[Openstack-stable-maint] Stable check of openstack/keystone for ref refs/heads/stable/train failed

Build failed. - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/dafbacf494294608b5996d8f70b63266 : SUCCESS in 18m 06s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/cc2fedebaabc442eb81cc710c9cb23d3 : SUCCESS in 21m 40s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/1a2ce3488a46449a8a057a7f30486566 : SUCCESS in 24m 28s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/b0f97abb621e4faca8c483613348b74d : TIMED_OUT in 41m 05s