`clippy::exit` triggers, but expect claims that it doesn't

[BenjaminBrienen]

Summary

If I expect the lint, then it claims it doesn't trigger

Reproducer

I tried this code:

#[expect(clippy::exit, reason = "TODO: use clap")] // this lint expectation is unfulfilled
fn main() {
    std::process::exit(1);
}

fn main() {
    std::process::exit(1); // usage of `process::exit`
}

Version

rustc 1.87.0 (17067e9ac 2025-05-09)
binary: rustc
commit-hash: 17067e9ac6d7ecb70e50f92c1944e545188d2359
commit-date: 2025-05-09
host: x86_64-unknown-linux-gnu
release: 1.87.0
LLVM version: 20.1.1

Additional Labels

No response

[BenjaminBrienen]

I feel like I'm losing my mind.

#![expect(unfulfilled_lint_expectations)] // this lint expectation is unfulfilled

#[expect(clippy::exit, reason = "TODO: use clap")] // this lint expectation is unfulfilled
fn main() {
    std::process::exit(1);
}

[profetia]

If you use expect, it will then warn if the lint is NOT triggered.

[BenjaminBrienen]

The expect is warning that the lint is not triggered. It should be triggered, though. If the expect is not there, then the lint does trigger!

[blyxyas]

#![expect(unfulfilled_lint_expectations)] // this lint expectation is unfulfilled
#[expect(clippy::exit, reason = "TODO: use clap")] // this lint expectation is unfulfilled
fn main() {
   std::process::exit(1);
}

What you mean is probably #![deny(unfulfilled_lint_expectations)] not #![expect(unfulfilled_lint_expectations)]

Apart from that, the lint is behaving as expected, we don't lint for that lint on fn main because it's expected that fn main can and will exit eventually.

If you expect that the lint will be triggered, that expect will fail because we don't check for that lint in main.

If the expect is not there, then the lint does trigger!

I'm not seeing that behaviour with the latest stable Clippy. If you use this:

#[deny(clippy::exit, reason = "TODO: use clap")]
fn main() {
    std::process::exit(1);
}

It won't trigger because as I said, we don't check for clippy::exit on main.

[BenjaminBrienen]

I now understand that it doesn't trigger on main. I think the first expect in this screenshot is still a bug, though.

I could have sworn that I was originally having the problem in a function that was not main, but now the expect seems to be working properly there.