ices/79461.sh: fixed with errors

[github-actions]

Issue: rust-lang/rust#79461

#!/bin/bash

cat > out.rs <<'EOF'

trait IAmATrait {
    type Item;
    fn function(&self) -> Self::Item;
}

struct IAmAnObject(usize);

impl IAmATrait for IAmAnObject {
    type Item = _;
    fn function(&self) -> Self::Item {
        self.0
    }
}

fn main() {}

EOF

rustdoc --edition=2021 out.rs

=== stdout ===
=== stderr ===
error[E0121]: the placeholder `_` is not allowed within types on item signatures for associated types
  --> out.rs:10:17
   |
10 |     type Item = _;
   |                 ^ not allowed in type signatures

error: aborting due to previous error

For more information about this error, try `rustc --explain E0121`.
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