[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/9b89bc3544ec4253badbeefedd2cbb... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/ed6094cdf68347e5aec3253e62679cd3 : SUCCESS in 2m 53s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/7f86fce6538743ada058a613dfc893ed : FAILURE in 3m 51s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/301f3c2afde14175ba7b426cc01598ea : SUCCESS in 3m 02s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/5c99658f632d4d4bb1b216b695dd24b6 : FAILURE in 3m 58s