Bug report
Bug description:
I occasionally see
UserWarning: ResourceTracker called reentrantly for resource cleanup, which is unsupported. The semaphore object '/mp-gtkzf9rd' might leak.
warned in the test logs, I suspect test_force_shutdown_workers_dead_workers is the culprit.
It looks like the ResourceTracker was built to warn on re-entrant execution but I think it can be made to work instead.
CPython versions tested on:
CPython main branch
Operating systems tested on:
No response