chore: cargo clippy

src/vm/test.rs

@@ -227,9 +227,10 @@ fn test_fib() {
 #[bench]
 fn bench_fib(b: &mut Bencher) {
     b.iter(|| {
-        black_box(test_expr(
+        test_expr(
             "let fib = n: if n == 1 || n == 2 then 1 else (fib (n - 1)) + (fib (n - 2)); in fib 20",
             int!(6765),
-        ))
+        );
+        black_box(())
     })
 }