[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/90a55bd305ae4f799fc37d6da64374... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/eeba35b76fc041f1a4d71057b1388035 : SUCCESS in 3m 37s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/6c4a18c66de04e039f84ff3ea8a1724a : FAILURE in 3m 08s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/272d634f50654244b4a0c81001995c1d : SUCCESS in 3m 14s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/b9ee14c539aa4f1ca41b26da06a3fd66 : FAILURE in 3m 42s