I have to agree with the first comment: Speaking as someone who was a tech trainer and writer of course materials, tutorial, etc. for a couple of decades, if ``carge-edit`` is not core to what you're trying to teach, leave it out. Get your own desires (ego) out of the way, and stick to teaching what you need to teach. Leave the distractions/side-tracks/proselytising to a separate lesson. You think of the lesson as "Giving a Working Knowledge of Rust"? Great! Then title it accordingly and don't dress it up in "futures" camouflage -- you're doing your readers/learners a disservice.
Many, many tutorials make this mistake.