Rollup merge of rust-lang#152648 - JonathanBrouwer:debug_spurious, r=jhpratt

Add information to spurious `oneshot::send_before_recv_timeout` test

This test regularly spuriously fails in CI, such as rust-lang#152632 (comment)
We can just remove the assertion but I'd like to understand why, so I'm adding more information to the assert

Author: matthiaskrgr

library/std/tests/sync/oneshot.rs

@@ -97,7 +97,8 @@ fn send_before_recv_timeout() {
         _ => panic!("expected Ok(22)"),
     }
 
-    assert!(start.elapsed() < timeout);
+    let elapsed = start.elapsed();
+    assert!(elapsed < timeout, "expected {elapsed:?} < {timeout:?}");
 }
 
 #[test]