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-rw-r--r--src/libstd/io/fs.rs2
-rw-r--r--src/libstd/io/net/pipe.rs2
2 files changed, 2 insertions, 2 deletions
diff --git a/src/libstd/io/fs.rs b/src/libstd/io/fs.rs
index e8fed67fffe..8632fc63e52 100644
--- a/src/libstd/io/fs.rs
+++ b/src/libstd/io/fs.rs
@@ -963,7 +963,7 @@ mod test {
 
     macro_rules! error( ($e:expr, $s:expr) => (
         match $e {
-            Ok(val) => fail!("Should have been an error, was {:?}", val),
+            Ok(val) => fail!("Unexpected success. Should've been: {}", $s),
             Err(ref err) => assert!(err.to_string().as_slice().contains($s.as_slice()),
                                     format!("`{}` did not contain `{}`", err, $s))
         }
diff --git a/src/libstd/io/net/pipe.rs b/src/libstd/io/net/pipe.rs
index 3f8069468f6..e0cf761fdbd 100644
--- a/src/libstd/io/net/pipe.rs
+++ b/src/libstd/io/net/pipe.rs
@@ -340,7 +340,7 @@ mod tests {
                         assert!(e.kind == BrokenPipe ||
                                 e.kind == NotConnected ||
                                 e.kind == ConnectionReset,
-                                "unknown error {:?}", e);
+                                "unknown error {}", e);
                         break;
                     }
                 }