[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/f687b084cf494c8d8548a81b4b59e1... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/b7fe7cf74c9a4cf1a8530e89a9fb266d : SUCCESS in 3m 32s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/536c05e2a45f402794cf9ac7e9673600 : FAILURE in 2m 49s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/8d9bd9c694164366970ef3c85e0afb3d : SUCCESS in 3m 05s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/a8539850b2ec4aff92cd3f1b7c110daf : SUCCESS in 4m 48s