[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/e8e63597146249769cf8bae42332df... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/7c04be73cc7c4eb19659b455ff2f4e0e : SUCCESS in 3m 37s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/7bf433e320c6427cb9e4b2266820d687 : FAILURE in 4m 41s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/ab4c7d817c594340b5156b7ceb1f82f5 : SUCCESS in 3m 30s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/b6952389371749f9b7129f4309d3708c : SUCCESS in 4m 10s