[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/1dcefdbb39244cc1833172b5fa4904b1 : SUCCESS in 8m 19s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/7582a6e0b7c54721b08c01cfa23724e4 : FAILURE in 7m 21s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/bd244615b52d4edeb90e841cd4b9b20a : FAILURE in 8m 28s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/a5e1b0494b0d4c8e941dea00f84b9611 : FAILURE in 7m 59s