[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/0eec57bb33514274b65385162b1438... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/39a5848d0c0b47f7a90faf1d11eb6fbe : SUCCESS in 3m 19s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/98c52369283d41cfb13196d32c66f1ac : FAILURE in 3m 25s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/ec64cf1c55334752b2427172651177a8 : SUCCESS in 2m 58s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/27d08f8117524f3b8e4178d04dfef877 : SUCCESS in 3m 13s