rustup

Author: RalfJung

src/lib.rs

@@ -185,7 +185,7 @@ pub fn eval_main<'a, 'tcx: 'a>(
                 let e = e.to_string();
                 let msg = format!("constant evaluation error: {}", e);
                 let mut err = struct_error(ecx.tcx.tcx.at(span), msg.as_str());
-                let (frames, span) = ecx.generate_stacktrace(None);
+                let frames = ecx.generate_stacktrace(None);
                 err.span_label(span, e);
                 for FrameInfo { span, location, .. } in frames {
                     err.span_note(span, &format!("inside call to `{}`", location));