Build failed. https://zuul.opendev.org/t/openstack/buildset/3123d07687774dd4bd4813d5af7d50b0 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/9f5eefe1ce7647dc89dddbcff4f920be : SUCCESS in 3m 48s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/d2bc491eeb0a4bf9bb2d67cb356275f4 : SUCCESS in 4m 41s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/294fc84e928a4ed19eb4a95c0e82ccb0 : SUCCESS in 4m 46s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/44fd69f5517f4c70909c136ce33a6b3b : FAILURE in 3m 59s