Build failed. https://zuul.opendev.org/t/openstack/buildset/c3fa30457b2c4f8b997bbc11887d35e6 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/cc9c5130156f4f96a6b9d5563bb7df4c : SUCCESS in 3m 33s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/8056c3d379114874b0d2f230172be082 : FAILURE in 3m 22s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/bc9c9046ef9e417faf4da89c57605e20 : FAILURE in 3m 16s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/7806fc76173d4ced8cb5282c494d0087 : FAILURE in 3m 39s