Build failed. https://zuul.opendev.org/t/openstack/buildset/640e236b338745e7a0ba0a5aab370d1c - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/2b0d1139da994448b7368fd23777bcb4 : SUCCESS in 3m 09s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/af23550d09564960ae8e8d35d7fc6d4c : SUCCESS in 3m 14s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/c16ca48a4f994a2e9407a6409e672f36 : SUCCESS in 3m 40s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/f0bebb040b6d458a9d68c89b26bdb9c7 : FAILURE in 2m 33s