Build failed. https://zuul.opendev.org/t/openstack/buildset/545a1952d7394e0aa8bc9a5a17c740d8 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/173877a12ef44e92b5e406548cbfdbf8 : FAILURE in 3m 38s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/9751f9163b75488e857b34038869fa55 : FAILURE in 3m 50s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/3915dae7b03e478ca7a7cc20951ea1fd : FAILURE in 3m 32s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/0795b9e9296c43d28a70e20b660fdf5b : FAILURE in 4m 22s