clippy 0.0.169

A bunch of helpful lints to avoid common pitfalls in Rust
environment:
    global:
        PROJECT_NAME: rust-clippy
    matrix:
        - TARGET: i686-pc-windows-gnu
          MSYS2_BITS: 32
        - TARGET: i686-pc-windows-msvc
          MSYS2_BITS: 32
        - TARGET: x86_64-pc-windows-gnu
          MSYS2_BITS: 64
        - TARGET: x86_64-pc-windows-msvc
          MSYS2_BITS: 64

install:
    - set PATH=C:\Program Files\Git\mingw64\bin;%PATH%
    - curl -sSf -o rustup-init.exe https://win.rustup.rs/
    - rustup-init.exe -y --default-host %TARGET% --default-toolchain nightly
    - set PATH=%PATH%;C:\Users\appveyor\.cargo\bin;C:\Users\appveyor\.rustup\toolchains\nightly-%TARGET%\bin
    - if defined MSYS2_BITS set PATH=%PATH%;C:\msys64\mingw%MSYS2_BITS%\bin
    - rustc -V
    - cargo -V

build: false

test_script:
    - set RUST_BACKTRACE=1
    - cargo build --features debugging
    - cargo test --features debugging
    - copy target\debug\cargo-clippy.exe C:\Users\appveyor\.cargo\bin\
    - cargo clippy -- -D clippy
    - cd clippy_lints && cargo clippy -- -D clippy && cd ..

notifications:
    - provider: Email
      on_build_success: false