version: 2
jobs:
  build:
    docker:
      - image: rustlang/rust:nightly

    steps:
      - checkout
      - restore_cache:
          keys:
            - v4-cargo-cache-{{ arch }}-{{ checksum "Cargo.lock" }}

      - run: cargo test

      - save_cache:
          paths:
            - /usr/local/cargo/registry
            - target/debug/.fingerprint
            - target/debug/build
            - target/debug/deps
          key: v4-cargo-cache-{{ arch }}-{{ checksum "Cargo.lock" }}