Build failed. https://zuul.opendev.org/t/openstack/buildset/d4a8b48e3ff243e1b3cbc5c175fc4cef - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/1660ebfece824996921a54a33ebbe784 : SUCCESS in 3m 03s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/73a49d27ca384cb78cc44fd82c0910c7 : SUCCESS in 4m 23s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/48fe3c58c00048809ebc27062bc4bfcf : FAILURE in 2m 50s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/73ecdda0560244efb4d12f38581b2d8d : FAILURE in 2m 47s