diff --git a/cli/tests/integration_tests.rs b/cli/tests/integration_tests.rs
index 76f82df231..206664113b 100644
--- a/cli/tests/integration_tests.rs
+++ b/cli/tests/integration_tests.rs
@@ -3203,6 +3203,8 @@ fn set_raw_should_not_panic_on_no_tty() {
 }
 
 #[cfg(windows)]
+// Clippy suggests to remove the `NoStd` prefix from all variants. I disagree.
+#[allow(clippy::enum_variant_names)]
 enum WinProcConstraints {
   NoStdIn,
   NoStdOut,
diff --git a/core/core_isolate.rs b/core/core_isolate.rs
index dc523c9828..18539395f2 100644
--- a/core/core_isolate.rs
+++ b/core/core_isolate.rs
@@ -991,10 +991,7 @@ pub mod tests {
          "#,
       ));
       assert_eq!(dispatch_count.load(Ordering::Relaxed), 1);
-      assert!(match isolate.poll_unpin(cx) {
-        Poll::Ready(Ok(_)) => true,
-        _ => false,
-      });
+      assert!(matches!(isolate.poll_unpin(cx), Poll::Ready(Ok(_))));
       assert_eq!(dispatch_count.load(Ordering::Relaxed), 1);
       js_check(isolate.execute(
         "check2.js",
@@ -1005,17 +1002,11 @@ pub mod tests {
          "#,
       ));
       assert_eq!(dispatch_count.load(Ordering::Relaxed), 2);
-      assert!(match isolate.poll_unpin(cx) {
-        Poll::Ready(Ok(_)) => true,
-        _ => false,
-      });
+      assert!(matches!(isolate.poll_unpin(cx), Poll::Ready(Ok(_))));
       js_check(isolate.execute("check3.js", "assert(nrecv == 2)"));
       assert_eq!(dispatch_count.load(Ordering::Relaxed), 2);
       // We are idle, so the next poll should be the last.
-      assert!(match isolate.poll_unpin(cx) {
-        Poll::Ready(Ok(_)) => true,
-        _ => false,
-      });
+      assert!(matches!(isolate.poll_unpin(cx), Poll::Ready(Ok(_))));
     });
   }
 
@@ -1037,10 +1028,7 @@ pub mod tests {
       assert_eq!(dispatch_count.load(Ordering::Relaxed), 1);
       // The above op never finish, but isolate can finish
       // because the op is an unreffed async op.
-      assert!(match isolate.poll_unpin(cx) {
-        Poll::Ready(Ok(_)) => true,
-        _ => false,
-      });
+      assert!(matches!(isolate.poll_unpin(cx), Poll::Ready(Ok(_))));
     })
   }
 
@@ -1167,10 +1155,7 @@ pub mod tests {
          "#,
       ));
       assert_eq!(dispatch_count.load(Ordering::Relaxed), 1);
-      assert!(match isolate.poll_unpin(cx) {
-        Poll::Ready(Ok(_)) => true,
-        _ => false,
-      });
+      assert!(matches!(isolate.poll_unpin(cx), Poll::Ready(Ok(_))));
       js_check(isolate.execute("check.js", "assert(asyncRecv == 1);"));
     });
   }
diff --git a/core/es_isolate.rs b/core/es_isolate.rs
index 35e215cd7c..3ede1a5e42 100644
--- a/core/es_isolate.rs
+++ b/core/es_isolate.rs
@@ -891,23 +891,14 @@ pub mod tests {
       ));
 
       // First poll runs `prepare_load` hook.
-      assert!(match isolate.poll_unpin(cx) {
-        Poll::Pending => true,
-        _ => false,
-      });
+      assert!(matches!(isolate.poll_unpin(cx), Poll::Pending));
       assert_eq!(prepare_load_count.load(Ordering::Relaxed), 1);
 
       // Second poll actually loads modules into the isolate.
-      assert!(match isolate.poll_unpin(cx) {
-        Poll::Ready(Ok(_)) => true,
-        _ => false,
-      });
+      assert!(matches!(isolate.poll_unpin(cx), Poll::Ready(Ok(_))));
       assert_eq!(resolve_count.load(Ordering::Relaxed), 4);
       assert_eq!(load_count.load(Ordering::Relaxed), 2);
-      assert!(match isolate.poll_unpin(cx) {
-        Poll::Ready(Ok(_)) => true,
-        _ => false,
-      });
+      assert!(matches!(isolate.poll_unpin(cx), Poll::Ready(Ok(_))));
       assert_eq!(resolve_count.load(Ordering::Relaxed), 4);
       assert_eq!(load_count.load(Ordering::Relaxed), 2);
     })