[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/8febbf2e2b1a4c5bb314da15a0df48... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/e415c9b1e7f84b5693c9ecc961f415be : SUCCESS in 3m 37s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/995d72649f244c94b197a54b6cf351cd : FAILURE in 3m 32s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/d4ebfa9e2776433ca76372879ce3b43e : SUCCESS in 5m 08s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/7f8ff3d996434b9da93a08beb90ef4b7 : SUCCESS in 4m 46s