Fix warnings in libstd and librusti tests

src/librusti/rusti.rs

@@ -546,7 +546,6 @@ pub fn main() {
 #[cfg(test)]
 mod tests {
     use std::io;
-    use std::iterator::IteratorUtil;
     use program::Program;
     use super::*;
 

src/libstd/hashmap.rs

@@ -863,7 +863,7 @@ pub type SetAlgebraIter<'self, T> =
 
 #[cfg(test)]
 mod test_map {
-    use container::{Container, Map, Set};
+    use container::{Container, Map};
     use option::{None, Some};
     use super::*;
     use uint;
@@ -1104,7 +1104,7 @@ mod test_map {
 #[cfg(test)]
 mod test_set {
     use super::*;
-    use container::{Container, Map, Set};
+    use container::Container;
     use vec::ImmutableEqVector;
     use uint;
 

src/libstd/os.rs

@@ -1742,7 +1742,6 @@ mod tests {
     use rand;
     use run;
     use str::StrSlice;
-    use vec;
     use vec::CopyableVector;
     use libc::consts::os::posix88::{S_IRUSR, S_IWUSR, S_IXUSR};
 

src/libstd/ptr.rs

@@ -16,8 +16,9 @@ use option::{Option, Some, None};
 use sys;
 use unstable::intrinsics;
 use util::swap;
-use ops::{Add,Sub};
+
-use num::Int;
+#[cfg(not(test))] use ops::{Add,Sub};
+#[cfg(not(test))] use num::Int;
 
 #[cfg(not(test))] use cmp::{Eq, Ord};
 use uint;
@@ -592,7 +593,7 @@ pub mod ptr_tests {
             }
 
             let mut xs_mut = xs.clone();
-            let mut m_start = to_mut_ptr(xs_mut);
+            let m_start = to_mut_ptr(xs_mut);
             let mut m_ptr = m_start + 9u32;
 
             while m_ptr >= m_start {

src/libstd/rand.rs

@@ -1078,7 +1078,6 @@ mod tests {
         // This is to verify that the implementation of the ISAAC rng is
         // correct (i.e. matches the output of the upstream implementation,
         // which is in the runtime)
-        use vec;
         use libc::size_t;
 
         #[abi = "cdecl"]

src/libstd/to_str.rs

@@ -181,7 +181,7 @@ impl<A:ToStr> ToStr for @[A] {
 mod tests {
     use hashmap::HashMap;
     use hashmap::HashSet;
-    use container::{Set, Map, MutableSet, MutableMap};
+    use container::{MutableSet, MutableMap};
     #[test]
     fn test_simple_types() {
         assert_eq!(1i.to_str(), ~"1");

src/libstd/vec.rs

@@ -16,7 +16,7 @@ use cast::transmute;
 use cast;
 use clone::Clone;
 use container::{Container, Mutable};
-use cmp::{Eq, TotalEq, TotalOrd, Ordering, Less, Equal, Greater};
+use cmp::{Eq, TotalOrd, Ordering, Less, Equal, Greater};
 use cmp;
 use iterator::*;
 use libc::c_void;