try alt version of cargo-llvm-cov #4

	name: Rust

	on:
	push:
	branches: [ main ]

	env:
	CARGO_TERM_COLOR: always
	RUSTFLAGS: -Dwarnings
	RUST_BACKTRACE: 1

	jobs:
	build:

	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v2
	- uses: actions/cache@v2
	with:
	path: \|
	~/.cargo/registry
	~/.cargo/git
	target
	key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}

	- name: Update Rust
	run: rustup update stable

	- name: Install Miri
	run: \|
	rustup toolchain install nightly --component miri
	cargo +nightly miri setup

	- name: Instal cargo-llvm-cov
	run: cargo install --git https://github.com/andrewgazelka/cargo-llvm-cov --branch codecov-improved-region cargo-llvm-cov

	- name: Clippy each feature set
	run: \|
	cargo clippy --all-targets
	cargo clippy --all-targets --features "std"

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

	- name: Run tests with MIRI
	run: cargo +nightly miri test --all-features

	- name: Run two-thread tests with Loom and coverage
	run: \|
	cargo llvm-cov clean
	cargo llvm-cov --no-report --all-features
	env:
	RUSTFLAGS: -Dwarnings --cfg loom

	- name: Run three-thread tests with Loom and coverage
	run: \|
	cargo llvm-cov --no-report --all-features -- --ignored
	cargo llvm-cov report --codecov --output-path codecov.json
	env:
	RUSTFLAGS: -Dwarnings --cfg loom
	LOOM_MAX_PREEMPTIONS: 3

	- name: Upload coverage to Codecov
	uses: codecov/codecov-action@v3
	with:
	files: codecov.json
	fail_ci_if_error: true

	- name: Validate documentation
	run: cargo doc --no-deps

	- name: Check formatting
	run: cargo fmt --all -- --check
	env:
	RUSTDOCFLAGS: -Dwarnings

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