[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/9472205d860b4a129013888865255b... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/cdb62ae0c0404785b45e9eb8cde43ded : SUCCESS in 3m 54s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/549c35781f0946ffa8d6b58419fcec4d : FAILURE in 3m 04s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/1e9105c8fde148fbb9fe61fe2271be51 : SUCCESS in 3m 51s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/01b81a1b7a6e4f49bf2048936d486b48 : SUCCESS in 3m 57s