allow clippy::manual_assert in tests

Author: hellow554

tests/quick.rs

@@ -258,6 +258,7 @@ where
         let mut it = get_it();
 
         for _ in 0..(counts.len() - 1) {
+            #[allow(clippy::manual_assert)]
             if it.next().is_none() {
                 panic!("Iterator shouldn't be finished, may not be deterministic");
             }