[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/84b7d1ca4e104301b8cd4ec2d4c770... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/bb973111c8af49629d4f9a43e2641dfd : SUCCESS in 4m 01s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/82b79eb0557c4ff199426c1e3efeaa79 : FAILURE in 5m 29s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/c009bc53133a4391af63791158bcc78a : SUCCESS in 4m 02s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/72d7a884d4804bf0812f15cc31c42f06 : SUCCESS in 4m 09s