downgrade manylinux build version #384

	name: Rust

	on:
	push:
	branches: [ main ]
	pull_request:
	branches: [ main ]

	env:
	CARGO_TERM_COLOR: always

	jobs:
	build:

	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v3
	- name: Build
	run: cargo build --verbose
	- name: Run tests
	run: cargo test --verbose

	lint:
	name: code lint
	runs-on: ubuntu-latest
	steps:
	- name: Checkout sources
	uses: actions/checkout@v3
	- name: Install toolchain
	uses: dtolnay/rust-toolchain@nightly
	with:
	components: rustfmt, clippy
	- uses: Swatinem/rust-cache@v2
	with:
	cache-on-failure: true

	- name: cargo clippy
	uses: actions-rs/clippy-check@v1
	with:
	args: --all --all-features
	token: ${{ secrets.GITHUB_TOKEN }}

	fmt:
	runs-on: ubuntu-latest
	steps:
	- name: Checkout sources
	uses: actions/checkout@v2

	- name: Install toolchain
	uses: actions-rs/toolchain@v1
	with:
	toolchain: nightly
	profile: minimal
	components: rustfmt, clippy
	override: true

	- uses: Swatinem/rust-cache@v1
	with:
	cache-on-failure: true

	- name: cargo fmt
	run: cargo +nightly fmt --all -- --check

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