error[E0015]: cannot use `for` loop on `std::ops::Range<i32>` in constants
  --> $DIR/const-for-feature-gate.rs:4:14
   |
LL |     for _ in 0..5 {}
   |              ^^^^
   |
   = note: calls in constants are limited to constant functions, tuple structs and tuple variants

error[E0015]: cannot use `for` loop on `std::ops::Range<i32>` in constants
  --> $DIR/const-for-feature-gate.rs:4:14
   |
LL |     for _ in 0..5 {}
   |              ^^^^
   |
   = note: calls in constants 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`.