sccache 0.2.2

Sccache is a ccache-like tool. It is used as a compiler wrapper and avoids compilation when possible, storing a cache in a remote storage using the S3 API.
os: Visual Studio 2015

environment:
  matrix:
    - channel: stable
      target: x86_64-pc-windows-msvc
    - channel: beta
      target: x86_64-pc-windows-msvc
    - channel: nightly
      target: x86_64-pc-windows-msvc
      EXTRA_FEATURES: unstable
    - channel: 1.17.0 # Oldest supported version. Keep in sync with README.md.
      target: x86_64-pc-windows-msvc

matrix:
  allow_failures:
    - channel: nightly

install:
- appveyor-retry appveyor DownloadFile https://win.rustup.rs/ -FileName rustup-init.exe
- rustup-init.exe -y --default-host %target% --default-toolchain %channel%
- set PATH=%PATH%;C:\Users\appveyor\.cargo\bin
- rustc -V
- cargo -V

build_script:
- cmd: cargo build --verbose --features="all %EXTRA_FEATURES%"

test_script:
- cmd: cargo test --all --verbose --features="all %EXTRA_FEATURES%"

branches:
  only:
    - master