[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/fd6ceea2763d4d2ca5a70d0f2702f8... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/b4de114b92f14b3e9390fb643b4270cf : SUCCESS in 2m 52s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/d3a9155ec1bf42dc92ee05b2e93162d8 : FAILURE in 3m 04s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/e58a46239dca4afea997bc1f0e57d620 : SUCCESS in 2m 58s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/8fbe4424ce544ca69eeedb64780c38fc : FAILURE in 2m 53s