chore: update CI to clippy 1.76 (#6334)

Co-authored-by: Rafael Bachmann <[email protected]>

benches/copy.rs

@@ -64,7 +64,7 @@ impl SlowHddWriter {
     ) -> std::task::Poll<Result<(), std::io::Error>> {
         // If we hit a service interval, the buffer can be cleared
         let res = self.service_intervals.poll_tick(cx).map(|_| Ok(()));
-        if let Poll::Ready(_) = res {
+        if res.is_ready() {
             self.buffer_used = 0;
         }
         res
@@ -123,7 +123,7 @@ impl AsyncWrite for SlowHddWriter {
         cx: &mut std::task::Context<'_>,
         bufs: &[std::io::IoSlice<'_>],
     ) -> std::task::Poll<Result<usize, std::io::Error>> {
-        let writeable = bufs.into_iter().fold(0, |acc, buf| acc + buf.len());
+        let writeable = bufs.iter().fold(0, |acc, buf| acc + buf.len());
         self.write_bytes(cx, writeable)
     }
 

benches/rt_multi_threaded.rs

@@ -38,7 +38,7 @@ fn rt_multi_spawn_many_local(c: &mut Criterion) {
                     });
                 }
 
-                let _ = rx.recv().unwrap();
+                rx.recv().unwrap();
             });
         })
     });
@@ -165,7 +165,7 @@ fn rt_multi_yield_many(c: &mut Criterion) {
             }
 
             for _ in 0..TASKS {
-                let _ = rx.recv().unwrap();
+                rx.recv().unwrap();
             }
         })
     });

benches/sync_broadcast.rs

@@ -37,7 +37,7 @@ fn contention_impl<const N_TASKS: usize>(g: &mut BenchmarkGroup<WallTime>) {
         let mut rx = tx.subscribe();
         let mut rng = rand::rngs::StdRng::seed_from_u64(n as u64);
         rt.spawn(async move {
-            while let Ok(_) = rx.recv().await {
+            while (rx.recv().await).is_ok() {
                 let r = do_work(&mut rng);
                 let _ = black_box(r);
                 if wg.0.fetch_sub(1, Ordering::Relaxed) == 1 {