# File lib/merb-core/test/run_spec.rb, line 10
        def dump_failure(counter, failure)
          @output.puts
          @output.puts "#{counter.to_s})"
          @output.puts colorize_failure("#{failure.header}\n#{failure.exception.message}", failure)
          @output.puts format_backtrace(failure.exception.backtrace)
          @output.flush
        end