# File lib/nanoc/extra/checking/runner.rb, line 133
    def print_issues(issues)
      require 'colored'

      return if issues.empty?
      puts "Issues found!"
      issues.group_by { |i| i.subject }.to_a.sort_by { |p| p.first }.each do |pair|
        subject = pair.first
        issues  = pair.last
        unless issues.empty?
          puts "  #{subject}:"
          issues.each do |i|
            puts "    [ #{'ERROR'.red} ] #{i.check_class.identifier} - #{i.description}"
          end
        end
      end
    end