Build failed. https://zuul.opendev.org/t/openstack/buildset/be0b1ae4f274415a8a53591165ffc3cf - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/82321431b6d0465e9f5c48efd1b0836b : FAILURE in 4m 36s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/df416e23852f4f18bd27406e1357afa4 : SUCCESS in 3m 49s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/077372aff5a546bb8d3b6e95a7d40d90 : SUCCESS in 4m 20s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/8f2d889a4627441b93dabaeb6684766f : SUCCESS in 3m 36s