diff --git a/tests/ui-fulldeps/stable-mir/smir_serde.rs b/tests/ui-fulldeps/stable-mir/smir_serde.rs
index f9a9a4d6a9558..957d840f7a241 100644
--- a/tests/ui-fulldeps/stable-mir/smir_serde.rs
+++ b/tests/ui-fulldeps/stable-mir/smir_serde.rs
@@ -31,13 +31,19 @@ use serde_json::to_string;
 const CRATE_NAME: &str = "input";
 
 fn serialize_to_json(_tcx: TyCtxt<'_>) -> ControlFlow<()> {
-  let path = "output.json";
-  let mut writer = BufWriter::new(std::fs::File::create(path).expect("Failed to create path"));
-  let local_crate = stable_mir::local_crate();
-  let items: Vec<Body> = stable_mir::all_local_items().iter().map(|item| { item.body() }).collect();
-  let crate_data = ( local_crate.name, items );
-  writer.write_all(to_string(&crate_data).expect("serde_json failed").as_bytes()).expect("JSON serialization failed");
-  ControlFlow::Continue(())
+    let path = "output.json";
+    let mut writer = BufWriter::new(std::fs::File::create(path)
+        .expect("Failed to create path"));
+    let local_crate = stable_mir::local_crate();
+    let items: Vec<Body> = stable_mir::all_local_items()
+        .iter()
+        .map(|item| { item.body() })
+        .collect();
+    let crate_data = ( local_crate.name, items );
+    writer.write_all(to_string(&crate_data)
+        .expect("serde_json failed")
+        .as_bytes()).expect("JSON serialization failed");
+    ControlFlow::Continue(())
 }
 
 /// This test will generate and analyze a dummy crate using the stable mir.