[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/9c585ca1ec144900822a719f4d70bb... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/99251991dd5b4466b667586d68dd12f3 : SUCCESS in 3m 31s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/cfa91ca12e554def8de7b0266728815a : FAILURE in 2m 44s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/983ce3576eaf481d96ec4d9d5ef1560a : SUCCESS in 3m 00s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/cdc0de81557540628e8a2e63d92ce9f2 : FAILURE in 3m 05s