error[E0106]: missing lifetime specifier
 --> tests/ui/expected_named.rs:5:36
  |
5 |         fn borrowed() -> UniquePtr<Borrowed>;
  |                                    ^^^^^^^^ expected named lifetime parameter
  |
  = help: this function's return type contains a borrowed value, but there is no value for it to be borrowed from
help: consider using the `'static` lifetime, but this is uncommon unless you're returning a borrowed value from a `const` or a `static`, or if you will only have owned values
  |
5 |         fn borrowed() -> UniquePtr<Borrowed<'static>>;
  |                                            +++++++++