Use Instant::elapsed

src/cursor.rs

@@ -145,7 +145,7 @@ impl CursorState {
                     return None;
                 }
 
-                let mut millis = self.start_time.duration_since(Instant::now()).as_millis() as u32;
+                let mut millis = self.start_time.elapsed().as_millis() as u32;
                 let animation_length_ms = nearest_size_images(self.size, &cursor.images)
                     .fold(0, |acc, image| acc + image.delay);
                 millis %= animation_length_ms;

src/layout/transaction.rs

@@ -144,7 +144,7 @@ impl LayoutTransaction {
     /// Returns whether all pending windows have committed their serials or the timeout has been
     /// reached.
     pub fn ready(&self) -> bool {
-        Instant::now().duration_since(self.start_time) >= TIMEOUT
+        self.start_time.elapsed() >= TIMEOUT
             || (!self.wait
                 && self
                     .pending_windows