Build failed. https://zuul.opendev.org/t/openstack/buildset/12bbb7dd9fea4dc0808c395254519ce4 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/4d9fecd8aea347ef8fe31a99713e96a8 : FAILURE in 6m 28s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/4a33dfd4bc8e4c0cbc8ef238a7484f71 : SUCCESS in 5m 24s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/fecc0250b0804d23be655b01298263ee : SUCCESS in 5m 21s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/fc7e78fcbf0d481695a03d1cf879586b : SUCCESS in 6m 10s