Verbose/confusing default format on warnings

GitHub fields:

assignee = None
closed_at = None
created_at = <Date 2020-10-18.22:15:40.482>
labels = ['type-bug', 'library', '3.10']
title = 'Verbose/confusing default format on warnings'
updated_at = <Date 2020-10-23.19:52:53.297>
user = 'https://github.com/mithil467'

bugs.python.org fields:

activity = <Date 2020-10-23.19:52:53.297>
actor = 'terry.reedy'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Library (Lib)']
creation = <Date 2020-10-18.22:15:40.482>
creator = 'Mithil'
dependencies = []
files = ['49526']
hgrepos = []
issue_num = 42075
keywords = []
message_count = 5.0
messages = ['378906', '378908', '378910', '378912', '379472']
nosy_count = 3.0
nosy_names = ['terry.reedy', 'steven.daprano', 'Mithil']
pr_nums = []
priority = 'normal'
resolution = None
stage = None
status = 'open'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue42075'
versions = ['Python 3.10']