fuzz.yml

name: Fuzz

on:
  push:
    branches:
      - "master"
    tags:
      - "*"
  schedule:
    - cron: "40 6 * * *" # every day at 6:40
  pull_request:

env:
  # disable incremental compilation.
  #
  # incremental compilation is useful as part of an edit-build-test-edit cycle,
  # as it lets the compiler avoid recompiling code that hasn't changed. however,
  # on CI, we're not making small edits; we're almost always building the entire
  # project from scratch. thus, incremental compilation on CI actually
  # introduces *additional* overhead to support making future builds
  # faster...but no future builds will ever occur in any given CI environment.
  #
  # see https://matklad.github.io/2021/09/04/fast-rust-builds.html#ci-workflow
  # for details.
  CARGO_INCREMENTAL: 0
  # allow more retries for network requests in cargo (downloading crates) and
  # rustup (installing toolchains). this should help to reduce flaky CI failures
  # from transient network timeouts or other issues.
  CARGO_NET_RETRY: 10
  RUSTUP_MAX_RETRIES: 10
  # don't emit giant backtraces in the CI logs.
  RUST_BACKTRACE: short

jobs:
  fuzz:
    name: "Fuzzer"
    runs-on: ubuntu-latest
    timeout-minutes: 20
    steps:
      - uses: actions/checkout@v1
      - run: cargo install cargo-fuzz
      - run: cargo fuzz run chaos -- -max_total_time=300