Disabling echo from webrick

How can I disable messages from webrick echoed on to the terminal? For the INFO messages that appear at the beginning, I was able to disable it by setting the Logger parameter so as:

s = WEBrick::HTTPServer.new(
  Port: 3000,
  BindAddress: "localhost",
  Logger: WEBrick::Log.new("/dev/null"),
)

But I further want to disable the messages that look like:

localhost - - [17/Jun/2011:10:01:38 EDT] "GET .... HTTP/1.1" 200 0 http://localhost:3000/ -> .....

when a request is made from the web browser.