[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/3cdf6c7e093d4082a8f269bb062aca... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/864b2f18d6a347bbbc80bd971c071324 : SUCCESS in 3m 37s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/ad15e4fe81c04b37966ccbab059ded18 : FAILURE in 3m 41s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/e48180c4700b45c486ddf6a14d50cc09 : SUCCESS in 3m 32s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/df43978fc1bd4f75bcf3888280119a05 : SUCCESS in 4m 24s