version: 2
jobs:
  latest:
    docker:
      - image: circleci/rust:latest
    steps:
      - checkout
      - run: 
          name: build and test
          command: cargo build && cargo test
  1_34_0:
    docker:
      - image: circleci/rust:1.34.0
    steps:
      - checkout
      - run:
          name: build and test
          command: cargo build && cargo test
  1_33_0:
    docker:
      - image: circleci/rust:1.33.0
    steps:
      - checkout
      - run:
          name: build and test
          command: cargo build && cargo test
  1_32_0:
    docker:
      - image: circleci/rust:1.33.0
    steps:
      - checkout
      - run:
          name: build and test
          command: cargo build && cargo test
  1_31_0:
    docker:
      - image: circleci/rust:1.33.0
    steps:
      - checkout
      - run:
          name: build and test
          command: cargo build && cargo test
  1_30_0:
    docker:
      - image: circleci/rust:1.33.0
    steps:
      - checkout
      - run:
          name: build and test
          command: cargo build && cargo test

workflows:
  version: 2
  build_and_test:
    jobs:
      - latest
      - 1_34_0
      - 1_33_0
      - 1_32_0
      - 1_31_0
      - 1_30_0