[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/33e641b6a74b442e8274b4835da009... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/4e5c82663d58487c80adee03995d02e7 : SUCCESS in 3m 51s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/9dd799d24fab4822ace8d3d687f93909 : FAILURE in 3m 50s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/eb87c005a2364a1390206a7f437bf9c8 : SUCCESS in 3m 43s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/024e1134146e40ca94e120156f16de2d : SUCCESS in 4m 20s