features/trema_run/conf_option.feature in trema-0.9.0 vs features/trema_run/conf_option.feature in trema-0.10.0

@@ -52,10 +52,10 @@
       """ruby
       class NullController < Trema::Controller; end
       """
     When I run `trema run null_controller.rb -c invalid_trema.conf`
     Then the exit status should not be 0
-    Then the output should contain "uninitialized constant Phut::Syntax::Baz (NameError)"
+    Then the output should match /uninitialized constant .*::Baz \(NameError\)/
 
   @sudo
   Scenario: SyntaxError
     Given a file named "invalid_trema.conf" with:
       """