Auto merge of #54215 - kennytm:rollup, r=kennytm

Auto merge of #54215 - kennytm:rollup, r=kennytm

Rollup of 8 pull requests

Successful merges:

 - #53218 (Add a implementation of `From` for converting `&'a Option<T>` into `Option<&'a T>`)
 - #54024 (Fix compiling some rustc crates to wasm)
 - #54095 (Rename all mentions of `nil` to `unit`)
 - #54173 (Suggest valid crate type if invalid crate type is found)
 - #54194 (Remove println!() statement from HashMap unit test)
 - #54203 (Fix the stable release of os_str_str_ref_eq)
 - #54207 (re-mark the never docs as unstable)
 - #54210 (Update Cargo)

Failed merges:

r? @ghost