diff --git a/compiler/rustc_const_eval/src/interpret/memory.rs b/compiler/rustc_const_eval/src/interpret/memory.rs
index de6200ef0125..86d5bb37d55a 100644
--- a/compiler/rustc_const_eval/src/interpret/memory.rs
+++ b/compiler/rustc_const_eval/src/interpret/memory.rs
@@ -306,9 +306,7 @@ impl<'mir, 'tcx: 'mir, M: Machine<'mir, 'tcx>> InterpCx<'mir, 'tcx, M> {
         }
         if alloc_kind != kind {
             throw_ub_format!(
-                "deallocating {alloc_id:?}, which is {} memory, using {} deallocation operation",
-                alloc_kind,
-                kind
+                "deallocating {alloc_id:?}, which is {alloc_kind} memory, using {kind} deallocation operation"
             );
         }
         if let Some((size, align)) = old_size_and_align {
diff --git a/compiler/rustc_middle/src/mir/interpret/error.rs b/compiler/rustc_middle/src/mir/interpret/error.rs
index dbdbeb0830a4..f30769248c07 100644
--- a/compiler/rustc_middle/src/mir/interpret/error.rs
+++ b/compiler/rustc_middle/src/mir/interpret/error.rs
@@ -357,7 +357,7 @@ impl fmt::Display for UndefinedBehaviorInfo<'_> {
                 write!(f, "{msg}null pointer is not a valid pointer")
             }
             DanglingIntPointer(i, msg) => {
-                write!(f, "{msg}{:#x} is not a valid pointer", i)
+                write!(f, "{msg}{i:#x} is not a valid pointer")
             }
             AlignmentCheckFailed { required, has } => write!(
                 f,
diff --git a/compiler/rustc_middle/src/mir/interpret/mod.rs b/compiler/rustc_middle/src/mir/interpret/mod.rs
index 8b7548325277..698024b23301 100644
--- a/compiler/rustc_middle/src/mir/interpret/mod.rs
+++ b/compiler/rustc_middle/src/mir/interpret/mod.rs
@@ -466,7 +466,7 @@ impl<'tcx> TyCtxt<'tcx> {
             return alloc_id;
         }
         let id = alloc_map.reserve();
-        debug!("creating alloc {:?} with id {:?}", alloc, id);
+        debug!("creating alloc {alloc:?} with id {id:?}");
         alloc_map.alloc_map.insert(id, alloc.clone());
         alloc_map.dedup.insert(alloc, id);
         id