Also see during quickstart install, which can also be fixed as part of this bug:-

2021-02-10 17:50:35.170654 | primary | Installing setuptools, pip, wheel...
2021-02-10 17:50:35.170733 | primary |   Complete output from command /home/zuul/workspace/.quickstart/bin/python3 - setuptools pip wheel:
2021-02-10 17:50:35.170748 | primary |   Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'ReadTimeoutError("HTTPSConnectionPool(host='opendev.org', port=443): Read timed out. (read timeout=60.0)",)': /openstack/requirements/raw/branch/stable/train/upper-constraints.txt
2021-02-10 17:50:35.170760 | primary | Exception:
2021-02-10 17:50:35.170768 | primary | Traceback (most recent call last):
2021-02-10 17:50:35.170777 | primary |   File "/usr/share/python3-wheels/pip-9.0.3-py2.py3-none-any.whl/pip/basecommand.py", line 215, in main
2021-02-10 17:50:35.170785 | primary |     status = self.run(options, args)
2021-02-10 17:50:35.170793 | primary |   File "/usr/share/python3-wheels/pip-9.0.3-py2.py3-none-any.whl/pip/commands/install.py", line 334, in run
2021-02-10 17:50:35.170802 | primary |     wheel_cache
2021-02-10 17:50:35.170811 | primary |   File "/usr/share/python3-wheels/pip-9.0.3-py2.py3-none-any.whl/pip/basecommand.py", line 269, in populate_requirement_set
2021-02-10 17:50:35.170819 | primary |     session=session, wheel_cache=wheel_cache):
2021-02-10 17:50:35.170828 | primary |   File "/usr/share/python3-wheels/pip-9.0.3-py2.py3-none-any.whl/pip/req/req_file.py", line 84, in parse_requirements
2021-02-10 17:50:35.170836 | primary |     filename, comes_from=comes_from, session=session
2021-02-10 17:50:35.170845 | primary |   File "/usr/share/python3-wheels/pip-9.0.3-py2.py3-none-any.whl/pip/download.py", line 419, in get_file_content
2021-02-10 17:50:35.170853 | primary |     resp.raise_for_status()
2021-02-10 17:50:35.170879 | primary |   File "/usr/share/python3-wheels/pip-9.0.3-py2.py3-none-any.whl/pip/_vendor/requests/models.py", line 935, in raise_for_status
2021-02-10 17:50:35.170888 | primary |     raise HTTPError(http_error_msg, response=self)
2021-02-10 17:50:35.170896 | primary | pip._vendor.requests.exceptions.HTTPError: 500 Server Error: Internal Server Error for url: https://opendev.org/openstack/requirements/raw/branch/stable/train/upper-constraints.txt
2021-02-10 17:50:35.170904 | primary | ----------------------------------------
2021-02-10 17:50:35.170914 | primary | ...Installing setuptools, pip, wheel...done.
2021-02-10 17:50:35.170929 | primary | Traceback (most recent call last):
2021-02-10 17:50:35.170965 | primary |   File "/usr/lib64/python3.6/runpy.py", line 193, in _run_module_as_main
2021-02-10 17:50:35.171905 | primary |     "__main__", mod_spec)
2021-02-10 17:50:35.171937 | primary |   File "/usr/lib64/python3.6/runpy.py", line 85, in _run_code
2021-02-10 17:50:35.172094 | primary |     exec(code, run_globals)
2021-02-10 17:50:35.172125 | primary |   File "/usr/lib/python3.6/site-packages/virtualenv.py", line 2333, in <module>
2021-02-10 17:50:35.173412 | primary |     main()
2021-02-10 17:50:35.173453 | primary |   File "/usr/lib/python3.6/site-packages/virtualenv.py", line 714, in main
2021-02-10 17:50:35.173898 | primary |     symlink=options.symlink)
2021-02-10 17:50:35.173919 | primary |   File "/usr/lib/python3.6/site-packages/virtualenv.py", line 949, in create_environment
2021-02-10 17:50:35.174526 | primary |     download=download,
2021-02-10 17:50:35.174553 | primary |   File "/usr/lib/python3.6/site-packages/virtualenv.py", line 905, in install_wheel
2021-02-10 17:50:35.175056 | primary |     call_subprocess(cmd, show_stdout=False, extra_env=env, stdin=SCRIPT)
2021-02-10 17:50:35.175089 | primary |   File "/usr/lib/python3.6/site-packages/virtualenv.py", line 798, in call_subprocess
2021-02-10 17:50:35.175550 | primary |     % (cmd_desc, proc.returncode))
2021-02-10 17:50:35.175608 | primary | OSError: Command /home/zuul/workspace/.quickstart/bin/python3 - setuptools pip wheel failed with error code 2

https://storage.gra.cloud.ovh.net/v1/AUTH_dcaab5e32b234d56b626f72581e3644c/zuul_opendev_logs_c21/774072/1/check/tripleo-ci-centos-8-undercloud-containers/c21b982/job-output.txt