Build failed. https://zuul.opendev.org/t/openstack/buildset/e7b482d5526c4fd2b7b00d40ff11c678 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/21378d71336d43a8acee11731e20469c : FAILURE in 4m 08s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/f7848afd35aa47558d09cce71ae05289 : SUCCESS in 2m 56s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/a643f5cd5b634cd690123b18819858de : SUCCESS in 2m 50s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/761df0b483b044169d0cdfe9b3b89ec8 : SUCCESS in 3m 18s