Bump actions/checkout from 3 to 4 #5

	name: CI

	on:
	push:
	pull_request:

	permissions:
	contents: read

	env:
	RUSTFLAGS: -Dwarnings

	jobs:
	test:
	name: Rust ${{matrix.rust}}
	runs-on: ubuntu-latest
	strategy:
	fail-fast: false
	matrix:
	rust: [beta, stable, 1.56.0]
	include:
	- rust: nightly
	rustflags: --cfg thiserror_nightly_testing
	timeout-minutes: 45
	steps:
	- uses: actions/checkout@v4
	- uses: dtolnay/rust-toolchain@master
	with:
	toolchain: ${{matrix.rust}}
	components: rust-src
	- run: cargo test --all
	env:
	RUSTFLAGS: ${{matrix.rustflags}} ${{env.RUSTFLAGS}}

	clippy:
	name: Clippy
	runs-on: ubuntu-latest
	if: github.event_name != 'pull_request'
	timeout-minutes: 45
	steps:
	- uses: actions/checkout@v4
	- uses: dtolnay/rust-toolchain@master
	with:
	toolchain: stable
	components: clippy, rust-src
	- run: cargo clippy -- -Dclippy::all -Dclippy::pedantic

	fmt:
	name: Fmt
	runs-on: ubuntu-latest
	if: github.event_name != 'pull_request'
	timeout-minutes: 45
	steps:
	- uses: actions/checkout@v4
	- uses: dtolnay/rust-toolchain@master
	with:
	toolchain: stable
	components: rustfmt, rust-src
	- run: cargo fmt --all -- --check

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