[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/27ef4f5627374a029345f42b66d08a... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/7a9582faf3a4441a991871fcf5905134 : SUCCESS in 2m 57s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/4b9e8cab40734881bab7ebbfa069b495 : FAILURE in 2m 30s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/85e52537a6864dceadb9987646dab325 : SUCCESS in 2m 58s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/08ab45e0b2a5474c8376a511535fa1ab : FAILURE in 3m 29s