[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/2531dc9a56e742598024571ce481c1... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/0462879fa7c3420c9c119332528b3c09 : SUCCESS in 3m 24s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/55a7a24fe18c4b638f46df3c9977aedf : FAILURE in 3m 35s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/4c658e0c6b214ffaa5f7673b751cdd92 : SUCCESS in 3m 36s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/90ace9153557418e962b2991fd0fefab : SUCCESS in 3m 27s