[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/22a9297ebb8e49aebaf1171693b6639f : SUCCESS in 6m 46s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/da521850c963443e88d523a6fcd9e284 : FAILURE in 5m 55s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/0fb8350e9ab3440d8623e12b51e8745f : FAILURE in 8m 43s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/103f3e2b12bc49fc85555bba4eea5603 : FAILURE in 7m 47s