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// run-rustfix
#![warn(clippy::unchecked_duration_subtraction)]
use std::time::{Duration, Instant};
fn main() {
let _first = Instant::now();
let second = Duration::from_secs(3);
let _ = _first.checked_sub(second).unwrap();
let _ = Instant::now().checked_sub(Duration::from_secs(5)).unwrap();
let _ = _first.checked_sub(Duration::from_secs(5)).unwrap();
let _ = Instant::now().checked_sub(second).unwrap();
}
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