Build failed. https://zuul.opendev.org/t/openstack/buildset/7150a1ccf5f1461a90ec3e11bb9cd5fa - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/28f8072cbe1a41aeb14efe61be710f0d : SUCCESS in 4m 47s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/bb05ec58f3e246739cab9b535a424b60 : SUCCESS in 4m 46s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/6e5f7aa418cb4665a7f6c6ac20b8ee1d : SUCCESS in 3m 11s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/3645dc99e7e84ba3b480142758e5569c : FAILURE in 2m 35s