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

Build failed. https://zuul.opendev.org/t/openstack/buildset/78cd6abc04814c29b805c67476d9f8... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/e05fda456ef24eff9c231a35290f50c5 : SUCCESS in 3m 24s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/382688e4779d43c89503e7c04e40ccb3 : FAILURE in 3m 26s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/3e3ef8cc85504770a5056f1b143ac083 : SUCCESS in 4m 31s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/96b6c9ba036c49c5b938cd70a5a4f40a : SUCCESS in 3m 40s