message: [ci] Make travis CI use clippy
diff: @@ -53,10 +53,14 @@ install:
  # Print current work directory state as directions.
  - ls -lah
  +before_script:
  + - rustup component add clippy
  +
  script:
  - |
  ls -lah
  cargo check --verbose --all --all-features &&
  + cargo clippy --verbose --all --all-features -- -D warnings &&
  cargo test --verbose --all --all-features &&
  cargo kcov --verbose --coveralls --manifest-path=core/Cargo.toml --features=test-env &&
  bash <(curl -s https://codecov.io/bash)
  