DateTime::parse_from_str accepts negative year with %Y

[alex]

This contradicts the claims at: https://docs.rs/chrono/latest/chrono/format/strftime/index.html#fn1

Minimal example:

use chrono;

fn main() {
    dbg!(chrono::DateTime::parse_from_str("-1\n110723459+1002", "%Y%m%d%H%M%S%z"));
}

Reproduced with 0.4.20