Code Autocompletion with Rust Analyzer appears out of date.

This sample here appears to be out of date as the setting that was changed no longer exists.

https://godot-rust.github.io/book/faq/configuration.html#how-do-i-get-code-auto-completion-with-rust-analyzer

It's possible that it is no longer necessary or that the necessary settings have changed. Eitherway the documentation should be updated to reflect this.