[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/039e31b255a84d868fdced05944832... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/2e3abffc3b554a3c909e8da6ce4bc270 : SUCCESS in 3m 47s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/b1c2e9eade3a4452baf3adf5b6004e64 : FAILURE in 3m 46s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/41c288696283484386a8d58c7efa8f79 : SUCCESS in 4m 12s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/9f8f52f45e2d402b8317836fd18127d5 : SUCCESS in 5m 03s