{"ast_node_type":"other","tokens":[{"end":60,"kind":"keyword","start":0,"text":"cov_mark::hit!(wrap_closure_non_block_expr);"}]}
                cov_mark::hit!(wrap_closure_non_block_expr);
            if let FnType::Closure { wrap_expr: true } = fn_type {
                // `|x| x` becomes `|x| -> T x` which is invalid, so wrap it in a block