Bump actions/checkout from 2 to 4 #21

	on:
	push:
	paths-ignore:
	- '**.md'
	pull_request:
	paths-ignore:
	- '**.md'
	workflow_dispatch:

	name: CI

	env:
	RUST_TOOLCHAIN: stable
	TOOLCHAIN_PROFILE: minimal

	jobs:
	lints:
	name: Run cargo fmt and cargo clippy
	runs-on: ubuntu-latest
	steps:
	- name: Checkout sources
	uses: actions/checkout@v4
	- name: Install toolchain
	uses: actions-rs/toolchain@v1
	with:
	profile: ${{ env.TOOLCHAIN_PROFILE }}
	toolchain: ${{ env.RUST_TOOLCHAIN }}
	override: true
	components: rustfmt, clippy
	- name: Cache
	uses: Swatinem/rust-cache@v1
	- name: Run cargo fmt
	uses: actions-rs/cargo@v1
	with:
	command: fmt
	args: --all -- --check
	- name: Run cargo clippy
	uses: actions-rs/cargo@v1
	with:
	command: clippy
	args: -- -D warnings
	test:
	name: Run cargo test
	runs-on: ubuntu-latest
	steps:
	- name: Checkout sources
	uses: actions/checkout@v4
	- name: Install toolchain
	uses: actions-rs/toolchain@v1
	with:
	profile: ${{ env.TOOLCHAIN_PROFILE }}
	toolchain: ${{ env.RUST_TOOLCHAIN }}
	override: true
	- name: Cache
	uses: Swatinem/rust-cache@v1
	- name: Run cargo test
	uses: actions-rs/cargo@v1
	with:
	command: test
	- name: Run cargo test
	uses: actions-rs/cargo@v1
	env:
	RUST_TEST_THREADS: 1
	with:
	command: test

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