Previous issue which fixed QueueListenerTest of test_logging is bpo-30131:

commit 8ca2f2faefa8dba323a2e4c4b86efb633d7a53cf
Author: Victor Stinner <victor.stinner@gmail.com>
Date:   Wed Apr 26 15:56:25 2017 +0200

    bpo-30131: test_logging now joins queue threads (#1298)
    
    QueueListenerTest of test_logging now closes the multiprocessing
    Queue and joins its thread to prevent leaking dangling threads to
    following tests.
    
    Add also @support.reap_threads to detect earlier if a test leaks
    threads (and try to "cleanup" these threads).