[issue20599] test_cleanup() of test_builtin failed

[STINNER Victor]

New submission from STINNER Victor:

http://buildbot.python.org/all/builders/x86%20XP-4%203.x/builds/10150/steps/test/logs/stdio

======================================================================
FAIL: test_cleanup (test.test_builtin.ShutdownTest)
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Traceback (most recent call last):
  File "D:\cygwin\home\db3l\buildarea\3.x.bolen-windows\build\lib\test\test_builtin.py", line 1621, in test_cleanup
    self.assertEqual(["before", "after"], out.decode().splitlines())
AssertionError: Lists differ: ['before', 'after'] != []

First list contains 2 additional elements.
First extra element 0:
before

- ['before', 'after']
+ []

----------
messages: 210965
nosy: haypo, serhiy.storchaka
priority: normal
severity: normal
status: open
title: test_cleanup() of test_builtin failed
versions: Python 3.4

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue20599>
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