error[E0577]: expected module, found unresolved item `crate::r#mod`
  --> $DIR/issue-61732.rs:3:8
   |
LL | pub(in crate::r#mod) fn main() {}
   |        ^^^^^^^^^^^^ not a module

error: Compilation failed, aborting rustdoc

error: aborting due to 2 previous errors

For more information about this error, try `rustc --explain E0577`.