[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/467d5d9894b84527949c178caa8786... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/7db5549600fd4268813fc54e4870842a : SUCCESS in 3m 13s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/655952bfbb364f0db938b174602bb79d : SUCCESS in 2m 50s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/b45c1704d1624a4d8251bb6c93e07ca9 : SUCCESS in 2m 50s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/5e543b2f5ac44f539617591524c0addf : FAILURE in 2m 59s