{"ast_node_type":"variable","tokens":[{"end":66,"kind":"keyword","start":0,"text":"let"}]}
            let from_residual_expr = self.wrap_in_try_constructor(
            let residual_expr = self.expr_ident_mut(try_span, residual_ident, residual_local_nid);
                hir::LangItem::TryTraitFromResidual,