{"ast_node_type":"other","tokens":[{"end":43,"kind":"keyword","start":0,"text":"Expr::UnaryOp"}]}
            Expr::UnaryOp { expr, op } => {
            &Expr::Box { expr } => self.infer_expr_box(expr, expected),
                let inner_ty = self.infer_expr_inner(*expr, &Expectation::none(), ExprIsRead::Yes);