error[E0228]: the lifetime bound for this object type cannot be deduced from context; please supply an explicit bound
  --> $DIR/object-lifetime-default-dyn-binding-nonstatic3.rs:16:36
   |
LL | fn bar(x: &str) -> &dyn Foo<Item = dyn Bar> { &() }
   |                                    ^^^^^^^

error[E0277]: the trait bound `(): Foo<'_>` is not satisfied
  --> $DIR/object-lifetime-default-dyn-binding-nonstatic3.rs:16:47
   |
LL | fn bar(x: &str) -> &dyn Foo<Item = dyn Bar> { &() }
   |                                               ^^^ the trait `Foo<'_>` is not implemented for `()`
   |
help: this trait has no implementations, consider adding one
  --> $DIR/object-lifetime-default-dyn-binding-nonstatic3.rs:4:1
   |
LL | trait Foo<'a> {
   | ^^^^^^^^^^^^^
   = note: required for the cast from `&()` to `&dyn Foo<'_, Item = dyn Bar>`

error: aborting due to 2 previous errors

Some errors have detailed explanations: E0228, E0277.
For more information about an error, try `rustc --explain E0228`.