rust/tests/target/chains-no-overlow-2.rs

// rustfmt-chains_overflow_last: false

fn main() {
    reader.lines()
          .map(|line| line.expect("Failed getting line"))
          .take_while(|line| line_regex.is_match(&line))
          .filter_map(|line| {
              regex.captures_iter(&line)
                   .next()
                   .map(|capture| {
                       (capture.at(1).expect("Couldn\'t unwrap capture").to_owned(),
                        capture.at(2).expect("Couldn\'t unwrap capture").to_owned())
                   })
          })
          .collect();
}