Add function calls to understand detached results.

src/main.rs

@@ -48,9 +48,34 @@ fn four(runtime: Duration) {
     }
 }
 
+#[inline(never)]
+fn first(runtime: Duration) {
+    println!("Starting first");
+    let start = Instant::now();
+    loop {
+        let diff = Instant::now() - start;
+        if diff > runtime {
+            return;
+        }
+    }
+}
+
+#[inline(never)]
+fn last(runtime: Duration) {
+    println!("Starting last");
+    let start = Instant::now();
+    loop {
+        let diff = Instant::now() - start;
+        if diff > runtime {
+            return;
+        }
+    }
+}
+
 fn main() {
     let runtime = Duration::new(2, 0);
 
+    first(runtime);
     four(runtime);
     three(runtime);
     two(runtime);
@@ -61,4 +86,5 @@ fn main() {
     three(runtime);
     one(runtime);
     four(runtime);
+    last(runtime);
 }