[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/c8640518728c48878893f4591a117e... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/8a1530f190464b8f86b8878016475800 : SUCCESS in 3m 57s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/6bc02bb00cfb47ff84ce11c5c1a9f0f9 : FAILURE in 3m 38s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/17e9cda06c8a412582182f91d15d9ffc : SUCCESS in 3m 26s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/bc9ce854a45d418db3d9019bbb54261f : SUCCESS in 4m 27s