[Openstack-stable-maint] Stable check of openstack/oslo.middleware for ref refs/heads/stable/train failed

Build failed. - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/19d229c89c7b44e2867508586bac42d0 : SUCCESS in 8m 09s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/a164a030451b40269e15ac2f009817e9 : SUCCESS in 5m 04s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/1c448579c39f4bdaba260f1eedc9e6fa : SUCCESS in 5m 51s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/8923667534e34c9bb49a74b1e2a18e5e : FAILURE in 6m 56s