test_threading: test_set_and_clear() failed on Windows x64

[vstinner]

Windows x64:

FAIL: test_set_and_clear (test.test_threading.EventTests.test_set_and_clear)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "D:\a\cpython\cpython\Lib\test\lock_tests.py", line 481, in test_set_and_clear
    self.assertEqual(results, [True] * N)
AssertionError: Lists differ: [False, True, True, True, True] != [True, True, True, True, True]

First differing element 0:
False
True

- [False, True, True, True, True]
?  -------

+ [True, True, True, True, True]
?                    ++++++

The test passed when re-run:

0:19:31 load avg: 9.73 Run 2 tests in parallel using 2 worker processes (timeout: 10 min, worker timeout: 15 min)
0:19:33 load avg: 9.53 [1/2] test_threading passed
Re-running test_threading in verbose mode (matching: test_set_and_clear)
test_set_and_clear (test.test_threading.EventTests.test_set_and_clear) ... ok

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Ran 1 test in 0.766s

OK

build: https://github.com/python/cpython/actions/runs/6323487736/job/17171157457?pr=109922

Linked PRs

• gh-109974: Fix threading lock_tests race conditions #110057
• [3.11] gh-109974: Fix threading lock_tests race conditions (GH-110057) #110063
• gh-109974: Fix more threading lock_tests race conditions #110089
• [3.12] gh-109974: Fix threading lock_tests race conditions (GH-110057) #110344
• [3.12] gh-109974: Fix threading lock_tests race conditions (#110057) #110346
• [3.11][3.12] gh-109974: Fix threading lock_tests race conditions (#110057) … #110355