class RSpec::Core::Formatters::HtmlFormatter

def example_failed(example)
  super(example)
  unless @header_red
    @header_red = true
    @printer.make_header_red
  end
  unless @example_group_red
    @example_group_red = true
    @printer.make_example_group_header_red(example_group_number)
  end
  @printer.move_progress(percent_done)
  exception = example.metadata[:execution_result][:exception]
  exception_details = if exception
    {
      :message => exception.message,
      :backtrace => format_backtrace(exception.backtrace, example).join("\n")
    }
  else
    false
  end
  extra = extra_failure_content(exception)
  @printer.print_example_failed(
    exception.pending_fixed?,
    example.description,
    example.execution_result[:run_time],
    @failed_examples.size,
    exception_details,
    (extra == "") ? false : extra,
    true
  )
  @printer.flush
end