error[E0423]: expected value, found builtin type `u8`
  --> $DIR/unknown-alias-defkind-anonconst-ice-116710.rs:6:43
   |
LL | struct A<const N: u32 = 1, const M: u32 = u8>;
   |                                           ^^ not a value

error[E0119]: conflicting implementations of trait `Trait` for type `A<_>`
  --> $DIR/unknown-alias-defkind-anonconst-ice-116710.rs:12:1
   |
LL | impl<const N: u32> Trait for A<N> {}
   | --------------------------------- first implementation here
LL |
LL | impl<const N: u32> Trait for A<N> {}
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ conflicting implementation for `A<_>`

error: aborting due to 2 previous errors

Some errors have detailed explanations: E0119, E0423.
For more information about an error, try `rustc --explain E0119`.