[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/f7e2f37bbb2e49d2b82de83e6618b25e : SUCCESS in 7m 55s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/4db32d195f2b4588aea3c70a8db84d58 : FAILURE in 6m 02s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/f62bb2e659f340239961ecdc1964d4aa : FAILURE in 8m 05s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/f53ccb5428a0455eb233408cfd25f227 : FAILURE in 7m 44s