[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/99a7ec8a87d44523b458af6e83e99a... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/ebecc6a96c6f4e56950dda256b4deafb : SUCCESS in 4m 29s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/c78650989f404921814710537c87d77c : FAILURE in 2m 54s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/8e3ec675d10849cfa28d881ee0dc49c8 : SUCCESS in 4m 34s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/90409685b25d438db273727be784f9cd : SUCCESS in 3m 45s