worktree: Add some info-level logging about added and removed repository entries (#26291)

Trying to track down a user's reported issue with parent repositories
not getting picked up.

Release Notes:

- N/A

crates/worktree/src/worktree.rs

@@ -3424,6 +3424,7 @@ impl BackgroundScannerState {
     }
 
     fn remove_path(&mut self, path: &Path) {
+        log::info!("background scanner removing path {path:?}");
         let mut new_entries;
         let removed_entries;
         {
@@ -3479,7 +3480,14 @@ impl BackgroundScannerState {
             .git_repositories
             .retain(|id, _| removed_ids.binary_search(id).is_err());
         self.snapshot.repositories.retain(&(), |repository| {
-            !repository.work_directory.path_key().0.starts_with(path)
+            let retain = !repository.work_directory.path_key().0.starts_with(path);
+            if !retain {
+                log::info!(
+                    "dropping repository entry for {:?}",
+                    repository.work_directory
+                );
+            }
+            retain
         });
 
         #[cfg(test)]
@@ -3534,12 +3542,14 @@ impl BackgroundScannerState {
         fs: &dyn Fs,
         watcher: &dyn Watcher,
     ) -> Option<LocalRepositoryEntry> {
+        log::info!("insert git reposiutory for {dot_git_path:?}");
         let work_dir_id = self
             .snapshot
             .entry_for_path(work_directory.path_key().0)
             .map(|entry| entry.id)?;
 
         if self.snapshot.git_repositories.get(&work_dir_id).is_some() {
+            log::info!("existing git repository for {work_directory:?}");
             return None;
         }
 
@@ -3547,6 +3557,7 @@ impl BackgroundScannerState {
 
         let t0 = Instant::now();
         let repository = fs.open_repo(&dot_git_abs_path)?;
+        log::info!("opened git repo for {dot_git_abs_path:?}");
 
         let repository_path = repository.path();
         watcher.add(&repository_path).log_err()?;
@@ -3605,6 +3616,7 @@ impl BackgroundScannerState {
             .git_repositories
             .insert(work_dir_id, local_repository.clone());
 
+        log::info!("inserting new local git repository");
         Some(local_repository)
     }
 }
@@ -4352,7 +4364,7 @@ impl BackgroundScanner {
             }
 
             let ancestor_dot_git = ancestor.join(*DOT_GIT);
-            log::debug!("considering ancestor: {ancestor_dot_git:?}");
+            log::info!("considering ancestor: {ancestor_dot_git:?}");
             // Check whether the directory or file called `.git` exists (in the
             // case of worktrees it's a file.)
             if self
@@ -4361,7 +4373,6 @@ impl BackgroundScanner {
                 .await
                 .is_ok_and(|metadata| metadata.is_some())
             {
-                log::debug!(".git path exists");
                 if index != 0 {
                     // We canonicalize, since the FS events use the canonicalized path.
                     if let Some(ancestor_dot_git) =
@@ -4372,7 +4383,7 @@ impl BackgroundScanner {
                             .strip_prefix(ancestor)
                             .unwrap()
                             .into();
-                        log::debug!(
+                        log::info!(
                             "inserting parent git repo for this worktree: {location_in_repo:?}"
                         );
                         // We associate the external git repo with our root folder and
@@ -4395,12 +4406,10 @@ impl BackgroundScanner {
 
                 // Reached root of git repository.
                 break;
-            } else {
-                log::debug!(".git path doesn't exist");
             }
         }
 
-        log::debug!("containing git repository: {containing_git_repository:?}");
+        log::info!("containing git repository: {containing_git_repository:?}");
 
         let (scan_job_tx, scan_job_rx) = channel::unbounded();
         {
@@ -4825,7 +4834,7 @@ impl BackgroundScanner {
                 log::error!("skipping excluded directory {:?}", job.path);
                 return Ok(());
             }
-            log::debug!("scanning directory {:?}", job.path);
+            log::info!("scanning directory {:?}", job.path);
             root_abs_path = snapshot.abs_path().clone();
             root_char_bag = snapshot.root_char_bag;
         }
@@ -5407,7 +5416,7 @@ impl BackgroundScanner {
     }
 
     fn update_git_repositories(&self, dot_git_paths: Vec<PathBuf>) -> Task<()> {
-        log::debug!("reloading repositories: {dot_git_paths:?}");
+        log::info!("reloading repositories: {dot_git_paths:?}");
 
         let mut status_updates = Vec::new();
         {