Lints

Flatten crate structure again #3020

	name: Lints

	on:
	merge_group:
	pull_request:
	types: [synchronize, opened, reopened, ready_for_review]
	push:
	branches:
	- master

	concurrency:
	group: ${{ github.workflow }}-${{ github.ref \|\| github.run_id }}
	cancel-in-progress: ${{ github.ref != 'refs/heads/master' }}

	jobs:
	lints:
	name: Various lints
	timeout-minutes: 30
	runs-on: ubuntu-24.04

	steps:
	- uses: actions/checkout@v4
	- uses: dtolnay/rust-toolchain@master
	with:
	components: rustfmt, clippy
	targets: riscv32im-unknown-none-elf
	# TODO(Matthias): see whether we can keep this in sync with rust-toolchain.toml automatically?
	toolchain: nightly-2024-12-06
	- name: Cargo cache
	uses: actions/cache@v4
	with:
	path: \|
	~/.cargo/bin/
	~/.cargo/registry/index/
	~/.cargo/registry/cache/
	~/.cargo/git/db/
	target/
	ceno_rt/target/
	example/target/
	key: lint-${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}
	restore-keys: lint-${{ runner.os }}-cargo-

	- name: Install cargo make
	run: \|
	cargo make --version \|\| cargo install cargo-make
	- name: Check code format
	run: cargo fmt --all --check

	- name: Run clippy
	env:
	RUSTFLAGS: "-Dwarnings"
	run: \|
	cargo check --workspace --all-targets
	# We have a lot of code under #[cfg(not(debug_assertions))] and similar,
	# so we need to run cargo check in release mode, too:
	cargo check --workspace --all-targets --release
	cargo make clippy
	# Same for clippy:
	cargo clippy --workspace --all-targets --release

	- name: Install taplo
	run: taplo --version \|\| cargo install taplo-cli
	- name: Run taplo
	run: taplo fmt --check --diff

Provide feedback