[issue25747] test_idle failure in leaks searching mode

[Serhiy Storchaka]

New submission from Serhiy Storchaka:

$ ./python -m test.regrtest -uall -R 3:3 test_idle
[1/1] test_idle
beginning 6 repetitions
123456
test test_idle failed -- Traceback (most recent call last):
  File "/home/serhiy/py/cpython-debug/Lib/idlelib/idle_test/test_warning.py", line 76, in test_idlever
    self.assertEqual(len(w), 1)
AssertionError: 0 != 1

1 test failed:
    test_idle

----------
components: IDLE, Tests
messages: 255472
nosy: kbk, roger.serwy, serhiy.storchaka, terry.reedy
priority: normal
severity: normal
status: open
title: test_idle failure in leaks searching mode
type: behavior
versions: Python 3.6

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue25747>
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