rails/rails — pull request #9691 by hone (2013-03-12 23:36:10+00:00)
Title: Rails default logging to STDOUT

Change the default logger for new Rails 4 apps to log to STDOUT. This way when starting an app, you can see the output on the console without tailing the logs file out of the box. Anyone who's serious about logging can replace this. I talked this over with @jeremy and @tenderlove.