message: Travis: update the way it runs clippy
diff: @@ -8,7 +8,9 @@ script:
  - |
  cd $TRAVIS_BUILD_DIR &&
  case $TRAVIS_RUST_VERSION in
  - nightly) cargo build -v --features clippy &&
  + nightly) cargo clippy -v &&
  + rm -rf ./target &&
  + cargo build -v &&
  cargo test -v --no-run &&
  cargo test -v ;;
  *) cargo build -v &&
  