message: test more targets on travis
diff: @@ -5,6 +5,9 @@ before_script:
  - |
  pip install 'travis-cargo<0.2' --user &&
  export PATH=$HOME/.local/bin:$PATH
  +- rustup target add i686-unknown-linux-gnu
  +- rustup target add i686-pc-windows-gnu
  +- rustup target add i686-pc-windows-msvc
  script:
  - |
  env RUST_SYSROOT=$HOME/rust travis-cargo build &&
  