Changes to pass Miri test with the stacked borrows model #18

	name: CI

	on:
	pull_request:
	push:
	branches: [ master ]

	env:
	CARGO_TERM_COLOR: always
	RUSTFLAGS: --deny warnings

	jobs:
	style:
	name: 'Check basic style'
	runs-on: ubuntu-20.04
	steps:
	- uses: actions/checkout@v2
	- name: Check basic style
	run: ./.github/check-basic-style.sh

	check:
	name: 'Build & test'
	runs-on: ubuntu-20.04
	strategy:
	matrix:
	rust:
	- stable
	- beta
	- nightly
	steps:
	- uses: actions/checkout@v2
	- name: Install Rust toolchain
	uses: actions-rs/toolchain@v1
	with:
	toolchain: ${{ matrix.rust }}
	override: true
	profile: minimal
	- name: Prepare cache key
	run: \|
	cargo generate-lockfile
	cp Cargo.lock cache-fingerprint
	echo $RUSTFLAGS >> cache-fingerprint
	echo $(rustc -V) >> cache-fingerprint
	- name: Restore cargo cache
	uses: actions/cache@v2
	with:
	path: \|
	~/.cargo/registry
	~/.cargo/git
	target
	key: ${{ runner.os }}-cargo-${{ hashFiles('cache-fingerprint') }}
	- name: Build
	run: cargo build
	- name: Build benchmarks
	run: cargo build --benches --features=nightly-bench
	if: matrix.rust == 'nightly'
	- name: Run tests
	run: cargo test
	- name: Generate docs
	run: cargo doc

	# We do not use a cache here as Miri prefers a clean working directory anyway.
	check-miri:
	name: 'Run tests with miri'
	runs-on: ubuntu-20.04
	steps:
	- uses: actions/checkout@v2
	- name: Install Rust toolchain
	uses: actions-rs/toolchain@v1
	with:
	toolchain: nightly
	override: true
	profile: minimal
	components: miri
	- name: "Miri setup"
	run: cargo miri setup
	- name: "Run tests with miri"
	run: cargo miri test

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