[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/e04c64769bd54df2bab97ff777fb195d : SUCCESS in 8m 00s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/e3404982be9746719116aa8593c76703 : FAILURE in 5m 43s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/1df0e26fc71e4da395462a510dfb913e : FAILURE in 6m 57s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/b6697fa5519e495999eb7fa0f1b9baa0 : FAILURE in 7m 05s