class Lumberjack::Formatter::ExceptionFormatter

def call(exception)
  message = +"#{exception.class.name}: #{exception.message}"
  trace = exception.backtrace
  if trace
    trace = clean_backtrace(trace)
    message << "#{Lumberjack::LINE_SEPARATOR}  #{trace.join("#{Lumberjack::LINE_SEPARATOR}  ")}"
  end
  message
end