{"ast_node_type":"variable","tokens":[{"end":68,"kind":"keyword","start":0,"text":"let"}]}
        let bin_op_internal = bin_op.internal(&mut *tables, cx.tcx);
        let lhs_internal = lhs.internal(&mut *tables, cx.tcx);
        cx.binop_ty(bin_op_internal, rhs_internal, lhs_internal).stable(&mut *tables, cx)