[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/d80df2edf97b4be69720ca677f967f... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/be43ef5086b240cd8974350d4dfa86bb : SUCCESS in 3m 51s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/52384ef85bfc42fcb54295c911d43fb5 : SUCCESS in 6m 10s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/12c98d8d4692407d8d2da4eceee73b0d : SUCCESS in 7m 19s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/5a34a50d8b924e4390836ec00778ebad : FAILURE in 5m 45s