Use the new Rust support in Travis-CI

Author: SimonSapin

.travis.yml

@@ -1,16 +1,9 @@
-install:
-  - curl -O http://static.rust-lang.org/dist/rust-nightly-x86_64-unknown-linux-gnu.tar.gz
-  - tar xf rust-nightly-x86_64-unknown-linux-gnu.tar.gz
-  - sudo ./rust-nightly-x86_64-unknown-linux-gnu/install.sh
-
-  - curl -O http://static.rust-lang.org/cargo-dist/cargo-nightly-linux.tar.gz
-  - tar xf cargo-nightly-linux.tar.gz
-  - sudo ./cargo-nightly/install.sh
+language: rust
 
 script:
-  - cargo build
-  - cargo test
-  - cargo doc
+  - cargo build --verbose
+  - cargo test --verbose
+  - cargo doc --verbose
 
 after_success: |
   [ $TRAVIS_BRANCH = master ] &&