language: generic
cache:
  # Cache the global cargo directory, but NOT the local `target` directory which
  # we cannot reuse anyway when the nightly changes (and it grows quite large
  # over time).
  directories:
    - $HOME/.cargo
    - $HOME/.rustup

os:
- linux
- osx
dist: xenial

# Run in PRs and for bors, but not on master.
if: branch = auto OR branch = try OR type = pull_request OR type = cron

env:
  global:
  - RUST_TEST_NOCAPTURE=1
  - RUST_BACKTRACE=1

before_script:
# Linux: install extra stuff for cross-compilation
- if [[ "$TRAVIS_OS_NAME" == linux ]]; then sudo apt update && sudo apt install gcc-multilib; fi
# Compute the rust version we use. We do not use "language: rust" to have more control here.
- |
  if [[ "$TRAVIS_EVENT_TYPE" == cron ]]; then
    RUSTC_HASH=$(git ls-remote https://github.com/rust-lang/rust.git master | awk '{print $1}')
  else
    RUSTC_HASH=$(cat rust-version)
  fi
# 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 --profile minimal
- export PATH=$HOME/.cargo/bin:$PATH
- rustup default stable
- rustup toolchain uninstall beta
- 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 -c rustc-dev
- rustup default master
- rustc --version
- cargo --version

script:
- ./travis.sh

before_cache:
# Don't cache "master" toolchain, it's a waste
- rustup default stable
- rustup toolchain uninstall master

notifications:
  email:
    on_success: never
    recipients:
      - post+travis@ralfj.de
      - travis-miri@oli-obk.de
branches:
  only:
  - master
  - auto
  - try