title: How to understand Bazel's output time?
body: <p>Everytime after a build is done, I see something like:</p>
  
  <p>Elapsed time: 1034.748s, Critical Path: 257.54s</p>
  
  <p>Wondering what's the difference between Elapsed Time and Critical Path? What can be causing the time difference?</p>
  
  <p>Forwarded from: <a href="https://github.com/bazelbuild/bazel/issues/3164" rel="noreferrer">https://github.com/bazelbuild/bazel/issues/3164</a></p>