Someone probably already got to this, but if not, this should fix incoming from last night.

src/librustc/middle/astencode.rs

@@ -1203,8 +1203,8 @@ impl fake_ext_ctxt for fake_session {
 }
 
 #[cfg(test)]
-fn mk_ctxt() -> fake_ext_ctxt {
-    @parse::new_parse_sess(None) as fake_ext_ctxt
+fn mk_ctxt() -> @fake_ext_ctxt {
+    @parse::new_parse_sess(None) as @fake_ext_ctxt
 }
 
 #[cfg(test)]

src/test/bench/core-std.rs

@@ -17,6 +17,7 @@ use std::oldmap;
 use std::oldmap::{Map, HashMap};
 
 use core::io::{Reader, ReaderUtil};
+use core::rand::RngUtil;
 
 macro_rules! bench (
     ($id:ident) => (maybe_run_test(argv, stringify!($id).to_owned(), $id))

src/test/bench/graph500-bfs.rs

@@ -29,6 +29,7 @@ use std::deque::Deque;
 use std::par;
 use core::io::WriterUtil;
 use core::int::abs;
+use core::rand::RngUtil;
 
 type node_id = i64;
 type graph = ~[~[node_id]];
@@ -37,7 +38,7 @@ type bfs_result = ~[node_id];
 fn make_edges(scale: uint, edgefactor: uint) -> ~[(node_id, node_id)] {
     let r = rand::xorshift();
 
-    fn choose_edge(i: node_id, j: node_id, scale: uint, r: rand::Rng)
+    fn choose_edge(i: node_id, j: node_id, scale: uint, r: @rand::Rng)
         -> (node_id, node_id) {
 
         let A = 0.57;

src/test/bench/noise.rs

@@ -1,5 +1,7 @@
 // Perlin noise benchmark from https://gist.github.com/1170424
 
+use core::rand::RngUtil;
+
 struct Vec2 {
     x: f32,
     y: f32,
@@ -8,7 +10,7 @@ struct Vec2 {
 fn lerp(a: f32, b: f32, v: f32) -> f32  { a * (1.0 - v) + b * v }
 fn smooth(v: f32) -> f32                { v * v * (3.0 - 2.0 * v) }
 
-fn random_gradient(r: rand::Rng) -> Vec2 {
+fn random_gradient(r: @rand::Rng) -> Vec2 {
     let v = r.gen_float() * float::consts::pi * 2.0;
     Vec2{
         x: float::cos(v) as f32,

src/test/bench/shootout-fasta.rs

@@ -57,7 +57,7 @@ fn select_random(r: u32, genelist: ~[AminoAcids]) -> char {
     return bisect(copy genelist, 0, vec::len::<AminoAcids>(genelist) - 1, r);
 }
 
-fn make_random_fasta(wr: io::Writer, id: ~str, desc: ~str, genelist: ~[AminoAcids], n: int) {
+fn make_random_fasta(wr: @io::Writer, id: ~str, desc: ~str, genelist: ~[AminoAcids], n: int) {
     wr.write_line(~">" + id + ~" " + desc);
     let rng = @mut MyRandom {last: rand::Rng().next()};
     let mut op: ~str = ~"";
@@ -72,7 +72,7 @@ fn make_random_fasta(wr: io::Writer, id: ~str, desc: ~str, genelist: ~[AminoAcid
     if str::len(op) > 0u { wr.write_line(op); }
 }
 
-fn make_repeat_fasta(wr: io::Writer, id: ~str, desc: ~str, s: ~str, n: int) {
+fn make_repeat_fasta(wr: @io::Writer, id: ~str, desc: ~str, s: ~str, n: int) {
     unsafe {
         wr.write_line(~">" + id + ~" " + desc);
         let mut op: ~str = ~"";

src/test/bench/shootout-mandelbrot.rs

@@ -110,7 +110,7 @@ impl io::Writer for Devnull {
 
 fn writer(path: ~str, pport: comm::Port<Line>, size: uint)
 {
-    let cout: io::Writer = match path {
+    let cout: @io::Writer = match path {
         ~"" => {
             @Devnull as @io::Writer
         }

src/test/bench/sudoku.rs

@@ -39,7 +39,7 @@ type grid = ~[~[u8]];
 pub enum grid_t { grid_ctor(grid), }
 
 // read a sudoku problem from file f
-pub fn read_grid(f: io::Reader) -> grid_t {
+pub fn read_grid(f: @io::Reader) -> grid_t {
     fail_unless!(f.read_line() == ~"9,9"); /* assert first line is exactly "9,9" */
 
     let mut g = vec::from_fn(10u, {|_i|
@@ -127,7 +127,7 @@ pub fn solve_grid(g: grid_t) {
     }
 }
 
-pub fn write_grid(f: io::Writer, g: grid_t) {
+pub fn write_grid(f: @io::Writer, g: grid_t) {
     for u8::range(0u8, 9u8) |row| {
         f.write_str(fmt!("%u", (*g)[row][0] as uint));
         for u8::range(1u8, 9u8) |col| {