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Attempted to access a field on a primitive type.
Erroneous code example:
```compile_fail,E0610
let x: u32 = 0;
println!("{}", x.foo); // error: `{integer}` is a primitive type, therefore
// doesn't have fields
```
Primitive types are the most basic types available in Rust and don't have
fields. To access data via named fields, struct types are used. Example:
```
// We declare struct called `Foo` containing two fields:
struct Foo {
x: u32,
y: i64,
}
// We create an instance of this struct:
let variable = Foo { x: 0, y: -12 };
// And we can now access its fields:
println!("x: {}, y: {}", variable.x, variable.y);
```
For more information about [primitives] and [structs], take a look at the Book.
[primitives]: https://doc.rust-lang.org/book/ch03-02-data-types.html
[structs]: https://doc.rust-lang.org/book/ch05-00-structs.html
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