cleanup Rust 2015 syntax #126

	name: CI

	on:
	push:
	branches:
	- master
	tags:
	- '*'
	pull_request:

	jobs:
	check:
	runs-on: ubuntu-22.04
	strategy:
	matrix:
	subcommand: ['fmt', 'build', 'clippy', 'test']
	include:
	- subcommand: 'clippy'
	# treat warnings as errors
	args: '-- -D warnings'
	- subcommand: 'fmt'
	args: '--check'
	steps:
	- uses: actions/checkout@v4

	- name: Install Rust toolchain
	uses: dtolnay/rust-toolchain@stable

	- name: Install crate dependencies
	run: sudo apt-get install -y libxen-dev

	- run: cargo ${{ matrix.subcommand }} ${{ matrix.args }}

	publish:
	needs: [check]
	runs-on: ubuntu-22.04

	# publish on crates.io
	# only if push on master, and tag is 'v*'
	# this should be triggered by cargo release, which creates a new tag and pushes to the repo
	# cargo release --no-dev-version --skip-publish minor
	if: github.event_name == 'push' && startsWith(github.ref, 'refs/tags/v')
	steps:
	- name: Install Xen headers and libraries
	run: sudo apt-get install -y libxen-dev

	- uses: actions/checkout@v4

	- uses: dtolnay/rust-toolchain@stable

	- name: Publish
	shell: bash
	run: \|
	cargo publish --token ${{ secrets.CRATES_TOKEN }}

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