error[E0277]: the type `str` cannot be indexed by `{integer}` --> $DIR/str-idx.rs:3:19 | LL | let _: u8 = s[4]; | ^ string indices are ranges of `usize` | = help: the trait `SliceIndex` is not implemented for `{integer}` = note: you can use `.chars().nth()` or `.bytes().nth()` for more information, see chapter 8 in The Book: = help: the trait `SliceIndex<[T]>` is implemented for `usize` = note: required for `str` to implement `Index<{integer}>` error[E0277]: the type `str` cannot be indexed by `{integer}` --> $DIR/str-idx.rs:4:19 | LL | let _ = s.get(4); | --- ^ string indices are ranges of `usize` | | | required by a bound introduced by this call | = help: the trait `SliceIndex` is not implemented for `{integer}` = note: you can use `.chars().nth()` or `.bytes().nth()` for more information, see chapter 8 in The Book: = help: the trait `SliceIndex<[T]>` is implemented for `usize` note: required by a bound in `core::str::::get` --> $SRC_DIR/core/src/str/mod.rs:LL:COL error[E0277]: the type `str` cannot be indexed by `{integer}` --> $DIR/str-idx.rs:5:29 | LL | let _ = s.get_unchecked(4); | ------------- ^ string indices are ranges of `usize` | | | required by a bound introduced by this call | = help: the trait `SliceIndex` is not implemented for `{integer}` = note: you can use `.chars().nth()` or `.bytes().nth()` for more information, see chapter 8 in The Book: = help: the trait `SliceIndex<[T]>` is implemented for `usize` note: required by a bound in `core::str::::get_unchecked` --> $SRC_DIR/core/src/str/mod.rs:LL:COL error[E0277]: the type `str` cannot be indexed by `char` --> $DIR/str-idx.rs:6:19 | LL | let _: u8 = s['c']; | ^^^ string indices are ranges of `usize` | = help: the trait `SliceIndex` is not implemented for `char` = note: required for `str` to implement `Index` error: aborting due to 4 previous errors For more information about this error, try `rustc --explain E0277`.