[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/4d583b308aec4cedb25a785e3bc082... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/dd6f6ae2b09c4f798870a01098eb3dfe : SUCCESS in 3m 45s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/b154965c1f914fc9b19709f6d0cce783 : FAILURE in 3m 30s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/0dba735c680543ee806889e8da0add2c : SUCCESS in 3m 33s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/5c063bff093c479cbae17bc387fb2b8a : SUCCESS in 4m 01s