[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/48564279287743c6831a7d24c7aec267 : SUCCESS in 8m 37s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/c2e3b837335145048fd290a7dbb1485f : FAILURE in 7m 45s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/032ade89c62c4722b50892b07b10004f : FAILURE in 7m 54s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/e9d68bf1469f4889ba5fe7255a73c397 : FAILURE in 8m 22s