[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/5fab13b1498d40838e2fa80a1f56e5... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/490498a614a143b3b118eb614ebd8c3e : SUCCESS in 4m 50s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/23468f1acc704ef3995d4919d26d74a1 : SUCCESS in 9m 06s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/df724f6049904068992496b669321bb2 : SUCCESS in 7m 36s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/de5ff5fa0c8341a797b1b989fb3c0f0d : FAILURE in 6m 55s