Well, test failed!

I've spent a month using/testing RustRover from Jetbrains for my #Substrate and #Rust endeavours, but it wasn't up to the task. At this point, I feel like #rust_analyser is superior.

And yes, I’ve missed my #emacs setup A LOT.

As soon as I write the request for help I think of something to check.
It is the #rust_analyser extension. I hadn't realised I was turning it on and off.
This feature is controlled by the setting:

Rust-analyzer › Inlay Hints › Type Hints: Enable
Whether to show inlay type hints for variables.