Test on whatever is the latest beta.

SimonSapin · SimonSapin · commit 522a9755d239 · 2015-04-21T21:40:33.000+02:00
diff --git a/.travis.yml b/.travis.yml
@@ -2,7 +2,7 @@ sudo: false
 language: rust
 rust:
   - nightly
-  - 1.0.0-beta
+  - beta
 
 script:
   - cargo build --verbose
