error[E0106]: missing lifetime specifier
  --> $DIR/return-without-lifetime.rs:2:16
   |
LL | struct Foo<'a>(&usize);
   |                ^ help: consider using the named lifetime: `&'a`

error[E0106]: missing lifetime specifier
  --> $DIR/return-without-lifetime.rs:5:34
   |
LL | fn func1<'a>(_arg: &'a Thing) -> &() { unimplemented!() }
   |                                  ^ help: consider using the named lifetime: `&'a`
   |
   = help: this function's return type contains a borrowed value, but the signature does not say which one of `_arg`'s 2 lifetimes it is borrowed from

error[E0106]: missing lifetime specifier
  --> $DIR/return-without-lifetime.rs:7:35
   |
LL | fn func2<'a>(_arg: &Thing<'a>) -> &() { unimplemented!() }
   |                                   ^ help: consider using the named lifetime: `&'a`
   |
   = help: this function's return type contains a borrowed value, but the signature does not say which one of `_arg`'s 2 lifetimes it is borrowed from

error: aborting due to 3 previous errors

For more information about this error, try `rustc --explain E0106`.