Switch to stable rust #723

	name: build

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

	env:
	CARGO_TERM_COLOR: always

	jobs:
	build:
	runs-on: ubuntu-latest
	steps:
	- name: Install dependencies
	run: sudo apt-get update && sudo apt-get install libgtk-3-dev libgtk-layer-shell-dev
	- name: Set up
	uses: actions-rs/toolchain@v1
	with:
	toolchain: nightly
	override: true
	components: rustfmt
	- uses: actions/checkout@v2
	- uses: Swatinem/rust-cache@v1
	- uses: r7kamura/rust-problem-matchers@v1
	- name: Check formatting
	run: cargo fmt -- --check
	- name: Check with default features
	run: cargo check
	- name: Run tests
	run: cargo test
	- name: Build x11 only
	run: cargo check --no-default-features --features=x11
	- name: Build wayland only
	run: cargo check --no-default-features --features=wayland
	- name: Build no-backend
	run: cargo check --no-default-features

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