[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/9ded4b611571419bbf2d53e8fc4770... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/8b5a062462b9415bb3fa9bfdcb5152d0 : SUCCESS in 3m 08s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/a957963cf85e44cf8807366401399719 : FAILURE in 3m 36s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/d6e381d7c755476894d28eab4e489836 : SUCCESS in 4m 30s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/2d9a644446cc4d74940eaf724a7eadcc : SUCCESS in 3m 56s