Build failed. https://zuul.opendev.org/t/openstack/buildset/ee5a50964a544799a3de08665d57a1be - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/48be215e14b7481bb02de8e3e03f541b : SUCCESS in 4m 08s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/8747652f705c4722b08995a6067c2b43 : FAILURE in 4m 32s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/55ac0c2838144956a3bbd4fdb91d8bdb : SUCCESS in 3m 40s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/3a3430b19aa64e57ae16b61189c51dfa : SUCCESS in 4m 09s