1 This error indicates that during an attempt to build a struct or struct-like
2 enum variant, one of the fields was not provided. Erroneous code example:
11 let x = Foo { x: 0 }; // error: missing field: `y`
15 Each field should be specified exactly once. Example:
24 let x = Foo { x: 0, y: 0 }; // ok!