Eventmachine & Delorean time travel thing

time_travel.rb

require 'em/pure_ruby'
require 'eventmachine'
require 'delorean'
require 'benchmark'

Benchmark.measure do
  EM.run do
    ticks = 0
    timer = EM.add_periodic_timer 10 do
      print '.'
      ticks = ticks + 1
      timer.cancel if ticks > 50
      EM.stop if ticks > 50
      EM.next_tick do
        Delorean.jump 10
      end
    end

    Delorean.jump 10
  end
end
................................................... =>   0.060000   0.010000   0.070000 (510.166286)

Delorean works fine with pure Ruby Eventmachine implementation only.