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

Build failed. - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/661e8f0fb26f4b3b8f265e28d2ff7f53 : SUCCESS in 4m 07s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/ef9c191961f54560b1b49c08cfc0c644 : FAILURE in 4m 15s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/12f52b613b274f1e8eb6772452fcc9e2 : SUCCESS in 7m 13s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/bea4aa3570bd42c1a7823180387eddf9 : SUCCESS in 10m 37s