[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/892421e432e84a2cba0d81cfd27d75... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/bcccb4a97c9f41f5be4ea809baee8da5 : SUCCESS in 3m 52s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/8f209f05035c43fbb795e37317eac2ba : FAILURE in 2m 49s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/2985c2ae7dc9486ba2c45222418b1fdf : SUCCESS in 3m 33s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/208240e97a3047d69c9e6b16e42949bd : SUCCESS in 3m 38s