[issue31687] test_semaphore_tracker() of test_multiprocessing_spawn fails randomly (race condition?)

[STINNER Victor]

STINNER Victor <victor.stinner at gmail.com> added the comment:

Failure on x86 Gentoo Refleaks 3.6, two days ago:

http://buildbot.python.org/all/#/builders/72/builds/41

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FAIL: test_semaphore_tracker (test.test_multiprocessing_spawn.TestSemaphoreTracker)
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Traceback (most recent call last):
  File "/buildbot/buildarea/3.6.ware-gentoo-x86.refleak/build/Lib/test/_test_multiprocessing.py", line 4161, in test_semaphore_tracker
    _multiprocessing.sem_unlink(name2)
AssertionError: OSError not raised
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FAIL: test_sys_exit (test.test_multiprocessing_spawn.WithProcessesTestSubclassingProcess)
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Traceback (most recent call last):
  File "/buildbot/buildarea/3.6.ware-gentoo-x86.refleak/build/Lib/test/_test_multiprocessing.py", line 584, in test_sys_exit
    self.assertEqual(p.exitcode, 1)
AssertionError: None != 1

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<https://bugs.python.org/issue31687>
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