error[E0308]: mismatched types
  --> $DIR/issue-87461.rs:10:8
   |
LL |     Ok(())
   |        ^^ expected `u16`, found `()`

error[E0308]: mismatched types
  --> $DIR/issue-87461.rs:17:8
   |
LL |     Ok(())
   |        ^^ expected `u16`, found `()`

error[E0308]: mismatched types
  --> $DIR/issue-87461.rs:26:12
   |
LL |         Ok(())
   |            ^^ expected `u16`, found `()`

error: aborting due to 3 previous errors

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