error[E0015]: cannot use `for` loop on `std::ops::Range<usize>` in constant functions
  --> $DIR/const-fn-error.rs:5:14
   |
LL |     for i in 0..x {
   |              ^^^^
   |
   = note: calls in constant functions are limited to constant functions, tuple structs and tuple variants

error[E0015]: cannot use `for` loop on `std::ops::Range<usize>` in constant functions
  --> $DIR/const-fn-error.rs:5:14
   |
LL |     for i in 0..x {
   |              ^^^^
   |
   = note: calls in constant functions are limited to constant functions, tuple structs and tuple variants
   = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`

error: aborting due to 2 previous errors

For more information about this error, try `rustc --explain E0015`.