[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/a40abab29ce54e77880ae83702192c... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/b50e397fb6e14535b14b460f9044f167 : SUCCESS in 4m 39s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/837bcec350d147588b813dd29c191cac : SUCCESS in 4m 21s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/7c59adf0264c421ca1683e20b5da544a : SUCCESS in 3m 37s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/b2e4967a859345a0bb19068ee9f74466 : FAILURE in 4m 33s