[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/32196f51ca274797a8df48788cda66... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/caba234547e24054a524766c80c19326 : SUCCESS in 3m 48s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/9b020fe5fd484c53b5cc0e1c58aac58b : FAILURE in 3m 25s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/f084d96e426f4280aeb53db10b0c7552 : SUCCESS in 3m 13s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/95d160adaaf24896820af90148777352 : SUCCESS in 3m 22s