Build failed. https://zuul.opendev.org/t/openstack/buildset/a80bc516059b4dd28a89331e9d6076b8 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/fb3285052a364f07900920132db6eaa6 : SUCCESS in 3m 25s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/1819786aa9414121acb1e75c4224d6e3 : FAILURE in 2m 40s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/c16bb0ef492c4d74b3036a5dc2d33054 : SUCCESS in 3m 29s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/4636b81677cc49a18ed57a3ade72e241 : SUCCESS in 3m 12s