chore: updates travis to container based builds and builds with beta

kbknapp · kbknapp · commit 6e52f04e95f7 · 2015-07-13T23:04:40.000-04:00
diff --git a/.travis.yml b/.travis.yml
@@ -1,6 +1,8 @@
 language: rust
+sudo: false
 rust:
 - nightly
+- beta
 - stable
 before_script:
 - git clone --depth 1 https://github.com/kbknapp/travis-cargo
