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

Build failed. https://zuul.opendev.org/t/openstack/buildset/a82939a59b6e4a4aaf5995f5c5f08d... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/cb0bde6ce4cd4d949f9d76081b2595d9 : SUCCESS in 5m 02s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/ebca0c6875034c6799b79b2289086fb3 : FAILURE in 4m 25s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/4ee6a8764888432cb765d9f303456a09 : SUCCESS in 3m 12s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/7642ab68c4d44ef8801fbc41a3e1d28d : FAILURE in 2m 58s