|  | 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<str>` is not implemented for `{integer}` | 
|  | = note: you can use `.chars().nth()` or `.bytes().nth()` | 
|  | for more information, see chapter 8 in The Book: <https://doc.rust-lang.org/book/ch08-02-strings.html#indexing-into-strings> | 
|  | = help: the following other types implement trait `SliceIndex<T>`: | 
|  | `usize` implements `SliceIndex<ByteStr>` | 
|  | `usize` implements `SliceIndex<[T]>` | 
|  | = 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<str>` is not implemented for `{integer}` | 
|  | = note: you can use `.chars().nth()` or `.bytes().nth()` | 
|  | for more information, see chapter 8 in The Book: <https://doc.rust-lang.org/book/ch08-02-strings.html#indexing-into-strings> | 
|  | = help: the following other types implement trait `SliceIndex<T>`: | 
|  | `usize` implements `SliceIndex<ByteStr>` | 
|  | `usize` implements `SliceIndex<[T]>` | 
|  | note: required by a bound in `core::str::<impl 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<str>` is not implemented for `{integer}` | 
|  | = note: you can use `.chars().nth()` or `.bytes().nth()` | 
|  | for more information, see chapter 8 in The Book: <https://doc.rust-lang.org/book/ch08-02-strings.html#indexing-into-strings> | 
|  | = help: the following other types implement trait `SliceIndex<T>`: | 
|  | `usize` implements `SliceIndex<ByteStr>` | 
|  | `usize` implements `SliceIndex<[T]>` | 
|  | note: required by a bound in `core::str::<impl 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<str>` is not implemented for `char` | 
|  | = note: required for `str` to implement `Index<char>` | 
|  |  | 
|  | error: aborting due to 4 previous errors | 
|  |  | 
|  | For more information about this error, try `rustc --explain E0277`. |