error: unconstrained generic constant
  --> $DIR/abstract-consts-as-cast-5.rs:5:11
   |
LL |     bar::<{ N as usize as usize }>();
   |           ^^^^^^^^^^^^^^^^^^^^^^^
   |
   = help: try adding a `where` bound using this expression: `where [(); { N as usize as usize }]:`

error: aborting due to previous error