Fix a panic when switching between channels that have different files

Dependencies

• [2] YN63NUZO Sanakirja 1.0
• [3] HMMMKONL Fixing alive vertices
• [4] QMTANHVN Reset: only output changed files
• [5] CCLLB7OI Upgrading to Sanakirja 0.15 + version bump
• [6] VNBLGT6G Do not output unmodified files when resetting (fix)
• [7] XA23FMQM Reset only files that have been modified
• [8] LGEJSLTY Fixing output (including its uses in reset and pull)
• [9] VO5OQW4W Removing anyhow in libpijul
• [10] 27PYHR6L Making the get_latest_touch function (useful to make archives) public in libpijul
• [11] 3AMEP2Y5 More convenient interface for channels
• [12] I52XSRUH Massive cleanup, and simplification
• [13] BXD3IQYN Fixing --features git
• [14] 3KRGVQFU Do not update the mtime of unmodified files
• [15] SXEYMYF7 Fixing the bad changes in history (unfortunately, by rebooting).
• [16] GHO6DWPI Refactoring iterators
• [*] MU5GSJAW Partial push and pull (WARNING: breaks the existing protocol)
• [*] K6GWUOD5 Styling progress bars

Change contents

• replacement in pijul/src/commands/reset.rs at line 127
  [3.1394]→[3.1394:1395](∅→∅)
  −
  [3.1394]

  [3.1395]
  + let mut paths = Vec::with_capacity(inodes.len());
• replacement in pijul/src/commands/reset.rs at line 129
  [3.1438]→[3.1438:1499](∅→∅)
  − let (path, _) = libpijul::fs::find_path(
  [3.1438]

  [3.1499]
  + if let Some((path, _)) = libpijul::fs::find_path(
• replacement in pijul/src/commands/reset.rs at line 135
  [3.1672]→[3.1672:1696](∅→∅)
  − )?;
  [3.1672]

  [3.1696]
  + )? {

  + paths.push(path)

  + } else {

  + paths.clear();

  + break;

  + }

  + }

  + for path in paths.iter() {
• edit in pijul/src/commands/reset.rs at line 153
  [3.2075]

  [3.101179]
  + if paths.is_empty() {

  + txn.output_repository_no_pending(

  + &mut repo.working_copy,

  + &repo.changes,

  + &mut channel,

  + "",

  + true,

  + None,

  + )?;

  + }
• replacement in pijul/src/commands/pushpull.rs at line 458
  [3.343]→[3.343:369](∅→∅),[3.369]→[2.12019:12120](∅→∅)
  − touched_paths

  − .push(libpijul::fs::find_path(&repo.changes, &txn, &channel.borrow(), false, *i)?.0)
  [3.343]

  [3.469]
  + if let Some((path, _)) =

  + libpijul::fs::find_path(&repo.changes, &txn, &channel.borrow(), false, *i)?

  + {

  + touched_paths.push(path)

  + } else {

  + touched_paths.clear();

  + break;

  + }
• edit in pijul/src/commands/pushpull.rs at line 484
  [18.11136]

  [19.2211]
  + if touched_paths.is_empty() {

  + txn.output_repository_no_pending(

  + &mut repo.working_copy,

  + &repo.changes,

  + &mut channel,

  + "",

  + true,

  + None,

  + )?;

  + }

  +
• edit in pijul/src/commands/apply.rs at line 79
  [3.1107]

  [3.1146]
  + let mut touched_files = Vec::with_capacity(touched.len());
• replacement in pijul/src/commands/apply.rs at line 81
  [3.1173]→[3.1173:1293](∅→∅)
  − let (path, _) =

  − libpijul::fs::find_path(&repo.changes, &txn, &channel.borrow(), false, i)?;
  [3.1173]

  [3.1293]
  + if let Some((path, _)) =

  + libpijul::fs::find_path(&repo.changes, &txn, &channel.borrow(), false, i)?

  + {

  + touched_files.push(path)

  + } else {

  + touched_files.clear();

  + break;

  + }

  + }

  + for path in touched_files.iter() {
• edit in pijul/src/commands/apply.rs at line 100
  [3.1560]

  [3.196314]
  + if !touched_files.is_empty() {

  + txn.output_repository_no_pending(

  + &mut repo.working_copy,

  + &repo.changes,

  + &mut channel,

  + "",

  + true,

  + None,

  + )?;

  + }
• replacement in libpijul/src/pristine/mod.rs at line 1879
  [3.489]→[3.77261:77352](∅→∅)
  − let (path, _) = crate::fs::find_path(changes, txn, channel, true, file_).unwrap();
  [3.489]

  [3.590]
  + let (path, _) = crate::fs::find_path(changes, txn, channel, true, file_).unwrap().unwrap();
• replacement in libpijul/src/lib.rs at line 555
  [2.128217]→[3.98460:98541](∅→∅),[3.731981]→[3.98460:98541](∅→∅)
  − ) -> Result<(String, bool), output::FileError<C::Error, Self::GraphError>> {
  [2.128217]

  [3.732030]
  + ) -> Result<Option<(String, bool)>, output::FileError<C::Error, Self::GraphError>> {
• replacement in libpijul/src/lib.rs at line 568
  [3.732453]→[3.98631:98712](∅→∅)
  − ) -> Result<(String, bool), output::FileError<C::Error, Self::GraphError>> {
  [3.732453]

  [3.732502]
  + ) -> Result<Option<(String, bool)>, output::FileError<C::Error, Self::GraphError>> {
• replacement in libpijul/src/fs.rs at line 836
  [3.761102]→[3.113877:113958](∅→∅)
  − ) -> Result<(String, bool), crate::output::FileError<C::Error, T::GraphError>> {
  [3.761102]

  [3.761147]
  + ) -> Result<Option<(String, bool)>, crate::output::FileError<C::Error, T::GraphError>> {
• replacement in libpijul/src/fs.rs at line 846
  [3.761463]→[3.6158:6237](∅→∅)
  − let inode_vertex = txn.find_block_end(txn.graph(channel), v).unwrap();
  [3.761463]

  [2.133097]
  + let inode_vertex = match txn.find_block_end(txn.graph(channel), v) {

  + Ok(block) => block,

  + Err(BlockError::Block { block, .. }) => {

  + debug!("block not found {:?}", block);

  + assert!(path.is_empty());

  + return Ok(None)

  + },

  + Err(BlockError::Txn(t)) => return Err(crate::output::FileError::Txn(t)),

  + };
• replacement in libpijul/src/fs.rs at line 910
  [3.763251]→[3.763251:763287](∅→∅)
  − Ok((path.join("/"), all_alive))
  [3.763251]

  [3.628]
  + Ok(Some((path.join("/"), all_alive)))