title: After upgrading from Rails 4.0.3 to 4.1, WEBrick no longer prints anything to server console
body: <p>After upgrading rails from 4.0.3 to 4.1.9, I start WEBrick, load pages of my app successfully in the browser, but nothing displays in the terminal window. No SQL, no render reports, not even a 500 server error gets a mention. </p>
  
  <p>It does load the usual notifications that webrick is running: </p>
  
  <pre><code>$ rails s
  =&gt; Booting WEBrick
  =&gt; Rails 4.1.9 application starting in local on http://0.0.0.0:3000
  =&gt; Run `rails server -h` for more startup options
  =&gt; Notice: server is listening on all interfaces (0.0.0.0). Consider using 127.0.0.1 (--binding option)
  =&gt; Ctrl-C to shutdown server
  [2015-01-15 15:47:22] INFO  WEBrick 1.3.1
  [2015-01-15 15:47:22] INFO  ruby 2.0.0 (2013-06-27) [x86_64-darwin12.3.0]
  [2015-01-15 15:47:22] INFO  WEBrick::HTTPServer#start: pid=1122 port=3000
  </code></pre>
  
  <p>Nothing has been changed except the rails upgrade, done by defining a version number in my Gemfile and running <code>bundle update rails</code>. I've tried setting a <code>config.log_level = :debug</code> in my environment's config file but got no love. Any ideas? </p>