[issue30387] warning of threading_cleanup in test_threading

[Xiang Zhang]

New submission from Xiang Zhang:

Running test_threading throws a warning now.

./python -m test test_threading
Run tests sequentially
0:00:00 load avg: 0.22 [1/1] test_threading
Warning -- threading_cleanup() failed to cleanup 0 threads after 2 sec (count: 0, dangling: 21)
1 test OK.

Total duration: 13 sec
Tests result: SUCCESS

Seems related to 79ef7f8e88a4972c4aecf95cfc5cd934f1861e08.

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components: Tests
messages: 293857
nosy: haypo, xiang.zhang
priority: normal
severity: normal
status: open
title: warning of threading_cleanup in test_threading

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue30387>
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