Build failed. - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/278119db93094afebdf5770c3561886d : SUCCESS in 4m 38s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/d906effa2e8949e6b386bb4c5d8e56c3 : FAILURE in 3m 04s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/295f9d34d5284480aec99e6b8ad27b1a : FAILURE in 4m 00s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/ddfcb01bc8c14ec7aee888b6e8de3de1 : FAILURE in 3m 04s