Function try_to_parse_datetime_from_string 

pub fn try_to_parse_datetime_from_string<S, Formats, Format>(
    s: S,
    fmts: Formats,
) -> Option<NaiveDateTime>
where
    S: AsRef<str>,
    Formats: Iterator<Item = Format>,
    Format: AsRef<str>,

Try to parse s with all formats from fmts

The function returns an Option<NaiveDateTime>, so that the user of the function can generate the appropriate error message themselves.