[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/f24a90272cb949cb84f060f315dc41... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/bc31077b5e094891a9cffede54bf77e7 : SUCCESS in 3m 24s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/3e0fb3fde05f48a78c0f0b091bfb660b : FAILURE in 2m 40s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/1d4c54d0a35f443fa6fd4e5f06637f10 : SUCCESS in 3m 10s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/f910d79b9dd04f129d7f31b17fa29234 : SUCCESS in 3m 43s