Error code E0063

A struct's or struct-like enum variant's field was not provided.

Erroneous code example:

struct Foo { x: i32, y: i32, } fn main() { let x = Foo { x: 0 }; // error: missing field: `y` }

Each field should be specified exactly once. Example:

struct Foo { x: i32, y: i32, } fn main() { let x = Foo { x: 0, y: 0 }; // ok! }