chore: fix ci failure on master (#2593)

* Fix clippy warnings
* Pin rustc version to 1.43.1 in macOS

Refs: https://github.com/rust-lang/rust/issues/73030

3 files changed, 3 insertions, 3 deletions

diff --git a/tokio/tests/rt_basic.rs b/tokio/tests/rt_basic.rs
index b9e373b8..9a1a432e 100644
--- a/tokio/tests/rt_basic.rs
+++ b/tokio/tests/rt_basic.rs
@@ -65,7 +65,7 @@ fn no_extra_poll() {
 
     let mut rt = rt();
 
-    rt.spawn(async move { while let Some(_) = rx.next().await {} });
+    rt.spawn(async move { while rx.next().await.is_some() {} });
     rt.block_on(async {
         tokio::task::yield_now().await;
     });
diff --git a/tokio/tests/task_local_set.rs b/tokio/tests/task_local_set.rs
index 38c7c939..bf80b8ee 100644
--- a/tokio/tests/task_local_set.rs
+++ b/tokio/tests/task_local_set.rs
@@ -365,7 +365,7 @@ fn drop_cancels_remote_tasks() {
         let mut rt = rt();
 
         let local = LocalSet::new();
-        local.spawn_local(async move { while let Some(_) = rx.recv().await {} });
+        local.spawn_local(async move { while rx.recv().await.is_some() {} });
         local.block_on(&mut rt, async {
             time::delay_for(Duration::from_millis(1)).await;
         });
diff --git a/tokio/tests/tcp_accept.rs b/tokio/tests/tcp_accept.rs
index ff62fb96..f7ccd7f4 100644
--- a/tokio/tests/tcp_accept.rs
+++ b/tokio/tests/tcp_accept.rs
@@ -80,7 +80,7 @@ async fn no_extra_poll() {
             s: listener.incoming(),
         };
         assert_ok!(tx.send(Arc::clone(&incoming.npolls)));
-        while let Some(_) = incoming.next().await {
+        while incoming.next().await.is_some() {
             accepted_tx.send(()).unwrap();
         }
     });