[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/5a1d7a5a6c204012afcd912effbf28... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/a975c133c42043f494a151eec41074e3 : SUCCESS in 2m 54s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/25d37b7bc41a49239a7e58646229ac4b : FAILURE in 2m 58s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/ba7e884c0fa243b5ba9bab8f55d5ef6a : SUCCESS in 3m 07s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/461449294fb84767bb4900828344eafc : FAILURE in 3m 10s