error[E0080]: entering unreachable code
  --> $DIR/unknown-when-no-type-parameter.rs:11:10
   |
LL |     [(); size_of::<<() as Project>::Assoc>()];
   |          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ evaluation of `foo::{constant#0}` failed here

error: aborting due to 1 previous error

For more information about this error, try `rustc --explain E0080`.