Build failed. https://zuul.opendev.org/t/openstack/buildset/d503d29bb4c24983918a3506f4f3d10c - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/1546447baf434f08a91555450c510a09 : SUCCESS in 6m 20s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/4f728d8ed621405ca79be17b9754fa40 : FAILURE in 3m 34s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/fcf85e33f0be4c419ebb055d49a21034 : SUCCESS in 3m 17s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/375be8d44be54daba91694e50f6fc2e4 : SUCCESS in 3m 29s