Merge remote-tracking branch 'rust-lang/master'

Conflicts:
	src/libcore/cell.rs
	src/librustc_driver/test.rs
	src/libstd/old_io/net/tcp.rs
	src/libstd/old_io/process.rs

23 files changed, 140 insertions, 140 deletions

diff --git a/src/libstd/sys/common/backtrace.rs b/src/libstd/sys/common/backtrace.rs
index d069d9ee3b8..9b53ebf70a0 100644
--- a/src/libstd/sys/common/backtrace.rs
+++ b/src/libstd/sys/common/backtrace.rs
@@ -10,7 +10,7 @@
 
 use prelude::v1::*;
 
-use io::IoResult;
+use old_io::IoResult;
 
 #[cfg(target_pointer_width = "64")]
 pub const HEX_WIDTH: uint = 18;
diff --git a/src/libstd/sys/common/mod.rs b/src/libstd/sys/common/mod.rs
index 272cf9bd0c0..ae01586c703 100644
--- a/src/libstd/sys/common/mod.rs
+++ b/src/libstd/sys/common/mod.rs
@@ -11,7 +11,7 @@
 #![allow(missing_docs)]
 #![allow(dead_code)]
 
-use io::{self, IoError, IoResult};
+use old_io::{self, IoError, IoResult};
 use prelude::v1::*;
 use sys::{last_error, retry};
 use ffi::CString;
@@ -35,7 +35,7 @@ pub mod wtf8;
 
 pub fn eof() -> IoError {
     IoError {
-        kind: io::EndOfFile,
+        kind: old_io::EndOfFile,
         desc: "end of file",
         detail: None,
     }
@@ -43,7 +43,7 @@ pub fn eof() -> IoError {
 
 pub fn timeout(desc: &'static str) -> IoError {
     IoError {
-        kind: io::TimedOut,
+        kind: old_io::TimedOut,
         desc: desc,
         detail: None,
     }
@@ -51,7 +51,7 @@ pub fn timeout(desc: &'static str) -> IoError {
 
 pub fn short_write(n: uint, desc: &'static str) -> IoError {
     IoError {
-        kind: if n == 0 { io::TimedOut } else { io::ShortWrite(n) },
+        kind: if n == 0 { old_io::TimedOut } else { old_io::ShortWrite(n) },
         desc: desc,
         detail: None,
     }
@@ -59,7 +59,7 @@ pub fn short_write(n: uint, desc: &'static str) -> IoError {
 
 pub fn unimpl() -> IoError {
     IoError {
-        kind: io::IoUnavailable,
+        kind: old_io::IoUnavailable,
         desc: "operations not yet supported",
         detail: None,
     }
diff --git a/src/libstd/sys/common/net.rs b/src/libstd/sys/common/net.rs
index 4cf891ac498..e42db42dc60 100644
--- a/src/libstd/sys/common/net.rs
+++ b/src/libstd/sys/common/net.rs
@@ -14,9 +14,9 @@ use self::InAddr::*;
 
 use ffi::CString;
 use ffi;
-use io::net::addrinfo;
-use io::net::ip::{SocketAddr, IpAddr, Ipv4Addr, Ipv6Addr};
-use io::{IoResult, IoError};
+use old_io::net::addrinfo;
+use old_io::net::ip::{SocketAddr, IpAddr, Ipv4Addr, Ipv6Addr};
+use old_io::{IoResult, IoError};
 use libc::{self, c_char, c_int};
 use mem;
 use num::Int;
@@ -28,7 +28,7 @@ use sys::{self, retry, c, sock_t, last_error, last_net_error, last_gai_error, cl
 use sync::{Arc, Mutex, MutexGuard};
 use sys_common::{self, keep_going, short_write, timeout};
 use cmp;
-use io;
+use old_io;
 
 // FIXME: move uses of Arc and deadline tracking to std::io
 
@@ -208,7 +208,7 @@ pub fn sockaddr_to_addr(storage: &libc::sockaddr_storage,
         }
         _ => {
             Err(IoError {
-                kind: io::InvalidInput,
+                kind: old_io::InvalidInput,
                 desc: "invalid argument",
                 detail: None,
             })
@@ -458,7 +458,7 @@ pub fn write<T, L, W>(fd: sock_t,
             // As with read(), first wait for the socket to be ready for
             // the I/O operation.
             match await(&[fd], deadline, Writable) {
-                Err(ref e) if e.kind == io::EndOfFile && written > 0 => {
+                Err(ref e) if e.kind == old_io::EndOfFile && written > 0 => {
                     assert!(deadline.is_some());
                     return Err(short_write(written, "short write"))
                 }
diff --git a/src/libstd/sys/unix/backtrace.rs b/src/libstd/sys/unix/backtrace.rs
index cb2edf50ebd..ca1a16d8e17 100644
--- a/src/libstd/sys/unix/backtrace.rs
+++ b/src/libstd/sys/unix/backtrace.rs
@@ -86,7 +86,7 @@
 use prelude::v1::*;
 
 use ffi;
-use io::IoResult;
+use old_io::IoResult;
 use libc;
 use mem;
 use str;
@@ -136,7 +136,7 @@ pub fn write(w: &mut Writer) -> IoResult<()> {
 #[inline(never)] // if we know this is a function call, we can skip it when
                  // tracing
 pub fn write(w: &mut Writer) -> IoResult<()> {
-    use io::IoError;
+    use old_io::IoError;
 
     struct Context<'a> {
         idx: int,
@@ -375,7 +375,7 @@ fn output(w: &mut Writer, idx: int, addr: *mut libc::c_void,
         Some(string) => try!(demangle(w, string)),
         None => try!(write!(w, "<unknown>")),
     }
-    w.write(&['\n' as u8])
+    w.write_all(&['\n' as u8])
 }
 
 /// Unwind library interface used for backtraces
diff --git a/src/libstd/sys/unix/ext.rs b/src/libstd/sys/unix/ext.rs
index 3cff5be071c..4a82b2807e7 100644
--- a/src/libstd/sys/unix/ext.rs
+++ b/src/libstd/sys/unix/ext.rs
@@ -18,7 +18,7 @@
 //! ```rust,ignore
 //! #![feature(globs)]
 //!
-//! use std::io::fs::File;
+//! use std::old_io::fs::File;
 //! use std::os::unix::prelude::*;
 //!
 //! fn main() {
@@ -37,7 +37,7 @@ use sys_common::{AsInner, IntoInner, FromInner};
 use ffi::{OsStr, OsString};
 use libc;
 
-use io;
+use old_io;
 
 /// Raw file descriptors.
 pub type Fd = libc::c_int;
@@ -48,55 +48,55 @@ pub trait AsRawFd {
     fn as_raw_fd(&self) -> Fd;
 }
 
-impl AsRawFd for io::fs::File {
+impl AsRawFd for old_io::fs::File {
     fn as_raw_fd(&self) -> Fd {
         self.as_inner().fd()
     }
 }
 
-impl AsRawFd for io::pipe::PipeStream {
+impl AsRawFd for old_io::pipe::PipeStream {
     fn as_raw_fd(&self) -> Fd {
         self.as_inner().fd()
     }
 }
 
-impl AsRawFd for io::net::pipe::UnixStream {
+impl AsRawFd for old_io::net::pipe::UnixStream {
     fn as_raw_fd(&self) -> Fd {
         self.as_inner().fd()
     }
 }
 
-impl AsRawFd for io::net::pipe::UnixListener {
+impl AsRawFd for old_io::net::pipe::UnixListener {
     fn as_raw_fd(&self) -> Fd {
         self.as_inner().fd()
     }
 }
 
-impl AsRawFd for io::net::pipe::UnixAcceptor {
+impl AsRawFd for old_io::net::pipe::UnixAcceptor {
     fn as_raw_fd(&self) -> Fd {
         self.as_inner().fd()
     }
 }
 
-impl AsRawFd for io::net::tcp::TcpStream {
+impl AsRawFd for old_io::net::tcp::TcpStream {
     fn as_raw_fd(&self) -> Fd {
         self.as_inner().fd()
     }
 }
 
-impl AsRawFd for io::net::tcp::TcpListener {
+impl AsRawFd for old_io::net::tcp::TcpListener {
     fn as_raw_fd(&self) -> Fd {
         self.as_inner().fd()
     }
 }
 
-impl AsRawFd for io::net::tcp::TcpAcceptor {
+impl AsRawFd for old_io::net::tcp::TcpAcceptor {
     fn as_raw_fd(&self) -> Fd {
         self.as_inner().fd()
     }
 }
 
-impl AsRawFd for io::net::udp::UdpSocket {
+impl AsRawFd for old_io::net::udp::UdpSocket {
     fn as_raw_fd(&self) -> Fd {
         self.as_inner().fd()
     }
diff --git a/src/libstd/sys/unix/fs.rs b/src/libstd/sys/unix/fs.rs
index dd478347f81..66ae018cb36 100644
--- a/src/libstd/sys/unix/fs.rs
+++ b/src/libstd/sys/unix/fs.rs
@@ -13,10 +13,10 @@
 use prelude::v1::*;
 
 use ffi::{self, CString};
-use io::{FilePermission, Write, UnstableFileStat, Open, FileAccess, FileMode};
-use io::{IoResult, FileStat, SeekStyle};
-use io::{Read, Truncate, SeekCur, SeekSet, ReadWrite, SeekEnd, Append};
-use io;
+use old_io::{FilePermission, Write, UnstableFileStat, Open, FileAccess, FileMode};
+use old_io::{IoResult, FileStat, SeekStyle};
+use old_io::{Read, Truncate, SeekCur, SeekSet, ReadWrite, SeekEnd, Append};
+use old_io;
 use libc::{self, c_int, c_void};
 use mem;
 use ptr;
@@ -304,12 +304,12 @@ fn mkstat(stat: &libc::stat) -> FileStat {
     FileStat {
         size: stat.st_size as u64,
         kind: match (stat.st_mode as libc::mode_t) & libc::S_IFMT {
-            libc::S_IFREG => io::FileType::RegularFile,
-            libc::S_IFDIR => io::FileType::Directory,
-            libc::S_IFIFO => io::FileType::NamedPipe,
-            libc::S_IFBLK => io::FileType::BlockSpecial,
-            libc::S_IFLNK => io::FileType::Symlink,
-            _ => io::FileType::Unknown,
+            libc::S_IFREG => old_io::FileType::RegularFile,
+            libc::S_IFDIR => old_io::FileType::Directory,
+            libc::S_IFIFO => old_io::FileType::NamedPipe,
+            libc::S_IFBLK => old_io::FileType::BlockSpecial,
+            libc::S_IFLNK => old_io::FileType::Symlink,
+            _ => old_io::FileType::Unknown,
         },
         perm: FilePermission::from_bits_truncate(stat.st_mode as u32),
         created: mktime(stat.st_ctime as u64, stat.st_ctime_nsec as u64),
diff --git a/src/libstd/sys/unix/mod.rs b/src/libstd/sys/unix/mod.rs
index 5493bc20a87..f2f2e7436bf 100644
--- a/src/libstd/sys/unix/mod.rs
+++ b/src/libstd/sys/unix/mod.rs
@@ -18,7 +18,7 @@
 use prelude::v1::*;
 
 use ffi;
-use io::{self, IoResult, IoError};
+use old_io::{self, IoResult, IoError};
 use libc;
 use num::{Int, SignedInt};
 use num;
@@ -94,35 +94,35 @@ pub fn last_gai_error(s: libc::c_int) -> IoError {
 pub fn decode_error(errno: i32) -> IoError {
     // FIXME: this should probably be a bit more descriptive...
     let (kind, desc) = match errno {
-        libc::EOF => (io::EndOfFile, "end of file"),
-        libc::ECONNREFUSED => (io::ConnectionRefused, "connection refused"),
-        libc::ECONNRESET => (io::ConnectionReset, "connection reset"),
+        libc::EOF => (old_io::EndOfFile, "end of file"),
+        libc::ECONNREFUSED => (old_io::ConnectionRefused, "connection refused"),
+        libc::ECONNRESET => (old_io::ConnectionReset, "connection reset"),
         libc::EPERM | libc::EACCES =>
-            (io::PermissionDenied, "permission denied"),
-        libc::EPIPE => (io::BrokenPipe, "broken pipe"),
-        libc::ENOTCONN => (io::NotConnected, "not connected"),
-        libc::ECONNABORTED => (io::ConnectionAborted, "connection aborted"),
-        libc::EADDRNOTAVAIL => (io::ConnectionRefused, "address not available"),
-        libc::EADDRINUSE => (io::ConnectionRefused, "address in use"),
-        libc::ENOENT => (io::FileNotFound, "no such file or directory"),
-        libc::EISDIR => (io::InvalidInput, "illegal operation on a directory"),
-        libc::ENOSYS => (io::IoUnavailable, "function not implemented"),
-        libc::EINVAL => (io::InvalidInput, "invalid argument"),
+            (old_io::PermissionDenied, "permission denied"),
+        libc::EPIPE => (old_io::BrokenPipe, "broken pipe"),
+        libc::ENOTCONN => (old_io::NotConnected, "not connected"),
+        libc::ECONNABORTED => (old_io::ConnectionAborted, "connection aborted"),
+        libc::EADDRNOTAVAIL => (old_io::ConnectionRefused, "address not available"),
+        libc::EADDRINUSE => (old_io::ConnectionRefused, "address in use"),
+        libc::ENOENT => (old_io::FileNotFound, "no such file or directory"),
+        libc::EISDIR => (old_io::InvalidInput, "illegal operation on a directory"),
+        libc::ENOSYS => (old_io::IoUnavailable, "function not implemented"),
+        libc::EINVAL => (old_io::InvalidInput, "invalid argument"),
         libc::ENOTTY =>
-            (io::MismatchedFileTypeForOperation,
+            (old_io::MismatchedFileTypeForOperation,
              "file descriptor is not a TTY"),
-        libc::ETIMEDOUT => (io::TimedOut, "operation timed out"),
-        libc::ECANCELED => (io::TimedOut, "operation aborted"),
+        libc::ETIMEDOUT => (old_io::TimedOut, "operation timed out"),
+        libc::ECANCELED => (old_io::TimedOut, "operation aborted"),
         libc::consts::os::posix88::EEXIST =>
-            (io::PathAlreadyExists, "path already exists"),
+            (old_io::PathAlreadyExists, "path already exists"),
 
         // These two constants can have the same value on some systems,
         // but different values on others, so we can't use a match
         // clause
         x if x == libc::EAGAIN || x == libc::EWOULDBLOCK =>
-            (io::ResourceUnavailable, "resource temporarily unavailable"),
+            (old_io::ResourceUnavailable, "resource temporarily unavailable"),
 
-        _ => (io::OtherIoError, "unknown error")
+        _ => (old_io::OtherIoError, "unknown error")
     };
     IoError { kind: kind, desc: desc, detail: None }
 }
diff --git a/src/libstd/sys/unix/os.rs b/src/libstd/sys/unix/os.rs
index 2c25af055ee..5d5cda03f01 100644
--- a/src/libstd/sys/unix/os.rs
+++ b/src/libstd/sys/unix/os.rs
@@ -15,7 +15,7 @@ use prelude::v1::*;
 use error::{FromError, Error};
 use ffi::{self, CString};
 use fmt;
-use io::{IoError, IoResult};
+use old_io::{IoError, IoResult};
 use libc::{self, c_int, c_char, c_void};
 use os::TMPBUF_SZ;
 use os;
@@ -198,7 +198,7 @@ pub fn load_self() -> Option<Vec<u8>> {
 pub fn load_self() -> Option<Vec<u8>> {
     use std::io;
 
-    match io::fs::readlink(&Path::new("/proc/curproc/file")) {
+    match old_io::fs::readlink(&Path::new("/proc/curproc/file")) {
         Ok(path) => Some(path.into_vec()),
         Err(..) => None
     }
@@ -206,9 +206,9 @@ pub fn load_self() -> Option<Vec<u8>> {
 
 #[cfg(any(target_os = "linux", target_os = "android"))]
 pub fn load_self() -> Option<Vec<u8>> {
-    use std::io;
+    use old_io;
 
-    match io::fs::readlink(&Path::new("/proc/self/exe")) {
+    match old_io::fs::readlink(&Path::new("/proc/self/exe")) {
         Ok(path) => Some(path.into_vec()),
         Err(..) => None
     }
diff --git a/src/libstd/sys/unix/pipe.rs b/src/libstd/sys/unix/pipe.rs
index 158a1ce2204..16274a2ab08 100644
--- a/src/libstd/sys/unix/pipe.rs
+++ b/src/libstd/sys/unix/pipe.rs
@@ -15,7 +15,7 @@ use libc;
 use mem;
 use sync::{Arc, Mutex};
 use sync::atomic::{AtomicBool, Ordering};
-use io::{self, IoResult, IoError};
+use old_io::{self, IoResult, IoError};
 
 use sys::{self, timer, retry, c, set_nonblocking, wouldblock};
 use sys::fs::{fd_t, FileDesc};
@@ -41,7 +41,7 @@ fn addr_to_sockaddr_un(addr: &CString,
     let len = addr.len();
     if len > s.sun_path.len() - 1 {
         return Err(IoError {
-            kind: io::InvalidInput,
+            kind: old_io::InvalidInput,
             desc: "invalid argument: path must be smaller than SUN_LEN",
             detail: None,
         })
diff --git a/src/libstd/sys/unix/process.rs b/src/libstd/sys/unix/process.rs
index 2b4d168d881..6e12432649f 100644
--- a/src/libstd/sys/unix/process.rs
+++ b/src/libstd/sys/unix/process.rs
@@ -15,8 +15,8 @@ use collections::HashMap;
 use collections::hash_map::Hasher;
 use ffi::CString;
 use hash::Hash;
-use io::process::{ProcessExit, ExitStatus, ExitSignal};
-use io::{self, IoResult, IoError, EndOfFile};
+use old_io::process::{ProcessExit, ExitStatus, ExitSignal};
+use old_io::{self, IoResult, IoError, EndOfFile};
 use libc::{self, pid_t, c_void, c_int};
 use mem;
 use os;
diff --git a/src/libstd/sys/unix/tcp.rs b/src/libstd/sys/unix/tcp.rs
index 59eebd3f28e..c8f9d318482 100644
--- a/src/libstd/sys/unix/tcp.rs
+++ b/src/libstd/sys/unix/tcp.rs
@@ -10,8 +10,8 @@
 
 use prelude::v1::*;
 
-use io::net::ip;
-use io::IoResult;
+use old_io::net::ip;
+use old_io::IoResult;
 use libc;
 use mem;
 use ptr;
diff --git a/src/libstd/sys/unix/timer.rs b/src/libstd/sys/unix/timer.rs
index c0c231a9e73..6a4e47f58ce 100644
--- a/src/libstd/sys/unix/timer.rs
+++ b/src/libstd/sys/unix/timer.rs
@@ -49,7 +49,7 @@
 use prelude::v1::*;
 use self::Req::*;
 
-use io::IoResult;
+use old_io::IoResult;
 use libc;
 use mem;
 use os;
diff --git a/src/libstd/sys/unix/tty.rs b/src/libstd/sys/unix/tty.rs
index d20469f5106..d414f70152d 100644
--- a/src/libstd/sys/unix/tty.rs
+++ b/src/libstd/sys/unix/tty.rs
@@ -12,7 +12,7 @@ use prelude::v1::*;
 
 use sys::fs::FileDesc;
 use libc::{self, c_int, c_ulong, funcs};
-use io::{self, IoResult, IoError};
+use old_io::{self, IoResult, IoError};
 use sys::c;
 use sys_common;
 
@@ -33,7 +33,7 @@ impl TTY {
             Ok(TTY { fd: FileDesc::new(fd, true) })
         } else {
             Err(IoError {
-                kind: io::MismatchedFileTypeForOperation,
+                kind: old_io::MismatchedFileTypeForOperation,
                 desc: "file descriptor is not a TTY",
                 detail: None,
             })
@@ -67,7 +67,7 @@ impl TTY {
             let mut size = winsize { ws_row: 0, ws_col: 0, ws_xpixel: 0, ws_ypixel: 0 };
             if c::ioctl(self.fd.fd(), TIOCGWINSZ, &mut size) == -1 {
                 Err(IoError {
-                    kind: io::OtherIoError,
+                    kind: old_io::OtherIoError,
                     desc: "Size of terminal could not be determined",
                     detail: None,
                 })
diff --git a/src/libstd/sys/windows/backtrace.rs b/src/libstd/sys/windows/backtrace.rs
index cba7d81937a..a186465f234 100644
--- a/src/libstd/sys/windows/backtrace.rs
+++ b/src/libstd/sys/windows/backtrace.rs
@@ -25,7 +25,7 @@ use dynamic_lib::DynamicLibrary;
 use ffi;
 use core::ops::Index;
 use intrinsics;
-use io::{IoResult, Writer};
+use old_io::{IoResult, Writer};
 use libc;
 use mem;
 use ops::Drop;
@@ -363,10 +363,10 @@ pub fn write(w: &mut Writer) -> IoResult<()> {
             let bytes = unsafe { ffi::c_str_to_bytes(&ptr) };
             match str::from_utf8(bytes) {
                 Ok(s) => try!(demangle(w, s)),
-                Err(..) => try!(w.write(&bytes[..bytes.len()-1])),
+                Err(..) => try!(w.write_all(&bytes[..bytes.len()-1])),
             }
         }
-        try!(w.write(&['\n' as u8]));
+        try!(w.write_all(&['\n' as u8]));
     }
 
     Ok(())
diff --git a/src/libstd/sys/windows/ext.rs b/src/libstd/sys/windows/ext.rs
index 2f45cb78cda..a3bbf5c5fe7 100644
--- a/src/libstd/sys/windows/ext.rs
+++ b/src/libstd/sys/windows/ext.rs
@@ -23,7 +23,7 @@ use sys_common::{AsInner, FromInner};
 use ffi::{OsStr, OsString};
 use libc;
 
-use io;
+use old_io;
 
 /// Raw HANDLEs.
 pub type Handle = libc::HANDLE;
@@ -37,31 +37,31 @@ pub trait AsRawHandle {
     fn as_raw_handle(&self) -> Handle;
 }
 
-impl AsRawHandle for io::fs::File {
+impl AsRawHandle for old_io::fs::File {
     fn as_raw_handle(&self) -> Handle {
         self.as_inner().handle()
     }
 }
 
-impl AsRawHandle for io::pipe::PipeStream {
+impl AsRawHandle for old_io::pipe::PipeStream {
     fn as_raw_handle(&self) -> Handle {
         self.as_inner().handle()
     }
 }
 
-impl AsRawHandle for io::net::pipe::UnixStream {
+impl AsRawHandle for old_io::net::pipe::UnixStream {
     fn as_raw_handle(&self) -> Handle {
         self.as_inner().handle()
     }
 }
 
-impl AsRawHandle for io::net::pipe::UnixListener {
+impl AsRawHandle for old_io::net::pipe::UnixListener {
     fn as_raw_handle(&self) -> Handle {
         self.as_inner().handle()
     }
 }
 
-impl AsRawHandle for io::net::pipe::UnixAcceptor {
+impl AsRawHandle for old_io::net::pipe::UnixAcceptor {
     fn as_raw_handle(&self) -> Handle {
         self.as_inner().handle()
     }
@@ -72,25 +72,25 @@ pub trait AsRawSocket {
     fn as_raw_socket(&self) -> Socket;
 }
 
-impl AsRawSocket for io::net::tcp::TcpStream {
+impl AsRawSocket for old_io::net::tcp::TcpStream {
     fn as_raw_socket(&self) -> Socket {
         self.as_inner().fd()
     }
 }
 
-impl AsRawSocket for io::net::tcp::TcpListener {
+impl AsRawSocket for old_io::net::tcp::TcpListener {
     fn as_raw_socket(&self) -> Socket {
         self.as_inner().socket()
     }
 }
 
-impl AsRawSocket for io::net::tcp::TcpAcceptor {
+impl AsRawSocket for old_io::net::tcp::TcpAcceptor {
     fn as_raw_socket(&self) -> Socket {
         self.as_inner().socket()
     }
 }
 
-impl AsRawSocket for io::net::udp::UdpSocket {
+impl AsRawSocket for old_io::net::udp::UdpSocket {
     fn as_raw_socket(&self) -> Socket {
         self.as_inner().fd()
     }
diff --git a/src/libstd/sys/windows/fs.rs b/src/libstd/sys/windows/fs.rs
index cb8ef7eb66b..d9d1a374651 100644
--- a/src/libstd/sys/windows/fs.rs
+++ b/src/libstd/sys/windows/fs.rs
@@ -18,16 +18,16 @@ use sys::os::fill_utf16_buf_and_decode;
 use path;
 use ptr;
 use str;
-use io;
+use old_io;
 
 use prelude::v1::*;
 use sys;
 use sys::os;
 use sys_common::{keep_going, eof, mkerr_libc};
 
-use io::{FilePermission, Write, UnstableFileStat, Open, FileAccess, FileMode};
-use io::{IoResult, IoError, FileStat, SeekStyle};
-use io::{Read, Truncate, SeekCur, SeekSet, ReadWrite, SeekEnd, Append};
+use old_io::{FilePermission, Write, UnstableFileStat, Open, FileAccess, FileMode};
+use old_io::{IoResult, IoError, FileStat, SeekStyle};
+use old_io::{Read, Truncate, SeekCur, SeekSet, ReadWrite, SeekEnd, Append};
 
 pub type fd_t = libc::c_int;
 
@@ -130,7 +130,7 @@ impl FileDesc {
         return ret;
     }
 
-    pub fn fstat(&self) -> IoResult<io::FileStat> {
+    pub fn fstat(&self) -> IoResult<old_io::FileStat> {
         let mut stat: libc::stat = unsafe { mem::zeroed() };
         match unsafe { libc::fstat(self.fd(), &mut stat) } {
             0 => Ok(mkstat(&stat)),
@@ -268,7 +268,7 @@ pub fn readdir(p: &Path) -> IoResult<Vec<Path>> {
                         Err(..) => {
                             assert!(libc::FindClose(find_handle) != 0);
                             return Err(IoError {
-                                kind: io::InvalidInput,
+                                kind: old_io::InvalidInput,
                                 desc: "path was not valid UTF-16",
                                 detail: Some(format!("path was not valid UTF-16: {:?}", filename)),
                             })
@@ -303,14 +303,14 @@ pub fn unlink(p: &Path) -> IoResult<()> {
             // however, it cannot. To keep the two platforms in line with
             // respect to their behavior, catch this case on windows, attempt to
             // change it to read-write, and then remove the file.
-            if e.kind == io::PermissionDenied {
+            if e.kind == old_io::PermissionDenied {
                 let stat = match stat(p) {
                     Ok(stat) => stat,
                     Err(..) => return Err(e),
                 };
-                if stat.perm.intersects(io::USER_WRITE) { return Err(e) }
+                if stat.perm.intersects(old_io::USER_WRITE) { return Err(e) }
 
-                match chmod(p, (stat.perm | io::USER_WRITE).bits() as uint) {
+                match chmod(p, (stat.perm | old_io::USER_WRITE).bits() as uint) {
                     Ok(()) => do_unlink(&p_utf16),
                     Err(..) => {
                         // Try to put it back as we found it
@@ -406,12 +406,12 @@ fn mkstat(stat: &libc::stat) -> FileStat {
     FileStat {
         size: stat.st_size as u64,
         kind: match (stat.st_mode as libc::c_int) & libc::S_IFMT {
-            libc::S_IFREG => io::FileType::RegularFile,
-            libc::S_IFDIR => io::FileType::Directory,
-            libc::S_IFIFO => io::FileType::NamedPipe,
-            libc::S_IFBLK => io::FileType::BlockSpecial,
-            libc::S_IFLNK => io::FileType::Symlink,
-            _ => io::FileType::Unknown,
+            libc::S_IFREG => old_io::FileType::RegularFile,
+            libc::S_IFDIR => old_io::FileType::Directory,
+            libc::S_IFIFO => old_io::FileType::NamedPipe,
+            libc::S_IFBLK => old_io::FileType::BlockSpecial,
+            libc::S_IFLNK => old_io::FileType::Symlink,
+            _ => old_io::FileType::Unknown,
         },
         perm: FilePermission::from_bits_truncate(stat.st_mode as u32),
         created: stat.st_ctime as u64,
diff --git a/src/libstd/sys/windows/mod.rs b/src/libstd/sys/windows/mod.rs
index 876159623ac..e8b65c9b64e 100644
--- a/src/libstd/sys/windows/mod.rs
+++ b/src/libstd/sys/windows/mod.rs
@@ -22,7 +22,7 @@ use prelude::v1::*;
 
 use num;
 use mem;
-use io::{self, IoResult, IoError};
+use old_io::{self, IoResult, IoError};
 use sync::{Once, ONCE_INIT};
 
 macro_rules! helper_init { (static $name:ident: Helper<$m:ty>) => (
@@ -99,43 +99,43 @@ pub fn last_gai_error(_errno: i32) -> IoError {
 /// Convert an `errno` value into a high-level error variant and description.
 pub fn decode_error(errno: i32) -> IoError {
     let (kind, desc) = match errno {
-        libc::EOF => (io::EndOfFile, "end of file"),
-        libc::ERROR_NO_DATA => (io::BrokenPipe, "the pipe is being closed"),
-        libc::ERROR_FILE_NOT_FOUND => (io::FileNotFound, "file not found"),
-        libc::ERROR_INVALID_NAME => (io::InvalidInput, "invalid file name"),
-        libc::WSAECONNREFUSED => (io::ConnectionRefused, "connection refused"),
-        libc::WSAECONNRESET => (io::ConnectionReset, "connection reset"),
+        libc::EOF => (old_io::EndOfFile, "end of file"),
+        libc::ERROR_NO_DATA => (old_io::BrokenPipe, "the pipe is being closed"),
+        libc::ERROR_FILE_NOT_FOUND => (old_io::FileNotFound, "file not found"),
+        libc::ERROR_INVALID_NAME => (old_io::InvalidInput, "invalid file name"),
+        libc::WSAECONNREFUSED => (old_io::ConnectionRefused, "connection refused"),
+        libc::WSAECONNRESET => (old_io::ConnectionReset, "connection reset"),
         libc::ERROR_ACCESS_DENIED | libc::WSAEACCES =>
-            (io::PermissionDenied, "permission denied"),
+            (old_io::PermissionDenied, "permission denied"),
         libc::WSAEWOULDBLOCK => {
-            (io::ResourceUnavailable, "resource temporarily unavailable")
+            (old_io::ResourceUnavailable, "resource temporarily unavailable")
         }
-        libc::WSAENOTCONN => (io::NotConnected, "not connected"),
-        libc::WSAECONNABORTED => (io::ConnectionAborted, "connection aborted"),
-        libc::WSAEADDRNOTAVAIL => (io::ConnectionRefused, "address not available"),
-        libc::WSAEADDRINUSE => (io::ConnectionRefused, "address in use"),
-        libc::ERROR_BROKEN_PIPE => (io::EndOfFile, "the pipe has ended"),
+        libc::WSAENOTCONN => (old_io::NotConnected, "not connected"),
+        libc::WSAECONNABORTED => (old_io::ConnectionAborted, "connection aborted"),
+        libc::WSAEADDRNOTAVAIL => (old_io::ConnectionRefused, "address not available"),
+        libc::WSAEADDRINUSE => (old_io::ConnectionRefused, "address in use"),
+        libc::ERROR_BROKEN_PIPE => (old_io::EndOfFile, "the pipe has ended"),
         libc::ERROR_OPERATION_ABORTED =>
-            (io::TimedOut, "operation timed out"),
-        libc::WSAEINVAL => (io::InvalidInput, "invalid argument"),
+            (old_io::TimedOut, "operation timed out"),
+        libc::WSAEINVAL => (old_io::InvalidInput, "invalid argument"),
         libc::ERROR_CALL_NOT_IMPLEMENTED =>
-            (io::IoUnavailable, "function not implemented"),
+            (old_io::IoUnavailable, "function not implemented"),
         libc::ERROR_INVALID_HANDLE =>
-            (io::MismatchedFileTypeForOperation,
+            (old_io::MismatchedFileTypeForOperation,
              "invalid handle provided to function"),
         libc::ERROR_NOTHING_TO_TERMINATE =>
-            (io::InvalidInput, "no process to kill"),
+            (old_io::InvalidInput, "no process to kill"),
         libc::ERROR_ALREADY_EXISTS =>
-            (io::PathAlreadyExists, "path already exists"),
+            (old_io::PathAlreadyExists, "path already exists"),
 
         // libuv maps this error code to EISDIR. we do too. if it is found
         // to be incorrect, we can add in some more machinery to only
         // return this message when ERROR_INVALID_FUNCTION after certain
         // Windows calls.
-        libc::ERROR_INVALID_FUNCTION => (io::InvalidInput,
+        libc::ERROR_INVALID_FUNCTION => (old_io::InvalidInput,
                                          "illegal operation on a directory"),
 
-        _ => (io::OtherIoError, "unknown error")
+        _ => (old_io::OtherIoError, "unknown error")
     };
     IoError { kind: kind, desc: desc, detail: None }
 }
@@ -185,7 +185,7 @@ pub fn init_net() {
 
 pub fn unimpl() -> IoError {
     IoError {
-        kind: io::IoUnavailable,
+        kind: old_io::IoUnavailable,
         desc: "operation is not implemented",
         detail: None,
     }
@@ -199,7 +199,7 @@ pub fn to_utf16(s: Option<&str>) -> IoResult<Vec<u16>> {
             s
         }),
         None => Err(IoError {
-            kind: io::InvalidInput,
+            kind: old_io::InvalidInput,
             desc: "valid unicode input required",
             detail: None
         })
diff --git a/src/libstd/sys/windows/os.rs b/src/libstd/sys/windows/os.rs
index 36dc9b2afe4..a82259ad5ec 100644
--- a/src/libstd/sys/windows/os.rs
+++ b/src/libstd/sys/windows/os.rs
@@ -16,7 +16,7 @@
 use prelude::v1::*;
 
 use fmt;
-use io::{IoResult, IoError};
+use old_io::{IoResult, IoError};
 use iter::repeat;
 use libc::{c_int, c_void};
 use libc;
@@ -162,7 +162,7 @@ pub fn fill_utf16_buf_and_decode<F>(mut f: F) -> Option<String> where
 pub fn getcwd() -> IoResult<Path> {
     use libc::DWORD;
     use libc::GetCurrentDirectoryW;
-    use io::OtherIoError;
+    use old_io::OtherIoError;
 
     let mut buf = [0 as u16; BUF_BYTES];
     unsafe {
diff --git a/src/libstd/sys/windows/pipe.rs b/src/libstd/sys/windows/pipe.rs
index 9996909f2f5..dc9fb3253ff 100644
--- a/src/libstd/sys/windows/pipe.rs
+++ b/src/libstd/sys/windows/pipe.rs
@@ -88,7 +88,7 @@ use prelude::v1::*;
 
 use libc;
 use ffi::CString;
-use io::{self, IoError, IoResult};
+use old_io::{self, IoError, IoResult};
 use mem;
 use ptr;
 use str;
@@ -202,7 +202,7 @@ pub fn await(handle: libc::HANDLE, deadline: u64,
 
 fn epipe() -> IoError {
     IoError {
-        kind: io::EndOfFile,
+        kind: old_io::EndOfFile,
         desc: "the pipe has ended",
         detail: None,
     }
@@ -485,7 +485,7 @@ impl UnixStream {
                         let amt = offset + bytes_written as uint;
                         return if amt > 0 {
                             Err(IoError {
-                                kind: io::ShortWrite(amt),
+                                kind: old_io::ShortWrite(amt),
                                 desc: "short write during write",
                                 detail: None,
                             })
diff --git a/src/libstd/sys/windows/process.rs b/src/libstd/sys/windows/process.rs
index 1b837385d1e..43f9e805db1 100644
--- a/src/libstd/sys/windows/process.rs
+++ b/src/libstd/sys/windows/process.rs
@@ -14,10 +14,10 @@ use collections;
 use ffi::CString;
 use hash::Hash;
 use collections::hash_map::Hasher;
-use io::fs::PathExtensions;
-use io::process::{ProcessExit, ExitStatus, ExitSignal};
-use io::{IoResult, IoError};
-use io;
+use old_io::fs::PathExtensions;
+use old_io::process::{ProcessExit, ExitStatus, ExitSignal};
+use old_io::{IoResult, IoError};
+use old_io;
 use libc::{pid_t, c_void, c_int};
 use libc;
 use mem;
@@ -84,7 +84,7 @@ impl Process {
                     Err(super::last_error())
                 } else if status != libc::STILL_ACTIVE {
                     Err(IoError {
-                        kind: io::InvalidInput,
+                        kind: old_io::InvalidInput,
                         desc: "no process to kill",
                         detail: None,
                     })
@@ -97,7 +97,7 @@ impl Process {
                 super::mkerr_winbool(ret)
             }
             _ => Err(IoError {
-                kind: io::IoUnavailable,
+                kind: old_io::IoUnavailable,
                 desc: "unsupported signal on windows",
                 detail: None,
             })
@@ -133,7 +133,7 @@ impl Process {
 
         if cfg.gid().is_some() || cfg.uid().is_some() {
             return Err(IoError {
-                kind: io::IoUnavailable,
+                kind: old_io::IoUnavailable,
                 desc: "unsupported gid/uid requested on windows",
                 detail: None,
             })
diff --git a/src/libstd/sys/windows/tcp.rs b/src/libstd/sys/windows/tcp.rs
index 77139b52efa..b7e27fb37f0 100644
--- a/src/libstd/sys/windows/tcp.rs
+++ b/src/libstd/sys/windows/tcp.rs
@@ -8,8 +8,8 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-use io::net::ip;
-use io::IoResult;
+use old_io::net::ip;
+use old_io::IoResult;
 use libc;
 use mem;
 use ptr;
diff --git a/src/libstd/sys/windows/timer.rs b/src/libstd/sys/windows/timer.rs
index 12b4e56bf52..34f3c418c55 100644
--- a/src/libstd/sys/windows/timer.rs
+++ b/src/libstd/sys/windows/timer.rs
@@ -26,7 +26,7 @@ use prelude::v1::*;
 use libc;
 use ptr;
 
-use io::IoResult;
+use old_io::IoResult;
 use sync::mpsc::{channel, Sender, Receiver, TryRecvError};
 use sys::c;
 use sys::fs::FileDesc;
diff --git a/src/libstd/sys/windows/tty.rs b/src/libstd/sys/windows/tty.rs
index f9e1f0d3ed0..6ecabfa9853 100644
--- a/src/libstd/sys/windows/tty.rs
+++ b/src/libstd/sys/windows/tty.rs
@@ -27,7 +27,7 @@
 
 use prelude::v1::*;
 
-use io::{self, IoError, IoResult, MemReader};
+use old_io::{self, IoError, IoResult, MemReader};
 use iter::repeat;
 use libc::types::os::arch::extra::LPCVOID;
 use libc::{c_int, HANDLE, LPDWORD, DWORD, LPVOID};
@@ -44,7 +44,7 @@ use super::c::{GetConsoleScreenBufferInfo};
 
 fn invalid_encoding() -> IoError {
     IoError {
-        kind: io::InvalidInput,
+        kind: old_io::InvalidInput,
         desc: "text was not valid unicode",
         detail: None,
     }
@@ -83,7 +83,7 @@ impl TTY {
             })
         } else {
             Err(IoError {
-                kind: io::MismatchedFileTypeForOperation,
+                kind: old_io::MismatchedFileTypeForOperation,
                 desc: "invalid handle provided to function",
                 detail: None,
             })