Build failed. https://zuul.opendev.org/t/openstack/buildset/ec71cdda82144799b0efaec5f86cd365 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/0ccc5546afdd4004bfbd94f008d8fa88 : SUCCESS in 4m 43s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/d10b57a3e9d744ea81373230b2a1bec5 : SUCCESS in 4m 37s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/267d718023954e53b754160e180ce9e0 : FAILURE in 4m 14s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/cecd301742174530b66d29d0e71f8d33 : FAILURE in 4m 22s