Switch to statically-linked musl for Linux builds. #548

	name: validate commit

	on:
	pull_request:
	push:
	branches:
	- master

	env:
	CARGO_TERM_COLOR: always

	jobs:
	test:
	runs-on: ${{ matrix.os }}
	strategy:
	matrix:
	os:
	- ubuntu-latest
	- macos-latest
	steps:
	- uses: actions/checkout@v2
	- uses: actions/cache@v2
	with:
	path: \|
	~/.cargo/registry
	~/.cargo/git
	target/debug
	key: test-${{ runner.os }}-${{ hashFiles('**/Cargo.lock') }}-${{ secrets.CI_CACHE_VERSION }}
	- run: cargo test
	# There is a bug with BSD tar on macOS where the first 8MB of the file are
	# sometimes all NUL bytes. See https://github.com/actions/cache/issues/403
	# and https://github.com/rust-lang/cargo/issues/8603 for some more
	# information. An alternative solution here is to install GNU tar, but
	# flushing the disk cache seems to work, too.
	- run: sudo purge
	if: startsWith(matrix.os, 'macos-')

	lint:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v2
	- uses: actions/cache@v2
	with:
	path: \|
	~/.cargo/registry
	~/.cargo/git
	target/debug
	key: lint-${{ runner.os }}-${{ hashFiles('**/Cargo.lock') }}-${{ secrets.CI_CACHE_VERSION }}
	- run: cargo clippy -- -D warnings

	format:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v2
	- run: cargo fmt --all -- --check

	benchmark:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v2
	- uses: actions/cache@v2
	with:
	path: \|
	~/.cargo/registry
	~/.cargo/git
	target/release
	key: benchmark-${{ runner.os }}-${{ hashFiles('**/Cargo.lock') }}-${{ secrets.CI_CACHE_VERSION }}
	- run: cargo bench

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