message: rustup update
diff: @@ -33,6 +33,7 @@ before_script:
  # Install Rust ("stable" toolchain for better caching, it is just used to build rustup-toolchain-install-master)
  - curl https://build.travis-ci.org/files/rustup-init.sh -sSf | sh -s -- -y --default-toolchain stable
  - export PATH=$HOME/.cargo/bin:$PATH
  +- rustup update
  # Install "master" toolchain
  - cargo install rustup-toolchain-install-master || echo "rustup-toolchain-install-master already installed"
  - travis_retry rustup-toolchain-install-master -f -n master $RUSTC_HASH -c rust-src
  