[Openstack-stable-maint] Stable check of openstack/oslo.messaging for ref refs/heads/stable/train failed

Build failed. https://zuul.opendev.org/t/openstack/buildset/8127b590df6d417983b70e7d2d825d... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/f56be86706d3460aa41c856ea205b740 : SUCCESS in 5m 14s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/37a7b15d29c449048d945fa9c5ad513e : SUCCESS in 6m 06s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/6fb8ce29ea6c4d6d816a1fdf6017ae3c : SUCCESS in 6m 59s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/b2ad58b00d0d4b0aa1326141b5bcd0f1 : FAILURE in 4m 47s