sugar-toolkit depends cjson which is an obsolete, unmaintained JSON serializer/deserializer for Python. python-cjson is going to be removed from Fedora. Please replace cjson with another JSON library for Python, e.g. the built-in "json" module or "simplejson" and update your dependencies accordingly.
Already on our todo list for the F-18 cycle, sure we already had bugs for this.
Fixed in F-18+