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

Build failed. https://zuul.opendev.org/t/openstack/buildset/8dcc05a110c143f68be920e060a5f2... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/10654d68f7f04fe89f771224734958d0 : SUCCESS in 6m 18s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/48fce824b5f04162adfc2216fe268152 : SUCCESS in 4m 47s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/8adc7d00d97849d89aab9a5eb0dcef07 : SUCCESS in 4m 58s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/00b3d67716bb49868c6ef3a8be7a7ac0 : FAILURE in 4m 34s