rust: Inline format args

[nyurik]

A minor Rust cleanup to inline format!("foo={}", foo) and similar macro calls into format!("foo={foo}").

While mostly cosmetic, this change makes it a bit easier to read format argument strings, shortens code, and makes it easier to see cases with double-referencing values causing minor performance (apparently &foo in a format! causes about 6% perf cost due to Rust compiler being unable to inline it due to dynamic invocation.

[ojeda]

Thanks for the PR! Development/changes should be submitted to the mailing list (please see https://rust-for-linux.com/contributing).

[nyurik]

Thanks @ojeda, I tried looking through all those numerous guides and got really lost. Is there a simple short tutorial that walks one step by step with as little text as possible? As someone once said, it is simple to explain something in a difficult way, but it is very difficult to explain it simply :)

[ojeda]

My pleasure Yuri!

Yeah, it can be a bit overwhelming at first. In the webpage I give a pointer to Documentation/process/submitting-patches.rst, which is a single document which explains the basics and what you need to do to post the patch (i.e. the steps/commands involved, how to write a proper commit message, etc.). Did you take a look at that one? (since you mention "numerous guides", I am not sure which you read).

If something does not seem to work, then please feel free to ask in e.g. our Zulip for help on the process.