Simplify return type of `get_exercise_batch` (#294) #957

	name: Build
	on:
	pull_request:
	push:
	branches:
	- master

	jobs:
	test:
	name: Test Suite
	runs-on: ubuntu-latest
	steps:
	- name: Checkout sources
	uses: actions/checkout@v2

	- name: Install stable toolchain
	uses: dtolnay/rust-toolchain@master
	with:
	toolchain: 1.73.0

	- name: Setup Rust cache
	uses: Swatinem/rust-cache@v2

	- name: Run cargo test
	run: cargo test --release

	lints:
	name: Lints
	runs-on: ubuntu-latest
	steps:
	- name: Checkout sources
	uses: actions/checkout@v2
	with:
	submodules: true

	- name: Install stable toolchain
	uses: dtolnay/rust-toolchain@master
	with:
	toolchain: 1.73.0

	- name: Install extra components
	run: rustup component add clippy rust-docs rustfmt

	- name: Setup Rust cache
	uses: Swatinem/rust-cache@v2

	- name: Run cargo fmt
	run: cargo fmt --all -- --check

	- name: Run cargo clippy
	run: cargo clippy -- -D warnings

	- name: Run rustdoc lints
	env:
	RUSTDOCFLAGS: "-D missing_docs -D rustdoc::missing_doc_code_examples"
	run: cargo doc --workspace --all-features --no-deps --document-private-items

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