Function cron::not_line_ending

pub fn not_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>,
    <T as InputIter>::Item: AsChar,
    <T as InputIter>::RawItem: AsChar,