[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/9239aac3d06642e0831e3f577ae712... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/f489c92c52684c83b15b1b73a426ae6f : SUCCESS in 4m 27s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/fa3c27d734b14bffb3ec5d94b925b3b9 : SUCCESS in 4m 21s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/fa6b2488ba2c49d59fb300c1f6aa2ed4 : SUCCESS in 4m 43s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/aec418c4ffc54f4099f7e70600eb2ffd : FAILURE in 4m 29s