Forgot build step

lib/index.js

@@ -19,7 +19,7 @@ module.exports = function (name, streams) {
   * combined stream, so we don't need `gulp-plumber` in our actual pipeline.
   */
 	var plumberStream = plumber(function (err) {
-		logger.error(err.toString());
+		logger.error(err);
 		/* Ensure that the task finishes, so as to not break `gulp.watch`. */
 		this.emit("end");
 	});