error[E0117]: only traits defined in the current crate can be implemented for arbitrary types
  --> $DIR/coherence-pair-covered-uncovered-1.rs:15:1
   |
LL | impl<T, U> Remote1<Pair<T, Local<U>>> for i32 { }
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ impl doesn't use types inside crate
   |
   = note: `i32` is not defined in the current create
   = note: `lib::Pair<T, Local<U>>` is not defined in the current create
   = note: define and implement a trait or new type instead

error: aborting due to previous error

For more information about this error, try `rustc --explain E0117`.