Lower MSRV in CI #12

	---
	name: Build and test
	on:
	- push
	# Build if requested manually from the Actions tab
	- workflow_dispatch

	env:
	CARGO_TERM_COLOR: always
	RUSTFLAGS: --deny warnings

	jobs:
	formatting:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	- uses: actions-rs/toolchain@v1
	with:
	profile: minimal
	toolchain: stable
	components: rustfmt
	default: true
	- name: Check formatting
	run: cargo fmt -- --check

	# Enable this after fixing all the stuff clippy complains about
	# linting:
	# runs-on: ubuntu-latest
	# steps:
	# - uses: actions/checkout@v4
	# - uses: actions-rs/toolchain@v1
	# with:
	# profile: minimal
	# toolchain: stable
	# components: clippy
	# default: true
	# - name: Lint (clippy)
	# uses: actions-rs/clippy-check@v1
	# with:
	# token: ${{ secrets.GITHUB_TOKEN }}

	build-and-test:
	strategy:
	matrix:
	rust: [stable, beta, nightly, 1.50.0]
	runs-on: macos-latest
	steps:
	- uses: actions/checkout@v4

	- uses: actions-rs/toolchain@v1
	with:
	profile: minimal
	toolchain: ${{ matrix.rust }}
	default: true

	- name: Build
	run: cargo build --all-targets

	- name: Test
	# Since the tests modify global state (the system firewall) they cannot
	# run in parallel.
	run: sudo cargo test -- --test-threads=1

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