[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/2af9a25a88fa4cb2bb3dacea405f64... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/f9f26c2dc7e24180966121d02f9ec369 : SUCCESS in 3m 40s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/fa949776f028496a8bf0500fe4021895 : FAILURE in 3m 56s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/3928d4e427264c019ba637325a723bd6 : SUCCESS in 4m 09s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/f8019dcbf05b4ef0be4949131a02f2ef : SUCCESS in 5m 48s