[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/042331f5f82f48b591305151a21875... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/1fb0bade1ecd4dac94bfed50af592119 : SUCCESS in 4m 17s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/583f451fe9dd4fee9f7b67784cad0640 : FAILURE in 3m 04s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/b28df0a363d64e72b883df6ff8a05a40 : SUCCESS in 3m 56s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/a4a723a2a9e04933a65e3bf4bf2df456 : SUCCESS in 4m 01s