File: test_scheduler_cpu_preemptive/test.py:413 - in test_downscaling
    development.stop(tid)
File: test_scheduler_cpu_preemptive/test.py:376 - in stop
    thread.join()
File: /usr/lib/python3.10/threading.py:1096 - in join
    self._wait_for_tstate_lock()
File: /usr/lib/python3.10/threading.py:1116 - in _wait_for_tstate_lock
    if lock.acquire(block, timeout):
E   Failed: Timeout >900.0s
...