test: Update tests to use the new syntax.

src/test/auxiliary/cci_capture_clause.rs

@@ -8,7 +8,7 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-use core::comm::*;
+use std::comm::*;
 
 pub fn foo<T:Owned + Copy>(x: T) -> Port<T> {
     let (p, c) = stream();

src/test/auxiliary/cci_class_cast.rs

@@ -8,7 +8,7 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-use core::to_str::*;
+use std::to_str::*;
 
 pub mod kitty {
     pub struct cat {

src/test/auxiliary/issue-2526.rs

@@ -13,7 +13,7 @@
        uuid = "54cc1bc9-02b8-447c-a227-75ebc923bc29")];
 #[crate_type = "lib"];
 
-extern mod std;
+extern mod extra;
 
 struct arc_destruct<T> {
   _data: int,

src/test/auxiliary/issue-2631-a.rs

@@ -11,9 +11,9 @@
 #[link(name = "req")];
 #[crate_type = "lib"];
 
-extern mod std;
+extern mod extra;
 
-use core::hashmap::HashMap;
+use std::hashmap::HashMap;
 
 pub type header_map = HashMap<~str, @mut ~[@~str]>;
 

src/test/auxiliary/trait_inheritance_overloading_xc.rs

@@ -8,7 +8,7 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-use core::cmp::Eq;
+use std::cmp::Eq;
 
 pub trait MyNum : Add<Self,Self> + Sub<Self,Self> + Mul<Self,Self> + Eq {
 }

src/test/bench/core-map.rs

@@ -8,14 +8,14 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-extern mod std;
+extern mod extra;
 
-use core::io;
-use std::time;
-use std::treemap::TreeMap;
-use core::hashmap::{HashMap, HashSet};
-use core::trie::TrieMap;
-use core::rand::Rng;
+use std::io;
+use extra::time;
+use extra::treemap::TreeMap;
+use std::hashmap::{HashMap, HashSet};
+use std::trie::TrieMap;
+use std::rand::Rng;
 
 fn timed(label: &str, f: &fn()) {
     let start = time::precise_time_s();
@@ -103,7 +103,7 @@ fn main() {
     let mut rand = vec::with_capacity(n_keys);
 
     {
-        let mut rng = core::rand::IsaacRng::new_seeded([1, 1, 1, 1, 1, 1, 1]);
+        let mut rng = std::rand::IsaacRng::new_seeded([1, 1, 1, 1, 1, 1, 1]);
         let mut set = HashSet::new();
         while set.len() != n_keys {
             let next = rng.next() as uint;

src/test/bench/core-set.rs

@@ -8,10 +8,10 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-extern mod std;
-use core::hashmap::HashSet;
-use std::bitv::BitvSet;
-use std::treemap::TreeSet;
+extern mod extra;
+use std::hashmap::HashSet;
+use extra::bitv::BitvSet;
+use extra::treemap::TreeSet;
 
 struct Results {
     sequential_ints: float,
@@ -24,9 +24,9 @@ struct Results {
 }
 
 fn timed(result: &mut float, op: &fn()) {
-    let start = std::time::precise_time_s();
+    let start = extra::time::precise_time_s();
     op();
-    let end = std::time::precise_time_s();
+    let end = extra::time::precise_time_s();
     *result = (end - start);
 }
 
@@ -168,7 +168,7 @@ fn main() {
         let mut results = empty_results();
         results.bench_int(&mut rng, num_keys, max, || HashSet::new::<uint>());
         results.bench_str(&mut rng, num_keys, || HashSet::new::<~str>());
-        write_results("core::hashmap::HashSet", &results);
+        write_results("std::hashmap::HashSet", &results);
     }
 
     {
@@ -176,13 +176,13 @@ fn main() {
         let mut results = empty_results();
         results.bench_int(&mut rng, num_keys, max, || TreeSet::new::<uint>());
         results.bench_str(&mut rng, num_keys, || TreeSet::new::<~str>());
-        write_results("std::treemap::TreeSet", &results);
+        write_results("extra::treemap::TreeSet", &results);
     }
 
     {
         let mut rng = rand::IsaacRng::new_seeded(seed);
         let mut results = empty_results();
         results.bench_int(&mut rng, num_keys, max, || BitvSet::new());
-        write_results("std::bitv::BitvSet", &results);
+        write_results("extra::bitv::BitvSet", &results);
     }
 }

src/test/bench/core-std.rs

@@ -8,13 +8,13 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-// Microbenchmarks for various functions in core and std
+// Microbenchmarks for various functions in std and extra
 
-extern mod std;
+extern mod extra;
 
-use std::time::precise_time_s;
-use core::rand::RngUtil;
-use core::util;
+use extra::time::precise_time_s;
+use std::rand::RngUtil;
+use std::util;
 
 macro_rules! bench (
     ($id:ident) => (maybe_run_test(argv, stringify!($id).to_owned(), $id))

src/test/bench/graph500-bfs.rs

@@ -16,14 +16,14 @@
 
 */
 
-extern mod std;
-use std::arc;
-use std::time;
-use std::deque::Deque;
-use std::par;
-use core::hashmap::HashSet;
-use core::int::abs;
-use core::rand::RngUtil;
+extern mod extra;
+use extra::arc;
+use extra::time;
+use extra::deque::Deque;
+use extra::par;
+use std::hashmap::HashSet;
+use std::int::abs;
+use std::rand::RngUtil;
 
 type node_id = i64;
 type graph = ~[~[node_id]];

src/test/bench/msgsend-pipes-shared.rs

@@ -18,11 +18,11 @@
 // different scalability characteristics compared to the select
 // version.
 
-extern mod std;
-use core::io::Writer;
-use core::io::WriterUtil;
+extern mod extra;
+use std::io::Writer;
+use std::io::WriterUtil;
 
-use core::comm::{Port, Chan, SharedChan};
+use std::comm::{Port, Chan, SharedChan};
 
 macro_rules! move_out (
     { $x:expr } => { unsafe { let y = *ptr::to_unsafe_ptr(&($x)); y } }
@@ -61,7 +61,7 @@ fn run(args: &[~str]) {
     let size = uint::from_str(args[1]).get();
     let workers = uint::from_str(args[2]).get();
     let num_bytes = 100;
-    let start = std::time::precise_time_s();
+    let start = extra::time::precise_time_s();
     let mut worker_results = ~[];
     for uint::range(0, workers) |_i| {
         let to_child = to_child.clone();
@@ -87,7 +87,7 @@ fn run(args: &[~str]) {
     to_child.send(stop);
     move_out!(to_child);
     let result = from_child.recv();
-    let end = std::time::precise_time_s();
+    let end = extra::time::precise_time_s();
     let elapsed = end - start;
     io::stdout().write_str(fmt!("Count is %?\n", result));
     io::stdout().write_str(fmt!("Test took %? seconds\n", elapsed));

src/test/bench/msgsend-pipes.rs

@@ -14,11 +14,11 @@
 //
 // I *think* it's the same, more or less.
 
-extern mod std;
-use core::io::Writer;
-use core::io::WriterUtil;
+extern mod extra;
+use std::io::Writer;
+use std::io::WriterUtil;
 
-use core::comm::{Port, PortSet, Chan, stream};
+use std::comm::{Port, PortSet, Chan, stream};
 
 macro_rules! move_out (
     { $x:expr } => { unsafe { let y = *ptr::to_unsafe_ptr(&($x)); y } }
@@ -57,7 +57,7 @@ fn run(args: &[~str]) {
     let size = uint::from_str(args[1]).get();
     let workers = uint::from_str(args[2]).get();
     let num_bytes = 100;
-    let start = std::time::precise_time_s();
+    let start = extra::time::precise_time_s();
     let mut worker_results = ~[];
     for uint::range(0, workers) |_i| {
         let (from_parent_, to_child) = stream();
@@ -84,7 +84,7 @@ fn run(args: &[~str]) {
     to_child.send(stop);
     move_out!(to_child);
     let result = from_child.recv();
-    let end = std::time::precise_time_s();
+    let end = extra::time::precise_time_s();
     let elapsed = end - start;
     io::stdout().write_str(fmt!("Count is %?\n", result));
     io::stdout().write_str(fmt!("Test took %? seconds\n", elapsed));

src/test/bench/msgsend-ring-mutex-arcs.rs

@@ -15,11 +15,11 @@
 
 // This also serves as a pipes test, because ARCs are implemented with pipes.
 
-extern mod std;
-use std::time;
-use std::arc;
-use std::future;
-use core::cell::Cell;
+extern mod extra;
+use extra::time;
+use extra::arc;
+use extra::future;
+use std::cell::Cell;
 
 // A poor man's pipe.
 type pipe = arc::MutexARC<~[uint]>;

src/test/bench/msgsend-ring-pipes.rs

@@ -16,13 +16,13 @@
 
 // This version uses automatically compiled channel contracts.
 
-extern mod std;
+extern mod extra;
 
-use core::cell::Cell;
-use core::pipes::recv;
-use core::util;
-use std::time;
-use std::future;
+use std::cell::Cell;
+use std::pipes::recv;
+use std::util;
+use extra::time;
+use extra::future;
 
 proto! ring (
     num:send {

src/test/bench/msgsend-ring-rw-arcs.rs

@@ -15,12 +15,12 @@
 
 // This also serves as a pipes test, because ARCs are implemented with pipes.
 
-extern mod std;
+extern mod extra;
 
-use core::cell::Cell;
-use std::time;
-use std::arc;
-use std::future;
+use std::cell::Cell;
+use extra::time;
+use extra::arc;
+use extra::future;
 
 // A poor man's pipe.
 type pipe = arc::RWARC<~[uint]>;

src/test/bench/noise.rs

 // Perlin noise benchmark from https://gist.github.com/1170424
 
-use core::rand::{Rng, RngUtil};
+use std::rand::{Rng, RngUtil};
 
 struct Vec2 {
     x: f32,

src/test/bench/pingpong.rs

@@ -12,11 +12,11 @@
 
 // xfail-pretty
 
-extern mod std;
+extern mod extra;
 
-use core::cell::Cell;
-use core::pipes::*;
-use std::time::precise_time_s;
+use std::cell::Cell;
+use std::pipes::*;
+use extra::time::precise_time_s;
 
 proto! pingpong (
     ping: send {
@@ -117,10 +117,10 @@ pub fn spawn_service_recv<T:Owned,Tb:Owned>(
     client
 }
 
-fn switch<T:Owned,Tb:Owned,U>(endp: core::pipes::RecvPacketBuffered<T, Tb>,
+fn switch<T:Owned,Tb:Owned,U>(endp: std::pipes::RecvPacketBuffered<T, Tb>,
                               f: &fn(v: Option<T>) -> U)
                               -> U {
-    f(core::pipes::try_recv(endp))
+    f(std::pipes::try_recv(endp))
 }
 
 // Here's the benchmark

src/test/bench/shootout-ackermann.rs

@@ -8,7 +8,7 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-extern mod std;
+extern mod extra;
 
 fn ack(m: int, n: int) -> int {
     if m == 0 {

src/test/bench/shootout-binarytrees.rs

@@ -12,8 +12,8 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-extern mod std;
-use std::arena;
+extern mod extra;
+use extra::arena;
 
 enum tree<'self> {
     nil,

src/test/bench/shootout-chameneos-redux.rs

@@ -10,10 +10,10 @@
 
 // chameneos
 
-extern mod std;
-use std::sort;
-use core::cell::Cell;
-use core::comm::*;
+extern mod extra;
+use extra::sort;
+use std::cell::Cell;
+use std::comm::*;
 
 fn print_complements() {
     let all = ~[Blue, Red, Yellow];

src/test/bench/shootout-fannkuch-redux.rs

-use core::from_str::FromStr;
-use core::i32::range;
-use core::vec::MutableVector;
+use std::from_str::FromStr;
+use std::i32::range;
+use std::vec::MutableVector;
 
 fn max(a: i32, b: i32) -> i32 {
     if a > b {

src/test/bench/shootout-fasta-redux.rs

-use core::cast::transmute;
-use core::from_str::FromStr;
-use core::libc::{FILE, STDOUT_FILENO, c_int, fdopen, fputc, fputs, fwrite, size_t};
-use core::uint::{min, range};
-use core::vec::bytes::copy_memory;
+use std::cast::transmute;
+use std::from_str::FromStr;
+use std::libc::{FILE, STDOUT_FILENO, c_int, fdopen, fputc, fputs, fwrite, size_t};
+use std::uint::{min, range};
+use std::vec::bytes::copy_memory;
 
 static LINE_LEN: uint = 60;
 static LOOKUP_SIZE: uint = 4 * 1024;

src/test/bench/shootout-fasta.rs

@@ -15,8 +15,8 @@
  * Computer Language Benchmarks Game
  * http://shootout.alioth.debian.org/
  */
-extern mod std;
-use core::rand::Rng;
+extern mod extra;
+use std::rand::Rng;
 
 fn LINE_LENGTH() -> uint { return 60u; }
 

src/test/bench/shootout-fibo.rs

@@ -8,7 +8,7 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-extern mod std;
+extern mod extra;
 
 fn fib(n: int) -> int {
     if n < 2 {

src/test/bench/shootout-k-nucleotide-pipes.rs

@@ -11,13 +11,13 @@
 // xfail-pretty (extra blank line is inserted in vec::mapi call)
 // multi tasking k-nucleotide
 
-extern mod std;
-use std::sort;
-use core::hashmap::HashMap;
-use core::io::ReaderUtil;
-use core::comm::{stream, Port, Chan};
-use core::cmp::Ord;
-use core::util;
+extern mod extra;
+use extra::sort;
+use std::hashmap::HashMap;
+use std::io::ReaderUtil;
+use std::comm::{stream, Port, Chan};
+use std::cmp::Ord;
+use std::util;
 
 // given a map, print a sorted version of it
 fn sort_and_fmt(mm: &HashMap<~[u8], uint>, total: uint) -> ~str {

src/test/bench/shootout-k-nucleotide.rs

 // xfail-test
 
-extern mod std;
-
-use core::cast::transmute;
-use core::i32::range;
-use core::libc::{STDIN_FILENO, c_int, fdopen, fgets, fileno, fopen, fstat};
-use core::libc::{stat, strlen};
-use core::ptr::null;
-use core::unstable::intrinsics::init;
-use core::vec::{reverse, slice};
-use std::sort::quick_sort3;
+extern mod extra;
+
+use std::cast::transmute;
+use std::i32::range;
+use std::libc::{STDIN_FILENO, c_int, fdopen, fgets, fileno, fopen, fstat};
+use std::libc::{stat, strlen};
+use std::ptr::null;
+use std::unstable::intrinsics::init;
+use std::vec::{reverse, slice};
+use extra::sort::quick_sort3;
 
 static LINE_LEN: uint = 80;
 static TABLE: [u8, ..4] = [ 'A' as u8, 'C' as u8, 'G' as u8, 'T' as u8 ];

src/test/bench/shootout-mandelbrot.rs

-use core::cast::transmute;
-use core::from_str::FromStr;
-use core::i32::range;
-use core::libc::{STDOUT_FILENO, c_int, fdopen, fputc};
+use std::cast::transmute;
+use std::from_str::FromStr;
+use std::i32::range;
+use std::libc::{STDOUT_FILENO, c_int, fdopen, fputc};
 
 static ITER: uint = 50;
 static LIMIT: f64 = 2.0;

src/test/bench/shootout-nbody.rs

-use core::from_str::FromStr;
-use core::uint::range;
+use std::from_str::FromStr;
+use std::uint::range;
 
 static PI: f64 = 3.141592653589793;
 static SOLAR_MASS: f64 = 4.0 * PI * PI;

src/test/bench/shootout-pfib.rs

@@ -19,14 +19,14 @@
 
 */
 
-extern mod std;
+extern mod extra;
 
-use std::{time, getopts};
-use core::int::range;
-use core::comm::*;
-use core::io::WriterUtil;
+use extra::{time, getopts};
+use std::int::range;
+use std::comm::*;
+use std::io::WriterUtil;
 
-use core::result::{Ok, Err};
+use std::result::{Ok, Err};
 
 fn fib(n: int) -> int {
     fn pfib(c: &Chan<int>, n: int) {

src/test/bench/shootout-pidigits.rs

 // xfail-test
 
-use core::cast::transmute;
-use core::from_str::FromStr;
-use core::libc::{STDOUT_FILENO, c_char, c_int, c_uint, c_void, fdopen, fputc};
-use core::libc::{fputs};
-use core::ptr::null;
+use std::cast::transmute;
+use std::from_str::FromStr;
+use std::libc::{STDOUT_FILENO, c_char, c_int, c_uint, c_void, fdopen, fputc};
+use std::libc::{fputs};
+use std::ptr::null;
 
 struct mpz_t {
     _mp_alloc: c_int,

src/test/bench/shootout-reverse-complement.rs

 // xfail-pretty
 // xfail-test
 
-use core::cast::transmute;
-use core::libc::{STDOUT_FILENO, c_int, fdopen, fgets, fopen, fputc, fwrite};
-use core::libc::{size_t};
-use core::ptr::null;
-use core::vec::{capacity, reserve, reserve_at_least};
-use core::vec::raw::set_len;
+use std::cast::transmute;
+use std::libc::{STDOUT_FILENO, c_int, fdopen, fgets, fopen, fputc, fwrite};
+use std::libc::{size_t};
+use std::ptr::null;
+use std::vec::{capacity, reserve, reserve_at_least};
+use std::vec::raw::set_len;
 
 static LINE_LEN: u32 = 80;
 

src/test/bench/shootout-spectralnorm.rs

-use core::from_str::FromStr;
-use core::iter::ExtendedMutableIter;
+use std::from_str::FromStr;
+use std::iter::ExtendedMutableIter;
 
 #[inline]
 fn A(i: i32, j: i32) -> i32 {

src/test/bench/std-smallintmap.rs

@@ -10,9 +10,9 @@
 
 // Microbenchmark for the smallintmap library
 
-extern mod std;
-use std::smallintmap::SmallIntMap;
-use core::io::WriterUtil;
+extern mod extra;
+use extra::smallintmap::SmallIntMap;
+use std::io::WriterUtil;
 
 fn append_sequential(min: uint, max: uint, map: &mut SmallIntMap<uint>) {
     for uint::range(min, max) |i| {
@@ -43,11 +43,11 @@ fn main() {
 
     for uint::range(0u, rep) |_r| {
         let mut map = SmallIntMap::new();
-        let start = std::time::precise_time_s();
+        let start = extra::time::precise_time_s();
         append_sequential(0u, max, &mut map);
-        let mid = std::time::precise_time_s();
+        let mid = extra::time::precise_time_s();
         check_sequential(0u, max, &map);
-        let end = std::time::precise_time_s();
+        let end = extra::time::precise_time_s();
 
         checkf += (end - mid) as float;
         appendf += (mid - start) as float;

src/test/bench/sudoku.rs

@@ -10,11 +10,11 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-extern mod std;
+extern mod extra;
 
-use core::io::{ReaderUtil, WriterUtil};
-use core::io;
-use core::unstable::intrinsics::cttz16;
+use std::io::{ReaderUtil, WriterUtil};
+use std::io;
+use std::unstable::intrinsics::cttz16;
 
 // Computes a single solution to a given 9x9 sudoku
 //

src/test/bench/task-perf-alloc-unwind.rs

@@ -10,10 +10,10 @@
 
 // xfail-win32
 
-extern mod std;
+extern mod extra;
 
-use std::list::{List, Cons, Nil};
-use std::time::precise_time_s;
+use extra::list::{List, Cons, Nil};
+use extra::time::precise_time_s;
 
 enum UniqueList {
     ULNil, ULCons(~UniqueList)

src/test/bench/task-perf-jargon-metal-smoke.rs

@@ -17,7 +17,7 @@
 //
 // The filename is a song reference; google it in quotes.
 
-use core::cell::Cell;
+use std::cell::Cell;
 
 fn child_generation(gens_left: uint, c: comm::Chan<()>) {
     // This used to be O(n^2) in the number of generations that ever existed.

src/test/bench/task-perf-linked-failure.rs

@@ -22,7 +22,7 @@
 // Creates in the background 'num_tasks' tasks, all blocked forever.
 // Doesn't return until all such tasks are ready, but doesn't block forever itself.
 
-use core::comm::*;
+use std::comm::*;
 
 fn grandchild_group(num_tasks: uint) {
     let (po, ch) = stream();

src/test/bench/task-perf-one-million.rs

@@ -10,7 +10,7 @@
 
 // Test for concurrent tasks
 
-use core::comm::*;
+use std::comm::*;
 
 fn calc(children: uint, parent_wait_chan: &Chan<Chan<Chan<int>>>) {
 

src/test/compile-fail/arc-cant-nest-rw-arc-3177.rs

@@ -10,8 +10,8 @@
 
 // xfail-test
 // error-pattern: instantiating a type parameter with an incompatible type
-extern mod std;
-use std::arc::rw_arc;
+extern mod extra;
+use extra::arc::rw_arc;
 
 fn main() {
     let arc1  = ~rw_arc(true);

src/test/compile-fail/arc-rw-cond-shouldnt-escape.rs

@@ -9,8 +9,8 @@
 // except according to those terms.
 
 // error-pattern: reference is not valid outside of its lifetime
-extern mod std;
-use std::arc;
+extern mod extra;
+use extra::arc;
 fn main() {
     let x = ~arc::RWARC(1);
     let mut y = None;

src/test/compile-fail/arc-rw-read-mode-shouldnt-escape.rs

@@ -8,8 +8,8 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-extern mod std;
-use std::arc;
+extern mod extra;
+use extra::arc;
 fn main() {
     let x = ~arc::RWARC(1);
     let mut y = None;

src/test/compile-fail/arc-rw-state-shouldnt-escape.rs

@@ -9,8 +9,8 @@
 // except according to those terms.
 
 // error-pattern: reference is not valid outside of its lifetime
-extern mod std;
-use std::arc;
+extern mod extra;
+use extra::arc;
 fn main() {
     let x = ~arc::RWARC(1);
     let mut y = None;

src/test/compile-fail/arc-rw-write-mode-cond-shouldnt-escape.rs

@@ -9,8 +9,8 @@
 // except according to those terms.
 
 // error-pattern: reference is not valid outside of its lifetime
-extern mod std;
-use std::arc;
+extern mod extra;
+use extra::arc;
 fn main() {
     let x = ~arc::RWARC(1);
     let mut y = None;

src/test/compile-fail/arc-rw-write-mode-shouldnt-escape.rs

@@ -9,8 +9,8 @@
 // except according to those terms.
 
 // error-pattern: reference is not valid outside of its lifetime
-extern mod std;
-use std::arc;
+extern mod extra;
+use extra::arc;
 fn main() {
     let x = ~arc::RWARC(1);
     let mut y = None;

src/test/compile-fail/borrowck-borrowed-uniq-rvalue.rs

@@ -10,7 +10,7 @@
 
 //buggy.rs
 
-use core::hashmap::HashMap;
+use std::hashmap::HashMap;
 
 fn main() {
     let mut buggy_map :HashMap<uint, &uint> =

src/test/compile-fail/borrowck-insert-during-each.rs

@@ -8,7 +8,7 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-use core::hashmap::HashSet;
+use std::hashmap::HashSet;
 
 struct Foo {
   n: HashSet<int>,

src/test/compile-fail/borrowck-loan-local-as-both-mut-and-imm.rs

@@ -8,7 +8,7 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-use core::either::{Either, Left, Right};
+use std::either::{Either, Left, Right};
 
     fn f(x: &mut Either<int,float>, y: &Either<int,float>) -> int {
         match *y {

src/test/compile-fail/borrowck-move-by-capture.rs

-extern mod std;
+extern mod extra;
 
 fn main() {
     let foo = ~3;

src/test/compile-fail/borrowck-vec-pattern-move-tail.rs

@@ -2,7 +2,7 @@ fn main() {
     let mut a = [1, 2, 3, 4];
     let t = match a {
         [1, 2, ..tail] => tail,
-        _ => core::util::unreachable()
+        _ => std::util::unreachable()
     };
     a[0] = 0; //~ ERROR cannot assign to `a[]` because it is borrowed
     t[0];

src/test/compile-fail/core-tls-store-pointer.rs

@@ -10,7 +10,7 @@
 
 // Testing that we can't store a borrowed pointer it task-local storage
 
-use core::local_data::*;
+use std::local_data::*;
 
 fn key(_x: @&int) { }
 

src/test/compile-fail/extfmt-not-enough-args.rs

@@ -10,6 +10,6 @@
 
 // error-pattern:not enough arguments
 
-extern mod std;
+extern mod extra;
 
 fn main() { let s = fmt!("%s%s%s", "test", "test"); }

src/test/compile-fail/extfmt-too-many-args.rs

@@ -10,6 +10,6 @@
 
 // error-pattern:too many arguments
 
-extern mod std;
+extern mod extra;
 
 fn main() { let s = fmt!("%s", "test", "test"); }

src/test/compile-fail/fail-expr.rs

@@ -8,6 +8,6 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-// error-pattern:failed to find an implementation of trait core::sys::FailWithCause for int
+// error-pattern:failed to find an implementation of trait std::sys::FailWithCause for int
 
 fn main() { fail!(5); }

src/test/compile-fail/fail-type-err.rs

@@ -8,5 +8,5 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-// error-pattern:failed to find an implementation of trait core::sys::FailWithCause for ~[int]
+// error-pattern:failed to find an implementation of trait std::sys::FailWithCause for ~[int]
 fn main() { fail!(~[0i]); }

src/test/compile-fail/forget-init-unsafe.rs

@@ -8,7 +8,7 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-use core::unstable::intrinsics::{init, forget};
+use std::unstable::intrinsics::{init, forget};
 
 // Test that the `forget` and `init` intrinsics are really unsafe
 pub fn main() {

src/test/compile-fail/fully-qualified-type-name1.rs

@@ -13,5 +13,5 @@
 fn main() {
     let x: Option<uint>;
     x = 5;
-    //~^ ERROR mismatched types: expected `core::option::Option<uint>`
+    //~^ ERROR mismatched types: expected `std::option::Option<uint>`
 }

src/test/compile-fail/fully-qualified-type-name4.rs

@@ -10,11 +10,11 @@
 
 // Test that we use fully-qualified type names in error messages.
 
-use core::task::Task;
+use std::task::Task;
 
 fn bar(x: uint) -> Task {
     return x;
-    //~^ ERROR mismatched types: expected `core::task::Task`
+    //~^ ERROR mismatched types: expected `std::task::Task`
 }
 
 fn main() {

src/test/compile-fail/issue-2766-a.rs

@@ -11,8 +11,8 @@
 pub mod stream {
     pub enum Stream<T:Owned> { send(T, ::stream::server::Stream<T>), }
     pub mod server {
-        use core::option;
-        use core::pipes;
+        use std::option;
+        use std::pipes;
 
         pub impl<T:Owned> Stream<T> {
             pub fn recv() -> extern fn(v: Stream<T>) -> ::stream::Stream<T> {

src/test/compile-fail/issue-3021-b.rs

@@ -8,7 +8,7 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-extern mod std;
+extern mod extra;
 
 fn siphash(k0 : u64) {
 

src/test/compile-fail/issue-3021-c.rs

@@ -8,7 +8,7 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-extern mod std;
+extern mod extra;
 
 fn siphash<T>() {
 

src/test/compile-fail/issue-3021-d.rs

@@ -8,7 +8,7 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-extern mod std;
+extern mod extra;
 
 trait siphash {
     fn result(&self) -> u64;

src/test/compile-fail/issue-3021.rs

@@ -8,7 +8,7 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-extern mod std;
+extern mod extra;
 
 trait SipHash {
     fn reset(&self);

src/test/compile-fail/issue-3296.rs

@@ -8,9 +8,9 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-use std;
+use extra;
 
-struct Deserializer : std::serialization::deserializer{ //~ ERROR obsolete syntax: class traits
+struct Deserializer : extra::serialization::deserializer{ //~ ERROR obsolete syntax: class traits
     x: ()
 }
 
@@ -18,7 +18,7 @@ struct Foo {
     a: ()
 }
 
-fn deserialize_foo<__D: std::serialization::deserializer>(__d: __D) {
+fn deserialize_foo<__D: extra::serialization::deserializer>(__d: __D) {
 }
 
 fn main() { let des = Deserializer(); let foo = deserialize_foo(des); }

src/test/compile-fail/issue-3680.rs

@@ -10,6 +10,6 @@
 
 fn main() {
     match None {
-        Err(_) => () //~ ERROR mismatched types: expected `core::option::Option<<V1>>` but found `core::result::Result<<V2>,<V3>>`
+        Err(_) => () //~ ERROR mismatched types: expected `std::option::Option<<V1>>` but found `std::result::Result<<V2>,<V3>>`
     }
 }

src/test/compile-fail/issue-3953.rs

@@ -8,7 +8,7 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-use core::cmp::Eq;
+use std::cmp::Eq;
 
 trait Hahaha: Eq + Eq + Eq + Eq + Eq + //~ ERROR Duplicate supertrait
               Eq + Eq + Eq + Eq + Eq + Eq + Eq + Eq + Eq + Eq + Eq + Eq + Eq +

src/test/compile-fail/issue-511.rs

@@ -8,8 +8,8 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-extern mod std;
-use core::cmp::Eq;
+extern mod extra;
+use std::cmp::Eq;
 
 fn f<T:Eq>(o: &mut Option<T>) {
     assert!(*o == option::None);

src/test/compile-fail/issue-5358-1.rs

@@ -12,7 +12,7 @@
 
 fn main() {
     match S(Left(5)) {
-        Right(_) => {}  //~ ERROR mismatched types: expected `S` but found `core::either::Either
+        Right(_) => {}  //~ ERROR mismatched types: expected `S` but found `std::either::Either
         _ => {}
     }
 }

src/test/compile-fail/issue-5358.rs

@@ -12,6 +12,6 @@
 
 fn main() {
     match *S(Left(5)) {
-      S(_) => {}  //~ ERROR mismatched types: expected `core::either::Either<uint,uint>` but found a structure pattern
+      S(_) => {}  //~ ERROR mismatched types: expected `std::either::Either<uint,uint>` but found a structure pattern
     }
 }

src/test/compile-fail/lint-unused-imports.rs

@@ -12,23 +12,23 @@
 
 use cal = bar::c::cc;
 
-use core::either::Right;        //~ ERROR unused import
+use std::either::Right;        //~ ERROR unused import
 
-use core::util::*;              // shouldn't get errors for not using
+use std::util::*;              // shouldn't get errors for not using
                                 // everything imported
 
 // Should get errors for both 'Some' and 'None'
-use core::option::{Some, None}; //~ ERROR unused import
+use std::option::{Some, None}; //~ ERROR unused import
                                 //~^ ERROR unused import
 
-use core::io::ReaderUtil;       //~ ERROR unused import
+use std::io::ReaderUtil;       //~ ERROR unused import
 // Be sure that if we just bring some methods into scope that they're also
 // counted as being used.
-use core::io::WriterUtil;
+use std::io::WriterUtil;
 
 // Make sure this import is warned about when at least one of its imported names
 // is unused
-use core::vec::{filter, map};   //~ ERROR unused import
+use std::vec::{filter, map};   //~ ERROR unused import
 
 mod foo {
     pub struct Point{x: int, y: int}
@@ -37,7 +37,7 @@ pub struct Square{p: Point, h: uint, w: uint}
 
 mod bar {
     // Don't ignore on 'pub use' because we're not sure if it's used or not
-    pub use core::cmp::Eq;
+    pub use std::cmp::Eq;
 
     pub mod c {
         use foo::Point;
@@ -47,7 +47,7 @@ pub mod c {
 
     #[allow(unused_imports)]
     mod foo {
-        use core::cmp::Eq;
+        use std::cmp::Eq;
     }
 }
 

src/test/compile-fail/map-types.rs

@@ -8,8 +8,8 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-use core::container::Map;
-use core::hashmap::HashMap;
+use std::container::Map;
+use std::hashmap::HashMap;
 
 // Test that trait types printed in error msgs include the type arguments.
 
@@ -17,5 +17,5 @@ fn main() {
     let x: @Map<~str, ~str> = @HashMap::new::<~str, ~str>() as
         @Map<~str, ~str>;
     let y: @Map<uint, ~str> = @x;
-    //~^ ERROR mismatched types: expected `@core::container::Map<uint,~str>`
+    //~^ ERROR mismatched types: expected `@std::container::Map<uint,~str>`
 }

src/test/compile-fail/moves-based-on-type-cyclic-types-issue-4821.rs

@@ -12,7 +12,7 @@
 // temporary kinds wound up being stored in a cache and used later.
 // See middle::ty::type_contents() for more information.
 
-extern mod std;
+extern mod extra;
 
 struct List { key: int, next: Option<~List> }
 

src/test/compile-fail/mutable-huh-ptr-assign.rs

@@ -8,7 +8,7 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-extern mod std;
+extern mod extra;
 
 fn main() {
     unsafe fn f(v: *const int) {

src/test/compile-fail/name-clash-nullary.rs

@@ -9,7 +9,7 @@
 // except according to those terms.
 
 // error-pattern:declaration of `None` shadows
-use core::option::*;
+use std::option::*;
 
 fn main() {
   let None: int = 42;

src/test/compile-fail/no-capture-arc.rs

@@ -10,8 +10,8 @@
 
 // error-pattern: use of moved value
 
-extern mod std;
-use std::arc;
+extern mod extra;
+use extra::arc;
 
 fn main() {
     let v = ~[1, 2, 3, 4, 5, 6, 7, 8, 9, 10];

src/test/compile-fail/no-reuse-move-arc.rs

@@ -8,8 +8,8 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-extern mod std;
-use std::arc;
+extern mod extra;
+use extra::arc;
 
 fn main() {
     let v = ~[1, 2, 3, 4, 5, 6, 7, 8, 9, 10];

src/test/compile-fail/no-send-res-ports.rs

@@ -8,7 +8,7 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-use core::cell::Cell;
+use std::cell::Cell;
 
 struct Port<T>(@T);
 

src/test/compile-fail/noexporttypeexe.rs

@@ -18,5 +18,5 @@ fn main() {
     // because the def_id associated with the type was
     // not convertible to a path.
   let x: int = noexporttypelib::foo();
-    //~^ ERROR expected `int` but found `core::option::Option<int>`
+    //~^ ERROR expected `int` but found `std::option::Option<int>`
 }

src/test/compile-fail/pattern-tyvar-2.rs

@@ -10,7 +10,7 @@
 // except according to those terms.
 
 
-extern mod std;
+extern mod extra;
 
 enum bar { t1((), Option<~[int]>), t2, }
 

src/test/compile-fail/pattern-tyvar.rs

@@ -9,7 +9,7 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-extern mod std;
+extern mod extra;
 
 // error-pattern: mismatched types
 

src/test/compile-fail/qquote-1.rs

@@ -10,7 +10,7 @@
 
 // xfail-test Can't use syntax crate here
 
-extern mod std;
+extern mod extra;
 extern mod syntax;
 
 use io::*;

src/test/compile-fail/qquote-2.rs

@@ -10,10 +10,10 @@
 
 // xfail-test Can't use syntax crate here
 
-extern mod std;
+extern mod extra;
 extern mod syntax;
 
-use std::io::*;
+use extra::io::*;
 
 use syntax::diagnostic;
 use syntax::ast;

src/test/compile-fail/regions-glb-free-free.rs

@@ -9,7 +9,7 @@
 // except according to those terms.
 
 mod argparse {
-    extern mod std;
+    extern mod extra;
 
     pub struct Flag<'self> {
         name: &'self str,

src/test/compile-fail/seq-args.rs

@@ -8,7 +8,7 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-extern mod std;
+extern mod extra;
 fn main() {
 trait seq { }
 

src/test/compile-fail/spawn-non-nil-fn.rs

@@ -10,6 +10,6 @@
 
 // error-pattern: mismatched types
 
-extern mod std;
+extern mod extra;
 
 fn main() { task::spawn(|| -> int { 10 }); }

src/test/compile-fail/sync-cond-shouldnt-escape.rs

@@ -9,8 +9,8 @@
 // except according to those terms.
 
 // error-pattern: reference is not valid outside of its lifetime
-extern mod std;
-use std::sync;
+extern mod extra;
+use extra::sync;
 
 fn main() {
     let m = ~sync::Mutex();

src/test/compile-fail/sync-rwlock-cond-shouldnt-escape.rs

@@ -9,8 +9,8 @@
 // except according to those terms.
 
 // error-pattern: reference is not valid outside of its lifetime
-extern mod std;
-use std::sync;
+extern mod extra;
+use extra::sync;
 fn main() {
     let x = ~sync::RWlock();
     let mut y = None;

src/test/compile-fail/sync-rwlock-read-mode-shouldnt-escape.rs

@@ -9,8 +9,8 @@
 // except according to those terms.
 
 // error-pattern: cannot infer an appropriate lifetime
-extern mod std;
-use std::sync;
+extern mod extra;
+use extra::sync;
 fn main() {
     let x = ~sync::RWlock();
     let mut y = None;

src/test/compile-fail/sync-rwlock-write-mode-cond-shouldnt-escape.rs

@@ -9,8 +9,8 @@
 // except according to those terms.
 
 // error-pattern: reference is not valid outside of its lifetime
-extern mod std;
-use std::sync;
+extern mod extra;
+use extra::sync;
 fn main() {
     let x = ~sync::RWlock();
     let mut y = None;

src/test/compile-fail/sync-rwlock-write-mode-shouldnt-escape.rs

@@ -9,8 +9,8 @@
 // except according to those terms.
 
 // error-pattern: reference is not valid outside of its lifetime
-extern mod std;
-use std::sync;
+extern mod extra;
+use extra::sync;
 fn main() {
     let x = ~sync::RWlock();
     let mut y = None;

src/test/compile-fail/tag-that-dare-not-speak-its-name.rs

@@ -13,9 +13,9 @@
 
 #[no_std];
 
-extern mod core;
+extern mod std;
 
-fn last<T>(v: ~[&T]) -> core::option::Option<T> {
+fn last<T>(v: ~[&T]) -> std::option::Option<T> {
     fail!();
 }
 

src/test/compile-fail/use-meta-dup.rs

@@ -10,6 +10,6 @@
 
 // error-pattern:duplicate meta item `name`
 
-extern mod std(name = "std", name = "nonstd");
+extern mod extra(name = "extra", name = "nonstd");
 
 fn main() { }

src/test/compile-fail/use-meta-mismatch.rs

@@ -8,8 +8,8 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-// error-pattern:can't find crate for `std`
+// error-pattern:can't find crate for `extra`
 
-extern mod std(complex(meta(item)));
+extern mod extra(complex(meta(item)));
 
 fn main() { }

src/test/compile-fail/view-items-at-top.rs

@@ -10,12 +10,12 @@
 
 // xfail-test
 
-extern mod std;
+extern mod extra;
 
 fn f() {
 }
 
-use std::net;    //~ ERROR view items must be declared at the top
+use extra::net;    //~ ERROR view items must be declared at the top
 
 fn main() {
 }

src/test/run-fail/extern-fail.rs

@@ -12,7 +12,7 @@
 // Testing that runtime failure doesn't cause callbacks to abort abnormally.
 // Instead the failure will be delivered after the callbacks return.
 
-use core::old_iter;
+use std::old_iter;
 
 mod rustrt {
     pub extern {

src/test/run-fail/fail-main.rs

@@ -9,5 +9,5 @@
 // except according to those terms.
 
 // error-pattern:moop
-extern mod std;
+extern mod extra;
 fn main() { fail!("moop"); }

src/test/run-fail/fmt-fail.rs

@@ -9,6 +9,6 @@
 // except according to those terms.
 
 // error-pattern:meh
-extern mod std;
+extern mod extra;
 
 fn main() { let str_var: ~str = ~"meh"; fail!(fmt!("%s", str_var)); }

src/test/run-fail/for-each-loop-fail.rs

@@ -9,5 +9,5 @@
 // except according to those terms.
 
 // error-pattern:moop
-extern mod std;
+extern mod extra;
 fn main() { for uint::range(0u, 10u) |_i| { fail!("moop"); } }

src/test/run-fail/issue-2156.rs

@@ -10,8 +10,8 @@
 
 // error-pattern:explicit failure
 // Don't double free the string
-extern mod std;
-use core::io::ReaderUtil;
+extern mod extra;
+use std::io::ReaderUtil;
 
 fn main() {
     do io::with_str_reader(~"") |rdr| {

src/test/run-fail/issue-2444.rs

@@ -10,8 +10,8 @@
 
 // error-pattern:explicit failure
 
-extern mod std;
-use std::arc;
+extern mod extra;
+use extra::arc;
 
 enum e<T> { e(arc::ARC<T>) }
 

src/test/run-fail/linked-failure.rs

@@ -11,7 +11,7 @@
 
 
 // error-pattern:1 == 2
-extern mod std;
+extern mod extra;
 
 fn child() { assert!((1 == 2)); }
 

src/test/run-fail/morestack2.rs

@@ -15,7 +15,7 @@
 // See the hack in upcall_call_shim_on_c_stack where it messes
 // with the stack limit.
 
-extern mod std;
+extern mod extra;
 
 mod rustrt {
     pub extern {