Build failed. https://zuul.opendev.org/t/openstack/buildset/8b4b2c8b99a645e0901bd567b5fa8be3 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/c90091f7bd624194a46cbc74f7a3d1b7 : SUCCESS in 3m 03s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/bf9cafbd1e9f48b797661828eac0227b : SUCCESS in 2m 43s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/ceef6df52a684353b2d3daa63a8157ee : SUCCESS in 2m 31s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/19374b88db4448909344c5208570a8d1 : FAILURE in 2m 49s