error[E0277]: the type `[i32]` cannot be indexed by `i32` --> $DIR/slice-index.rs:8:7 | LL | x[1i32]; | ^^^^ slice indices are of type `usize` or ranges of `usize` | = help: the trait `SliceIndex<[i32]>` is not implemented for `i32` = help: the trait `SliceIndex<[T]>` is implemented for `usize` = note: required for `[i32]` to implement `Index<i32>` error[E0277]: the type `[i32]` cannot be indexed by `RangeTo<i32>` --> $DIR/slice-index.rs:9:7 | LL | x[..1i32]; | ^^^^^^ slice indices are of type `usize` or ranges of `usize` | = help: the trait `SliceIndex<[i32]>` is not implemented for `RangeTo<i32>` = help: the following other types implement trait `SliceIndex<T>`: <RangeTo<usize> as SliceIndex<str>> <RangeTo<usize> as SliceIndex<[T]>> = note: required for `[i32]` to implement `Index<RangeTo<i32>>` error: aborting due to 2 previous errors For more information about this error, try `rustc --explain E0277`.