title: CTRL+C to Webbrick server ignored
body: <p>In the past, I could exit my rails application launched using webbrick using <kbd>Ctrl</kbd><kbd>C</kbd>. At some point in development, this functionality broke ( <kbd>Ctrl</kbd><kbd>C</kbd> does nothing now). I'm lead to believe this was caused by changes in one of my gem dependencies, as the problem is also present when checking out a really old version of the application, using the current gemset.</p>
  
  <p>My question is: how can I fix this problem, or at least find the out what is causing it?</p>