[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/9936e4aa1ae84608a7c80df8f79af1... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/9110d5168aae443ea16f62a82cc95428 : SUCCESS in 3m 28s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/1b9769b1f86e46189cbf835fbe45e0d6 : FAILURE in 3m 28s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/6f6f32d64a0d4aaeb251d93c7fe1a5e0 : SUCCESS in 3m 36s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/8b715f9d741941fbaa256ba1f2688168 : SUCCESS in 3m 56s