Build failed. https://zuul.opendev.org/t/openstack/buildset/0ad01f2dc7b94ace8cb9882413a74abd - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/6441c0ec045748bf9880d50c50982b0a : SUCCESS in 3m 15s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/14ee4d4479f24ca6a725ae9d7c270b40 : SUCCESS in 3m 15s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/39ffb9c5bf404326832176c5cfe7529c : FAILURE in 3m 56s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/207800778d3f4e05b8193cb938ba65c2 : FAILURE in 2m 42s