[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/ad90985a57544e7bac4102d6c3f4ed... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/2dab2c8ec98441dfb92490a9db6b619c : SUCCESS in 5m 14s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/2f5452efb9c147a7a5073f08b39f2368 : FAILURE in 5m 01s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/8a7843dbda64447c92078e4d8ca90c41 : SUCCESS in 5m 39s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/3e3e07a8a04e4d0389c330a5403754c4 : SUCCESS in 6m 08s