try named builds for coverage & fmt

.travis.yml

@@ -1,6 +1,6 @@
 sudo: required
 language: rust
-dist: trusty
+
 addons:
   apt:
     packages:
@@ -9,36 +9,38 @@ cache:
   directories:
     - $HOME/.cargo
 env:
+  matrix:
     - ELEFREN_FEATURES="--features toml"
     - ELEFREN_FEATURES="--features json"
     - ELEFREN_FEATURES="--features all"
     - ELEFREN_FEATURES=""
-os:
+
-  - linux
-  - osx
-rust:
-  - stable
-  - beta
-  - nightly
-before_script:
-  - |
-    if [[ "$TRAVIS_RUST_VERSION" == "nightly"* ]]; then rustup component add rustfmt-preview; fi
-before_cache:
-  - |
-    if [[ "$TRAVIS_RUST_VERSION" == "nightly"* ]] 2> /dev/null && [ -z "$ELEFREN_FEATURES" ] 2>/dev/null && [[ "$TRAVIS_OS_NAME" == "linux" ]] 2>/dev/null; then
-      RUSTFLAGS="--cfg procmacro2_semver_exempt" cargo install -f cargo-tarpaulin
-    fi
 script:
-  - |
-    if [[ "$TRAVIS_RUST_VERSION" == "nightly"* ]]; then cargo fmt --all -- --check; fi
   - cargo test $ELEFREN_FEATURES
-after_success: |
+
-  if [[ "$TRAVIS_RUST_VERSION" == "nightly"* ]] 2> /dev/null && [ -z "$ELEFREN_FEATURES" ] 2>/dev/null && [[ "$TRAVIS_OS_NAME" == "linux" ]]; then
-    cargo tarpaulin --ciserver travis-ci --coveralls $TRAVIS_JOB_ID --features toml
-  fi
 matrix:
+  include:
+    - os: osx
+    - os: linux
+    - rust: stable
+    - rust: beta
+    - rust: nightly
+
+    - name: "Coverage"
+      rust: nightly
+      before_cache: RUSTFLAGS="--cfg procmacro2_semver_exempt" cargo install -f cargo-tarpaulin
+      after_success: cargo tarpaulin --ciserver travis-ci --coveralls $TRAVIS_JOB_ID $ELEFREN_FEATURES
+      env:
+        - ELEFREN_FEATURES="--features all"
+
+    - name: "rustfmt"
+      rust: nightly
+      before_script: rustup component add rustfmt-preview
+      script: cargo fmt --all -- check
+
   allow_failures:
     - rust: nightly
+
 notifications:
   email:
     on_success: never