diff --git a/src/tools/miri/src/diagnostics.rs b/src/tools/miri/src/diagnostics.rs
index 92c58d48dc75..cb009fd5cfd1 100644
--- a/src/tools/miri/src/diagnostics.rs
+++ b/src/tools/miri/src/diagnostics.rs
@@ -102,10 +102,7 @@ impl MachineStopType for TerminationInfo {
     }
     fn add_args(
         self: Box<Self>,
-        _: &mut dyn FnMut(
-            std::borrow::Cow<'static, str>,
-            rustc_errors::DiagnosticArgValue,
-        ),
+        _: &mut dyn FnMut(std::borrow::Cow<'static, str>, rustc_errors::DiagnosticArgValue),
     ) {
     }
 }