surprised about benches

    fn execute_add(c: &mut Criterion) {
        let clos = {
            let mut test_vm = get_test_vm();
            test_vm.program = vec![1, 0, 1, 2];
            test_vm.run_once();
        };

        c.bench_function(
            "execute_add",
            move |b| b.iter(|| clos
            )
        );
    }

Hi! The clos has finished run_once before perform benches, doesn't it? I have not found such example in Criterion.rs's doc. Can it works correctly? how can it works like such following example?

    fn execute_add(c: &mut Criterion) {
        let clos = || {
            let mut test_vm = get_test_vm();
            test_vm.program = vec![1, 0, 1, 2];
            test_vm.run_once();
        };

        c.bench_function(
            "execute_add",
            move |b| b.iter( clos)
        );
    }

Finally, I found your bench doesn't run.

// first
execute_add             time:   [0.0000 ps 0.0000 ps 0.0000 ps]
                   change: [-35.123% +1503.3% +5337.3%] (p = 0.39 > 0.05)
                   No change in performance detected.
Found 13 outliers among 100 measurements (13.00%)

// second
execute_add             time:   [128.81 ns 132.70 ns 137.54 ns]
                        change: [+9.8266% +17.976% +26.758%] (p = 0.00 < 0.05)
                        Performance has regressed.
Found 5 outliers among 100 measurements (5.00%)