Build failed. https://zuul.opendev.org/t/openstack/buildset/3fd232055e9440f6ab238acc208891ac - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/b5fd733746464d5b89f0cb2c4f9753f4 : SUCCESS in 4m 52s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/f540d7e0e9734232a3d7a2e176deb57e : FAILURE in 6m 14s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/74a172ed080f4536809032acf14909fa : SUCCESS in 6m 19s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/fb7e2f1d3b4f4ebd8a9e7c4ef7245fa8 : SUCCESS in 7m 14s