pijul-clone: avoid panics on parsing remote URLs

Dependencies

• [2] MU5GSJAW Partial push and pull (WARNING: breaks the existing protocol)
• [3] I52XSRUH Massive cleanup, and simplification
• [4] L4JXJHWX pijul/*: reorganize imports and remove extern crate
• [5] 5QTMRUXN Fixing a race condition between progress bars
• [6] 76PCXGML Pushing to, and pulling from the local repository
• [7] SXEYMYF7 Fixing the bad changes in history (unfortunately, by rebooting).
• [8] UDHP4ZVB Fixing SSH asynchronicity issues

Change contents

• replacement in pijul/src/remote/mod.rs at line 5
  [3.439]→[2.885:903](∅→∅)
  − use anyhow::bail;
  [3.439]

  [3.363]
  + use anyhow::{bail, Context};
• replacement in pijul/src/remote/mod.rs at line 121
  [3.55486]→[3.55486:55534](∅→∅)
  − pub fn repo_name(&self) -> Option<String> {
  [3.55486]

  [3.55534]
  + pub fn repo_name(&self) -> Result<Option<String>, anyhow::Error> {
• replacement in pijul/src/remote/mod.rs at line 125
  [3.55672]→[3.55672:55737](∅→∅)
  − Some(s.name.split_at(sep + 1).1.to_string())
  [3.55672]

  [3.55737]
  + Ok(Some(s.name.split_at(sep + 1).1.to_string()))
• replacement in pijul/src/remote/mod.rs at line 127
  [3.55762]→[3.55762:55816](∅→∅)
  − Some(s.name.as_str().to_string())
  [3.55762]

  [3.55816]
  + Ok(Some(s.name.as_str().to_string()))
• replacement in pijul/src/remote/mod.rs at line 132
  [3.55947]→[3.55947:56008](∅→∅)
  − Some(file.to_str().unwrap().to_string())
  [3.55947]

  [3.56008]
  + Ok(Some(

  + file.to_str()

  + .context("failed to decode local repository name")?

  + .to_string(),

  + ))
• replacement in pijul/src/remote/mod.rs at line 138
  [3.56033]→[3.56033:56058](∅→∅)
  − None
  [3.56033]

  [3.56058]
  + Ok(None)
• replacement in pijul/src/remote/mod.rs at line 142
  [3.56131]→[3.56131:56195](∅→∅)
  − let url = reqwest::Url::parse(&h.url).unwrap();
  [3.56131]

  [3.56195]
  + let url =

  + reqwest::Url::parse(&h.url).context("failed to parse remote repository URL")?;
• replacement in pijul/src/remote/mod.rs at line 145
  [3.56271]→[3.56271:56314](∅→∅)
  − Some(name.to_string())
  [3.56271]

  [3.56314]
  + Ok(Some(name.to_string()))
• replacement in pijul/src/remote/mod.rs at line 147
  [3.56339]→[3.56339:56393](∅→∅)
  − url.host().map(|h| h.to_string())
  [3.56339]

  [3.56393]
  + Ok(url.host().map(|h| h.to_string()))
• replacement in pijul/src/remote/mod.rs at line 150
  [3.56425]→[3.1344:1393](∅→∅)
  − RemoteRepo::LocalChannel(_) => None,
  [3.56425]

  [3.56425]
  + RemoteRepo::LocalChannel(_) => Ok(None),
• replacement in pijul/src/commands/clone.rs at line 51
  [3.184241]→[3.184241:184297](∅→∅)
  − } else if let Some(path) = remote.repo_name() {
  [3.184241]

  [3.184297]
  + } else if let Some(path) = remote.repo_name()? {