1 files changed, 6 insertions, 2 deletions
diff --git a/src/libsyntax/parse/mod.rs b/src/libsyntax/parse/mod.rs
index 8e139b049c5..31a67ff92f5 100644
--- a/src/libsyntax/parse/mod.rs
+++ b/src/libsyntax/parse/mod.rs
@@ -224,7 +224,9 @@ pub fn file_to_filemap(sess: &ParseSess, path: &Path, spanopt: Option<Span>)
     let bytes = match File::open(path).read_to_end() {
         Ok(bytes) => bytes,
         Err(e) => {
-            err(format!("couldn't read {}: {}", path.display(), e));
+            err(format!("couldn't read {}: {}",
+                        path.display(),
+                        e).as_slice());
             unreachable!()
         }
     };
@@ -233,7 +235,9 @@ pub fn file_to_filemap(sess: &ParseSess, path: &Path, spanopt: Option<Span>)
             return string_to_filemap(sess, s.to_strbuf(),
                                      path.as_str().unwrap().to_strbuf())
         }
-        None => err(format!("{} is not UTF-8 encoded", path.display())),
+        None => {
+            err(format!("{} is not UTF-8 encoded", path.display()).as_slice())
+        }
     }
     unreachable!()
 }