[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/5ece5bbde06c4066af45a45e59c18f... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/16d886ec6ac746ceb08c56abed349fef : SUCCESS in 3m 05s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/81ffad665cfb47c6a313827dcabea07b : FAILURE in 3m 20s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/0b024991670442dba3d861a58e23dbdd : SUCCESS in 3m 49s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/f7eb88183f29479992c37e51ed821996 : FAILURE in 3m 51s