[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/b900755055e04ca6ae663f66670640... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/0ffe5b21b4bf4633a5ae8020f6fb5969 : SUCCESS in 4m 34s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/f0bed34a649b466eb215df7bfff95bb8 : FAILURE in 3m 29s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/f2e64e57a0b24ad38f66d781c11dc3e7 : SUCCESS in 4m 27s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/f4e79674c9f84ada9a436c251799ed96 : SUCCESS in 6m 06s