Build failed. https://zuul.opendev.org/t/openstack/buildset/fcfcfd8d23644002b9150dcdc7feaf4b - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/93e037b1a3214098b86b4f74cdfe19da : SUCCESS in 2m 48s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/a213824425fe471580101a5d5d2046c5 : SUCCESS in 3m 14s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/b39e902b1ff54b968e020f41764a4a51 : FAILURE in 3m 00s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/d2a40391323b4695801aa7314ea2cb61 : FAILURE in 2m 45s