diff --git a/crates/engine/src/cmd/layout/tests.rs b/crates/engine/src/cmd/layout/tests.rs
index 666c54b37..03356b892 100644
--- a/crates/engine/src/cmd/layout/tests.rs
+++ b/crates/engine/src/cmd/layout/tests.rs
@@ -158,12 +158,9 @@ fn viewport_scale_lock_and_layers() {
     // Layer 0 frozen in the viewport: nothing of the model shows.
     let list = cadcraft_render::build(s.doc().unwrap(), &Space::Paper("Layout1".into()), &cadcraft_render::Options::default());
     assert!(list.prims.iter().all(|p| p.handle != cadcraft_render::VIEWPORT_CONTENT));
-    for bad_p in [
-        json!({"handle": h, "scale": "0:0"}),
-        json!({"handle": h, "scale": -1}),
-        json!({"handle": h, "viewHeight": 0}),
-        json!({"handle": "FFFFFF"}),
-    ] {
+    for bad_p in
+        [json!({"handle": h, "scale": "0:0"}), json!({"handle": h, "scale": -1}), json!({"handle": h, "viewHeight": 0}), json!({"handle": "FFFFFF"})]
+    {
         assert!(s.execute("viewport.set", &bad_p).is_err(), "{bad_p}");
     }
 }
diff --git a/crates/geom/src/spline/tests.rs b/crates/geom/src/spline/tests.rs
index 563f84760..d953cfabd 100644
--- a/crates/geom/src/spline/tests.rs
+++ b/crates/geom/src/spline/tests.rs
@@ -73,12 +73,7 @@ fn stack_basis_matches_the_heap_basis_bit_for_bit() {
             let t = lo + (hi - lo) * i as f64 / 1000.0;
             let got = s.eval(t);
             let want = eval_ref(&s, t);
-            assert_eq!(
-                (got.x.to_bits(), got.y.to_bits()),
-                (want.x.to_bits(), want.y.to_bits()),
-                "degree {} at {t}: {got:?} vs {want:?}",
-                s.degree
-            );
+            assert_eq!((got.x.to_bits(), got.y.to_bits()), (want.x.to_bits(), want.y.to_bits()), "degree {} at {t}: {got:?} vs {want:?}", s.degree);
             let span = find_span(s.control.len() - 1, s.degree, t.clamp(lo, hi), &s.knots);
             let b = basis(span, t.clamp(lo, hi), s.degree, &s.knots);
             let r = basis_ref(span, t.clamp(lo, hi), s.degree, &s.knots);
@@ -184,10 +179,8 @@ fn bounds_keep_their_cap_over_many_spans() {
             assert!(b.contains(want.min) && b.contains(want.max), "{b:?} vs {want:?}");
         }
         let diag = want.min.dist(want.max);
-        let err = [b.min.x - want.min.x, b.min.y - want.min.y, b.max.x - want.max.x, b.max.y - want.max.y]
-            .into_iter()
-            .map(f64::abs)
-            .fold(0.0, f64::max);
+        let err =
+            [b.min.x - want.min.x, b.min.y - want.min.y, b.max.x - want.max.x, b.max.y - want.max.y].into_iter().map(f64::abs).fold(0.0, f64::max);
         assert!(err <= 1e-3 * diag, "{n} control points: {b:?} vs {want:?}");
     }
 }
diff --git a/crates/ui-egui/src/capture/tests.rs b/crates/ui-egui/src/capture/tests.rs
index ed5e85f3f..6e70aea7b 100644
--- a/crates/ui-egui/src/capture/tests.rs
+++ b/crates/ui-egui/src/capture/tests.rs
@@ -15,14 +15,7 @@ fn app() -> CadApp {
 
 /// A visible, focused, 1-ppp surface of `size` with an 8192-pixel texture side.
 fn surface(size: egui::Vec2) -> SurfaceGeometry {
-    SurfaceGeometry {
-        viewport: Some(size),
-        pixels_per_point: 1.0,
-        max_texture_side: 8192,
-        minimized: false,
-        occluded: false,
-        window_focused: true,
-    }
+    SurfaceGeometry { viewport: Some(size), pixels_per_point: 1.0, max_texture_side: 8192, minimized: false, occluded: false, window_focused: true }
 }
 
 /// Seed the admission snapshot a raw hook would have taken, then bump both epochs as an
diff --git a/crates/ui-egui/src/hatchdlg/tests.rs b/crates/ui-egui/src/hatchdlg/tests.rs
index b2c9a4b56..249c49812 100644
--- a/crates/ui-egui/src/hatchdlg/tests.rs
+++ b/crates/ui-egui/src/hatchdlg/tests.rs
@@ -234,8 +234,7 @@ fn picks_merge_into_the_state() {
 fn frames(app: &mut CadApp) -> egui::Context {
     let ctx = egui::Context::default();
     app.logic(&ctx);
-    let input =
-        egui::RawInput { screen_rect: Some(egui::Rect::from_min_size(egui::Pos2::ZERO, egui::vec2(1600.0, 1000.0))), ..Default::default() };
+    let input = egui::RawInput { screen_rect: Some(egui::Rect::from_min_size(egui::Pos2::ZERO, egui::vec2(1600.0, 1000.0))), ..Default::default() };
     // Enough frames for a window that grows each frame to show it.
     for _ in 0..30 {
         let mut output = ctx.run_ui(input.clone(), |ui| app.ui(ui));
@@ -375,10 +374,8 @@ fn hatchedit_opens_edit_mode_on_the_selection_or_asks_for_a_hatch() {
 #[test]
 fn edit_mode_on_an_out_of_range_hatch_changes_nothing_by_itself() {
     let (mut app, _) = app_with_rect();
-    let hx = app.session.execute("hatch", &json!({ "points": [[5, 5]], "scale": 5.0e6, "angle": 400 })).unwrap()["handle"]
-        .as_str()
-        .unwrap()
-        .to_string();
+    let hx =
+        app.session.execute("hatch", &json!({ "points": [[5, 5]], "scale": 5.0e6, "angle": 400 })).unwrap()["handle"].as_str().unwrap().to_string();
     app.session.set_selection(vec![Handle::parse_hex(&hx).unwrap()]);
     open_edit(&mut app);
     frames(&mut app);