src/test/ui/index-help.stderr

   1 error[E0277]: the type `[{integer}]` cannot be indexed by `i32`
   2   --> $DIR/index-help.rs:3:7
   3    |
   4 LL |     x[0i32];
   5    |       ^^^^ slice indices are of type `usize` or ranges of `usize`
   6    |
   7    = help: the trait `SliceIndex<[{integer}]>` is not implemented for `i32`
   8    = help: the trait `SliceIndex<[T]>` is implemented for `usize`
   9    = note: required for `Vec<{integer}>` to implement `Index<i32>`
  10
  11 error: aborting due to previous error
  12
  13 For more information about this error, try `rustc --explain E0277`.