Multiprocessing Manager Object Cleanup

GitHub fields:

assignee = None
closed_at = None
created_at = <Date 2020-09-27.01:06:34.985>
labels = ['type-bug', 'library', '3.9']
title = 'Multiprocessing Manager Object Cleanup'
updated_at = <Date 2020-09-27.01:06:34.985>
user = 'https://bugs.python.org/boom0192'

bugs.python.org fields:

activity = <Date 2020-09-27.01:06:34.985>
actor = 'boom0192'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Library (Lib)']
creation = <Date 2020-09-27.01:06:34.985>
creator = 'boom0192'
dependencies = []
files = []
hgrepos = []
issue_num = 41869
keywords = []
message_count = 1.0
messages = ['377551']
nosy_count = 1.0
nosy_names = ['boom0192']
pr_nums = []
priority = 'normal'
resolution = None
stage = None
status = 'open'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue41869'
versions = ['Python 3.9']