language: rustsudo: falsematrix:  include:    - rust: stable    - rust: nightly      env: FEATURES="--features nightly"script:    - cargo build $FEATURES    - cargo test $FEATURES    - cargo doc --no-depsafter_success: |    [ "$TRAVIS_RUST_VERSION" = nightly ] &&    [ "$TRAVIS_BRANCH" = master ] &&    [ "$TRAVIS_PULL_REQUEST" = false ] &&    bash deploy-docs.shnotifications:    webhooks: http://huon.me:54857/travis