(bucket, key)
-        } else {
-            Entry::SelfEntry
+    ///
+    /// Returns `None` in case the key points to the local node.
+    pub(crate) fn entry<'a>(&'a mut self, key: &'a TKey) -> Option<Entry<'a, TKey, TVal>> {
+        let index = BucketIndex::new(&self.local_key.as_ref().distance(key))?;
+
+        let bucket = &mut self.buckets[index.get()];
+        if let Some(applied) = bucket.apply_pending() {
+            self.applied_pending.push_back(applied)
         }
+        Some(Entry::new(bucket, key))
     }
 
     /// Returns an iterator over all buckets.
@@ -627,7 +626,7 @@ mod tests {
         let other_id = Key::from(PeerId::random());
 
         let mut table = KBucketsTable::<_, ()>::new(local_key, Duration::from_secs(5));
-        if let Entry::Absent(entry) = table.entry(&other_id) {
+        if let Some(Entry::Absent(entry)) = table.entry(&other_id) {
             match entry.insert((), NodeStatus::Connected) {
                 InsertResult::Inserted => (),
                 _ => panic!(),
@@ -645,10 +644,8 @@ mod tests {
     fn entry_self() {
         let local_key = Key::from(PeerId::random());
         let mut table = KBucketsTable::<_, ()>::new(local_key.clone(), Duration::from_secs(5));
-        match table.entry(&local_key) {
-            Entry::SelfEntry => (),
-            _ => panic!(),
-        }
+
+        assert!(table.entry(&local_key).is_none())
     }
 
     #[test]
@@ -661,7 +658,7 @@ mod tests {
                 break;
             }
             let key = Key::from(PeerId::random());
-            if let Entry::Absent(e) = table.entry(&key) {
+            if let Some(Entry::Absent(e)) = table.entry(&key) {
                 match e.insert((), NodeStatus::Connected) {
                     InsertResult::Inserted => count += 1,
                     _ => continue,
@@ -694,10 +691,10 @@ mod tests {
         let full_bucket_index;
         loop {
             let key = Key::from(PeerId::random());
-            if let Entry::Absent(e) = table.entry(&key) {
+            if let Some(Entry::Absent(e)) = table.entry(&key) {
                 match e.insert((), NodeStatus::Disconnected) {
                     InsertResult::Full => {
-                        if let Entry::Absent(e) = table.entry(&key) {
+                        if let Some(Entry::Absent(e)) = table.entry(&key) {
                             match e.insert((), NodeStatus::Connected) {
                                 InsertResult::Pending { disconnected } => {
                                     expected_applied = AppliedPending {
@@ -732,12 +729,12 @@ mod tests {
         full_bucket.pending_mut().unwrap().set_ready_at(elapsed);
 
         match table.entry(&expected_applied.inserted.key) {
-            Entry::Present(_, NodeStatus::Connected) => {}
+            Some(Entry::Present(_, NodeStatus::Connected)) => {}
             x => panic!("Unexpected entry: {x:?}"),
         }
 
         match table.entry(&expected_applied.evicted.as_ref().unwrap().key) {
-            Entry::Absent(_) => {}
+            Some(Entry::Absent(_)) => {}
             x => panic!("Unexpected entry: {x:?}"),
         }
 

protocols/kad/src/kbucket/entry.rs

@@ -81,8 +81,6 @@ pub(crate) enum Entry<'a, TPeerId, TVal> {
     Pending(PendingEntry<'a, TPeerId, TVal>, NodeStatus),
     /// The entry is absent and may be inserted.
     Absent(AbsentEntry<'a, TPeerId, TVal>),
-    /// The entry represents the local node.
-    SelfEntry,
 }
 
 /// The internal representation of the different states of an `Entry`,
@@ -144,7 +142,6 @@ where
             Entry::Present(entry, _) => Some(entry.value()),
             Entry::Pending(entry, _) => Some(entry.value()),
             Entry::Absent(_) => None,
-            Entry::SelfEntry => None,
         }
     }
 }

protocols/relay/src/behaviour/rate_limiter.rs

@@ -124,7 +124,7 @@ impl<Id: Eq + PartialEq + Hash + Clone> GenericRateLimiter<Id> {
         // Note when used with a high number of buckets: This loop refills all the to-be-refilled
         // buckets at once, thus potentially delaying the parent call to `try_next`.
         loop {
-            match self.refill_schedule.get(0) {
+            match self.refill_schedule.front() {
                 // Only continue if (a) there is a bucket and (b) the bucket has not already been
                 // refilled recently.
                 Some((last_refill, _)) if now.duration_since(*last_refill) >= self.interval => {}

transports/dns/src/lib.rs

@@ -416,6 +416,7 @@ pub enum Error<TErr> {
     /// The underlying transport encountered an error.
     Transport(TErr),
     /// DNS resolution failed.
+    #[allow(clippy::enum_variant_names)]
     ResolveError(ResolveError),
     /// DNS resolution was successful, but the underlying transport refused the resolved address.
     MultiaddrNotSupported(Multiaddr),

transports/noise/src/lib.rs

@@ -240,6 +240,7 @@ pub enum Error {
     #[error("failed to decode protobuf ")]
     InvalidPayload(#[from] DecodeError),
     #[error(transparent)]
+    #[allow(clippy::enum_variant_names)]
     SigningError(#[from] libp2p_identity::SigningError),
     #[error("Expected WebTransport certhashes ({}) are not a subset of received ones ({})", certhashes_to_string(.0), certhashes_to_string(.1))]
     UnknownWebTransportCerthashes(HashSet<Multihash<64>>, HashSet<Multihash<64>>),

transports/webtransport-websys/src/error.rs

@@ -11,6 +11,7 @@ pub enum Error {
     Noise(#[from] libp2p_noise::Error),
 
     #[error("JavaScript error: {0}")]
+    #[allow(clippy::enum_variant_names)]
     JsError(String),
 
     #[error("JavaScript typecasting failed")]