When performing this import ```import scala.collection.mutable._``` in the header of a given script ammonite crashes with this error: ``` type mismatch found : (ammonite.$file.myscript_2.$routesOuter.type, scala.collection.mutable.Map[String,String], scala.collection.mutable.Seq[String]) => ammonite.main.Router.Result[Any] required: (ammonite.$file.myscript_2.$routesOuter.type, scala.collection.immutable.Map[String,String], scala.collection.Seq[String]) => ammonite.main.Router.Result[Any] def apply() = ammonite.main.Router.generateRoutes[$routesOuter.type] ``` As a workaround I'm only doing ```import scala.collection.mutable``` and I refer then to mutable.XXX in my script.