1 files changed, 1 insertions, 3 deletions
diff --git a/compiler/rustc_data_structures/src/vec_map.rs b/compiler/rustc_data_structures/src/vec_map.rs
index 86be0bd87..d1a99bcae 100644
--- a/compiler/rustc_data_structures/src/vec_map.rs
+++ b/compiler/rustc_data_structures/src/vec_map.rs
@@ -1,6 +1,5 @@
 use std::borrow::Borrow;
 use std::fmt::Debug;
-use std::iter::FromIterator;
 use std::slice::Iter;
 use std::vec::IntoIter;
 
@@ -72,8 +71,7 @@ where
         // This should return just one element, otherwise it's a bug
         assert!(
             filter.next().is_none(),
-            "Collection {:#?} should have just one matching element",
-            self
+            "Collection {self:#?} should have just one matching element"
         );
         Some(value)
     }