[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/cc5a510935f24b08b42b7070cfa81d... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/e25ba404ba7645faba353bb674ddc523 : SUCCESS in 4m 47s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/4fa06c8e39e84a5db8a1b6e04fe12ecc : FAILURE in 3m 22s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/d10d8af4afe442e5ab8b6814474c61cb : SUCCESS in 3m 44s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/c9ab5af413f64f7696440c3e18001b24 : SUCCESS in 3m 37s