{"ast_node_type":"import","tokens":[{"end":46,"kind":"keyword","start":0,"text":"use"}]}
        use rustc_middle::ty::cast::CastTy::*;
    fn do_check(&self, fcx: &FnCtxt<'a, 'tcx>) -> Result<CastKind, CastError<'tcx>> {
        use rustc_middle::ty::cast::IntTy::*;