Build failed. https://zuul.opendev.org/t/openstack/buildset/3e922f2c4c364dd98a5c34c38cd77fe1 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/57eda85a77f746e5991ccd4c674f9d36 : SUCCESS in 4m 43s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/28c812bc77d348729cb309ce63fd7978 : SUCCESS in 4m 44s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/97bf6bfda7ed4acaad1473537cf34736 : SUCCESS in 4m 05s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/7c029c496eda4660b946bcfefbc0fa88 : FAILURE in 6m 07s