use git_packetline::RemoteProgress;use nom::{    bytes::complete::{tag, take_till, take_till1},    combinator::{map_res, opt},    sequence::{preceded, terminated},};use std::convert::TryFrom; pub fn from_bytes(line: &[u8]) -> Option<RemoteProgress> {    parse_progress(line).ok().and_then(|(_, r)| {        if r.percent.is_none() && r.step.is_none() && r.max.is_none() {            None        } else {            Some(r)        }    })} fn parse_number(i: &[u8]) -> nom::IResult<&[u8], usize> {    map_res(take_till(|c: u8| !c.is_ascii_digit()), btoi::btoi)(i)} fn next_optional_percentage(i: &[u8]) -> nom::IResult<&[u8], Option<u32>> {    opt(terminated(        preceded(            take_till(|c: u8| c.is_ascii_digit()),            map_res(parse_number, u32::try_from),        ),        tag(b"%"),    ))(i)} fn next_optional_number(i: &[u8]) -> nom::IResult<&[u8], Option<usize>> {    opt(preceded(take_till(|c: u8| c.is_ascii_digit()), parse_number))(i)} fn parse_progress(line: &[u8]) -> nom::IResult<&[u8], RemoteProgress> {    let (i, action) = take_till1(|c| c == b':')(line)?;    let (i, percent) = next_optional_percentage(i)?;    let (i, step) = next_optional_number(i)?;    let (i, max) = next_optional_number(i)?;    Ok((        i,        RemoteProgress {            action: action.into(),            percent,            step,            max,        },    ))}