title: NodeJS app crashing on Heroku with error "Stopping process with SIGKILL"
body: <p>The code shown below fails on Heroku with the error <code>Stopping process with SIGKILL</code></p>
  
  <pre><code>http.createServer((req, res) =&gt; {
    var server_port = process.env.YOUR_PORT || process.env.PORT || 80;
    var server_host = process.env.YOUR_HOST || '0.0.0.0';
    server.listen(server_port, server_host, function() {
      console.log('Listening on port %d', server_port);
    });
  });
  </code></pre>
  
  <p>Logs:</p>
  
  <pre><code>heroku[web.1]: Error R10 (Boot timeout) -&gt; Web process failed to bind to $PORT within 60 seconds of launch
  </code></pre>
  
  <p>How can I fix this issue?</p>