gistfile1.txt

To repro:
get the vanity head
git clone http://github.com/assaf/vanity.git
then install gems:
gem install rails redis redis-namespace sqlite3-ruby timecop mocha passenger
then run rake test

(in /Users/antoine/w/git/vanity)
** Invoke test (first_time)
** Execute test
/Users/antoine/.rvm/rubies/rbx-head/bin/rbx -I"lib" -I. "/Users/antoine/.rvm/gems/rbx-head/gems/rake-0.8.7/lib/rake/rake_test_loader.rb" "test/ab_test_test.rb" "test/experiment_test.rb" "test/metric_test.rb" "test/passenger_test.rb" "test/playground_test.rb" "test/rails_test.rb" 
An exception occurred at_exit handler
    no method 'match?' on 3:Fixnum. (NoMethodError)

Backtrace:
  Kernel(Fixnum)#match? (method_missing) at kernel/delta/kernel.rb:85
                       Hash#find_entry at kernel/common/hash.rb:370
                             Hash#key? at kernel/common/hash.rb:428
       Module(Class)#filter_methods {} at kernel/common/module.rb:294
            Rubinius::MethodTable#each at kernel/bootstrap/methodtable.rb:101
          Module(Class)#filter_methods at kernel/common/module.rb:294
  Module(Class)#public_instance_methods at kernel/common/module.rb:277
            Test::Unit::TestCase.suite at /Users/antoine/.rvm/rubies/rbx-head/lib/test/unit/testcase.rb:53
  Test::Unit::Collector::ObjectSpace#collect {} at /Users/antoine/.rvm/rubies/rbx-head/lib/test/unit/collector/objectspace.rb:25
               ObjectSpace.each_object at kernel/common/objectspace.rb:43
  Test::Unit::Collector::ObjectSpace#collect at /Users/antoine/.rvm/rubies/rbx-head/lib/test/unit/collector/objectspace.rb:23
  Test::Unit::AutoRunner.AutoRunner {} at /Users/antoine/.rvm/rubies/rbx-head/lib/test/unit/autorunner.rb:58
            Test::Unit::AutoRunner#run at /Users/antoine/.rvm/rubies/rbx-head/lib/test/unit/autorunner.rb:213
            Test::Unit::AutoRunner.run at /Users/antoine/.rvm/rubies/rbx-head/lib/test/unit/autorunner.rb:12
                    main.__script__ {} at /Users/antoine/.rvm/rubies/rbx-head/lib/test/unit.rb:278
             Rubinius::Loader#epilogue at kernel/loader.rb:483
                 Rubinius::Loader#main at kernel/loader.rb:541
                 Rubinius::Loader.main at kernel/loader.rb:549
                     Object#__script__ at kernel/loader.rb:561
rake aborted!
Command failed with status (1): [/Users/antoine/.rvm/rubies/rbx-head/bin/rb...]
/Users/antoine/.rvm/gems/rbx-head/gems/rake-0.8.7/lib/rake.rb:995:in `sh {}'
/Users/antoine/.rvm/gems/rbx-head/gems/rake-0.8.7/lib/rake.rb:1010:in `sh'
/Users/antoine/.rvm/gems/rbx-head/gems/rake-0.8.7/lib/rake.rb:1094:in `sh'
/Users/antoine/.rvm/gems/rbx-head/gems/rake-0.8.7/lib/rake.rb:1029:in `ruby'
/Users/antoine/.rvm/gems/rbx-head/gems/rake-0.8.7/lib/rake.rb:1094:in `ruby'
/Users/antoine/.rvm/gems/rbx-head/gems/rake-0.8.7/lib/rake/testtask.rb:117:in `define {}'
/Users/antoine/.rvm/gems/rbx-head/gems/rake-0.8.7/lib/rake.rb:1112:in `verbose'
/Users/antoine/.rvm/gems/rbx-head/gems/rake-0.8.7/lib/rake/testtask.rb:102:in `define {}'
/Users/antoine/.rvm/gems/rbx-head/gems/rake-0.8.7/lib/rake.rb:636:in `execute {}'
kernel/bootstrap/array.rb:163:in `each'
/Users/antoine/.rvm/gems/rbx-head/gems/rake-0.8.7/lib/rake.rb:631:in `execute'
/Users/antoine/.rvm/gems/rbx-head/gems/rake-0.8.7/lib/rake.rb:597:in `invoke_with_call_chain {}'
/Users/antoine/.rvm/rubies/rbx-head/lib/monitor.rb:191:in `synchronize (mon_synchronize)'
/Users/antoine/.rvm/gems/rbx-head/gems/rake-0.8.7/lib/rake.rb:590:in `invoke_with_call_chain'
/Users/antoine/.rvm/gems/rbx-head/gems/rake-0.8.7/lib/rake.rb:583:in `invoke'
/Users/antoine/.rvm/gems/rbx-head/gems/rake-0.8.7/lib/rake.rb:2051:in `invoke_task'
/Users/antoine/.rvm/gems/rbx-head/gems/rake-0.8.7/lib/rake.rb:2029:in `top_level {}'
kernel/bootstrap/array.rb:163:in `each'
/Users/antoine/.rvm/gems/rbx-head/gems/rake-0.8.7/lib/rake.rb:2029:in `top_level {}'
/Users/antoine/.rvm/gems/rbx-head/gems/rake-0.8.7/lib/rake.rb:2068:in `standard_exception_handling'
/Users/antoine/.rvm/gems/rbx-head/gems/rake-0.8.7/lib/rake.rb:2023:in `top_level'
/Users/antoine/.rvm/gems/rbx-head/gems/rake-0.8.7/lib/rake.rb:2001:in `run {}'
/Users/antoine/.rvm/gems/rbx-head/gems/rake-0.8.7/lib/rake.rb:2068:in `standard_exception_handling'
/Users/antoine/.rvm/gems/rbx-head/gems/rake-0.8.7/lib/rake.rb:1998:in `run'
/Users/antoine/.rvm/gems/rbx-head/gems/rake-0.8.7/bin/rake:31:in `__script__'
kernel/common/kernel.rb:626:in `load'
/Users/antoine/.rvm/gems/rbx-head/bin/rake:19:in `__script__'
kernel/delta/codeloader.rb:67:in `load_script'
kernel/delta/codeloader.rb:91:in `load_script'
kernel/loader.rb:431:in `script'
kernel/loader.rb:523:in `main'
kernel/loader.rb:549:in `main'
kernel/loader.rb:561:in `__script__'