Allow rubinius failures.

gkellogg · gkellogg · commit 703b81025ed7 · 2016-10-01T12:12:50.000-07:00
diff --git a/.travis.yml b/.travis.yml
@@ -13,3 +13,4 @@ sudo: false
 matrix:
   allow_failures:
     - rvm: jruby
+    - rvm: rbx
