    # File lib/phusion_passenger/utils/file_system_watcher.rb, line 165
                            def changed?(check_mtime = true)
                                    new_stat = File.stat(@filename)
                                    if check_mtime
                                            mtime_changed = @stat.mtime != new_stat.mtime || @stat.size != new_stat.size
                                    else
                                            mtime_changed = false
                                    end
                                    return @stat.ino != new_stat.ino || @stat.ftype != new_stat.ftype || mtime_changed
                            rescue Errno::EACCES, Errno::ENOENT
                                    return true
                            end