[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/a69952d987fb4a9a849a1f44373d3f... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/28187b901d5b4a98928a645deb9fdfd3 : SUCCESS in 3m 47s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/02f4867b687446449bb6a386a6b510ed : FAILURE in 3m 42s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/41109b692f414562970d7f2139d57e6f : SUCCESS in 3m 29s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/c4c94a1c7dd84bad9290c74f994e8bf0 : SUCCESS in 3m 30s