gistfile1.txt

        let (ok, err): (
            Vec<Result<String, (String, Vec<String>)>>,
            Vec<Result<String, (String, Vec<String>)>>)  = attr_instantiations
            .into_iter()
            .partition(|x| x.is_ok());

        let ok_ret: Vec<String> = ok.into_iter().map(|x| x.unwrap()).collect();
        let err_ret: Vec<(String, Vec<String>)> = err.into_iter().map(|x| x.unwrap_err()).collect();

        return (
            ok_ret,
            err_ret
        )