⚠️⚠️⚠️ Buildbot failure ⚠️⚠️⚠️

Hi! The buildbot AMD64 Windows7 SP1 3.x has failed when building commit a065232.

What do you need to do:

1. Don't panic.
2. Check the buildbot page in the devguide if you don't know what the buildbots are or how they work.
3. Go to the page of the buildbot that failed (https://buildbot.python.org/all/#builders/40/builds/3408) and take a look at the build logs.
4. Check if the failure is related to this commit (a065232) or if it is a false positive.
5. If the failure is related to this commit, please, reflect that on the issue and make a new Pull Request with a fix.

You can take a look at the buildbot page here:

https://buildbot.python.org/all/#builders/40/builds/3408

Failed tests:

• test_regrtest

Summary of the results of the build (if available):

== Tests result: FAILURE then SUCCESS ==

386 tests OK.

10 slowest tests:

• test_multiprocessing_spawn: 2 min 40 sec
• test_tools: 1 min 59 sec
• test_tokenize: 1 min 40 sec
• test_concurrent_futures: 1 min 37 sec
• test_lib2to3: 1 min 23 sec
• test_capi: 1 min 21 sec
• test_asyncio: 1 min 6 sec
• test_venv: 1 min 6 sec
• test_unicodedata: 1 min 5 sec
• test_io: 58.3 sec

33 tests skipped:
test_curses test_dbm_gnu test_dbm_ndbm test_devpoll test_epoll
test_fcntl test_fork1 test_gdb test_grp test_ioctl test_kqueue
test_multiprocessing_fork test_multiprocessing_forkserver test_nis
test_openpty test_ossaudiodev test_pipes test_poll test_posix
test_pty test_pwd test_readline test_resource test_spwd
test_syslog test_threadsignals test_tix test_tk test_ttk_guionly
test_wait3 test_wait4 test_xxtestfuzz test_zipfile64

1 re-run test:
test_regrtest

Total duration: 24 min 39 sec

Traceback (most recent call last):
  File "C:\buildbot.python.org\3.x.kloth-win64\build\lib\test\support\__init__.py", line 380, in _force_run
    return func(*args)
PermissionError: [WinError 32] The process cannot access the file because it is being used by another process: 'C:\\buildbot.python.org\\3.x.kloth-win64\\build\\build\\test_python_4088\\test_python_worker_7024'


Traceback (most recent call last):
  File "C:\buildbot.python.org\3.x.kloth-win64\build\lib\runpy.py", line 192, in _run_module_as_main


Traceback (most recent call last):
  File "C:\buildbot.python.org\3.x.kloth-win64\build\lib\test\support\__init__.py", line 1093, in temp_dir
    yield path
  File "C:\buildbot.python.org\3.x.kloth-win64\build\lib\test\support\__init__.py", line 1145, in temp_cwd
    yield cwd_dir
  File "C:\buildbot.python.org\3.x.kloth-win64\build\lib\test\libregrtest\main.py", line 634, in main
    self._main(tests, kwargs)
  File "C:\buildbot.python.org\3.x.kloth-win64\build\lib\test\libregrtest\main.py", line 707, in _main
    sys.exit(0)
SystemExit: 0