error: hidden lifetime parameters in types are deprecated
  --> $DIR/issue-91763.rs:8:20
   |
LL | fn f() -> Ptr<Thing>;
   |                    ^ expected lifetime parameter
   |
note: the lint level is defined here
  --> $DIR/issue-91763.rs:3:9
   |
LL | #![deny(elided_lifetimes_in_paths)]
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^
help: indicate the anonymous lifetime
   |
LL | fn f() -> Ptr<Thing><'_>;
   |                     ++++

error: aborting due to 1 previous error