Return the freed element in arena #120

	name: CI

	on: [push, pull_request]

	jobs:
	build:
	name: 'Build'
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v2

	- name: Get stable toolchain
	uses: actions-rs/toolchain@v1
	with:
	toolchain: stable
	override: true

	- name: Build
	run: cargo build --verbose

	run_unit_tests:
	name: 'Run unit tests'
	needs: [build]
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v2

	- name: Get stable toolchain
	uses: actions-rs/toolchain@v1
	with:
	toolchain: stable
	override: true

	- name: Test
	run: cargo test

	type_check_prelude:
	name: 'Type check Prelude.hs'
	needs: [build]
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v2

	- name: Get stable toolchain
	uses: actions-rs/toolchain@v1
	with:
	toolchain: stable
	override: true

	- name: 'Type check Prelude.hs'
	run: cargo run --bin h10

	check_formatting:
	name: 'Check formatting'
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v2

	- name: Get Rust stable toolchain
	uses: actions-rs/toolchain@v1
	with:
	toolchain: stable
	components: rustfmt
	override: true

	- name: Check formatting
	run: cargo fmt --all -- --check

	check_lints:
	name: 'Check lints'
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v2

	- name: Get Rust stable toolchain
	uses: actions-rs/toolchain@v1
	with:
	toolchain: stable
	override: true

	- name: Check lints
	run: cargo clippy --all-targets --all

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