Build failed. https://zuul.opendev.org/t/openstack/buildset/555bdcfc1d59426e8614c0f9160bf4dd - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/db3351a67284407ca1e5645cd5592a13 : SUCCESS in 4m 09s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/50d3a6cd4dea4c8b9ae69c62f5cac4ee : SUCCESS in 3m 14s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/621861b08a5145b8a0954ac742170c0c : FAILURE in 4m 32s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/0b0ca60532094daf84f106322dfebff1 : FAILURE in 3m 06s