(test) mixin calls throw an error now, if no patterns match
(test) mixin calls throw an error now, if no patterns match

1ec5/carto,pnorman/carto,CartoDB/carto,madeinqc/carto,midnightcomm/carto,stefanklug/carto,mapbox/carto,tomhughes/carto,CartoDB/carto,whitelynx/carto,gravitystorm/carto,clhenrick/carto