`unnecessary_unwrap` emitted twice in closure

[samueltardieu]

Summary

The unnecessary_unwrap can be emitted twice in a closure.

Reproducer

I tried this code:

fn f(x: Option<String>) {
    _ = || {
        if x.is_some() {
            _ = x.unwrap();
        }
    };
}

fn main() {
    f(Some(String::new()));
}

and ran clippy-driver t.rs -Z deduplicate-diagnostics=no

I expected to see this happen: one unnecessary_unwrap lint

Instead, this happened:

warning: called `unwrap` on `x` after checking its variant with `is_some`
 --> t.rs:4:17
  |
3 |         if x.is_some() {
  |         -------------- help: try: `if let Some(<item>) = x`
4 |             _ = x.unwrap();
  |                 ^^^^^^^^^^
  |
  = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_unwrap
  = note: `#[warn(clippy::unnecessary_unwrap)]` on by default

warning: called `unwrap` on `x` after checking its variant with `is_some`
 --> t.rs:4:17
  |
3 |         if x.is_some() {
  |         -------------- help: try: `if let Some(<item>) = x`
4 |             _ = x.unwrap();
  |                 ^^^^^^^^^^
  |
  = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_unwrap
  = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`

warning: 2 warnings emitted

Version

rustc 1.88.0-nightly (e9f8103f9 2025-05-07)
binary: rustc
commit-hash: e9f8103f93f8ce2fa2c15c0c6796ec821f8ae15d
commit-date: 2025-05-07
host: x86_64-unknown-linux-gnu
release: 1.88.0-nightly
LLVM version: 20.1.4

Additional Labels

No response

[relaxcn]

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