Small mctp-estack improvements #9

	# This is a wrapper around ci/runtests.sh
	# ci/runtests.sh is intended to be usable locally without github.

	name: ci
	on:
	pull_request:
	push:
	branches:
	- main

	env:
	CARGO_TERM_COLOR: always

	jobs:
	ci:
	strategy:
	matrix:
	# 1.82 is the earliest version that will build. Notice if it breaks,
	# though MSRV may be bumped as needed.
	rust_version: [stable, 1.82, nightly]

	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v4

	- name: Cache Rust files
	uses: actions/cache@v4
	with:
	path: \|
	~/.cargo/
	target/ci/
	# Save a unique cache each time
	# (https://github.com/actions/cache/blob/main/tips-and-workarounds.md#update-a-cache)
	key: rust-${{ matrix.rust_version }}-${{ github.run_id }}
	# Load from the most recent match
	restore-keys: \|
	rust-${{ matrix.rust_version }}

	- name: Rustup ${{ matrix.rust_version }}
	run: \|
	rustup override set ${{ matrix.rust_version }}

	- name: Build and test ${{ matrix.rust_version }}
	run: ./ci/runtests.sh

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