backport Collect #239

	name: CI
	on: [push, pull_request]

	jobs:
	style:
	name: Check Style
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@master
	- name: Install Rustfmt
	run: rustup component add rustfmt
	- name: Check formatting
	run: cargo fmt --all -- --check

	test:
	name: Test
	needs: [style]
	runs-on: ubuntu-latest
	strategy:
	matrix:
	rust:
	- stable
	- beta
	- nightly
	steps:
	- uses: actions/checkout@master
	- name: Install Rust
	run: rustup update ${{ matrix.rust }} && rustup default ${{ matrix.rust }}
	- name: Run tests
	run: cargo test

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