Running the tests in debug mode gives the following error:
test_3_join_in_forked_from_thread (test.test_threading.ThreadJoinOnShutdown) ... Fatal Python error: Invalid thread state for this thread
[21851 refs]
FAIL
[snip]
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FAIL: test_3_join_in_forked_from_thread (test.test_threading.ThreadJoinOnShutdown)
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Traceback (most recent call last):
File "/home/antoine/cpython/debug/Lib/test/test_threading.py", line 476, in test_3_join_in_forked_from_thread
self._run_and_join(script)
File "/home/antoine/cpython/debug/Lib/test/test_threading.py", line 412, in _run_and_join
self.assertEqual(data, "end of main\nend of thread\n")
AssertionError: 'end of main\n' != 'end of main\nend of thread\n'
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Ran 78 tests in 3.739s