fix: erroneous judgement on the emptiness of r and s #318

	name: Rust CI

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

	env:
	CARGO_TERM_COLOR: always

	jobs:
	build:

	runs-on: ubuntu-latest

	strategy:
	matrix:
	rust-version: [1.79.0]

	steps:
	- name: Checkout code
	uses: actions/checkout@v2
	- name: Cache Cargo dependencies
	uses: actions/cache@v2
	with:
	path: ~/.cargo
	key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}
	restore-keys: \|
	${{ runner.os }}-cargo-
	- name: Install Protoc
	uses: arduino/setup-protoc@v1
	- name: Install Rust
	uses: actions-rs/toolchain@v1
	with:
	toolchain: ${{ matrix.rust-version }}
	- name: Check formatting
	run: cargo fmt -- --check
	- name: cargo clippy
	uses: actions-rs/cargo@v1
	with:
	command: clippy
	args: --workspace --all-targets --tests -- -D warnings
	- name: Build and test
	run: cargo test --all-features

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