EventResults {
    input: "-0xF",
    events: [
        Event {
            kind: Scalar,
            encoding: None,
            span: 0..4,
        },
    ],
    errors: [
        ParseError {
            context: Some(
                0..4,
            ),
            description: "integers with a radix cannot be signed",
            expected: Some(
                [],
            ),
            unexpected: Some(
                0..1,
            ),
        },
    ],
}
