miri.yml

name: Rust - Miri Testing (CRON)
on:
  schedule:
    # Conduct Miri testing on 3:30 UTC every night.
    - cron: "30 3 * * *"
jobs:
  miri:
    name: Miri
    runs-on: ubuntu-latest
    steps:
        - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332
        - uses: dtolnay/rust-toolchain@nightly
          with:
            components: miri
            targets: x86_64-unknown-linux-gnu
        - name: Set up Rust cache
          uses: Swatinem/rust-cache@v2
        - name: Checkout Submodules
          run: git submodule update --init --recursive
        - name: Install cargo-nextest
          run:
            # Note: We use `|| true` because cargo install returns an error
            #       if cargo-nextest was already installed on the CI runner.
            cargo install cargo-nextest || true
        - name: Miri Testing - Wasm Spec Testsuite
          env:
            # Debug assertions are checked in the normal test jobs.
            # They have huge overhead for Wasmi and unnecessarily slow down Miri.
            # The Miri job should focus on finding undefined behavior instead or logic errors.
            CARGO_PROFILE_DEV_DEBUG_ASSERTIONS: "false"
          run: cargo miri nextest run --target x86_64-unknown-linux-gnu --test spec_shim