[Amir] caching the libraries to speed up the build #2

	name: Rust CI

	on:
	push:
	branches: [main]
	pull_request:
	branches: [main]
	jobs:
	build:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v2
	- name: Setup Rust
	uses: actions-rs/toolchain@v1
	with:
	toolchain: stable
	override: true
	- name: Cache cargo registry
	uses: actions/cache@v2
	with:
	path: ~/.cargo/registry
	key: ${{ runner.os }}-cargo-registry-${{ hashFiles('**/Cargo.lock') }}
	- name: Cache cargo index
	uses: actions/cache@v2
	with:
	path: ~/.cargo/git
	key: ${{ runner.os }}-cargo-git-${{ hashFiles('**/Cargo.lock') }}
	- name: Cache cargo build
	uses: actions/cache@v2
	with:
	path: target
	key: ${{ runner.os }}-cargo-build-target-${{ hashFiles('**/Cargo.lock') }}
	- name: Build
	run: cargo build --verbose
	- name: Run tests
	run: cargo test --verbose

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