src/test/ui/const-generics/issues/issue-67945-3.min.stderr

   1 error: generic parameters may not be used in const operations
   2   --> $DIR/issue-67945-3.rs:11:23
   3    |
   4 LL |         let x: Option<S> = None;
   5    |                       ^ cannot perform const operation using `S`
   6    |
   7    = note: type parameters may not be used in const expressions
   8    = help: use `#![feature(generic_const_exprs)]` to allow generic const expressions
   9
  10 error[E0392]: parameter `S` is never used
  11   --> $DIR/issue-67945-3.rs:9:12
  12    |
  13 LL | struct Bug<S> {
  14    |            ^ unused parameter
  15    |
  16    = help: consider removing `S`, referring to it in a field, or using a marker such as `PhantomData`
  17    = help: if you intended `S` to be a const parameter, use `const S: usize` instead
  18
  19 error: aborting due to 2 previous errors
  20
  21 For more information about this error, try `rustc --explain E0392`.