[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/39f7f3df88aa415bb6ebea2290b083... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/a6484575a57347c8980469260c4ecec4 : SUCCESS in 3m 25s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/31034c7776e041cfbc67beaa3cfea13f : FAILURE in 6m 10s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/d556100b4b8440139bb76d0e94888b95 : SUCCESS in 3m 39s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/61e291d0e137487d879d07d4e34d4b82 : SUCCESS in 3m 55s