error[E0599]: no method named `the_fn` found for type `&Lib::TheStruct` in the current scope
  --> $DIR/coherence_inherent.rs:35:11
   |
LL |         s.the_fn();
   |           ^^^^^^
   |
   = help: items from traits can only be used if the trait is in scope
   = note: the following trait is implemented but not in scope, perhaps add a `use` for it:
           `use Lib::TheTrait;`

error: aborting due to previous error

For more information about this error, try `rustc --explain E0599`.