ices/72076.rs: fixed with errors

=== stdout ===
=== stderr ===
error[E0308]: mismatched types
 --> /home/runner/work/glacier/glacier/ices/72076.rs:3:23
  |
3 |     fn f() -> Self::S {}
  |                       ^^ expected associated type, found `()`
  |
  = note: expected associated type `<Self as X>::S`
                   found unit type `()`
  = help: consider constraining the associated type `<Self as X>::S` to `()` or calling a method that returns `<Self as X>::S`
  = note: for more information, visit https://doc.rust-lang.org/book/ch19-03-advanced-traits.html

error: aborting due to previous error

For more information about this error, try `rustc --explain E0308`.
==============

Author: rustbot