[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/fd4c991934714b7f8e646162746ea7... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/d7cab28c205f49dba26bb18eace3ddcf : SUCCESS in 4m 36s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/18fef3bfb8c042c087411ac4d95e0ba7 : FAILURE in 3m 23s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/7db6b5ea3c9846819474e30c5062abf1 : SUCCESS in 3m 33s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/5dfbaad6625b4af68b696ce1c2f6e82f : SUCCESS in 3m 44s