test_multiprocessing_fork probabilistic failure

GitHub fields:

assignee = None
closed_at = None
created_at = <Date 2022-04-07.13:41:52.675>
labels = ['type-bug', 'tests', '3.9', '3.10', '3.11']
title = 'test_multiprocessing_fork probabilistic failure'
updated_at = <Date 2022-04-07.13:50:37.734>
user = 'https://bugs.python.org/sxt1001'

bugs.python.org fields:

activity = <Date 2022-04-07.13:50:37.734>
actor = 'sxt1001'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Tests']
creation = <Date 2022-04-07.13:41:52.675>
creator = 'sxt1001'
dependencies = []
files = ['50726']
hgrepos = []
issue_num = 47249
keywords = []
message_count = 2.0
messages = ['416926', '416927']
nosy_count = 1.0
nosy_names = ['sxt1001']
pr_nums = []
priority = 'normal'
resolution = None
stage = None
status = 'open'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue47249'
versions = ['Python 3.9', 'Python 3.10', 'Python 3.11']