[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/323b768a150f4624a904164b0daf1d... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/0628b748b4a8491db760aa128370890f : SUCCESS in 3m 49s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/a8f441c25aeb448f8c4797f91bd47074 : FAILURE in 3m 40s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/54a143a2ee884a449a1530c7db3bdb8f : SUCCESS in 3m 21s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/144e521dfd624940bf84db1876df1f2e : SUCCESS in 3m 35s