add clippy to travis integration

Author: rloomba

.travis.yml

@@ -14,6 +14,8 @@ before_install:
   - sudo apt-get -qq update
   - sudo apt-get install -y binutils-dev libunwind8-dev libcurl4-openssl-dev libelf-dev libdw-dev cmake gcc binutils-dev libiberty-dev
 
+before_script:
+  - rustup component add clippy
 script:
      # Support lightning-net-tokio only on Rust stable, beta, and 1.39.0
      - if [ "$(rustup show | grep default | grep '1.39.0')" != "" ]; then export BUILD_NET_TOKIO=1; fi
@@ -22,6 +24,9 @@ script:
      - if [ "$BUILD_NET_TOKIO" == "1" ]; then RUSTFLAGS="-C link-dead-code" cargo build --verbose; fi
      - if [ "$BUILD_NET_TOKIO" != "1" ]; then RUSTFLAGS="-C link-dead-code" cargo build --verbose -p lightning; fi
      - rm -f target/debug/lightning-* # Make sure we drop old test binaries
+     # Run clippy on Rust 1.39.0
+     - if [ "$(rustup show | grep default | grep 1.39.0)" != "" ]; then
+           cargo clippy -- -Aclippy::all -Dclippy::redundant_field_names
      # Test the appropriate workspace(s)
      - if [ "$BUILD_NET_TOKIO" == "1" ]; then RUSTFLAGS="-C link-dead-code" cargo test --verbose; fi
      - if [ "$BUILD_NET_TOKIO" != "1" ]; then RUSTFLAGS="-C link-dead-code" cargo test --verbose -p lightning; fi