Build failed. https://zuul.opendev.org/t/openstack/buildset/0770e550910d4625bdc6fb61014f12d3 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/501ab55941b14d55ba16d8eafd2f9813 : SUCCESS in 5m 52s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/1a68a3cd3dd24b69a5fc6d59f82d8c13 : SUCCESS in 12m 02s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/7109d1e0c0144135940553a9d7479572 : FAILURE in 15m 56s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/483e3fc340c9449787a683bc2cfe9ec9 : SUCCESS in 11m 32s