[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/c174c331f6864077bfea054cf2914d... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/ea5311736dbb4bd889ef41277b703b94 : SUCCESS in 3m 45s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/f7d48443f4bc4d529e7f92e7c58b3cb3 : FAILURE in 3m 26s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/a7c18f5995e64833b068619e360ae93b : SUCCESS in 3m 24s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/3584790f2c1e49ed9a25be50fcbade5f : SUCCESS in 3m 40s