Cargo

Improve return type of NonEmpty::split #45

	name: Cargo

	on:
	push:
	branches: [master]
	pull_request:
	branches: [master]

	jobs:
	build:
	name: Build and test
	strategy:
	matrix:
	os: ['ubuntu-latest', 'macos-latest']
	runs-on: ${{ matrix.os }}
	steps:
	- uses: actions/checkout@v2
	- name: Build
	run: cargo build --verbose
	env:
	RUSTFLAGS: -D warnings
	- name: Run tests
	run: cargo test --all --verbose --features serialize,arbitrary

	rustfmt_and_clippy:
	name: Check rustfmt style && run clippy
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v2
	- uses: actions-rs/toolchain@v1
	with:
	toolchain: stable
	profile: minimal
	components: clippy, rustfmt
	override: true
	- name: Cache cargo registry
	uses: actions/cache@v1
	with:
	path: ~/.cargo/registry
	key: ${{ runner.os }}-cargo-registry-${{ hashFiles('**/Cargo.lock') }}
	- name: Run clippy
	uses: actions-rs/cargo@v1
	with:
	command: clippy
	args: --all --tests --features serialize,arbitrary
	env:
	RUSTFLAGS: -D warnings
	- name: Check formating
	uses: actions-rs/cargo@v1
	with:
	command: fmt
	args: --all -- --check

Provide feedback