[Openstack-stable-maint] Stable check of openstack/oslo.versionedobjects for ref refs/heads/stable/train failed

Build failed. https://zuul.opendev.org/t/openstack/buildset/37273a207f974a729800893ccb692d... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/150ab9fc0cfe461f9b3756467588152b : SUCCESS in 7m 30s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/8cbe254ded204f2e9dd5071db9ec72fb : FAILURE in 3m 28s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/ff211d8173c24d8c8f34cb48746cd5f6 : SUCCESS in 3m 21s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/0a6ee751b05b469a836c8fa269b4f9c0 : SUCCESS in 4m 03s