Use `io::Error` instead of `SendError` #406

	name: CI

	on: [push, pull_request]

	env:
	CARGO_TERM_COLOR: always

	jobs:
	check:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	- name: Install Rust
	uses: dtolnay/rust-toolchain@stable
	with:
	components: clippy, rustfmt
	- name: Check formatting
	run: cargo fmt -- --check
	- name: Clippy
	run: cargo clippy -- -D warnings -W clippy::pedantic
	- name: markdownlint
	uses: articulate/actions-markdownlint@v1

	test:
	runs-on: ${{ matrix.os }}
	strategy:
	matrix:
	os: [ubuntu-latest, macOS-latest, windows-latest]
	steps:
	- uses: actions/checkout@v4
	- name: Install Rust
	uses: dtolnay/rust-toolchain@stable
	- name: Build
	run: cargo build --verbose
	- name: Run tests
	run: cargo test --verbose

	msrv:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	- name: Install Rust
	uses: dtolnay/rust-toolchain@1.69.0
	- name: Build
	run: cargo build --verbose
	- name: Run tests
	run: cargo test --verbose

	coverage:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	- name: Install Rust
	uses: dtolnay/rust-toolchain@stable
	- name: Install cargo-llvm-cov
	uses: taiki-e/install-action@v2
	with:
	tool: cargo-llvm-cov
	- name: Generate code coverage
	run: cargo llvm-cov --all-features --workspace --lcov --output-path lcov.info
	- name: Update coverage to Codecov
	uses: codecov/codecov-action@v4
	env:
	CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
	with:
	files: lcov.info
	fail_ci_if_error: true

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