diff --git a/pmacs-gpu/src/main.rs b/pmacs-gpu/src/main.rs
index 44f57e5..923a542 100644
--- a/pmacs-gpu/src/main.rs
+++ b/pmacs-gpu/src/main.rs
@@ -925,7 +925,10 @@ impl State {
         let delta_batches = self.loro_text_delta_batches.clone()?;
         clear_loro_text_delta_batches(&delta_batches);
         let before = doc.oplog_vv();
-        if let Err(e) = doc.get_text(LORO_TEXT_CONTAINER).insert_utf8(cursor, insert) {
+        if let Err(e) = doc
+            .get_text(LORO_TEXT_CONTAINER)
+            .insert_utf8(cursor, insert)
+        {
             eprintln!("pmacs-gpu: optimistic insert failed: {e:?}");
             return None;
         }
diff --git a/src/process.rs b/src/process.rs
index 0b88352..307d56c 100644
--- a/src/process.rs
+++ b/src/process.rs
@@ -491,8 +491,9 @@ impl StdinWriter {
                     let result = sink.write_all(&bytes).and_then(|()| sink.flush());
                     thread_queued.fetch_sub(bytes.len(), Ordering::Relaxed);
                     if let Err(e) = result {
-                        *thread_error.lock().expect("stdin writer error mutex poisoned") =
-                            Some(e.to_string());
+                        *thread_error
+                            .lock()
+                            .expect("stdin writer error mutex poisoned") = Some(e.to_string());
                         return;
                     }
                 }
diff --git a/tests/cua_region_acceptance.rs b/tests/cua_region_acceptance.rs
index 26eec00..e7e6676 100644
--- a/tests/cua_region_acceptance.rs
+++ b/tests/cua_region_acceptance.rs
@@ -60,7 +60,10 @@ fn backspace_deletes_the_shift_selected_region() {
     let (_, region_active, _) = probe(&s);
     assert!(region_active, "shift+arrows must leave an active region");
 
-    s.dispatch_key(FrontendId::LOCAL, key(KeyCode::Backspace, KeyModifiers::NONE));
+    s.dispatch_key(
+        FrontendId::LOCAL,
+        key(KeyCode::Backspace, KeyModifiers::NONE),
+    );
 
     let (text, region_active, cursor) = probe(&s);
     assert_eq!(text, "he", "backspace must delete the whole region");
@@ -68,7 +71,10 @@ fn backspace_deletes_the_shift_selected_region() {
     assert_eq!(cursor, 2, "cursor lands at the deleted region's start");
 
     // Without a region, backspace keeps single-codepoint semantics.
-    s.dispatch_key(FrontendId::LOCAL, key(KeyCode::Backspace, KeyModifiers::NONE));
+    s.dispatch_key(
+        FrontendId::LOCAL,
+        key(KeyCode::Backspace, KeyModifiers::NONE),
+    );
     let (text, _, cursor) = probe(&s);
     assert_eq!(text, "h", "no region ⇒ plain single-codepoint backspace");
     assert_eq!(cursor, 1);
@@ -87,7 +93,10 @@ fn ctrl_backspace_deletes_the_previous_word() {
         key(KeyCode::Backspace, KeyModifiers::CONTROL),
     );
     let (text, _, cursor) = probe(&s);
-    assert_eq!(text, "alpha ", "C-BS deletes back through the previous word");
+    assert_eq!(
+        text, "alpha ",
+        "C-BS deletes back through the previous word"
+    );
     assert_eq!(cursor, 6);
 
     s.dispatch_key(FrontendId::LOCAL, key(KeyCode::Left, KeyModifiers::CONTROL));
diff --git a/tests/m4_acceptance.rs b/tests/m4_acceptance.rs
index b7cc9d9..9e1dfd9 100644
--- a/tests/m4_acceptance.rs
+++ b/tests/m4_acceptance.rs
@@ -5230,8 +5230,14 @@ fn m4_lua_bundle_debounces_did_change_per_keystroke() {
         )
         .eval()
         .expect("flush + count");
-    assert_eq!(sent, 1, "explicit flush ships exactly one coalesced didChange");
-    assert_eq!(version, 4, "flush carries the latest version (v1 open + 3 edits)");
+    assert_eq!(
+        sent, 1,
+        "explicit flush ships exactly one coalesced didChange"
+    );
+    assert_eq!(
+        version, 4,
+        "flush carries the latest version (v1 open + 3 edits)"
+    );
 
     // Time-based flush: one more edit, then tick after the quiet
     // window (75ms in the bundle) has elapsed.