The following test timed out in the JDK21 CI:

javax/sound/midi/Sequencer/MetaCallback.java

Here's a snippet from the log file:

#section:main
----------messages:(9/356)----------
command: main MetaCallback
reason: User specified action: run main/othervm/timeout=120 MetaCallback
started: Wed Dec 21 04:44:38 GMT 2022
Mode: othervm [/othervm specified]
Additional options from @modules: --add-modules java.desktop
Timeout information:
--- Timeout information end.
finished: Wed Dec 21 04:53:12 GMT 2022
elapsed time (seconds): 514.301
----------configuration:(3/40)----------
Boot Layer
  add modules: java.desktop

----------System.out:(456/4587)----------
Starting playback...
Tick 0...
Tick 0...
Tick 0...

<snip>

Tick 0...
Tick 0...
Tick 0...
Timeout refired 480 times
Tick 0...
Tick 0...
Tick 0...
Tick 0...
Tick 0...
Tick 0...
Tick 0...
Tick 0...
Tick 0...
Tick 0...
Tick 0...
Tick 0...
Tick 0...
Tick 0...
Tick 0...
Tick 0...
Tick 0...
Tick 0...
Tick 0...
Tick 0...
Tick 0...
Tick 0...
Tick 0...
Tick 0...
Tick 0...
Tick 0...
Tick 0...
Tick 0...
Tick 0...
Tick 0...
Tick 0...
Tick 0...
----------System.err:(0/0)----------
----------rerun:(36/5707)*----------

<snip>

result: Error. Program `/System/Volumes/Data/mesos/work_dir/jib-master/install/jdk-21+3-117/macosx-x64.jdk/jdk-21.jdk/Contents/Home/bin/java' timed out (timeout set to 480000ms, elapsed time including timeout handling was 514290ms).