{"ast_node_type":"variable","tokens":[{"end":75,"kind":"keyword","start":0,"text":"let"}]}
    let mut maybe_init = MaybeInitializedPlaces::new(tcx, body, &move_data)
    let move_data = MoveData::gather_moves(body, tcx, |_| true);
        .iterate_to_fixpoint(tcx, body, None)