{"record":{"id":"d3728f174f57851b","repo":"diesel-rs/diesel","slug":"expected-attribute-name-to-have-no-argument","errorCode":null,"errorMessage":"Expected `#[{attribute_name}]` to have no arguments","messagePattern":"Expected `#\\[(.+?)\\]` to have no arguments","errorType":"exception","errorClass":"syn::Error","httpStatus":null,"severity":"error","filePath":"diesel_table_macro_syntax/src/lib.rs","lineNumber":258,"sourceCode":"    }\n    Ok(None)\n}\n\nfn take_flag(\n    meta: &mut Vec<syn::Attribute>,\n    attribute_name: &'static str,\n) -> Result<bool, syn::Error> {\n    if let Some(index) = meta.iter().position(|m| {\n        m.path()\n            .get_ident()\n            .map(|i| i == attribute_name)\n            .unwrap_or(false)\n    }) {\n        let attribute = meta.remove(index);\n        if matches!(attribute.meta, syn::Meta::Path(_)) {\n            Ok(true)\n        } else {\n            Err(syn::Error::new(\n                attribute.span(),\n                format_args!(\"Expected `#[{attribute_name}]` to have no arguments\"),\n            ))\n        }\n    } else {\n        Ok(false)\n    }\n}\n","sourceCodeStart":240,"sourceCodeEnd":267,"githubUrl":"https://github.com/diesel-rs/diesel/blob/6fa6ed01b24b24248ab2a611698d0a7c6a2e9120/diesel_table_macro_syntax/src/lib.rs#L240-L267","documentation":"Compile-time error from take_flag in diesel_table_macro_syntax, which parses flag attributes like #[table_name] or #[sqlite_name] that must appear as bare paths with no arguments. The guard fires when the flag attribute carries a value or list, e.g. #[macro_use = \"...\"] style forms, since flags only support the argument-free form. Fix: write the attribute without parentheses or `= value`.","triggerScenarios":"Thrown at diesel_table_macro_syntax/src/lib.rs:258 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":["Use the bare attribute path with no arguments","Remove any `= ...` or parenthesized values"],"exampleFix":null,"handlingStrategy":"validation","validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"6fa6ed01b24b24248ab2a611698d0a7c6a2e9120","analyzedAt":"2026-09-07T01:50:13.074Z","contentChangedAt":"2026-09-07T01:50:13.074Z","schemaVersion":2},"datasetVersion":"2026-09-16T09:17:16.951Z"}