[issue31180] test_multiprocessing_spawn hangs randomly on x86 Windows7 3.6

[STINNER Victor]

New submission from STINNER Victor:

http://buildbot.python.org/all/builders/x86%20Windows7%203.6/builds/570/steps/test/logs/stdio

1:21:25 [402/405] test_frame passed -- running: test_multiprocessing_spawn (2805 sec)
1:21:32 [403/405] test_hash passed -- running: test_multiprocessing_spawn (2811 sec)
1:21:33 [404/405] test_raise passed -- running: test_multiprocessing_spawn (2812 sec)

command timed out: 1200 seconds without output running ['Tools\\buildbot\\test.bat', '-j2', '--timeout', '900'], attempting to kill
program finished with exit code 1
elapsedTime=6104.779000

----------
components: Tests
messages: 300119
nosy: haypo
priority: normal
severity: normal
status: open
title: test_multiprocessing_spawn hangs randomly on x86 Windows7 3.6
versions: Python 3.6

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue31180>
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