.travis.yml in virtus-0.5.2 vs .travis.yml in virtus-0.5.3

@@ -9,9 +9,12 @@
   - jruby-19mode
   - rbx-18mode
   - rbx-19mode
   - ree
   - jruby-head
+matrix:
+  allow_failures:
+    - rvm: jruby-head
 notifications:
   email:
     - [e-mail]
     - [e-mail]