# Thread.report_on_exception = true

autoload(:FileUtils, 'fileutils.rb')

threads = []
50.times do
  threads << Thread.new do
    begin
      FileUtils
    rescue
      false
    else
      true
    end
  end
end
threads.each(&:join)
puts "Success: #{threads.select{|x| x.value}.count}"
puts "Failed: #{threads.select{|x| !x.value}.count}"