Everytime I open my crates page on crates.io during last week I see a crate which is not mine, I did not even knew about it before - cargo-canoe. The web page looks like that:
All the version are yanked, I have googled somehow it's source code and it is a simple binary application which draw something in the terminal. What is this, why is it in my crates section? How can I delete it?
I believe it was an experiment to show how you can do possibly malicious things on crates.io. In this case, adding people as developers on a crate without their permission.
I don't know how you'd remove yourself from a crate, or even if it's possible. Perhaps someone who works with crates.io would know?
You can indeed remove yourself as an owner, as long as there's at least one other owner, using cargo owner --remove yourusername cratename. And in fact you have already been removed, we just have a bug that shows deleted records on your owners page, the fix for which is up but hasn't been deployed yet.