error[E0277]: the trait bound `i32: Bar<u32>` is not satisfied
  --> $DIR/cross-fn-cache-hole.rs:16:11
   |
LL |     where i32: Foo<u32, A>
   |           ^^^^^^^^^^^^^^^^ the trait `Bar<u32>` is not implemented for `i32`
   |
help: this trait has no implementations, consider adding one
  --> $DIR/cross-fn-cache-hole.rs:11:1
   |
LL | trait Bar<X> { }
   | ^^^^^^^^^^^^
   = help: see issue #48214
   = help: add `#![feature(trivial_bounds)]` to the crate attributes to enable

error: aborting due to 1 previous error

For more information about this error, try `rustc --explain E0277`.