[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/71091cf9569e45138d4daecff7850f... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/378c954c9555469f917f58dbed21875a : SUCCESS in 3m 27s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/b253cb6c7166458eb9b1958438c627db : FAILURE in 4m 17s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/e7b2b1adf23d40fb8244e4cd95eb50a2 : SUCCESS in 3m 56s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/9376a533ec3b442db2f8eeacb3040d6b : FAILURE in 3m 57s