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

Build failed. - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/a6e7203b73314a95be9a65e49c405c9d : SUCCESS in 5m 30s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/959b1140f290411faeb942dcc7d2d2fb : SUCCESS in 5m 31s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/adab58c9bfda4bcf95a4ba423180acaa : SUCCESS in 6m 42s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/a27d028897db41a5bcb4493fabdaff81 : FAILURE in 9m 10s