TypeError: Cannot convert object to primitive value
at isIterateeCall (/home/travis/build/tgriesser/bookshelf/node_modules/lodash/index.js:3679:25)

See: https://travis-ci.org/tgriesser/bookshelf/jobs/51937726 on bookshelf/bookshelf@999b9cd didn't immediately see what was going wrong, works fine on the rest of the 3.x