ci: check rustfmt, upload coverage

Signed-off-by: Nick Stevens <[email protected]>

Author: nastevens

.travis.yml

@@ -1,15 +1,43 @@
+sudo: false
+
 language: rust
+
+cache: cargo
+
+addons:
+  apt:
+    sources:
+      - kalakris-cmake
+    packages:
+      - cmake
+      - libcurl4-openssl-dev
+      - libelf-dev
+      - libdw-dev
+      - binutils-dev
+
 rust:
   - 1.15.0
   - 1.16.0
   - stable
   - beta
   - nightly
 
+before_script:
+  - pip install 'travis-cargo<0.2' --user
+  - export PATH=$HOME/.local/bin:$PATH
+  - |
+      if [ $TRAVIS_RUST_VERSION = "stable" ]; then
+        cargo install cargo-update
+        export PATH=$HOME/.cargo/bin:$PATH
+        cargo install-update --allow-no-update rustfmt cargo-update
+      fi
+
 script:
-  - cargo build --verbose
-  - cargo test --verbose
-  - cargo doc
+  - travis-cargo build
+  - travis-cargo test
+  - travis-cargo bench
+  - travis-cargo --only stable doc -- --no-deps
+  - travis-cargo --only stable fmt
 
-# Use Travis container-based infrastructure
-sudo: false
+after_success:
+  - travis-cargo coveralls --no-sudo --verify

Cargo.toml

@@ -16,3 +16,6 @@ skeptic = "0.9"
 
 [dev-dependencies]
 skeptic = "0.9"
+
+[features]
+unstable = []