message: Travis: install (or build) clippy on nightly
diff: @@ -4,6 +4,11 @@ rust:
  - 1.31.0
  - beta
  - nightly
  +before_script:
  +- |
  + [ $TRAVIS_RUST_VERSION = "nightly" ] &&
  + rustup component add clippy --toolchain=nightly ||
  + cargo install --git https://github.com/rust-lang/rust-clippy/ --force clippy
  script:
  - |
  cd $TRAVIS_BUILD_DIR &&
  