[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/94b5e2c815474213945eee2f256797... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/56cf06d25a6c46589cb736b9e3df172e : SUCCESS in 3m 20s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/74120681d9e443408c7eb4ec9ba91559 : FAILURE in 4m 15s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/3b6b2992f684463f837ae54185e245bf : SUCCESS in 3m 18s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/f27c2aea984c4c199e64958369a0ed5e : SUCCESS in 3m 09s