Reorganize imports & Clippy-fix #135

	name: CI

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

	env:
	CARGO_TERM_COLOR: always

	jobs:
	# test `faiss` crates after installing libfaiss_c.so
	build:
	runs-on: ubuntu-latest
	strategy:
	matrix:
	rust:
	- stable
	- beta
	steps:
	- uses: actions/checkout@v3
	- name: Cache Faiss shared objects
	uses: actions/cache@v3
	with:
	path: ~/.faiss_c
	key: ${{ runner.os }}-build-${{ env.cache-name }}-libfaiss
	- name: Install CMake
	uses: lukka/get-cmake@latest
	- name: Download and build Faiss
	run: ./faiss-sys/ci/install_faiss_c.sh
	- name: Install Faiss
	run: sudo cp $HOME/.faiss_c/lib*.so /usr/lib/
	- uses: actions-rust-lang/setup-rust-toolchain@v1
	with:
	toolchain: ${{ matrix.rust }}
	cache: true
	# Build and run tests
	- name: Run tests
	run: cargo test --verbose

	# test `faiss` crates with static linking
	build-static:
	runs-on: ubuntu-22.04
	strategy:
	matrix:
	rust:
	- stable
	steps:
	- uses: actions/checkout@v3
	with:
	submodules: recursive
	- uses: actions-rust-lang/setup-rust-toolchain@v1
	with:
	toolchain: ${{ matrix.rust }}
	cache: true
	- name: Install CMake
	uses: lukka/get-cmake@latest
	- run: gcc -v
	- run: cmake --version
	# Build everything and run tests
	- name: Run tests
	run: cargo test --verbose --features static

	clippy:
	name: Clippy
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v3
	- uses: actions-rust-lang/setup-rust-toolchain@v1
	with:
	toolchain: stable
	components: clippy
	cache: true
	- run: cargo clippy
	env:
	RUSTFLAGS: -W warnings

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