[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/f6e79bacb0da428f930138facbb0a7... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/53879b26c54c4bf8991c5acdd871318f : SUCCESS in 3m 51s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/6af398dff9094cd4837a3f325f9691f1 : FAILURE in 3m 16s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/2194f08bab7e4c9cbbd9ae8eb2d84fce : SUCCESS in 3m 09s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/175708c3c2184abab0e08c684a50c8ff : FAILURE in 3m 42s