error[E0747]: type provided when a constant was expected
  --> $DIR/kind_mismatch.rs:11:38
   |
LL | impl<K> ContainsKey<K> for KeyHolder<K> {}
   |      -                               ^
   |      |
   |      help: consider changing this type parameter to a const parameter: `const K: u8`

error[E0747]: type provided when a constant was expected
  --> $DIR/kind_mismatch.rs:11:21
   |
LL | impl<K> ContainsKey<K> for KeyHolder<K> {}
   |      -              ^
   |      |
   |      help: consider changing this type parameter to a const parameter: `const K: u8`

error[E0277]: the trait bound `KeyHolder<0>: SubsetExcept<_>` is not satisfied
  --> $DIR/kind_mismatch.rs:22:45
   |
LL |     let map: KeyHolder<0> = remove_key::<_, _>();
   |                                             ^ the trait `ContainsKey<0>` is not implemented for `KeyHolder<0>`, which is required by `KeyHolder<0>: SubsetExcept<_>`
   |
note: required for `KeyHolder<0>` to implement `SubsetExcept<_>`
  --> $DIR/kind_mismatch.rs:15:28
   |
LL | impl<P, T: ContainsKey<0>> SubsetExcept<P> for T {}
   |            --------------  ^^^^^^^^^^^^^^^     ^
   |            |
   |            unsatisfied trait bound introduced here
note: required by a bound in `remove_key`
  --> $DIR/kind_mismatch.rs:17:25
   |
LL | pub fn remove_key<K, S: SubsetExcept<K>>() -> S {
   |                         ^^^^^^^^^^^^^^^ required by this bound in `remove_key`

error: aborting due to 3 previous errors

Some errors have detailed explanations: E0277, E0747.
For more information about an error, try `rustc --explain E0277`.