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-rw-r--r--src/librustc/middle/infer/mod.rs4
1 files changed, 2 insertions, 2 deletions
diff --git a/src/librustc/middle/infer/mod.rs b/src/librustc/middle/infer/mod.rs
index 3f18af3d768..c92168b070e 100644
--- a/src/librustc/middle/infer/mod.rs
+++ b/src/librustc/middle/infer/mod.rs
@@ -1000,9 +1000,9 @@ impl<'a, 'tcx> InferCtxt<'a, 'tcx> {
                     format!(" ({})", ty::type_err_to_str(self.tcx, t_err))
                 });
 
-                self.tcx.sess.span_err(sp, format!("{}{}",
+                self.tcx.sess.span_err(sp, &format!("{}{}",
                     mk_msg(resolved_expected.map(|t| self.ty_to_string(t)), actual_ty),
-                    error_str).index(&FullRange));
+                    error_str)[]);
 
                 for err in err.iter() {
                     ty::note_and_explain_type_err(self.tcx, *err)