title: Getting execution time with Cargo
body: <p>I am pretty new to Rust and I want to time the execution of my program. I searched online, but found nothing so far. After running <code>cargo build</code>, my code is executed like this:</p>
  
  <pre><code>bling@bling ~/github/rust/hello_world [master *]
  ± % ./target/debug/hello_world
  </code></pre>
  
  <p>Does Cargo have a built in way to time the execution or do I need to use the command line?</p>