[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/60e8f7a8adaf4e70b4bb82786896d0... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/76ef06e8b7f047968235cff9c3d83d84 : SUCCESS in 6m 42s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/bffbc9276bba4a7f9716c7bd56def73b : SUCCESS in 6m 41s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/a2b05158a43740d2bb7270411fe3a8ae : SUCCESS in 7m 05s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/5d88febfb252461f96d67bb81b4ccbfd : FAILURE in 6m 02s