.travis.yml in parallel_tests-1.0.5 vs .travis.yml in parallel_tests-1.0.6

@@ -3,5 +3,8 @@
   - 1.9.3
   - 2.0.0
   - 2.1.0
   - jruby-1.7.6
   - jruby-head
+matrix:
+  allow_failures:
+    - rvm: jruby-head