rust-analyzer: Rust detecting most types as "unknown" or outright getting types wrong all of the sudden

rust-analyzer version: rust-analyzer version: 0.0.0 (5342f47f4 2022-07-09)

rustc version: rustc 1.61.0 (fe5b13d68 2022-05-18)

relevant settings: (eg. client settings, or environment variables like CARGO, RUSTUP_HOME or CARGO_HOME): No relevant environment variables, but I do have Rust running inside a Nix environment.

I have issues recently that appeared out of nowhere with Rust-Analyzer suddenly being unable to infer many types, often setting them to unknown or just outright getting them wrong, even in very simple cases. For example, I have a struct that’s being parsed with clap, and originally the type inference worked when I did:

let data = example_struct::Parse()

originally it would correctly infer the type correctly as :example_struct but now it is {unknown}

When creating a new instance of a struct via an asynchronous function in one file it is able to infer the type: let result = result_struct::new().await and will successfully label the type as result_struct but then in a similar file that uses that same identical line of code, it will simply say {unknown}

Or, when calling a random function I made called restore rust-analyzer was originally able to type it successfully as an anyhow result type of Result<()> but now rust-analyzer feels it is of ?Sized impl and even weirder the rust-analyzer will often triple list the types, so rather than it just listing the types once it will repeat it 3 times so it shows as ?Sized impl ?Sized impl ?Sized impl

I thought perhaps this (even though it was initially working) out of nowhere loss in functionality was brought about by me using rust-analyzer with the local installation of Rust rather than the Nix one, but I tried launching VSCode from within the Nix repo, and even tried the nix environment switcher plugin and got the same strange analyzer results. I even tried running cargo clean and that also achieved nothing. Does this issue sound familiar to anyone?