[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/b03f877b46324c0092133991b8d088... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/99133dfb248a441382f91ef9f9ccaa89 : SUCCESS in 3m 33s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/c6e34d3a888d4dd396499ded68b9ef83 : FAILURE in 4m 02s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/c379bab7a5594ffa837fd7b219100c05 : SUCCESS in 3m 18s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/ca3d9a7307604e3bb80c4c25b0616acf : SUCCESS in 3m 38s