diff --git a/test/mkdir.rs b/test/mkdir.rs
index be0bb743d..f8e543f8b 100644
--- a/test/mkdir.rs
+++ b/test/mkdir.rs
@@ -1,5 +1,6 @@
 use std::io::process::Command;
 use std::io::fs::{rmdir, PathExtensions};
+use std::borrow::ToOwned;
 
 static EXE: &'static str = "./mkdir";
 static TEST_DIR1: &'static str = "mkdir_test1";
@@ -9,8 +10,8 @@ static TEST_DIR4: &'static str = "mkdir_test4/mkdir_test4_1";
 static TEST_DIR5: &'static str = "mkdir_test5/mkdir_test5_1";
 
 fn cleanup(dir: &'static str) {
-    let d = dir.into_string();
-    let p = Path::new(d.into_string());
+    let d = dir.to_owned();
+    let p = Path::new(d.to_owned());
     if p.exists() {
         rmdir(&p).unwrap();
     }
diff --git a/test/mv.rs b/test/mv.rs
index 241780216..b853d327c 100644
--- a/test/mv.rs
+++ b/test/mv.rs
@@ -7,6 +7,7 @@ use std::io::process::Command;
 use std::io::fs::PathExtensions;
 use std::io::pipe::PipeStream;
 use std::str::from_utf8;
+use std::borrow::ToOwned;
 
 static EXE: &'static str = "./mv";
 
@@ -27,8 +28,8 @@ fn run(cmd: &mut Command) -> CmdResult {
     let prog = cmd.spawn().unwrap().wait_with_output().unwrap();
     CmdResult {
         success: prog.status.success(),
-        stderr: from_utf8(prog.error.as_slice()).unwrap().into_string(),
-        stdout: from_utf8(prog.output.as_slice()).unwrap().into_string(),
+        stderr: from_utf8(prog.error.as_slice()).unwrap().to_owned(),
+        stdout: from_utf8(prog.output.as_slice()).unwrap().to_owned(),
     }
 }
 fn run_interactive(cmd: &mut Command, f: |&mut PipeStream|) -> CmdResult {
@@ -40,8 +41,8 @@ fn run_interactive(cmd: &mut Command, f: |&mut PipeStream|) -> CmdResult {
     let prog = command.wait_with_output().unwrap();
     CmdResult {
         success: prog.status.success(),
-        stderr: from_utf8(prog.error.as_slice()).unwrap().into_string(),
-        stdout: from_utf8(prog.output.as_slice()).unwrap().into_string(),
+        stderr: from_utf8(prog.error.as_slice()).unwrap().to_owned(),
+        stdout: from_utf8(prog.output.as_slice()).unwrap().to_owned(),
     }
 }