Build failed. https://zuul.opendev.org/t/openstack/buildset/23383243fce94420866aeb1ffd4f7d7a - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/9565a7f9a4ee40afb0e2e8b20ca3d7d7 : SUCCESS in 2m 54s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/88dbd1da36ab491385e71dd528de6c09 : SUCCESS in 4m 25s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/8e081c06480e4840890bbaedcca21fa5 : SUCCESS in 2m 46s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/1d9e294ec1d942a48c47449cf33c015f : FAILURE in 2m 45s