[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/eae1284f912e4d1ebc35d783010995... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/3335b01a14b547f4877d9b9ba3cf26e8 : SUCCESS in 3m 02s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/948b7a295fbc4fadba017a5ba4d85c50 : FAILURE in 3m 14s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/fc2af6b616eb4d7195e88aef1c1b14a1 : SUCCESS in 3m 34s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/e5c7f6d68b0e41e18abe0fa274d210ae : FAILURE in 2m 54s