[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/ab4c5a627ecb4ca09512be07965c69f7 : SUCCESS in 6m 58s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/74e742da035a4789a2ee75cdae3a9b35 : FAILURE in 6m 06s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/b2191e591b6e4fd3b36f72c592f0c4dc : FAILURE in 6m 35s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/a9c68926f9a24c8c9ee9b170feb41adf : FAILURE in 7m 19s