fix: add rust-fix annotation to unckd. duration subtr. lint test

Author: nfejzic

tests/ui/unchecked_duration_subtraction.fixed

@@ -0,0 +1,17 @@
+// 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();;
+}

tests/ui/unchecked_duration_subtraction.rs

@@ -1,3 +1,4 @@
+// run-rustfix
 #![warn(clippy::unchecked_duration_subtraction)]
 
 use std::time::{Duration, Instant};

tests/ui/unchecked_duration_subtraction.stderr

@@ -1,25 +1,25 @@
 error: unchecked subtraction of a 'Duration' from an 'Instant'
-  --> $DIR/unchecked_duration_subtraction.rs:9:13
+  --> $DIR/unchecked_duration_subtraction.rs:10:13
    |
 LL |     let _ = _first - second;
    |             ^^^^^^^^^^^^^^^ help: try: `_first.checked_sub(second).unwrap();`
    |
    = note: `-D clippy::unchecked-duration-subtraction` implied by `-D warnings`
 
 error: unchecked subtraction of a 'Duration' from an 'Instant'
-  --> $DIR/unchecked_duration_subtraction.rs:11:13
+  --> $DIR/unchecked_duration_subtraction.rs:12:13
    |
 LL |     let _ = Instant::now() - Duration::from_secs(5);
    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `Instant::now().checked_sub(Duration::from_secs(5)).unwrap();`
 
 error: unchecked subtraction of a 'Duration' from an 'Instant'
-  --> $DIR/unchecked_duration_subtraction.rs:13:13
+  --> $DIR/unchecked_duration_subtraction.rs:14:13
    |
 LL |     let _ = _first - Duration::from_secs(5);
    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `_first.checked_sub(Duration::from_secs(5)).unwrap();`
 
 error: unchecked subtraction of a 'Duration' from an 'Instant'
-  --> $DIR/unchecked_duration_subtraction.rs:15:13
+  --> $DIR/unchecked_duration_subtraction.rs:16:13
    |
 LL |     let _ = Instant::now() - second;
    |             ^^^^^^^^^^^^^^^^^^^^^^^ help: try: `Instant::now().checked_sub(second).unwrap();`