// A short, single-line view of `s`.
fn concise_str(s: &str) -> String {
if s.contains('\n') {
- return format!("{}...", &s[..s.find('\n').unwrap()]);
+ return format!("{}...", s.lines().next().expect("Impossible! We just found a newline"));
}
if s.len() > 70 {
return format!("{} ... {}", &s[..50], &s[s.len()-20..]);