1 files changed, 2 insertions, 2 deletions
diff --git a/compiler/rustc_data_structures/src/obligation_forest/graphviz.rs b/compiler/rustc_data_structures/src/obligation_forest/graphviz.rs
index 3a268e4b4..4b6aa1165 100644
--- a/compiler/rustc_data_structures/src/obligation_forest/graphviz.rs
+++ b/compiler/rustc_data_structures/src/obligation_forest/graphviz.rs
@@ -30,7 +30,7 @@ impl<O: ForestObligation> ObligationForest<O> {
 
         let counter = COUNTER.fetch_add(1, Ordering::AcqRel);
 
-        let file_path = dir.as_ref().join(format!("{:010}_{}.gv", counter, description));
+        let file_path = dir.as_ref().join(format!("{counter:010}_{description}.gv"));
 
         let mut gv_file = BufWriter::new(File::create(file_path).unwrap());
 
@@ -47,7 +47,7 @@ impl<'a, O: ForestObligation + 'a> dot::Labeller<'a> for &'a ObligationForest<O>
     }
 
     fn node_id(&self, index: &Self::Node) -> dot::Id<'_> {
-        dot::Id::new(format!("obligation_{}", index)).unwrap()
+        dot::Id::new(format!("obligation_{index}")).unwrap()
     }
 
     fn node_label(&self, index: &Self::Node) -> dot::LabelText<'_> {