diff --git a/rust/hg-core/src/dirstate/dirstate_map.rs b/rust/hg-core/src/dirstate/dirstate_map.rs
--- a/rust/hg-core/src/dirstate/dirstate_map.rs
+++ b/rust/hg-core/src/dirstate/dirstate_map.rs
@@ -13,8 +13,8 @@
         files::normalize_case,
         hg_path::{HgPath, HgPathBuf},
     },
-    CopyMap, DirsMultiset, DirstateEntry, DirstateError, DirstateMapError, DirstateParents,
-    DirstateParseError, FastHashMap, StateMap,
+    CopyMap, DirsMultiset, DirstateEntry, DirstateError, DirstateMapError,
+    DirstateParents, DirstateParseError, FastHashMap, StateMap,
 };
 use core::borrow::Borrow;
 use micro_timer::timed;
@@ -51,7 +51,9 @@
 }
 
 impl FromIterator<(HgPathBuf, DirstateEntry)> for DirstateMap {
-    fn from_iter<I: IntoIterator<Item = (HgPathBuf, DirstateEntry)>>(iter: I) -> Self {
+    fn from_iter<I: IntoIterator<Item = (HgPathBuf, DirstateEntry)>>(
+        iter: I,
+    ) -> Self {
         Self {
             state_map: iter.into_iter().collect(),
             ..Self::default()
@@ -83,7 +85,8 @@
         old_state: EntryState,
         entry: DirstateEntry,
     ) -> Result<(), DirstateMapError> {
-        if old_state == EntryState::Unknown || old_state == EntryState::Removed {
+        if old_state == EntryState::Unknown || old_state == EntryState::Removed
+        {
             if let Some(ref mut dirs) = self.dirs {
                 dirs.add_path(filename)?;
             }
@@ -120,7 +123,8 @@
         old_state: EntryState,
         size: i32,
     ) -> Result<(), DirstateMapError> {
-        if old_state != EntryState::Unknown && old_state != EntryState::Removed {
+        if old_state != EntryState::Unknown && old_state != EntryState::Removed
+        {
             if let Some(ref mut dirs) = self.dirs {
                 dirs.delete_path(filename)?;
             }
@@ -178,13 +182,18 @@
         Ok(exists)
     }
 
-    pub fn clear_ambiguous_times(&mut self, filenames: Vec<HgPathBuf>, now: i32) {
+    pub fn clear_ambiguous_times(
+        &mut self,
+        filenames: Vec<HgPathBuf>,
+        now: i32,
+    ) {
         for filename in filenames {
             let mut changed = false;
             self.state_map
                 .entry(filename.to_owned())
                 .and_modify(|entry| {
-                    if entry.state == EntryState::Normal && entry.mtime == now {
+                    if entry.state == EntryState::Normal && entry.mtime == now
+                    {
                         changed = true;
                         *entry = DirstateEntry {
                             mtime: MTIME_UNSET,
@@ -200,12 +209,18 @@
         }
     }
 
-    pub fn non_normal_entries_remove(&mut self, key: impl AsRef<HgPath>) -> bool {
+    pub fn non_normal_entries_remove(
+        &mut self,
+        key: impl AsRef<HgPath>,
+    ) -> bool {
         self.get_non_normal_other_parent_entries()
             .0
             .remove(key.as_ref())
     }
-    pub fn non_normal_entries_union(&mut self, other: HashSet<HgPathBuf>) -> Vec<HgPathBuf> {
+    pub fn non_normal_entries_union(
+        &mut self,
+        other: HashSet<HgPathBuf>,
+    ) -> Vec<HgPathBuf> {
         self.get_non_normal_other_parent_entries()
             .0
             .union(&other)
@@ -243,7 +258,10 @@
     }
 
     pub fn set_non_normal_other_parent_entries(&mut self, force: bool) {
-        if !force && self.non_normal_set.is_some() && self.other_parent_set.is_some() {
+        if !force
+            && self.non_normal_set.is_some()
+            && self.other_parent_set.is_some()
+        {
             return;
         }
         let mut non_normal = HashSet::new();
@@ -259,7 +277,8 @@
             if *state != EntryState::Normal || *mtime == MTIME_UNSET {
                 non_normal.insert(filename.to_owned());
             }
-            if *state == EntryState::Normal && *size == SIZE_FROM_OTHER_PARENT {
+            if *state == EntryState::Normal && *size == SIZE_FROM_OTHER_PARENT
+            {
                 other_parent.insert(filename.to_owned());
             }
         }
@@ -273,7 +292,8 @@
     /// good idea.
     pub fn set_all_dirs(&mut self) -> Result<(), DirstateMapError> {
         if self.all_dirs.is_none() {
-            self.all_dirs = Some(DirsMultiset::from_dirstate(&self.state_map, None)?);
+            self.all_dirs =
+                Some(DirsMultiset::from_dirstate(&self.state_map, None)?);
         }
         Ok(())
     }
@@ -288,17 +308,26 @@
         Ok(())
     }
 
-    pub fn has_tracked_dir(&mut self, directory: &HgPath) -> Result<bool, DirstateMapError> {
+    pub fn has_tracked_dir(
+        &mut self,
+        directory: &HgPath,
+    ) -> Result<bool, DirstateMapError> {
         self.set_dirs()?;
         Ok(self.dirs.as_ref().unwrap().contains(directory))
     }
 
-    pub fn has_dir(&mut self, directory: &HgPath) -> Result<bool, DirstateMapError> {
+    pub fn has_dir(
+        &mut self,
+        directory: &HgPath,
+    ) -> Result<bool, DirstateMapError> {
         self.set_all_dirs()?;
         Ok(self.all_dirs.as_ref().unwrap().contains(directory))
     }
 
-    pub fn parents(&mut self, file_contents: &[u8]) -> Result<&DirstateParents, DirstateError> {
+    pub fn parents(
+        &mut self,
+        file_contents: &[u8],
+    ) -> Result<&DirstateParents, DirstateError> {
         if let Some(ref parents) = self.parents {
             return Ok(parents);
         }
@@ -329,7 +358,10 @@
     }
 
     #[timed]
-    pub fn read(&mut self, file_contents: &[u8]) -> Result<Option<DirstateParents>, DirstateError> {
+    pub fn read(
+        &mut self,
+        file_contents: &[u8],
+    ) -> Result<Option<DirstateParents>, DirstateError> {
         if file_contents.is_empty() {
             return Ok(None);
         }
@@ -358,7 +390,8 @@
         parents: DirstateParents,
         now: Duration,
     ) -> Result<Vec<u8>, DirstateError> {
-        let packed = pack_dirstate(&mut self.state_map, &self.copy_map, parents, now)?;
+        let packed =
+            pack_dirstate(&mut self.state_map, &self.copy_map, parents, now)?;
 
         self.dirty_parents = false;
 
@@ -371,9 +404,11 @@
             return file_fold_map;
         }
         let mut new_file_fold_map = FileFoldMap::default();
-        for (filename, DirstateEntry { state, .. }) in self.state_map.borrow() {
+        for (filename, DirstateEntry { state, .. }) in self.state_map.borrow()
+        {
             if *state == EntryState::Removed {
-                new_file_fold_map.insert(normalize_case(filename), filename.to_owned());
+                new_file_fold_map
+                    .insert(normalize_case(filename), filename.to_owned());
             }
         }
         self.file_fold_map = Some(new_file_fold_map);
@@ -462,6 +497,9 @@
         other_parent.insert(HgPathBuf::from_bytes(b"f4"));
         let entries = map.get_non_normal_other_parent_entries();
 
-        assert_eq!((&mut non_normal, &mut other_parent), (entries.0, entries.1));
+        assert_eq!(
+            (&mut non_normal, &mut other_parent),
+            (entries.0, entries.1)
+        );
     }
 }
diff --git a/rust/hg-core/src/dirstate/dirstate_tree/iter.rs b/rust/hg-core/src/dirstate/dirstate_tree/iter.rs
--- a/rust/hg-core/src/dirstate/dirstate_tree/iter.rs
+++ b/rust/hg-core/src/dirstate/dirstate_tree/iter.rs
@@ -17,7 +17,9 @@
 use std::path::PathBuf;
 
 impl FromIterator<(HgPathBuf, DirstateEntry)> for Tree {
-    fn from_iter<T: IntoIterator<Item = (HgPathBuf, DirstateEntry)>>(iter: T) -> Self {
+    fn from_iter<T: IntoIterator<Item = (HgPathBuf, DirstateEntry)>>(
+        iter: T,
+    ) -> Self {
         let mut tree = Self::new();
         for (path, entry) in iter {
             tree.insert(path, entry);
@@ -48,16 +50,30 @@
         while let Some((base_path, node)) = self.to_visit.pop_front() {
             match &node.kind {
                 NodeKind::Directory(dir) => {
-                    add_children_to_visit(&mut self.to_visit, &base_path, &dir);
+                    add_children_to_visit(
+                        &mut self.to_visit,
+                        &base_path,
+                        &dir,
+                    );
                     if let Some(file) = &dir.was_file {
-                        return Some((HgPathBuf::from_bytes(&base_path), file.entry));
+                        return Some((
+                            HgPathBuf::from_bytes(&base_path),
+                            file.entry,
+                        ));
                     }
                 }
                 NodeKind::File(file) => {
                     if let Some(dir) = &file.was_directory {
-                        add_children_to_visit(&mut self.to_visit, &base_path, &dir);
+                        add_children_to_visit(
+                            &mut self.to_visit,
+                            &base_path,
+                            &dir,
+                        );
                     }
-                    return Some((HgPathBuf::from_bytes(&base_path), file.entry));
+                    return Some((
+                        HgPathBuf::from_bytes(&base_path),
+                        file.entry,
+                    ));
                 }
             }
         }
@@ -107,10 +123,16 @@
     /// ```
     /// We need to dispatch the new symlink as `Unknown` and all the
     /// descendents of the directory it replace as `Deleted`.
-    fn dispatch_symlinked_directory(&mut self, path: impl AsRef<HgPath>, node: &Node) {
+    fn dispatch_symlinked_directory(
+        &mut self,
+        path: impl AsRef<HgPath>,
+        node: &Node,
+    ) {
         let path = path.as_ref();
-        self.shortcuts
-            .push_back((path.to_owned(), StatusShortcut::Dispatch(Dispatch::Unknown)));
+        self.shortcuts.push_back((
+            path.to_owned(),
+            StatusShortcut::Dispatch(Dispatch::Unknown),
+        ));
         for (file, _) in node.iter() {
             self.shortcuts.push_back((
                 path.join(&file),
@@ -171,10 +193,17 @@
                     if self.directory_became_symlink(canonical_path) {
                         // Potential security issue, don't do a normal
                         // traversal, force the results.
-                        self.dispatch_symlinked_directory(canonical_path, &node);
+                        self.dispatch_symlinked_directory(
+                            canonical_path,
+                            &node,
+                        );
                         continue;
                     }
-                    add_children_to_visit(&mut self.to_visit, &base_path, &dir);
+                    add_children_to_visit(
+                        &mut self.to_visit,
+                        &base_path,
+                        &dir,
+                    );
                     if let Some(file) = &dir.was_file {
                         return Some((
                             HgPathBuf::from_bytes(&base_path),
@@ -184,7 +213,11 @@
                 }
                 NodeKind::File(file) => {
                     if let Some(dir) = &file.was_directory {
-                        add_children_to_visit(&mut self.to_visit, &base_path, &dir);
+                        add_children_to_visit(
+                            &mut self.to_visit,
+                            &base_path,
+                            &dir,
+                        );
                     }
                     return Some((
                         HgPathBuf::from_bytes(&base_path),
@@ -286,7 +319,8 @@
 
         assert_eq!(tree.len(), 4);
 
-        let results: HashSet<_> = tree.iter().map(|(c, _)| c.to_owned()).collect();
+        let results: HashSet<_> =
+            tree.iter().map(|(c, _)| c.to_owned()).collect();
         dbg!(&results);
         assert!(results.contains(HgPath::new(b"foo2")));
         assert!(results.contains(HgPath::new(b"foo/bar")));
diff --git a/rust/hg-core/src/dirstate/dirstate_tree/node.rs b/rust/hg-core/src/dirstate/dirstate_tree/node.rs
--- a/rust/hg-core/src/dirstate/dirstate_tree/node.rs
+++ b/rust/hg-core/src/dirstate/dirstate_tree/node.rs
@@ -48,7 +48,11 @@
 }
 
 impl Node {
-    pub fn insert(&mut self, path: &[u8], new_entry: DirstateEntry) -> InsertResult {
+    pub fn insert(
+        &mut self,
+        path: &[u8],
+        new_entry: DirstateEntry,
+    ) -> InsertResult {
         let mut split = path.splitn(2, |&c| c == b'/');
         let head = split.next().unwrap_or(b"");
         let tail = split.next().unwrap_or(b"");
@@ -76,16 +80,24 @@
                             children: Default::default(),
                         })
                     }
-                    _ => return Node::insert_in_file(file, new_entry, head, tail),
+                    _ => {
+                        return Node::insert_in_file(
+                            file, new_entry, head, tail,
+                        )
+                    }
                 }
             }
         }
 
         match &mut self.kind {
             NodeKind::Directory(directory) => {
-                return Node::insert_in_directory(directory, new_entry, head, tail);
+                return Node::insert_in_directory(
+                    directory, new_entry, head, tail,
+                );
             }
-            NodeKind::File(_) => unreachable!("The file case has already been handled"),
+            NodeKind::File(_) => {
+                unreachable!("The file case has already been handled")
+            }
         }
     }
 
@@ -104,7 +116,8 @@
                 was_file: None,
                 children: FastHashMap::default(),
             };
-            let res = Node::insert_in_directory(&mut dir, new_entry, head, tail);
+            let res =
+                Node::insert_in_directory(&mut dir, new_entry, head, tail);
             file.was_directory = Some(Box::new(dir));
             res
         }
@@ -130,7 +143,9 @@
                                 entry: new_entry,
                             }),
                         };
-                        let old_entry = directory.children.insert(head.to_owned(), becomes_file);
+                        let old_entry = directory
+                            .children
+                            .insert(head.to_owned(), becomes_file);
                         return InsertResult {
                             did_insert: true,
                             old_entry,
@@ -192,7 +207,8 @@
                 }
                 NodeKind::File(f) => {
                     if let Some(d) = &mut f.was_directory {
-                        let RemoveResult { old_entry, .. } = Node::remove_from_directory(head, d);
+                        let RemoveResult { old_entry, .. } =
+                            Node::remove_from_directory(head, d);
                         return RemoveResult {
                             cleanup: false,
                             old_entry,
@@ -210,7 +226,8 @@
                         if res.cleanup {
                             d.children.remove(head);
                         }
-                        res.cleanup = d.children.len() == 0 && d.was_file.is_none();
+                        res.cleanup =
+                            d.children.len() == 0 && d.was_file.is_none();
                         res
                     } else {
                         empty_result
@@ -219,7 +236,8 @@
                 NodeKind::File(f) => {
                     if let Some(d) = &mut f.was_directory {
                         if let Some(child) = d.children.get_mut(head) {
-                            let RemoveResult { cleanup, old_entry } = child.remove(tail);
+                            let RemoveResult { cleanup, old_entry } =
+                                child.remove(tail);
                             if cleanup {
                                 d.children.remove(head);
                             }
diff --git a/rust/hg-core/src/dirstate/dirstate_tree/tree.rs b/rust/hg-core/src/dirstate/dirstate_tree/tree.rs
--- a/rust/hg-core/src/dirstate/dirstate_tree/tree.rs
+++ b/rust/hg-core/src/dirstate/dirstate_tree/tree.rs
@@ -136,7 +136,11 @@
 
     /// Low-level insertion method that returns the previous node (directories
     /// included).
-    fn insert_node(&mut self, path: impl AsRef<HgPath>, kind: DirstateEntry) -> Option<Node> {
+    fn insert_node(
+        &mut self,
+        path: impl AsRef<HgPath>,
+        kind: DirstateEntry,
+    ) -> Option<Node> {
         let InsertResult {
             did_insert,
             old_entry,
@@ -154,7 +158,9 @@
     pub fn get(&self, path: impl AsRef<HgPath>) -> Option<&DirstateEntry> {
         if let Some(node) = self.get_node(&path) {
             return match &node.kind {
-                NodeKind::Directory(d) => d.was_file.as_ref().map(|f| &f.entry),
+                NodeKind::Directory(d) => {
+                    d.was_file.as_ref().map(|f| &f.entry)
+                }
                 NodeKind::File(f) => Some(&f.entry),
             };
         }
@@ -168,10 +174,15 @@
 
     /// Returns a mutable reference to the entry corresponding to `path` if it
     /// exists.
-    pub fn get_mut(&mut self, path: impl AsRef<HgPath>) -> Option<&mut DirstateEntry> {
+    pub fn get_mut(
+        &mut self,
+        path: impl AsRef<HgPath>,
+    ) -> Option<&mut DirstateEntry> {
         if let Some(kind) = self.root.get_mut(path.as_ref().as_bytes()) {
             return match kind {
-                NodeKind::Directory(d) => d.was_file.as_mut().map(|f| &mut f.entry),
+                NodeKind::Directory(d) => {
+                    d.was_file.as_mut().map(|f| &mut f.entry)
+                }
                 NodeKind::File(f) => Some(&mut f.entry),
             };
         }
@@ -192,8 +203,12 @@
     }
 
     /// Remove the entry at `path` and returns it, if it exists.
-    pub fn remove(&mut self, path: impl AsRef<HgPath>) -> Option<DirstateEntry> {
-        let RemoveResult { old_entry, .. } = self.root.remove(path.as_ref().as_bytes());
+    pub fn remove(
+        &mut self,
+        path: impl AsRef<HgPath>,
+    ) -> Option<DirstateEntry> {
+        let RemoveResult { old_entry, .. } =
+            self.root.remove(path.as_ref().as_bytes());
         self.files_count = self
             .files_count
             .checked_sub(if old_entry.is_some() { 1 } else { 0 })
@@ -344,7 +359,10 @@
             size: 30,
         };
         assert_eq!(tree.insert_node(HgPath::new(b"foo"), entry), None);
-        assert_eq!(tree.insert_node(HgPath::new(b"foo/a"), removed_entry), None);
+        assert_eq!(
+            tree.insert_node(HgPath::new(b"foo/a"), removed_entry),
+            None
+        );
         // The insert should not turn `foo` into a directory as `foo` is not
         // `Removed`.
         match tree.get_node(HgPath::new(b"foo")).unwrap().kind {
@@ -516,7 +534,10 @@
             ..entry
         };
         assert_eq!(tree.insert(HgPath::new(b"a"), entry), None);
-        assert_eq!(tree.insert_node(HgPath::new(b"a/b/x"), removed_entry), None);
+        assert_eq!(
+            tree.insert_node(HgPath::new(b"a/b/x"), removed_entry),
+            None
+        );
         assert_eq!(tree.files_count, 2);
         dbg!(&tree);
         assert_eq!(tree.remove(HgPath::new(b"a")), Some(entry));