small CI fixes #350

	name: CI
	on: [push, pull_request]

	env:
	CARGO_TERM_COLOR: always
	RUST_BACKTRACE: 1

	jobs:
	rust:
	name: Test
	strategy:
	matrix:
	rust:
	- stable
	- 1.67
	include:
	- rust: stable
	extra_components: rustfmt
	runs-on: ubuntu-20.04
	steps:
	- name: Checkout
	uses: actions/checkout@v4
	- name: Cache
	uses: actions/cache@v3
	with:
	path: \|
	~/.cargo/registry
	~/.cargo/git
	target
	key: ${{ matrix.rust }}-cargo-${{ hashFiles('**/Cargo.lock') }}
	- name: Install Rust
	uses: actions-rs/toolchain@v1
	with:
	profile: minimal
	toolchain: ${{ matrix.rust }}
	override: true
	components: ${{ matrix.extra_components }}
	- name: Build
	run: cargo build --all-features --all-targets --workspace
	- name: Test
	run: cargo test --all-features --all-targets --workspace
	- name: Check fuzz tests
	run: cd fuzz && cargo check --workspace
	- name: Check main workspace formatting
	if: matrix.rust == 'stable'
	run: cargo fmt --all --check
	- name: Check fuzz worspace formatting
	if: matrix.rust == 'stable'
	run: cd fuzz && cargo fmt --all --check
	- name: Clippy on main workspace
	if: matrix.rust == 'stable'
	run: cargo clippy --workspace -- -D warnings
	- name: Clippy on fuzz workspace
	if: matrix.rust == 'stable'
	run: cd fuzz && cargo clippy --workspace -- -D warnings

	license:
	name: Check copyright/license headers
	runs-on: ubuntu-20.04
	steps:
	- name: Checkout
	uses: actions/checkout@v2
	- run: find . -type f -print0 \| xargs -0 .github/workflows/check-license.py

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