429 impl From<UnrecognizedReprError> for FromAttrsError {
430     fn from(_err: UnrecognizedReprError) -> FromAttrsError {  in from()
518 struct UnrecognizedReprError;  struct
523     ) -> Result<Vec<Spanned<RawRepr>>, Spanned<UnrecognizedReprError>> {  in from_attrs()  argument
537                                     UnrecognizedReprError,  in from_attrs()
557     fn from_meta(meta: &Meta) -> Result<RawRepr, UnrecognizedReprError> {  in from_meta()  argument
561             _ => return Err(UnrecognizedReprError),  in from_meta()
564         let ident = path.get_ident().ok_or(UnrecognizedReprError)?;  in from_meta()
570                 .map_err(|_| UnrecognizedReprError)  in from_meta()
575                         Err(UnrecognizedReprError)  in from_meta()
600             _ => return Err(UnrecognizedReprError),  in from_meta()