Dump parsing from Reader

[rye]

From the rust-csv readme, this looks like some syntax we can use.

fn example() -> Result<(), Box<Error>> {
    // Build the CSV reader and iterate over each record.
    let mut rdr = csv::Reader::from_reader(io::stdin());
    for result in rdr.records() {
        // The iterator yields Result<StringRecord, Error>, so we check the
        // error here.
        let record = result?;
        println!("{:?}", record);
    }
    Ok(())
}

Note the ? is the carrier operator, which is syntactic sugar for the try! macro. Functionally, the let record = result? would return early if there was an error.