instance method steal

# File activesupport/lib/active_support/testing/parallelization/test_distributor.rb, line 170
          def steal(worker_id)
            # Steal from other workers in a consistent order
            @worker_count.times do |offset|
              other_id = (worker_id + offset + 1) % @worker_count
              if job = pop_now(other_id)
                return job
              end
            end

            nil
          end