message: Improved travis script
diff: language: rust
  -
  +cache: cargo
  rust:
  - nightly
  -
  env:
  - - CARGO_INCREMENTAL=0
  -
  + - CARGO_INCREMENTAL=1
  os: linux
  -
  -addons:
  - apt:
  - packages:
  - # Install makeinfo [sic] - needed for constructing libffi
  - - texinfo
  -
  -cache:
  - directories:
  - - $HOME/.cargo
  - - $TRAVIS_BUILD_DIR/target
  -
  sudo: false
  -
  notifications:
  email:
  on_success: never
  on_failure: change
  -
  script:
  - cargo test
  - cargo bench
  