Build failed. https://zuul.opendev.org/t/openstack/buildset/d88a1604de9e4f6bad87dd9e1d7301e5 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/c3b2be8ae25d4fa7a7087ee292791bf8 : SUCCESS in 3m 29s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/6ec02b8127964b29b4acc378b7c8ae08 : SUCCESS in 4m 49s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/be2239b6a8894464874f197d93145fe7 : FAILURE in 3m 12s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/7714b30291a04825a769267ba55df627 : FAILURE in 2m 59s