Build failed. https://zuul.opendev.org/t/openstack/buildset/640be01d2aa74e2f8271e2f20f6b4e1a - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/7e3b83ed619742ab921021ea12a4bd2f : SUCCESS in 2m 59s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/1ed85ee22601465b94bc13d80ba65dfb : SUCCESS in 5m 00s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/d65df657cc454c0280beafe493e3fc94 : SUCCESS in 6m 24s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/258f5e8f531343768333c6981ce09142 : FAILURE in 2m 49s