# File lib/compass/commands/update_project.rb, line 45
      def perform
        compiler = new_compiler_instance
        check_for_sass_files!(compiler)
        prepare_project!(compiler)
        compiler.compile!
        if compiler.error_count > 0
          compiler.logger.red do
            compiler.logger.log "Compilation failed in #{compiler.error_count} files."
          end
          failed! 
        end
      end