`use_debug` does not work for `format_args!()`

Lint name: use_debug

I tried this code:

fn main() {
    format_args!("{:?}", "Hello, world!");
}

I expected to see this happen: the lint should fail, because I am using debug formatting. Actually I am using the log crate and was surprised, that I do not get a warning from clippy. I am just guessing that fixing this for format_args!() also will fix the log!() macros that internally depend on it.

Meta

Rust version (rustc -Vv):

rustc 1.58.0-nightly (936f2600b 2021-11-22)
binary: rustc
commit-hash: 936f2600b6c903b04387f74ed5cbce88bb06d243
commit-date: 2021-11-22
host: x86_64-unknown-linux-gnu
release: 1.58.0-nightly
LLVM version: 13.0.0

Start by reproducing the issue with the provided format_args! example and then trace the use_debug lint entry point in rust-clippy. Check whether the lint sees debug formatting inside format_args! and verify that the expected warning also covers the reported logging-macro case.