Fuzz #618

	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

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