libstd: remove unnecessary `as_slice()` calls

1 files changed, 3 insertions, 3 deletions

diff --git a/src/libstd/io/fs.rs b/src/libstd/io/fs.rs
index e52c00f8247..4c7f768f7d3 100644
--- a/src/libstd/io/fs.rs
+++ b/src/libstd/io/fs.rs
@@ -837,7 +837,7 @@ mod test {
     macro_rules! error( ($e:expr, $s:expr) => (
         match $e {
             Ok(_) => panic!("Unexpected success. Should've been: {}", $s),
-            Err(ref err) => assert!(err.to_string().as_slice().contains($s.as_slice()),
+            Err(ref err) => assert!(err.to_string().contains($s.as_slice()),
                                     format!("`{}` did not contain `{}`", err, $s))
         }
     ) )
@@ -995,7 +995,7 @@ mod test {
         }
         check!(unlink(filename));
         let read_str = str::from_utf8(&read_mem).unwrap();
-        assert!(read_str.as_slice() == final_msg.as_slice());
+        assert!(read_str == final_msg);
     }
 
     #[test]
@@ -1103,7 +1103,7 @@ mod test {
             let f = dir.join(format!("{}.txt", n));
             let mut w = check!(File::create(&f));
             let msg_str = format!("{}{}", prefix, n.to_string());
-            let msg = msg_str.as_slice().as_bytes();
+            let msg = msg_str.as_bytes();
             check!(w.write(msg));
         }
         let files = check!(readdir(dir));