1 files changed, 2 insertions, 2 deletions
diff --git a/src/libstd/sys/unix/process2.rs b/src/libstd/sys/unix/process2.rs
index 0b4e871454d..caa7b4eb29c 100644
--- a/src/libstd/sys/unix/process2.rs
+++ b/src/libstd/sys/unix/process2.rs
@@ -328,8 +328,8 @@ impl Process {
         }) {
             n if n == self.pid => Some(translate_status(status)),
             0 => None,
-            n => panic!("unknown waitpid error `{:?}`: {:?}", n,
-                       super::last_error()),
+            n => panic!("unknown waitpid error `{}`: {}", n,
+                       io::Error::last_os_error()),
         }
     }
 }