{"ast_node_type":"variable","tokens":[{"end":44,"kind":"keyword","start":0,"text":"let"}]}
    let opt_bad_ty = match final_ty.kind() {
    let final_ty = autoderef_via_deref.final_ty(true);
        ty::Infer(ty::TyVar(_)) | ty::Error(_) => Some(MethodAutoderefBadTy {