Replace full slice notation with index calls

src/libstd/sys/windows/os.rs

@@ -36,7 +36,7 @@ const BUF_BYTES : uint = 2048u;
 pub fn truncate_utf16_at_nul<'a>(v: &'a [u16]) -> &'a [u16] {
     match v.iter().position(|c| *c == 0) {
         // don't include the 0
-        Some(i) => v[..i],
+        Some(i) => v.index(&(0..i)),
         None => v
     }
 }

src/libstd/sys/windows/pipe.rs

@@ -453,7 +453,7 @@ impl UnixStream {
             }
             let ret = unsafe {
                 libc::WriteFile(self.handle(),
-                                buf[offset..].as_ptr() as libc::LPVOID,
+                                buf.index(&(offset..)).as_ptr() as libc::LPVOID,
                                 (buf.len() - offset) as libc::DWORD,
                                 &mut bytes_written,
                                 &mut overlapped)