error[E0283]: type annotations needed
  --> $DIR/issue-86162-2.rs:12:14
   |
LL |     Foo::bar(gen()); //<- Do not suggest `Foo::bar::<impl Clone>()`!
   |     -------- ^^^ cannot infer type of the type parameter `T` declared on the function `gen`
   |     |
   |     required by a bound introduced by this call
   |
   = note: cannot satisfy `_: Clone`
note: required by a bound in `Foo::bar`
  --> $DIR/issue-86162-2.rs:8:20
   |
LL |     fn bar(x: impl Clone) {}
   |                    ^^^^^ required by this bound in `Foo::bar`
help: consider specifying the generic argument
   |
LL |     Foo::bar(gen::<T>()); //<- Do not suggest `Foo::bar::<impl Clone>()`!
   |                 +++++

error: aborting due to 1 previous error

For more information about this error, try `rustc --explain E0283`.