Displaying errors returned by the server in the protocol

Dependencies

• [2] MU5GSJAW Partial push and pull (WARNING: breaks the existing protocol)
• [3] SXEYMYF7 Fixing the bad changes in history (unfortunately, by rebooting).
• [*] FBXYP7QM Forgot to add remote::http

Change contents

• edit in pijul/src/remote/ssh.rs at line 708
  [2.769]

  [2.769]
  + super::ListLine::Error(err) => {

  + bail!(err)

  + }
• edit in pijul/src/remote/mod.rs at line 672
  [2.3339]

  [2.3339]
  + Error(String),
• replacement in pijul/src/remote/mod.rs at line 683
  [2.3716]→[2.3716:3780](∅→∅)
  − n: caps.name("num").unwrap().as_str().parse()?,
  [2.3716]

  [2.3780]
  + n: caps.name("num").unwrap().as_str().parse().unwrap(),
• edit in pijul/src/remote/mod.rs at line 689
  [2.3850]

  [2.3850]
  + if data.starts_with("error:") {

  + return Ok(ListLine::Error(data.split_at(6).1.to_string()));

  + }
• replacement in pijul/src/remote/mod.rs at line 698
  [3.79713]→[2.4146:4202](∅→∅)
  − bail!("Protocol error, offending line: {:?}", data)
  [3.79713]

  [3.79731]
  + debug!("offending line: {:?}", data);

  + bail!("Protocol error")
• edit in pijul/src/remote/http.rs at line 196
  [2.6342]

  [2.6342]
  + }

  + super::ListLine::Error(e) => {

  + let mut stderr = std::io::stderr();

  + writeln!(stderr, "{}", e)?;