[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/6e60fc201d4d42888b30504d9cd17c... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/7a2d011e59654a978958b71fa3483d25 : SUCCESS in 3m 26s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/941a359c02eb44aa9aa82ae8268d2d37 : FAILURE in 3m 20s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/30eb351167264383adfab48e06877326 : SUCCESS in 3m 59s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/d7af83aed7be4ed58978a9fe0cfbba03 : FAILURE in 3m 08s