Function cron_clock::line_ending

pub fn line_ending<T>(input: T) -> Result<(T, T), Err<T, u32>> where
    T: Slice<Range<usize>> + Slice<RangeFrom<usize>> + Slice<RangeTo<usize>> + InputIter + InputLength + AtEof + Compare<&'static str>, 

Recognizes an end of line (both '\n' and '\r\n')