Travis: cache ~/.cargo

.travis.yml

@@ -6,23 +6,28 @@ cache:
  ccache: true
  directories:
  - $DENO_BUILD_PATH
+ - $CARGO_PATH
+ - $RUSTUP_PATH
 env:
  global:
+ - CARGO_PATH=$HOME/.cargo/
+ - RUSTUP_PATH=$HOME/.rustup/
  # is_debug, use_allocator, and ccache are used to speed travis.
  # use_custom_libcxx=false and use_sysroot=false seem to be required to build on
  # Ubuntu 14.04
  # Help: How do you wrap long lines here?
  - DENO_BUILD_ARGS="is_debug=false use_allocator=\"none\" use_custom_libcxx=false use_sysroot=false"
  - DENO_BUILD_PATH=$HOME/out/Default
  - DENO_BUILD_MODE=debug
+before_install: |
+ # Install Rust.
+ # TODO(ry) Include rustc in third_party https://github.com/ry/deno/issues/386
+ export PATH=$CARGO_PATH/bin:$PATH
+ rustc --version
+ if [ $? != 0 ]; then
+ curl -sSf https://sh.rustup.rs | sh -s -- -y
+ fi
 install:
- # Sync dependencies.
- # TODO(ry) These sync steps are very terrible and only here temporarily.
- # rustc should be added to deno_third_party. Ultimately Deno *should not*
- # depend on yarn, gclient, rustup, cargo, nor any internet connection.
- - curl -sSf https://sh.rustup.rs | sh -s -- -y
- - export PATH=$HOME/.cargo/bin:$PATH
- - rustc --version
  # ccache needs the custom LLVM to be in PATH and other variables.
  - export PATH=`pwd`/third_party/llvm-build/Release+Asserts/bin:$PATH
  - export CCACHE_CPP2=yes