CI: cargo +nightly doc with nightly lints #17

	name: Run tests and validate version

	on:
	push:
	pull_request:

	jobs:
	tests:
	runs-on: ubuntu-latest
	# Cargo.toml has "rust-version" (MSRV) 1.31. But, 1.37 is the oldest Alpine docker image. See
	# https://hub.docker.com/_/rust/tags?name=alpine&ordering=-last_updated.
	#
	# rust:1.37-alpine was failing some GitHub's extra checks:
	# https://github.com/peter-lyons-kehl/prudent/actions/runs/18773758118/job/53563574851
	#
	# Other Rust Alpine images that I've tried and they failed: rust:1.54.0-alpine.
	#
	# Also, our tests use usize::unchecked_add, which was stabilized in Rust 1.79.
	container: rust:1.79-alpine
	steps:
	- name: Checkout code
	uses: actions/checkout@v4

	- name: rustup components
	shell: sh
	run: \|
	rustup component add clippy rustfmt
	rustup install nightly --profile minimal
	rustup +nightly component add miri

	- name: Clippy, fmt
	shell: sh
	run: \|
	cargo clippy
	cargo fmt --check

	- name: Doc (stable, nightly)
	shell: sh
	run: \|
	cargo doc --no-deps --quiet
	RUSTDOCFLAGS="--forbid rustdoc::invalid_codeblock_attributes \
	--forbid rustdoc::missing_doc_code_examples \
	-Zcrate-attr=feature(rustdoc_missing_doc_code_examples)" \
	cargo +nightly doc --no-deps --quiet

	- name: Tests (debug, release, MIRI)
	shell: sh
	run: \|
	cargo test
	cargo test --release
	cargo +nightly miri test

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