Build failed. https://zuul.opendev.org/t/openstack/buildset/8cff9a438158446eaeacdb3a31b6addb - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/045e9119cda54289ac35479ce9158cec : SUCCESS in 4m 23s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/b9ddcb0a1e2d41b587fd1dafbcea0009 : SUCCESS in 4m 30s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/2644d8abb7ab41b89298bc3144124b83 : SUCCESS in 3m 53s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/fc9b019f2d4c4e5ab74209c64cff4df5 : FAILURE in 3m 12s