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