[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/807ae1dc93014dc0bab2cbf8695881... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/d9fc052f8b07483cba5c5dcfaa026b64 : SUCCESS in 4m 24s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/48a56697fb214236b3d5b574560ffdc1 : FAILURE in 4m 10s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/50bb743d839d4546bbf909bb37c213cb : SUCCESS in 3m 26s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/884f92705cc245239c0829cdb2ce5478 : SUCCESS in 4m 11s