em_monkey_patch.rb

# monkey patch eventmachine to ignore errors and report them,
# instead of crashing!!
module EventMachine
  class << self
    alias_method :crashing_stop, :stop
  end

  def self.stop
    if @wrapped_exception
      Scaler.report_error(@wrapped_exception)
      @wrapped_exception = nil
    else
      crashing_stop
    end
  end
end