Run Rust nightly on Travis for CI.

frewsxcv · frewsxcv · commit c541183a0dd9 · 2018-03-27T16:31:27.000+02:00
diff --git a/.travis.yml b/.travis.yml
@@ -2,7 +2,7 @@ sudo: false
 language: rust
 cache: cargo
 rust:
-  - stable
+  - nightly
 branches:
   only:
   - master
