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

Build failed. https://zuul.opendev.org/t/openstack/buildset/f13c5dbd232c4aefb45e9b343817cf... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/fb149154299f4aeeb8f49299db262aba : SUCCESS in 4m 28s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/a4dd553895534c34a5bf5d0742d95329 : TIMED_OUT in 40m 43s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/325580e924a74172aaa3d77b4129f7c8 : SUCCESS in 4m 32s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/19ce8adfbd9349bbbd923455cd98d80e : SUCCESS in 4m 33s