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

Build failed. https://zuul.opendev.org/t/openstack/buildset/352682601d68472fba851047373394... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/c721b65aa2f041bdbadf66b8f38629e0 : SUCCESS in 6m 09s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/00c0ab5846574eb3a3499cf0402f4f1a : SUCCESS in 5m 24s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/b577a2c059b24b109ffdc78562d0e90e : SUCCESS in 4m 50s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/ef9dc74fb0154f1e93a65b9cf848f735 : FAILURE in 5m 38s