[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/b931e76eb0414255996cf83a71139d... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/eceec4e48d394522a8b56cf63153a40f : SUCCESS in 3m 36s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/3a88433dea514fc3b763a1d6a4806f33 : FAILURE in 3m 46s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/fe238e7ae76046458e1174f27d7c42c8 : SUCCESS in 3m 24s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/34da75b9a8a649c08303ac271c705448 : SUCCESS in 3m 42s