error[E0277]: the trait bound `[Adt; std::mem::size_of::<Self::Assoc>()]: Foo` is not satisfied
  --> $DIR/dont-evaluate-array-len-on-err-1.rs:15:10
   |
LL |         <[Adt; std::mem::size_of::<Self::Assoc>()] as Foo>::bar()
   |          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `Foo` is not implemented for `[Adt; std::mem::size_of::<Self::Assoc>()]`
   |
help: this trait has no implementations, consider adding one
  --> $DIR/dont-evaluate-array-len-on-err-1.rs:9:1
   |
LL | trait Foo {
   | ^^^^^^^^^

error: aborting due to 1 previous error

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