std: Remove old_io/old_path/rand modules

This commit entirely removes the old I/O, path, and rand modules. All
functionality has been deprecated and unstable for quite some time now!

23 files changed, 13 insertions, 4890 deletions

diff --git a/src/libstd/sys/common/mod.rs b/src/libstd/sys/common/mod.rs
index 8a01eace889..95294b813ea 100644
--- a/src/libstd/sys/common/mod.rs
+++ b/src/libstd/sys/common/mod.rs
@@ -10,24 +10,11 @@
 
 #![allow(missing_docs)]
 
-use old_io::{self, IoError, IoResult};
 use prelude::v1::*;
-use sys::{last_error, retry};
-use ffi::CString;
-#[allow(deprecated)] // Int
-use num::Int;
-
-#[allow(deprecated)]
-use old_path::BytesContainer;
-
-use collections;
-
-#[macro_use] pub mod helper_thread;
 
 pub mod backtrace;
 pub mod condvar;
 pub mod mutex;
-pub mod net;
 pub mod net2;
 pub mod poison;
 pub mod remutex;
@@ -40,72 +27,6 @@ pub mod wtf8;
 
 // common error constructors
 
-#[allow(deprecated)]
-pub fn eof() -> IoError {
-    IoError {
-        kind: old_io::EndOfFile,
-        desc: "end of file",
-        detail: None,
-    }
-}
-
-#[allow(deprecated)]
-pub fn timeout(desc: &'static str) -> IoError {
-    IoError {
-        kind: old_io::TimedOut,
-        desc: desc,
-        detail: None,
-    }
-}
-
-#[allow(deprecated)]
-pub fn short_write(n: usize, desc: &'static str) -> IoError {
-    IoError {
-        kind: if n == 0 { old_io::TimedOut } else { old_io::ShortWrite(n) },
-        desc: desc,
-        detail: None,
-    }
-}
-
-#[allow(deprecated)]
-pub fn unimpl() -> IoError {
-    IoError {
-        kind: old_io::IoUnavailable,
-        desc: "operations not yet supported",
-        detail: None,
-    }
-}
-
-// unix has nonzero values as errors
-#[allow(deprecated)]
-pub fn mkerr_libc<T: Int>(ret: T) -> IoResult<()> {
-    if ret != Int::zero() {
-        Err(last_error())
-    } else {
-        Ok(())
-    }
-}
-
-pub fn keep_going<F>(data: &[u8], mut f: F) -> i64 where
-    F: FnMut(*const u8, usize) -> i64,
-{
-    let origamt = data.len();
-    let mut data = data.as_ptr();
-    let mut amt = origamt;
-    while amt > 0 {
-        let ret = retry(|| f(data, amt));
-        if ret == 0 {
-            break
-        } else if ret != -1 {
-            amt -= ret as usize;
-            data = unsafe { data.offset(ret as isize) };
-        } else {
-            return ret;
-        }
-    }
-    return (origamt - amt) as i64;
-}
-
 /// A trait for viewing representations from std types
 #[doc(hidden)]
 pub trait AsInner<Inner: ?Sized> {
@@ -129,15 +50,3 @@ pub trait IntoInner<Inner> {
 pub trait FromInner<Inner> {
     fn from_inner(inner: Inner) -> Self;
 }
-
-#[doc(hidden)]
-#[allow(deprecated)]
-pub trait ProcessConfig<K: BytesContainer, V: BytesContainer> {
-    fn program(&self) -> &CString;
-    fn args(&self) -> &[CString];
-    fn env(&self) -> Option<&collections::HashMap<K, V>>;
-    fn cwd(&self) -> Option<&CString>;
-    fn uid(&self) -> Option<usize>;
-    fn gid(&self) -> Option<usize>;
-    fn detach(&self) -> bool;
-}
diff --git a/src/libstd/sys/unix/ext.rs b/src/libstd/sys/unix/ext.rs
index fa0f14b4807..0fbcf3aee61 100644
--- a/src/libstd/sys/unix/ext.rs
+++ b/src/libstd/sys/unix/ext.rs
@@ -15,14 +15,12 @@
 //!
 //! # Example
 //!
-//! ```rust,ignore
-//! #![feature(globs)]
-//!
-//! use std::old_io::fs::File;
+//! ```no_run
+//! use std::fs::File;
 //! use std::os::unix::prelude::*;
 //!
 //! fn main() {
-//!     let f = File::create(&Path::new("foo.txt")).unwrap();
+//!     let f = File::create("foo.txt").unwrap();
 //!     let fd = f.as_raw_fd();
 //!
 //!     // use fd with native unix bindings
@@ -34,7 +32,6 @@
 /// Unix-specific extensions to general I/O primitives
 #[stable(feature = "rust1", since = "1.0.0")]
 pub mod io {
-    #[allow(deprecated)] use old_io;
     use fs;
     use libc;
     use net;
@@ -82,14 +79,6 @@ pub mod io {
         unsafe fn from_raw_fd(fd: RawFd) -> Self;
     }
 
-    #[allow(deprecated)]
-    #[stable(feature = "rust1", since = "1.0.0")]
-    impl AsRawFd for old_io::fs::File {
-        fn as_raw_fd(&self) -> RawFd {
-            self.as_inner().fd()
-        }
-    }
-
     #[stable(feature = "rust1", since = "1.0.0")]
     impl AsRawFd for fs::File {
         fn as_raw_fd(&self) -> RawFd {
@@ -103,70 +92,6 @@ pub mod io {
         }
     }
 
-    #[allow(deprecated)]
-    #[stable(feature = "rust1", since = "1.0.0")]
-    impl AsRawFd for old_io::pipe::PipeStream {
-        fn as_raw_fd(&self) -> RawFd {
-            self.as_inner().fd()
-        }
-    }
-
-    #[allow(deprecated)]
-    #[stable(feature = "rust1", since = "1.0.0")]
-    impl AsRawFd for old_io::net::pipe::UnixStream {
-        fn as_raw_fd(&self) -> RawFd {
-            self.as_inner().fd()
-        }
-    }
-
-    #[allow(deprecated)]
-    #[stable(feature = "rust1", since = "1.0.0")]
-    impl AsRawFd for old_io::net::pipe::UnixListener {
-        fn as_raw_fd(&self) -> RawFd {
-            self.as_inner().fd()
-        }
-    }
-
-    #[allow(deprecated)]
-    #[stable(feature = "rust1", since = "1.0.0")]
-    impl AsRawFd for old_io::net::pipe::UnixAcceptor {
-        fn as_raw_fd(&self) -> RawFd {
-            self.as_inner().fd()
-        }
-    }
-
-    #[stable(feature = "rust1", since = "1.0.0")]
-    #[allow(deprecated)]
-    impl AsRawFd for old_io::net::tcp::TcpStream {
-        fn as_raw_fd(&self) -> RawFd {
-            self.as_inner().fd()
-        }
-    }
-
-    #[stable(feature = "rust1", since = "1.0.0")]
-    #[allow(deprecated)]
-    impl AsRawFd for old_io::net::tcp::TcpListener {
-        fn as_raw_fd(&self) -> RawFd {
-            self.as_inner().fd()
-        }
-    }
-
-    #[stable(feature = "rust1", since = "1.0.0")]
-    #[allow(deprecated)]
-    impl AsRawFd for old_io::net::tcp::TcpAcceptor {
-        fn as_raw_fd(&self) -> RawFd {
-            self.as_inner().fd()
-        }
-    }
-
-    #[allow(deprecated)]
-    #[stable(feature = "rust1", since = "1.0.0")]
-    impl AsRawFd for old_io::net::udp::UdpSocket {
-        fn as_raw_fd(&self) -> RawFd {
-            self.as_inner().fd()
-        }
-    }
-
     #[stable(feature = "rust1", since = "1.0.0")]
     impl AsRawFd for net::TcpStream {
         fn as_raw_fd(&self) -> RawFd { *self.as_inner().socket().as_inner() }
diff --git a/src/libstd/sys/unix/fs.rs b/src/libstd/sys/unix/fs.rs
deleted file mode 100644
index 6121105f10b..00000000000
--- a/src/libstd/sys/unix/fs.rs
+++ /dev/null
@@ -1,409 +0,0 @@
-// Copyright 2013-2014 The Rust Project Developers. See the COPYRIGHT
-// file at the top-level directory of this distribution and at
-// http://rust-lang.org/COPYRIGHT.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-//! Blocking posix-based file I/O
-#![allow(deprecated)]
-
-#![allow(deprecated)] // this module itself is essentially deprecated
-
-use prelude::v1::*;
-
-use ffi::{CString, CStr};
-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 old_path::{Path, GenericPath};
-use libc::{self, c_int, c_void};
-use mem;
-use ptr;
-use sys::retry;
-use sys_common::{keep_going, eof, mkerr_libc};
-
-pub type fd_t = libc::c_int;
-
-pub struct FileDesc {
-    /// The underlying C file descriptor.
-    fd: fd_t,
-
-    /// Whether to close the file descriptor on drop.
-    close_on_drop: bool,
-}
-
-impl FileDesc {
-    pub fn new(fd: fd_t, close_on_drop: bool) -> FileDesc {
-        FileDesc { fd: fd, close_on_drop: close_on_drop }
-    }
-
-    pub fn read(&self, buf: &mut [u8]) -> IoResult<usize> {
-        let ret = retry(|| unsafe {
-            libc::read(self.fd(),
-                       buf.as_mut_ptr() as *mut libc::c_void,
-                       buf.len() as libc::size_t)
-        });
-        if ret == 0 {
-            Err(eof())
-        } else if ret < 0 {
-            Err(super::last_error())
-        } else {
-            Ok(ret as usize)
-        }
-    }
-    pub fn write(&self, buf: &[u8]) -> IoResult<()> {
-        let ret = keep_going(buf, |buf, len| {
-            unsafe {
-                libc::write(self.fd(), buf as *const libc::c_void,
-                            len as libc::size_t) as i64
-            }
-        });
-        if ret < 0 {
-            Err(super::last_error())
-        } else {
-            Ok(())
-        }
-    }
-
-    pub fn fd(&self) -> fd_t { self.fd }
-
-    pub fn seek(&self, pos: i64, whence: SeekStyle) -> IoResult<u64> {
-        let whence = match whence {
-            SeekSet => libc::SEEK_SET,
-            SeekEnd => libc::SEEK_END,
-            SeekCur => libc::SEEK_CUR,
-        };
-        let n = unsafe { libc::lseek(self.fd(), pos as libc::off_t, whence) };
-        if n < 0 {
-            Err(super::last_error())
-        } else {
-            Ok(n as u64)
-        }
-    }
-
-    pub fn tell(&self) -> IoResult<u64> {
-        let n = unsafe { libc::lseek(self.fd(), 0, libc::SEEK_CUR) };
-        if n < 0 {
-            Err(super::last_error())
-        } else {
-            Ok(n as u64)
-        }
-    }
-
-    pub fn fsync(&self) -> IoResult<()> {
-        mkerr_libc(retry(|| unsafe { libc::fsync(self.fd()) }))
-    }
-
-    pub fn datasync(&self) -> IoResult<()> {
-        return mkerr_libc(os_datasync(self.fd()));
-
-        #[cfg(any(target_os = "macos", target_os = "ios"))]
-        fn os_datasync(fd: c_int) -> c_int {
-            unsafe { libc::fcntl(fd, libc::F_FULLFSYNC) }
-        }
-        #[cfg(target_os = "linux")]
-        fn os_datasync(fd: c_int) -> c_int {
-            retry(|| unsafe { libc::fdatasync(fd) })
-        }
-        #[cfg(not(any(target_os = "macos", target_os = "ios", target_os = "linux")))]
-        fn os_datasync(fd: c_int) -> c_int {
-            retry(|| unsafe { libc::fsync(fd) })
-        }
-    }
-
-    pub fn truncate(&self, offset: i64) -> IoResult<()> {
-        mkerr_libc(retry(|| unsafe {
-            libc::ftruncate(self.fd(), offset as libc::off_t)
-        }))
-    }
-
-    pub fn fstat(&self) -> IoResult<FileStat> {
-        let mut stat: libc::stat = unsafe { mem::zeroed() };
-        match unsafe { libc::fstat(self.fd(), &mut stat) } {
-            0 => Ok(mkstat(&stat)),
-            _ => Err(super::last_error()),
-        }
-    }
-
-    /// Extract the actual filedescriptor without closing it.
-    pub fn unwrap(self) -> fd_t {
-        let fd = self.fd;
-        unsafe { mem::forget(self) };
-        fd
-    }
-}
-
-impl Drop for FileDesc {
-    fn drop(&mut self) {
-        // closing stdio file handles makes no sense, so never do it. Also, note
-        // that errors are ignored when closing a file descriptor. The reason
-        // for this is that if an error occurs we don't actually know if the
-        // file descriptor was closed or not, and if we retried (for something
-        // like EINTR), we might close another valid file descriptor (opened
-        // after we closed ours.
-        if self.close_on_drop && self.fd > libc::STDERR_FILENO {
-            let n = unsafe { libc::close(self.fd) };
-            if n != 0 {
-                println!("error {} when closing file descriptor {}", n, self.fd);
-            }
-        }
-    }
-}
-
-fn cstr(path: &Path) -> IoResult<CString> {
-    Ok(try!(CString::new(path.as_vec())))
-}
-
-pub fn open(path: &Path, fm: FileMode, fa: FileAccess) -> IoResult<FileDesc> {
-    let flags = match fm {
-        Open => 0,
-        Append => libc::O_APPEND,
-        Truncate => libc::O_TRUNC,
-    };
-    // Opening with a write permission must silently create the file.
-    let (flags, mode) = match fa {
-        Read => (flags | libc::O_RDONLY, 0),
-        Write => (flags | libc::O_WRONLY | libc::O_CREAT,
-                        libc::S_IRUSR | libc::S_IWUSR),
-        ReadWrite => (flags | libc::O_RDWR | libc::O_CREAT,
-                            libc::S_IRUSR | libc::S_IWUSR),
-    };
-
-    let path = try!(cstr(path));
-    match retry(|| unsafe { libc::open(path.as_ptr(), flags, mode) }) {
-        -1 => Err(super::last_error()),
-        fd => Ok(FileDesc::new(fd, true)),
-    }
-}
-
-pub fn mkdir(p: &Path, mode: usize) -> IoResult<()> {
-    let p = try!(cstr(p));
-    mkerr_libc(unsafe { libc::mkdir(p.as_ptr(), mode as libc::mode_t) })
-}
-
-pub fn readdir(p: &Path) -> IoResult<Vec<Path>> {
-    use libc::{dirent_t};
-    use libc::{opendir, readdir_r, closedir};
-
-    fn prune(root: &CString, dirs: Vec<Path>) -> Vec<Path> {
-        let root = Path::new(root);
-
-        dirs.into_iter().filter(|path| {
-            path.as_vec() != b"." && path.as_vec() != b".."
-        }).map(|path| root.join(path)).collect()
-    }
-
-    extern {
-        fn rust_dirent_t_size() -> libc::c_int;
-        fn rust_list_dir_val(ptr: *mut dirent_t) -> *const libc::c_char;
-    }
-
-    let size = unsafe { rust_dirent_t_size() };
-    let mut buf = Vec::<u8>::with_capacity(size as usize);
-    let ptr = buf.as_mut_ptr() as *mut dirent_t;
-
-    let p = try!(CString::new(p.as_vec()));
-    let dir_ptr = unsafe {opendir(p.as_ptr())};
-
-    if dir_ptr as usize != 0 {
-        let mut paths = vec!();
-        let mut entry_ptr = ptr::null_mut();
-        while unsafe { readdir_r(dir_ptr, ptr, &mut entry_ptr) == 0 } {
-            if entry_ptr.is_null() { break }
-            paths.push(unsafe {
-                Path::new(CStr::from_ptr(rust_list_dir_val(entry_ptr)).to_bytes())
-            });
-        }
-        assert_eq!(unsafe { closedir(dir_ptr) }, 0);
-        Ok(prune(&p, paths))
-    } else {
-        Err(super::last_error())
-    }
-}
-
-pub fn unlink(p: &Path) -> IoResult<()> {
-    let p = try!(cstr(p));
-    mkerr_libc(unsafe { libc::unlink(p.as_ptr()) })
-}
-
-pub fn rename(old: &Path, new: &Path) -> IoResult<()> {
-    let old = try!(cstr(old));
-    let new = try!(cstr(new));
-    mkerr_libc(unsafe {
-        libc::rename(old.as_ptr(), new.as_ptr())
-    })
-}
-
-pub fn chmod(p: &Path, mode: usize) -> IoResult<()> {
-    let p = try!(cstr(p));
-    mkerr_libc(retry(|| unsafe {
-        libc::chmod(p.as_ptr(), mode as libc::mode_t)
-    }))
-}
-
-pub fn rmdir(p: &Path) -> IoResult<()> {
-    let p = try!(cstr(p));
-    mkerr_libc(unsafe { libc::rmdir(p.as_ptr()) })
-}
-
-pub fn chown(p: &Path, uid: isize, gid: isize) -> IoResult<()> {
-    let p = try!(cstr(p));
-    mkerr_libc(retry(|| unsafe {
-        libc::chown(p.as_ptr(), uid as libc::uid_t, gid as libc::gid_t)
-    }))
-}
-
-pub fn readlink(p: &Path) -> IoResult<Path> {
-    let c_path = try!(cstr(p));
-    let p = c_path.as_ptr();
-    let mut len = unsafe { libc::pathconf(p as *mut _, libc::_PC_NAME_MAX) };
-    if len == -1 {
-        len = 1024; // FIXME: read PATH_MAX from C ffi?
-    }
-    let mut buf: Vec<u8> = Vec::with_capacity(len as usize);
-    match unsafe {
-        libc::readlink(p, buf.as_ptr() as *mut libc::c_char,
-                       len as libc::size_t) as libc::c_int
-    } {
-        -1 => Err(super::last_error()),
-        n => {
-            assert!(n > 0);
-            unsafe { buf.set_len(n as usize); }
-            Ok(Path::new(buf))
-        }
-    }
-}
-
-pub fn symlink(src: &Path, dst: &Path) -> IoResult<()> {
-    let src = try!(cstr(src));
-    let dst = try!(cstr(dst));
-    mkerr_libc(unsafe { libc::symlink(src.as_ptr(), dst.as_ptr()) })
-}
-
-pub fn link(src: &Path, dst: &Path) -> IoResult<()> {
-    let src = try!(cstr(src));
-    let dst = try!(cstr(dst));
-    mkerr_libc(unsafe { libc::link(src.as_ptr(), dst.as_ptr()) })
-}
-
-fn mkstat(stat: &libc::stat) -> FileStat {
-    // FileStat times are in milliseconds
-    fn mktime(secs: u64, nsecs: u64) -> u64 { secs * 1000 + nsecs / 1000000 }
-
-    fn ctime(stat: &libc::stat) -> u64 {
-      mktime(stat.st_ctime as u64, stat.st_ctime_nsec as u64)
-    }
-
-    fn atime(stat: &libc::stat) -> u64 {
-      mktime(stat.st_atime as u64, stat.st_atime_nsec as u64)
-    }
-
-    fn mtime(stat: &libc::stat) -> u64 {
-      mktime(stat.st_mtime as u64, stat.st_mtime_nsec as u64)
-    }
-
-    #[cfg(not(any(target_os = "linux", target_os = "android")))]
-    fn flags(stat: &libc::stat) -> u64 { stat.st_flags as u64 }
-    #[cfg(any(target_os = "linux", target_os = "android"))]
-    fn flags(_stat: &libc::stat) -> u64 { 0 }
-
-    #[cfg(not(any(target_os = "linux", target_os = "android")))]
-    fn gen(stat: &libc::stat) -> u64 { stat.st_gen as u64 }
-    #[cfg(any(target_os = "linux", target_os = "android"))]
-    fn gen(_stat: &libc::stat) -> u64 { 0 }
-
-    FileStat {
-        size: stat.st_size as u64,
-        kind: match (stat.st_mode as libc::mode_t) & libc::S_IFMT {
-            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: ctime(stat),
-        modified: mtime(stat),
-        accessed: atime(stat),
-        unstable: UnstableFileStat {
-            device: stat.st_dev as u64,
-            inode: stat.st_ino as u64,
-            rdev: stat.st_rdev as u64,
-            nlink: stat.st_nlink as u64,
-            uid: stat.st_uid as u64,
-            gid: stat.st_gid as u64,
-            blksize: stat.st_blksize as u64,
-            blocks: stat.st_blocks as u64,
-            flags: flags(stat),
-            gen: gen(stat),
-        },
-    }
-}
-
-pub fn stat(p: &Path) -> IoResult<FileStat> {
-    let p = try!(cstr(p));
-    let mut stat: libc::stat = unsafe { mem::zeroed() };
-    match unsafe { libc::stat(p.as_ptr(), &mut stat) } {
-        0 => Ok(mkstat(&stat)),
-        _ => Err(super::last_error()),
-    }
-}
-
-pub fn lstat(p: &Path) -> IoResult<FileStat> {
-    let p = try!(cstr(p));
-    let mut stat: libc::stat = unsafe { mem::zeroed() };
-    match unsafe { libc::lstat(p.as_ptr(), &mut stat) } {
-        0 => Ok(mkstat(&stat)),
-        _ => Err(super::last_error()),
-    }
-}
-
-pub fn utime(p: &Path, atime: u64, mtime: u64) -> IoResult<()> {
-    let p = try!(cstr(p));
-    let buf = libc::utimbuf {
-        actime: (atime / 1000) as libc::time_t,
-        modtime: (mtime / 1000) as libc::time_t,
-    };
-    mkerr_libc(unsafe { libc::utime(p.as_ptr(), &buf) })
-}
-
-#[cfg(test)]
-mod tests {
-    use super::FileDesc;
-    use libc;
-    use os;
-    use prelude::v1::*;
-
-    #[cfg_attr(any(target_os = "freebsd",
-                   target_os = "openbsd",
-                   target_os = "bitrig"),
-               ignore)]
-    // under some system, pipe(2) will return a bidrectionnal pipe
-    #[test]
-    fn test_file_desc() {
-        // Run this test with some pipes so we don't have to mess around with
-        // opening or closing files.
-        let (mut reader, mut writer) = unsafe { ::sys::os::pipe().unwrap() };
-
-        writer.write(b"test").unwrap();
-        let mut buf = [0; 4];
-        match reader.read(&mut buf) {
-            Ok(4) => {
-                assert_eq!(buf[0], 't' as u8);
-                assert_eq!(buf[1], 'e' as u8);
-                assert_eq!(buf[2], 's' as u8);
-                assert_eq!(buf[3], 't' as u8);
-            }
-            r => panic!("invalid read: {:?}", r),
-        }
-
-        assert!(writer.read(&mut buf).is_err());
-        assert!(reader.write(&buf).is_err());
-    }
-}
diff --git a/src/libstd/sys/unix/mod.rs b/src/libstd/sys/unix/mod.rs
index e8409bb4fd4..a8a6219f398 100644
--- a/src/libstd/sys/unix/mod.rs
+++ b/src/libstd/sys/unix/mod.rs
@@ -13,124 +13,30 @@
 
 use prelude::v1::*;
 
-use ffi::CStr;
 use io::{self, ErrorKind};
 use libc;
 use num::{Int, SignedInt};
-use old_io::{self, IoError};
-use str;
-use sys_common::mkerr_libc;
 
 pub mod backtrace;
 pub mod c;
 pub mod condvar;
 pub mod ext;
 pub mod fd;
-pub mod fs;  // support for std::old_io
-pub mod fs2; // support for std::fs
-pub mod helper_signal;
+pub mod fs2;
 pub mod mutex;
 pub mod net;
 pub mod os;
 pub mod os_str;
-pub mod pipe;
 pub mod pipe2;
-pub mod process;
 pub mod process2;
 pub mod rwlock;
 pub mod stack_overflow;
 pub mod sync;
-pub mod tcp;
 pub mod thread;
 pub mod thread_local;
 pub mod time;
-pub mod timer;
-pub mod tty;
-pub mod udp;
 pub mod stdio;
 
-pub mod addrinfo {
-    pub use sys_common::net::get_host_addresses;
-    pub use sys_common::net::get_address_name;
-}
-
-// FIXME: move these to c module
-pub type sock_t = self::fs::fd_t;
-pub type wrlen = libc::size_t;
-pub type msglen_t = libc::size_t;
-pub unsafe fn close_sock(sock: sock_t) { let _ = libc::close(sock); }
-
-#[allow(deprecated)]
-pub fn last_error() -> IoError {
-    decode_error_detailed(os::errno() as i32)
-}
-
-#[allow(deprecated)]
-pub fn last_net_error() -> IoError {
-    last_error()
-}
-
-extern "system" {
-    fn gai_strerror(errcode: libc::c_int) -> *const libc::c_char;
-}
-
-#[allow(deprecated)]
-pub fn last_gai_error(s: libc::c_int) -> IoError {
-
-    let mut err = decode_error(s);
-    err.detail = Some(unsafe {
-        let data = CStr::from_ptr(gai_strerror(s));
-        str::from_utf8(data.to_bytes()).unwrap().to_string()
-    });
-    err
-}
-
-/// Convert an `errno` value into a high-level error variant and description.
-#[allow(deprecated)]
-pub fn decode_error(errno: i32) -> IoError {
-    // FIXME: this should probably be a bit more descriptive...
-    let (kind, desc) = match errno {
-        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 =>
-            (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 =>
-            (old_io::MismatchedFileTypeForOperation,
-             "file descriptor is not a TTY"),
-        libc::ETIMEDOUT => (old_io::TimedOut, "operation timed out"),
-        libc::ECANCELED => (old_io::TimedOut, "operation aborted"),
-        libc::consts::os::posix88::EEXIST =>
-            (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 =>
-            (old_io::ResourceUnavailable, "resource temporarily unavailable"),
-
-        _ => (old_io::OtherIoError, "unknown error")
-    };
-    IoError { kind: kind, desc: desc, detail: None }
-}
-
-#[allow(deprecated)]
-pub fn decode_error_detailed(errno: i32) -> IoError {
-    let mut err = decode_error(errno);
-    err.detail = Some(os::error_string(errno));
-    err
-}
-
-#[allow(deprecated)]
 pub fn decode_error_kind(errno: i32) -> ErrorKind {
     match errno as libc::c_int {
         libc::ECONNREFUSED => ErrorKind::ConnectionRefused,
@@ -199,18 +105,3 @@ pub fn ms_to_timeval(ms: u64) -> libc::timeval {
         tv_usec: ((ms % 1000) * 1000) as libc::suseconds_t,
     }
 }
-
-#[allow(deprecated)]
-pub fn wouldblock() -> bool {
-    let err = os::errno();
-    err == libc::EWOULDBLOCK as i32 || err == libc::EAGAIN as i32
-}
-
-#[allow(deprecated)]
-pub fn set_nonblocking(fd: sock_t, nb: bool) {
-    let set = nb as libc::c_int;
-    mkerr_libc(retry(|| unsafe { c::ioctl(fd, c::FIONBIO, &set) })).unwrap();
-}
-
-// nothing needed on unix platforms
-pub fn init_net() {}
diff --git a/src/libstd/sys/unix/os.rs b/src/libstd/sys/unix/os.rs
index d2220bdec32..1c6a13352ff 100644
--- a/src/libstd/sys/unix/os.rs
+++ b/src/libstd/sys/unix/os.rs
@@ -22,14 +22,12 @@ use io;
 use iter;
 use libc::{self, c_int, c_char, c_void};
 use mem;
-#[allow(deprecated)] use old_io::{IoError, IoResult};
 use ptr;
 use path::{self, PathBuf};
 use slice;
 use str;
 use sys::c;
 use sys::fd;
-use sys::fs::FileDesc;
 use vec;
 
 const BUF_BYTES: usize = 2048;
@@ -448,16 +446,6 @@ pub fn unsetenv(n: &OsStr) {
     }
 }
 
-#[allow(deprecated)]
-pub unsafe fn pipe() -> IoResult<(FileDesc, FileDesc)> {
-    let mut fds = [0; 2];
-    if libc::pipe(fds.as_mut_ptr()) == 0 {
-        Ok((FileDesc::new(fds[0], true), FileDesc::new(fds[1], true)))
-    } else {
-        Err(IoError::last_error())
-    }
-}
-
 pub fn page_size() -> usize {
     unsafe {
         libc::sysconf(libc::_SC_PAGESIZE) as usize
diff --git a/src/libstd/sys/unix/pipe.rs b/src/libstd/sys/unix/pipe.rs
deleted file mode 100644
index f0071295bf2..00000000000
--- a/src/libstd/sys/unix/pipe.rs
+++ /dev/null
@@ -1,328 +0,0 @@
-// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
-// file at the top-level directory of this distribution and at
-// http://rust-lang.org/COPYRIGHT.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-#![allow(deprecated)]
-
-use prelude::v1::*;
-
-use ffi::CString;
-use libc;
-use mem;
-use sync::{Arc, Mutex};
-use sync::atomic::{AtomicBool, Ordering};
-use old_io::{self, IoResult, IoError};
-
-use sys::{self, timer, retry, c, set_nonblocking, wouldblock};
-use sys::fs::{fd_t, FileDesc};
-use sys_common::net::*;
-use sys_common::net::SocketStatus::*;
-use sys_common::{eof, mkerr_libc};
-
-fn unix_socket(ty: libc::c_int) -> IoResult<fd_t> {
-    match unsafe { libc::socket(libc::AF_UNIX, ty, 0) } {
-        -1 => Err(super::last_error()),
-        fd => Ok(fd)
-    }
-}
-
-fn addr_to_sockaddr_un(addr: &CString,
-                       storage: &mut libc::sockaddr_storage)
-                       -> IoResult<libc::socklen_t> {
-    // the sun_path length is limited to SUN_LEN (with null)
-    assert!(mem::size_of::<libc::sockaddr_storage>() >=
-            mem::size_of::<libc::sockaddr_un>());
-    let s = unsafe { &mut *(storage as *mut _ as *mut libc::sockaddr_un) };
-
-    let len = addr.as_bytes().len();
-    if len > s.sun_path.len() - 1 {
-        return Err(IoError {
-            kind: old_io::InvalidInput,
-            desc: "invalid argument: path must be smaller than SUN_LEN",
-            detail: None,
-        })
-    }
-    s.sun_family = libc::AF_UNIX as libc::sa_family_t;
-    for (slot, value) in s.sun_path.iter_mut().zip(addr.as_bytes().iter()) {
-        *slot = *value as libc::c_char;
-    }
-
-    // count the null terminator
-    let len = mem::size_of::<libc::sa_family_t>() + len + 1;
-    return Ok(len as libc::socklen_t);
-}
-
-struct Inner {
-    fd: fd_t,
-
-    // Unused on Linux, where this lock is not necessary.
-    #[allow(dead_code)]
-    lock: Mutex<()>,
-}
-
-impl Inner {
-    fn new(fd: fd_t) -> Inner {
-        Inner { fd: fd, lock: Mutex::new(()) }
-    }
-}
-
-impl Drop for Inner {
-    fn drop(&mut self) { unsafe { let _ = libc::close(self.fd); } }
-}
-
-fn connect(addr: &CString, ty: libc::c_int,
-           timeout: Option<u64>) -> IoResult<Inner> {
-    let mut storage = unsafe { mem::zeroed() };
-    let len = try!(addr_to_sockaddr_un(addr, &mut storage));
-    let inner = Inner::new(try!(unix_socket(ty)));
-    let addrp = &storage as *const _ as *const libc::sockaddr;
-
-    match timeout {
-        None => {
-            match retry(|| unsafe { libc::connect(inner.fd, addrp, len) }) {
-                -1 => Err(super::last_error()),
-                _  => Ok(inner)
-            }
-        }
-        Some(timeout_ms) => {
-            try!(connect_timeout(inner.fd, addrp, len, timeout_ms));
-            Ok(inner)
-        }
-    }
-}
-
-fn bind(addr: &CString, ty: libc::c_int) -> IoResult<Inner> {
-    let mut storage = unsafe { mem::zeroed() };
-    let len = try!(addr_to_sockaddr_un(addr, &mut storage));
-    let inner = Inner::new(try!(unix_socket(ty)));
-    let addrp = &storage as *const _ as *const libc::sockaddr;
-    match unsafe {
-        libc::bind(inner.fd, addrp, len)
-    } {
-        -1 => Err(super::last_error()),
-        _  => Ok(inner)
-    }
-}
-
-////////////////////////////////////////////////////////////////////////////////
-// Unix Streams
-////////////////////////////////////////////////////////////////////////////////
-
-pub struct UnixStream {
-    inner: Arc<Inner>,
-    read_deadline: u64,
-    write_deadline: u64,
-}
-
-impl UnixStream {
-    pub fn connect(addr: &CString,
-                   timeout: Option<u64>) -> IoResult<UnixStream> {
-        connect(addr, libc::SOCK_STREAM, timeout).map(|inner| {
-            UnixStream::new(Arc::new(inner))
-        })
-    }
-
-    fn new(inner: Arc<Inner>) -> UnixStream {
-        UnixStream {
-            inner: inner,
-            read_deadline: 0,
-            write_deadline: 0,
-        }
-    }
-
-    pub fn fd(&self) -> fd_t { self.inner.fd }
-
-    #[cfg(target_os = "linux")]
-    fn lock_nonblocking(&self) {}
-
-    #[cfg(not(target_os = "linux"))]
-    fn lock_nonblocking<'a>(&'a self) -> Guard<'a> {
-        let ret = Guard {
-            fd: self.fd(),
-            guard: self.inner.lock.lock().unwrap(),
-        };
-        set_nonblocking(self.fd(), true);
-        ret
-    }
-
-    pub fn read(&mut self, buf: &mut [u8]) -> IoResult<usize> {
-        let fd = self.fd();
-        let dolock = || self.lock_nonblocking();
-        let doread = |nb| unsafe {
-            let flags = if nb {c::MSG_DONTWAIT} else {0};
-            libc::recv(fd,
-                       buf.as_mut_ptr() as *mut libc::c_void,
-                       buf.len() as libc::size_t,
-                       flags) as libc::c_int
-        };
-        read(fd, self.read_deadline, dolock, doread)
-    }
-
-    pub fn write(&mut self, buf: &[u8]) -> IoResult<()> {
-        let fd = self.fd();
-        let dolock = || self.lock_nonblocking();
-        let dowrite = |nb: bool, buf: *const u8, len: usize| unsafe {
-            let flags = if nb {c::MSG_DONTWAIT} else {0};
-            libc::send(fd,
-                       buf as *const _,
-                       len as libc::size_t,
-                       flags) as i64
-        };
-        match write(fd, self.write_deadline, buf, true, dolock, dowrite) {
-            Ok(_) => Ok(()),
-            Err(e) => Err(e)
-        }
-    }
-
-    pub fn close_write(&mut self) -> IoResult<()> {
-        mkerr_libc(unsafe { libc::shutdown(self.fd(), libc::SHUT_WR) })
-    }
-
-    pub fn close_read(&mut self) -> IoResult<()> {
-        mkerr_libc(unsafe { libc::shutdown(self.fd(), libc::SHUT_RD) })
-    }
-
-    pub fn set_timeout(&mut self, timeout: Option<u64>) {
-        let deadline = timeout.map(|a| timer::now() + a).unwrap_or(0);
-        self.read_deadline = deadline;
-        self.write_deadline = deadline;
-    }
-
-    pub fn set_read_timeout(&mut self, timeout: Option<u64>) {
-        self.read_deadline = timeout.map(|a| timer::now() + a).unwrap_or(0);
-    }
-
-    pub fn set_write_timeout(&mut self, timeout: Option<u64>) {
-        self.write_deadline = timeout.map(|a| timer::now() + a).unwrap_or(0);
-    }
-}
-
-impl Clone for UnixStream {
-    fn clone(&self) -> UnixStream {
-        UnixStream::new(self.inner.clone())
-    }
-}
-
-////////////////////////////////////////////////////////////////////////////////
-// Unix Listener
-////////////////////////////////////////////////////////////////////////////////
-
-pub struct UnixListener {
-    inner: Inner,
-    path: CString,
-}
-
-// we currently own the CString, so these impls should be safe
-unsafe impl Send for UnixListener {}
-unsafe impl Sync for UnixListener {}
-
-impl UnixListener {
-    pub fn bind(addr: &CString) -> IoResult<UnixListener> {
-        bind(addr, libc::SOCK_STREAM).map(|fd| {
-            UnixListener { inner: fd, path: addr.clone() }
-        })
-    }
-
-    pub fn fd(&self) -> fd_t { self.inner.fd }
-
-    pub fn listen(self) -> IoResult<UnixAcceptor> {
-        match unsafe { libc::listen(self.fd(), 128) } {
-            -1 => Err(super::last_error()),
-
-            _ => {
-                let (reader, writer) = try!(unsafe { sys::os::pipe() });
-                set_nonblocking(reader.fd(), true);
-                set_nonblocking(writer.fd(), true);
-                set_nonblocking(self.fd(), true);
-                Ok(UnixAcceptor {
-                    inner: Arc::new(AcceptorInner {
-                        listener: self,
-                        reader: reader,
-                        writer: writer,
-                        closed: AtomicBool::new(false),
-                    }),
-                    deadline: 0,
-                })
-            }
-        }
-    }
-}
-
-pub struct UnixAcceptor {
-    inner: Arc<AcceptorInner>,
-    deadline: u64,
-}
-
-struct AcceptorInner {
-    listener: UnixListener,
-    reader: FileDesc,
-    writer: FileDesc,
-    closed: AtomicBool,
-}
-
-impl UnixAcceptor {
-    pub fn fd(&self) -> fd_t { self.inner.listener.fd() }
-
-    pub fn accept(&mut self) -> IoResult<UnixStream> {
-        let deadline = if self.deadline == 0 {None} else {Some(self.deadline)};
-
-        while !self.inner.closed.load(Ordering::SeqCst) {
-            unsafe {
-                let mut storage: libc::sockaddr_storage = mem::zeroed();
-                let storagep = &mut storage as *mut libc::sockaddr_storage;
-                let size = mem::size_of::<libc::sockaddr_storage>();
-                let mut size = size as libc::socklen_t;
-                match retry(|| {
-                    libc::accept(self.fd(),
-                                 storagep as *mut libc::sockaddr,
-                                 &mut size as *mut libc::socklen_t) as libc::c_int
-                }) {
-                    -1 if wouldblock() => {}
-                    -1 => return Err(super::last_error()),
-                    fd => return Ok(UnixStream::new(Arc::new(Inner::new(fd)))),
-                }
-            }
-            try!(await(&[self.fd(), self.inner.reader.fd()],
-                       deadline, Readable));
-        }
-
-        Err(eof())
-    }
-
-    pub fn set_timeout(&mut self, timeout: Option<u64>) {
-        self.deadline = timeout.map(|a| timer::now() + a).unwrap_or(0);
-    }
-
-    pub fn close_accept(&mut self) -> IoResult<()> {
-        self.inner.closed.store(true, Ordering::SeqCst);
-        let fd = FileDesc::new(self.inner.writer.fd(), false);
-        match fd.write(&[0]) {
-            Ok(..) => Ok(()),
-            Err(..) if wouldblock() => Ok(()),
-            Err(e) => Err(e),
-        }
-    }
-}
-
-impl Clone for UnixAcceptor {
-    fn clone(&self) -> UnixAcceptor {
-        UnixAcceptor { inner: self.inner.clone(), deadline: 0 }
-    }
-}
-
-impl Drop for UnixListener {
-    fn drop(&mut self) {
-        // Unlink the path to the socket to ensure that it doesn't linger. We're
-        // careful to unlink the path before we close the file descriptor to
-        // prevent races where we unlink someone else's path.
-        unsafe {
-            let _ = libc::unlink(self.path.as_ptr());
-        }
-    }
-}
diff --git a/src/libstd/sys/unix/process.rs b/src/libstd/sys/unix/process.rs
deleted file mode 100644
index 8095325f83d..00000000000
--- a/src/libstd/sys/unix/process.rs
+++ /dev/null
@@ -1,627 +0,0 @@
-// Copyright 2014-2015 The Rust Project Developers. See the COPYRIGHT
-// file at the top-level directory of this distribution and at
-// http://rust-lang.org/COPYRIGHT.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-#![allow(deprecated)] // this module itself is essentially deprecated
-
-use prelude::v1::*;
-use self::Req::*;
-
-use collections::HashMap;
-use ffi::CString;
-use hash::Hash;
-use old_io::process::{ProcessExit, ExitStatus, ExitSignal};
-use old_io::{IoResult, EndOfFile};
-use libc::{self, pid_t, c_void, c_int};
-use io;
-use mem;
-use sys::os;
-use old_path::BytesContainer;
-use ptr;
-use sync::mpsc::{channel, Sender, Receiver};
-use sys::fs::FileDesc;
-use sys::{self, retry, c, wouldblock, set_nonblocking, ms_to_timeval};
-use sys_common::helper_thread::Helper;
-use sys_common::{AsInner, mkerr_libc, timeout};
-
-pub use sys_common::ProcessConfig;
-
-helper_init! { static HELPER: Helper<Req> }
-
-/// The unique id of the process (this should never be negative).
-pub struct Process {
-    pub pid: pid_t
-}
-
-enum Req {
-    NewChild(libc::pid_t, Sender<ProcessExit>, u64),
-}
-
-const CLOEXEC_MSG_FOOTER: &'static [u8] = b"NOEX";
-
-impl Process {
-    pub fn id(&self) -> pid_t {
-        self.pid
-    }
-
-    pub unsafe fn kill(&self, signal: isize) -> IoResult<()> {
-        Process::killpid(self.pid, signal)
-    }
-
-    pub unsafe fn killpid(pid: pid_t, signal: isize) -> IoResult<()> {
-        let r = libc::funcs::posix88::signal::kill(pid, signal as c_int);
-        mkerr_libc(r)
-    }
-
-    pub fn spawn<K, V, C, P>(cfg: &C, in_fd: Option<P>,
-                              out_fd: Option<P>, err_fd: Option<P>)
-                              -> IoResult<Process>
-        where C: ProcessConfig<K, V>, P: AsInner<FileDesc>,
-              K: BytesContainer + Eq + Hash, V: BytesContainer
-    {
-        use libc::funcs::posix88::unistd::{fork, dup2, close, chdir, execvp};
-
-        mod rustrt {
-            extern {
-                pub fn rust_unset_sigprocmask();
-            }
-        }
-
-        unsafe fn set_cloexec(fd: c_int) {
-            let ret = c::ioctl(fd, c::FIOCLEX);
-            assert_eq!(ret, 0);
-        }
-
-        #[cfg(all(target_os = "android", target_arch = "aarch64"))]
-        unsafe fn getdtablesize() -> c_int {
-            libc::sysconf(libc::consts::os::sysconf::_SC_OPEN_MAX) as c_int
-        }
-        #[cfg(not(all(target_os = "android", target_arch = "aarch64")))]
-        unsafe fn getdtablesize() -> c_int {
-            libc::funcs::bsd44::getdtablesize()
-        }
-
-        let dirp = cfg.cwd().map(|c| c.as_ptr()).unwrap_or(ptr::null());
-
-        // temporary until unboxed closures land
-        let cfg = unsafe {
-            mem::transmute::<&ProcessConfig<K,V>,&'static ProcessConfig<K,V>>(cfg)
-        };
-
-        with_envp(cfg.env(), move|envp: *const c_void| {
-            with_argv(cfg.program(), cfg.args(), move|argv: *const *const libc::c_char| unsafe {
-                let (input, mut output) = try!(sys::os::pipe());
-
-                // We may use this in the child, so perform allocations before the
-                // fork
-                let devnull = b"/dev/null\0";
-
-                set_cloexec(output.fd());
-
-                let pid = fork();
-                if pid < 0 {
-                    return Err(super::last_error())
-                } else if pid > 0 {
-                    #[inline]
-                    fn combine(arr: &[u8]) -> i32 {
-                        let a = arr[0] as u32;
-                        let b = arr[1] as u32;
-                        let c = arr[2] as u32;
-                        let d = arr[3] as u32;
-
-                        ((a << 24) | (b << 16) | (c << 8) | (d << 0)) as i32
-                    }
-
-                    let p = Process{ pid: pid };
-                    drop(output);
-                    let mut bytes = [0; 8];
-                    return match input.read(&mut bytes) {
-                        Ok(8) => {
-                            assert!(combine(CLOEXEC_MSG_FOOTER) == combine(&bytes[4.. 8]),
-                                "Validation on the CLOEXEC pipe failed: {:?}", bytes);
-                            let errno = combine(&bytes[0.. 4]);
-                            assert!(p.wait(0).is_ok(), "wait(0) should either return Ok or panic");
-                            Err(super::decode_error(errno))
-                        }
-                        Err(ref e) if e.kind == EndOfFile => Ok(p),
-                        Err(e) => {
-                            assert!(p.wait(0).is_ok(), "wait(0) should either return Ok or panic");
-                            panic!("the CLOEXEC pipe failed: {:?}", e)
-                        },
-                        Ok(..) => { // pipe I/O up to PIPE_BUF bytes should be atomic
-                            assert!(p.wait(0).is_ok(), "wait(0) should either return Ok or panic");
-                            panic!("short read on the CLOEXEC pipe")
-                        }
-                    };
-                }
-
-                // And at this point we've reached a special time in the life of the
-                // child. The child must now be considered hamstrung and unable to
-                // do anything other than syscalls really. Consider the following
-                // scenario:
-                //
-                //      1. Thread A of process 1 grabs the malloc() mutex
-                //      2. Thread B of process 1 forks(), creating thread C
-                //      3. Thread C of process 2 then attempts to malloc()
-                //      4. The memory of process 2 is the same as the memory of
-                //         process 1, so the mutex is locked.
-                //
-                // This situation looks a lot like deadlock, right? It turns out
-                // that this is what pthread_atfork() takes care of, which is
-                // presumably implemented across platforms. The first thing that
-                // threads to *before* forking is to do things like grab the malloc
-                // mutex, and then after the fork they unlock it.
-                //
-                // Despite this information, libnative's spawn has been witnessed to
-                // deadlock on both OSX and FreeBSD. I'm not entirely sure why, but
-                // all collected backtraces point at malloc/free traffic in the
-                // child spawned process.
-                //
-                // For this reason, the block of code below should contain 0
-                // invocations of either malloc of free (or their related friends).
-                //
-                // As an example of not having malloc/free traffic, we don't close
-                // this file descriptor by dropping the FileDesc (which contains an
-                // allocation). Instead we just close it manually. This will never
-                // have the drop glue anyway because this code never returns (the
-                // child will either exec() or invoke libc::exit)
-                let _ = libc::close(input.fd());
-
-                fn fail(output: &mut FileDesc) -> ! {
-                    let errno = sys::os::errno() as u32;
-                    let bytes = [
-                        (errno >> 24) as u8,
-                        (errno >> 16) as u8,
-                        (errno >>  8) as u8,
-                        (errno >>  0) as u8,
-                        CLOEXEC_MSG_FOOTER[0], CLOEXEC_MSG_FOOTER[1],
-                        CLOEXEC_MSG_FOOTER[2], CLOEXEC_MSG_FOOTER[3]
-                    ];
-                    // pipe I/O up to PIPE_BUF bytes should be atomic
-                    assert!(output.write(&bytes).is_ok());
-                    unsafe { libc::_exit(1) }
-                }
-
-                rustrt::rust_unset_sigprocmask();
-
-                // If a stdio file descriptor is set to be ignored (via a -1 file
-                // descriptor), then we don't actually close it, but rather open
-                // up /dev/null into that file descriptor. Otherwise, the first file
-                // descriptor opened up in the child would be numbered as one of the
-                // stdio file descriptors, which is likely to wreak havoc.
-                let setup = |src: Option<P>, dst: c_int| {
-                    let src = match src {
-                        None => {
-                            let flags = if dst == libc::STDIN_FILENO {
-                                libc::O_RDONLY
-                            } else {
-                                libc::O_RDWR
-                            };
-                            libc::open(devnull.as_ptr() as *const _, flags, 0)
-                        }
-                        Some(obj) => {
-                            let fd = obj.as_inner().fd();
-                            // Leak the memory and the file descriptor. We're in the
-                            // child now an all our resources are going to be
-                            // cleaned up very soon
-                            mem::forget(obj);
-                            fd
-                        }
-                    };
-                    src != -1 && retry(|| dup2(src, dst)) != -1
-                };
-
-                if !setup(in_fd, libc::STDIN_FILENO) { fail(&mut output) }
-                if !setup(out_fd, libc::STDOUT_FILENO) { fail(&mut output) }
-                if !setup(err_fd, libc::STDERR_FILENO) { fail(&mut output) }
-
-                // close all other fds
-                for fd in (3..getdtablesize()).rev() {
-                    if fd != output.fd() {
-                        let _ = close(fd as c_int);
-                    }
-                }
-
-                match cfg.gid() {
-                    Some(u) => {
-                        if libc::setgid(u as libc::gid_t) != 0 {
-                            fail(&mut output);
-                        }
-                    }
-                    None => {}
-                }
-                match cfg.uid() {
-                    Some(u) => {
-                        // When dropping privileges from root, the `setgroups` call
-                        // will remove any extraneous groups. If we don't call this,
-                        // then even though our uid has dropped, we may still have
-                        // groups that enable us to do super-user things. This will
-                        // fail if we aren't root, so don't bother checking the
-                        // return value, this is just done as an optimistic
-                        // privilege dropping function.
-                        extern {
-                            fn setgroups(ngroups: libc::c_int,
-                                         ptr: *const libc::c_void) -> libc::c_int;
-                        }
-                        let _ = setgroups(0, ptr::null());
-
-                        if libc::setuid(u as libc::uid_t) != 0 {
-                            fail(&mut output);
-                        }
-                    }
-                    None => {}
-                }
-                if cfg.detach() {
-                    // Don't check the error of setsid because it fails if we're the
-                    // process leader already. We just forked so it shouldn't return
-                    // error, but ignore it anyway.
-                    let _ = libc::setsid();
-                }
-                if !dirp.is_null() && chdir(dirp) == -1 {
-                    fail(&mut output);
-                }
-                if !envp.is_null() {
-                    *sys::os::environ() = envp as *const _;
-                }
-                let _ = execvp(*argv, argv as *mut _);
-                fail(&mut output);
-            })
-        })
-    }
-
-    pub fn wait(&self, deadline: u64) -> IoResult<ProcessExit> {
-        use cmp;
-        use sync::mpsc::TryRecvError;
-
-        static mut WRITE_FD: libc::c_int = 0;
-
-        let mut status = 0 as c_int;
-        if deadline == 0 {
-            return match retry(|| unsafe { c::waitpid(self.pid, &mut status, 0) }) {
-                -1 => panic!("unknown waitpid error: {:?}", super::last_error()),
-                _ => Ok(translate_status(status)),
-            }
-        }
-
-        // On unix, wait() and its friends have no timeout parameters, so there is
-        // no way to time out a thread in wait(). From some googling and some
-        // thinking, it appears that there are a few ways to handle timeouts in
-        // wait(), but the only real reasonable one for a multi-threaded program is
-        // to listen for SIGCHLD.
-        //
-        // With this in mind, the waiting mechanism with a timeout barely uses
-        // waitpid() at all. There are a few times that waitpid() is invoked with
-        // WNOHANG, but otherwise all the necessary blocking is done by waiting for
-        // a SIGCHLD to arrive (and that blocking has a timeout). Note, however,
-        // that waitpid() is still used to actually reap the child.
-        //
-        // Signal handling is super tricky in general, and this is no exception. Due
-        // to the async nature of SIGCHLD, we use the self-pipe trick to transmit
-        // data out of the signal handler to the rest of the application. The first
-        // idea would be to have each thread waiting with a timeout to read this
-        // output file descriptor, but a write() is akin to a signal(), not a
-        // broadcast(), so it would only wake up one thread, and possibly the wrong
-        // thread. Hence a helper thread is used.
-        //
-        // The helper thread here is responsible for farming requests for a
-        // waitpid() with a timeout, and then processing all of the wait requests.
-        // By guaranteeing that only this helper thread is reading half of the
-        // self-pipe, we're sure that we'll never lose a SIGCHLD. This helper thread
-        // is also responsible for select() to wait for incoming messages or
-        // incoming SIGCHLD messages, along with passing an appropriate timeout to
-        // select() to wake things up as necessary.
-        //
-        // The ordering of the following statements is also very purposeful. First,
-        // we must be guaranteed that the helper thread is booted and available to
-        // receive SIGCHLD signals, and then we must also ensure that we do a
-        // nonblocking waitpid() at least once before we go ask the sigchld helper.
-        // This prevents the race where the child exits, we boot the helper, and
-        // then we ask for the child's exit status (never seeing a sigchld).
-        //
-        // The actual communication between the helper thread and this thread is
-        // quite simple, just a channel moving data around.
-
-        HELPER.boot(register_sigchld, waitpid_helper);
-
-        match self.try_wait() {
-            Some(ret) => return Ok(ret),
-            None => {}
-        }
-
-        let (tx, rx) = channel();
-        HELPER.send(NewChild(self.pid, tx, deadline));
-        return match rx.recv() {
-            Ok(e) => Ok(e),
-            Err(..) => Err(timeout("wait timed out")),
-        };
-
-        // Register a new SIGCHLD handler, returning the reading half of the
-        // self-pipe plus the old handler registered (return value of sigaction).
-        //
-        // Be sure to set up the self-pipe first because as soon as we register a
-        // handler we're going to start receiving signals.
-        fn register_sigchld() -> (libc::c_int, c::sigaction) {
-            unsafe {
-                let mut pipes = [0; 2];
-                assert_eq!(libc::pipe(pipes.as_mut_ptr()), 0);
-                set_nonblocking(pipes[0], true);
-                set_nonblocking(pipes[1], true);
-                WRITE_FD = pipes[1];
-
-                let mut old: c::sigaction = mem::zeroed();
-                let mut new: c::sigaction = mem::zeroed();
-                new.sa_handler = sigchld_handler;
-                new.sa_flags = c::SA_NOCLDSTOP;
-                assert_eq!(c::sigaction(c::SIGCHLD, &new, &mut old), 0);
-                (pipes[0], old)
-            }
-        }
-
-        // Helper thread for processing SIGCHLD messages
-        fn waitpid_helper(input: libc::c_int,
-                          messages: Receiver<Req>,
-                          (read_fd, old): (libc::c_int, c::sigaction)) {
-            set_nonblocking(input, true);
-            let mut set: c::fd_set = unsafe { mem::zeroed() };
-            let mut tv: libc::timeval;
-            let mut active = Vec::<(libc::pid_t, Sender<ProcessExit>, u64)>::new();
-            let max = cmp::max(input, read_fd) + 1;
-
-            'outer: loop {
-                // Figure out the timeout of our syscall-to-happen. If we're waiting
-                // for some processes, then they'll have a timeout, otherwise we
-                // wait indefinitely for a message to arrive.
-                //
-                // FIXME: sure would be nice to not have to scan the entire array
-                let min = active.iter().map(|a| a.2).enumerate().min_by(|p| {
-                    p.1
-                });
-                let (p, idx) = match min {
-                    Some((idx, deadline)) => {
-                        let now = sys::timer::now();
-                        let ms = if now < deadline {deadline - now} else {0};
-                        tv = ms_to_timeval(ms);
-                        (&mut tv as *mut _, idx)
-                    }
-                    None => (ptr::null_mut(), -1),
-                };
-
-                // Wait for something to happen
-                c::fd_set(&mut set, input);
-                c::fd_set(&mut set, read_fd);
-                match unsafe { c::select(max, &mut set, ptr::null_mut(),
-                                         ptr::null_mut(), p) } {
-                    // interrupted, retry
-                    -1 if os::errno() == libc::EINTR as i32 => continue,
-
-                    // We read something, break out and process
-                    1 | 2 => {}
-
-                    // Timeout, the pending request is removed
-                    0 => {
-                        drop(active.remove(idx));
-                        continue
-                    }
-
-                    n => panic!("error in select {:?} ({:?})", os::errno(), n),
-                }
-
-                // Process any pending messages
-                if drain(input) {
-                    loop {
-                        match messages.try_recv() {
-                            Ok(NewChild(pid, tx, deadline)) => {
-                                active.push((pid, tx, deadline));
-                            }
-                            // Once we've been disconnected it means the main
-                            // thread is exiting (at_exit has run). We could
-                            // still have active waiter for other threads, so
-                            // we're just going to drop them all on the floor.
-                            // This means that they won't receive a "you're
-                            // done" message in which case they'll be considered
-                            // as timed out, but more generally errors will
-                            // start propagating.
-                            Err(TryRecvError::Disconnected) => {
-                                break 'outer;
-                            }
-                            Err(TryRecvError::Empty) => break,
-                        }
-                    }
-                }
-
-                // If a child exited (somehow received SIGCHLD), then poll all
-                // children to see if any of them exited.
-                //
-                // We also attempt to be responsible netizens when dealing with
-                // SIGCHLD by invoking any previous SIGCHLD handler instead of just
-                // ignoring any previous SIGCHLD handler. Note that we don't provide
-                // a 1:1 mapping of our handler invocations to the previous handler
-                // invocations because we drain the `read_fd` entirely. This is
-                // probably OK because the kernel is already allowed to coalesce
-                // simultaneous signals, we're just doing some extra coalescing.
-                //
-                // Another point of note is that this likely runs the signal handler
-                // on a different thread than the one that received the signal. I
-                // *think* this is ok at this time.
-                //
-                // The main reason for doing this is to allow stdtest to run native
-                // tests as well. Both libgreen and libnative are running around
-                // with process timeouts, but libgreen should get there first
-                // (currently libuv doesn't handle old signal handlers).
-                if drain(read_fd) {
-                    let i: usize = unsafe { mem::transmute(old.sa_handler) };
-                    if i != 0 {
-                        assert!(old.sa_flags & c::SA_SIGINFO == 0);
-                        (old.sa_handler)(c::SIGCHLD);
-                    }
-
-                    // FIXME: sure would be nice to not have to scan the entire
-                    //        array...
-                    active.retain(|&(pid, ref tx, _)| {
-                        let pr = Process { pid: pid };
-                        match pr.try_wait() {
-                            Some(msg) => { tx.send(msg).unwrap(); false }
-                            None => true,
-                        }
-                    });
-                }
-            }
-
-            // Once this helper thread is done, we re-register the old sigchld
-            // handler and close our intermediate file descriptors.
-            unsafe {
-                assert_eq!(c::sigaction(c::SIGCHLD, &old, ptr::null_mut()), 0);
-                let _ = libc::close(read_fd);
-                let _ = libc::close(WRITE_FD);
-                WRITE_FD = -1;
-            }
-        }
-
-        // Drain all pending data from the file descriptor, returning if any data
-        // could be drained. This requires that the file descriptor is in
-        // nonblocking mode.
-        fn drain(fd: libc::c_int) -> bool {
-            let mut ret = false;
-            loop {
-                let mut buf = [0u8; 1];
-                match unsafe {
-                    libc::read(fd, buf.as_mut_ptr() as *mut libc::c_void,
-                               buf.len() as libc::size_t)
-                } {
-                    n if n > 0 => { ret = true; }
-                    0 => return true,
-                    -1 if wouldblock() => return ret,
-                    n => panic!("bad read {} ({})",
-                                io::Error::last_os_error(), n),
-                }
-            }
-        }
-
-        // Signal handler for SIGCHLD signals, must be async-signal-safe!
-        //
-        // This function will write to the writing half of the "self pipe" to wake
-        // up the helper thread if it's waiting. Note that this write must be
-        // nonblocking because if it blocks and the reader is the thread we
-        // interrupted, then we'll deadlock.
-        //
-        // When writing, if the write returns EWOULDBLOCK then we choose to ignore
-        // it. At that point we're guaranteed that there's something in the pipe
-        // which will wake up the other end at some point, so we just allow this
-        // signal to be coalesced with the pending signals on the pipe.
-        extern fn sigchld_handler(_signum: libc::c_int) {
-            let msg = 1;
-            match unsafe {
-                libc::write(WRITE_FD, &msg as *const _ as *const libc::c_void, 1)
-            } {
-                1 => {}
-                -1 if wouldblock() => {} // see above comments
-                n => panic!("bad error on write fd: {:?} {:?}", n, os::errno()),
-            }
-        }
-    }
-
-    pub fn try_wait(&self) -> Option<ProcessExit> {
-        let mut status = 0 as c_int;
-        match retry(|| unsafe {
-            c::waitpid(self.pid, &mut status, c::WNOHANG)
-        }) {
-            n if n == self.pid => Some(translate_status(status)),
-            0 => None,
-            n => panic!("unknown waitpid error `{:?}`: {:?}", n,
-                       super::last_error()),
-        }
-    }
-}
-
-fn with_argv<T,F>(prog: &CString, args: &[CString],
-                  cb: F)
-                  -> T
-    where F : FnOnce(*const *const libc::c_char) -> T
-{
-    let mut ptrs: Vec<*const libc::c_char> = Vec::with_capacity(args.len()+1);
-
-    // Convert the CStrings into an array of pointers. Note: the
-    // lifetime of the various CStrings involved is guaranteed to be
-    // larger than the lifetime of our invocation of cb, but this is
-    // technically unsafe as the callback could leak these pointers
-    // out of our scope.
-    ptrs.push(prog.as_ptr());
-    ptrs.extend(args.iter().map(|tmp| tmp.as_ptr()));
-
-    // Add a terminating null pointer (required by libc).
-    ptrs.push(ptr::null());
-
-    cb(ptrs.as_ptr())
-}
-
-fn with_envp<K,V,T,F>(env: Option<&HashMap<K, V>>,
-                      cb: F)
-                      -> T
-    where F : FnOnce(*const c_void) -> T,
-          K : BytesContainer + Eq + Hash,
-          V : BytesContainer
-{
-    // On posixy systems we can pass a char** for envp, which is a
-    // null-terminated array of "k=v\0" strings. Since we must create
-    // these strings locally, yet expose a raw pointer to them, we
-    // create a temporary vector to own the CStrings that outlives the
-    // call to cb.
-    match env {
-        Some(env) => {
-            let mut tmps = Vec::with_capacity(env.len());
-
-            for pair in env {
-                let mut kv = Vec::new();
-                kv.push_all(pair.0.container_as_bytes());
-                kv.push('=' as u8);
-                kv.push_all(pair.1.container_as_bytes());
-                kv.push(0); // terminating null
-                tmps.push(kv);
-            }
-
-            // As with `with_argv`, this is unsafe, since cb could leak the pointers.
-            let mut ptrs: Vec<*const libc::c_char> =
-                tmps.iter()
-                    .map(|tmp| tmp.as_ptr() as *const libc::c_char)
-                    .collect();
-            ptrs.push(ptr::null());
-
-            cb(ptrs.as_ptr() as *const c_void)
-        }
-        _ => cb(ptr::null())
-    }
-}
-
-fn translate_status(status: c_int) -> ProcessExit {
-    #![allow(non_snake_case)]
-    #[cfg(any(target_os = "linux", target_os = "android"))]
-    mod imp {
-        pub fn WIFEXITED(status: i32) -> bool { (status & 0xff) == 0 }
-        pub fn WEXITSTATUS(status: i32) -> i32 { (status >> 8) & 0xff }
-        pub fn WTERMSIG(status: i32) -> i32 { status & 0x7f }
-    }
-
-    #[cfg(any(target_os = "macos",
-              target_os = "ios",
-              target_os = "freebsd",
-              target_os = "dragonfly",
-              target_os = "bitrig",
-              target_os = "openbsd"))]
-    mod imp {
-        pub fn WIFEXITED(status: i32) -> bool { (status & 0x7f) == 0 }
-        pub fn WEXITSTATUS(status: i32) -> i32 { status >> 8 }
-        pub fn WTERMSIG(status: i32) -> i32 { status & 0o177 }
-    }
-
-    if imp::WIFEXITED(status) {
-        ExitStatus(imp::WEXITSTATUS(status) as isize)
-    } else {
-        ExitSignal(imp::WTERMSIG(status) as isize)
-    }
-}
diff --git a/src/libstd/sys/unix/process2.rs b/src/libstd/sys/unix/process2.rs
index 0b4e871454d..caa7b4eb29c 100644
--- a/src/libstd/sys/unix/process2.rs
+++ b/src/libstd/sys/unix/process2.rs
@@ -328,8 +328,8 @@ impl Process {
         }) {
             n if n == self.pid => Some(translate_status(status)),
             0 => None,
-            n => panic!("unknown waitpid error `{:?}`: {:?}", n,
-                       super::last_error()),
+            n => panic!("unknown waitpid error `{}`: {}", n,
+                       io::Error::last_os_error()),
         }
     }
 }
diff --git a/src/libstd/sys/unix/tcp.rs b/src/libstd/sys/unix/tcp.rs
deleted file mode 100644
index a9f2198208b..00000000000
--- a/src/libstd/sys/unix/tcp.rs
+++ /dev/null
@@ -1,164 +0,0 @@
-// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
-// file at the top-level directory of this distribution and at
-// http://rust-lang.org/COPYRIGHT.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-#![allow(deprecated)]
-
-use prelude::v1::*;
-
-use old_io::net::ip;
-use old_io::IoResult;
-use libc;
-use mem;
-use ptr;
-use super::{last_error, last_net_error, retry, sock_t};
-use sync::Arc;
-use sync::atomic::{AtomicBool, Ordering};
-use sys::fs::FileDesc;
-use sys::{set_nonblocking, wouldblock};
-use sys;
-use sys_common;
-use sys_common::net;
-use sys_common::net::SocketStatus::Readable;
-
-pub use sys_common::net::TcpStream;
-
-////////////////////////////////////////////////////////////////////////////////
-// TCP listeners
-////////////////////////////////////////////////////////////////////////////////
-
-pub struct TcpListener {
-    pub inner: FileDesc,
-}
-
-unsafe impl Sync for TcpListener {}
-
-impl TcpListener {
-    pub fn bind(addr: ip::SocketAddr) -> IoResult<TcpListener> {
-        let fd = try!(net::socket(addr, libc::SOCK_STREAM));
-        let ret = TcpListener { inner: FileDesc::new(fd, true) };
-
-        let mut storage = unsafe { mem::zeroed() };
-        let len = net::addr_to_sockaddr(addr, &mut storage);
-        let addrp = &storage as *const _ as *const libc::sockaddr;
-
-        // On platforms with Berkeley-derived sockets, this allows
-        // to quickly rebind a socket, without needing to wait for
-        // the OS to clean up the previous one.
-        try!(net::setsockopt(fd, libc::SOL_SOCKET,
-                             libc::SO_REUSEADDR,
-                             1 as libc::c_int));
-
-
-        match unsafe { libc::bind(fd, addrp, len) } {
-            -1 => Err(last_error()),
-            _ => Ok(ret),
-        }
-    }
-
-    pub fn fd(&self) -> sock_t { self.inner.fd() }
-
-    pub fn listen(self, backlog: isize) -> IoResult<TcpAcceptor> {
-        match unsafe { libc::listen(self.fd(), backlog as libc::c_int) } {
-            -1 => Err(last_net_error()),
-            _ => {
-                let (reader, writer) = try!(unsafe { sys::os::pipe() });
-                set_nonblocking(reader.fd(), true);
-                set_nonblocking(writer.fd(), true);
-                set_nonblocking(self.fd(), true);
-                Ok(TcpAcceptor {
-                    inner: Arc::new(AcceptorInner {
-                        listener: self,
-                        reader: reader,
-                        writer: writer,
-                        closed: AtomicBool::new(false),
-                    }),
-                    deadline: 0,
-                })
-            }
-        }
-    }
-
-    pub fn socket_name(&mut self) -> IoResult<ip::SocketAddr> {
-        net::sockname(self.fd(), libc::getsockname)
-    }
-}
-
-pub struct TcpAcceptor {
-    inner: Arc<AcceptorInner>,
-    deadline: u64,
-}
-
-struct AcceptorInner {
-    listener: TcpListener,
-    reader: FileDesc,
-    writer: FileDesc,
-    closed: AtomicBool,
-}
-
-unsafe impl Sync for AcceptorInner {}
-
-impl TcpAcceptor {
-    pub fn fd(&self) -> sock_t { self.inner.listener.fd() }
-
-    pub fn accept(&mut self) -> IoResult<TcpStream> {
-        // In implementing accept, the two main concerns are dealing with
-        // close_accept() and timeouts. The unix implementation is based on a
-        // nonblocking accept plus a call to select(). Windows ends up having
-        // an entirely separate implementation than unix, which is explained
-        // below.
-        //
-        // To implement timeouts, all blocking is done via select() instead of
-        // accept() by putting the socket in non-blocking mode. Because
-        // select() takes a timeout argument, we just pass through the timeout
-        // to select().
-        //
-        // To implement close_accept(), we have a self-pipe to ourselves which
-        // is passed to select() along with the socket being accepted on. The
-        // self-pipe is never written to unless close_accept() is called.
-        let deadline = if self.deadline == 0 {None} else {Some(self.deadline)};
-
-        while !self.inner.closed.load(Ordering::SeqCst) {
-            match retry(|| unsafe {
-                libc::accept(self.fd(), ptr::null_mut(), ptr::null_mut())
-            }) {
-                -1 if wouldblock() => {}
-                -1 => return Err(last_net_error()),
-                fd => return Ok(TcpStream::new(fd as sock_t)),
-            }
-            try!(net::await(&[self.fd(), self.inner.reader.fd()],
-                       deadline, Readable));
-        }
-
-        Err(sys_common::eof())
-    }
-
-    pub fn set_timeout(&mut self, timeout: Option<u64>) {
-        self.deadline = timeout.map(|a| sys::timer::now() + a).unwrap_or(0);
-    }
-
-    pub fn close_accept(&mut self) -> IoResult<()> {
-        self.inner.closed.store(true, Ordering::SeqCst);
-        let fd = FileDesc::new(self.inner.writer.fd(), false);
-        match fd.write(&[0]) {
-            Ok(..) => Ok(()),
-            Err(..) if wouldblock() => Ok(()),
-            Err(e) => Err(e),
-        }
-    }
-}
-
-impl Clone for TcpAcceptor {
-    fn clone(&self) -> TcpAcceptor {
-        TcpAcceptor {
-            inner: self.inner.clone(),
-            deadline: 0,
-        }
-    }
-}
diff --git a/src/libstd/sys/unix/timer.rs b/src/libstd/sys/unix/timer.rs
deleted file mode 100644
index 9309147b15c..00000000000
--- a/src/libstd/sys/unix/timer.rs
+++ /dev/null
@@ -1,294 +0,0 @@
-// Copyright 2013 The Rust Project Developers. See the COPYRIGHT
-// file at the top-level directory of this distribution and at
-// http://rust-lang.org/COPYRIGHT.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-//! Timers for non-Linux/non-Windows OSes
-//!
-//! This module implements timers with a worker thread, select(), and a lot of
-//! witchcraft that turns out to be horribly inaccurate timers. The unfortunate
-//! part is that I'm at a loss of what else to do one these OSes. This is also
-//! why Linux has a specialized timerfd implementation and windows has its own
-//! implementation (they're more accurate than this one).
-//!
-//! The basic idea is that there is a worker thread that's communicated to via a
-//! channel and a pipe, the pipe is used by the worker thread in a select()
-//! syscall with a timeout. The timeout is the "next timer timeout" while the
-//! channel is used to send data over to the worker thread.
-//!
-//! Whenever the call to select() times out, then a channel receives a message.
-//! Whenever the call returns that the file descriptor has information, then the
-//! channel from timers is drained, enqueuing all incoming requests.
-//!
-//! The actual implementation of the helper thread is a sorted array of
-//! timers in terms of target firing date. The target is the absolute time at
-//! which the timer should fire. Timers are then re-enqueued after a firing if
-//! the repeat boolean is set.
-//!
-//! Naturally, all this logic of adding times and keeping track of
-//! relative/absolute time is a little lossy and not quite exact. I've done the
-//! best I could to reduce the amount of calls to 'now()', but there's likely
-//! still inaccuracies trickling in here and there.
-//!
-//! One of the tricky parts of this implementation is that whenever a timer is
-//! acted upon, it must cancel whatever the previous action was (if one is
-//! active) in order to act like the other implementations of this timer. In
-//! order to do this, the timer's inner pointer is transferred to the worker
-//! thread. Whenever the timer is modified, it first takes ownership back from
-//! the worker thread in order to modify the same data structure. This has the
-//! side effect of "cancelling" the previous requests while allowing a
-//! re-enqueuing later on.
-//!
-//! Note that all time units in this file are in *milliseconds*.
-
-#![allow(deprecated)]
-
-use prelude::v1::*;
-use self::Req::*;
-
-use old_io::IoResult;
-use libc;
-use mem;
-use sys::os;
-use io;
-use ptr;
-use sync::atomic::{self, Ordering};
-use sync::mpsc::{channel, Sender, Receiver, TryRecvError};
-use sys::c;
-use sys::fs::FileDesc;
-use sys_common::helper_thread::Helper;
-
-helper_init! { static HELPER: Helper<Req> }
-
-pub trait Callback {
-    fn call(&mut self);
-}
-
-pub struct Timer {
-    id: usize,
-    inner: Option<Box<Inner>>,
-}
-
-pub struct Inner {
-    cb: Option<Box<Callback + Send>>,
-    interval: u64,
-    repeat: bool,
-    target: u64,
-    id: usize,
-}
-
-pub enum Req {
-    // Add a new timer to the helper thread.
-    NewTimer(Box<Inner>),
-
-    // Remove a timer based on its id and then send it back on the channel
-    // provided
-    RemoveTimer(usize, Sender<Box<Inner>>),
-}
-
-// returns the current time (in milliseconds)
-pub fn now() -> u64 {
-    unsafe {
-        let mut now: libc::timeval = mem::zeroed();
-        assert_eq!(c::gettimeofday(&mut now, ptr::null_mut()), 0);
-        return (now.tv_sec as u64) * 1000 + (now.tv_usec as u64) / 1000;
-    }
-}
-
-fn helper(input: libc::c_int, messages: Receiver<Req>, _: ()) {
-    let mut set: c::fd_set = unsafe { mem::zeroed() };
-
-    let fd = FileDesc::new(input, true);
-    let mut timeout: libc::timeval = unsafe { mem::zeroed() };
-
-    // active timers are those which are able to be selected upon (and it's a
-    // sorted list, and dead timers are those which have expired, but ownership
-    // hasn't yet been transferred back to the timer itself.
-    let mut active: Vec<Box<Inner>> = vec![];
-    let mut dead = vec![];
-
-    // inserts a timer into an array of timers (sorted by firing time)
-    fn insert(t: Box<Inner>, active: &mut Vec<Box<Inner>>) {
-        match active.iter().position(|tm| tm.target > t.target) {
-            Some(pos) => { active.insert(pos, t); }
-            None => { active.push(t); }
-        }
-    }
-
-    // signals the first requests in the queue, possible re-enqueueing it.
-    fn signal(active: &mut Vec<Box<Inner>>,
-              dead: &mut Vec<(usize, Box<Inner>)>) {
-        if active.is_empty() { return }
-
-        let mut timer = active.remove(0);
-        let mut cb = timer.cb.take().unwrap();
-        cb.call();
-        if timer.repeat {
-            timer.cb = Some(cb);
-            timer.target += timer.interval;
-            insert(timer, active);
-        } else {
-            dead.push((timer.id, timer));
-        }
-    }
-
-    'outer: loop {
-        let timeout = if active.len() == 0 {
-            // Empty array? no timeout (wait forever for the next request)
-            ptr::null_mut()
-        } else {
-            let now = now();
-            // If this request has already expired, then signal it and go
-            // through another iteration
-            if active[0].target <= now {
-                signal(&mut active, &mut dead);
-                continue;
-            }
-
-            // The actual timeout listed in the requests array is an
-            // absolute date, so here we translate the absolute time to a
-            // relative time.
-            let tm = active[0].target - now;
-            timeout.tv_sec = (tm / 1000) as libc::time_t;
-            timeout.tv_usec = ((tm % 1000) * 1000) as libc::suseconds_t;
-            &mut timeout as *mut libc::timeval
-        };
-
-        c::fd_set(&mut set, input);
-        match unsafe {
-            c::select(input + 1, &mut set, ptr::null_mut(),
-                      ptr::null_mut(), timeout)
-        } {
-            // timed out
-            0 => signal(&mut active, &mut dead),
-
-            // file descriptor write woke us up, we've got some new requests
-            1 => {
-                loop {
-                    match messages.try_recv() {
-                        // Once we've been disconnected it means the main thread
-                        // is exiting (at_exit has run). We could still have
-                        // active timers for other threads, so we're just going
-                        // to drop them all on the floor. This is all we can
-                        // really do, however, to prevent resource leakage. The
-                        // remaining timers will likely start panicking quickly
-                        // as they attempt to re-use this thread but are
-                        // disallowed to do so.
-                        Err(TryRecvError::Disconnected) => {
-                            break 'outer;
-                        }
-
-                        Ok(NewTimer(timer)) => insert(timer, &mut active),
-
-                        Ok(RemoveTimer(id, ack)) => {
-                            match dead.iter().position(|&(i, _)| id == i) {
-                                Some(i) => {
-                                    let (_, i) = dead.remove(i);
-                                    ack.send(i).unwrap();
-                                    continue
-                                }
-                                None => {}
-                            }
-                            let i = active.iter().position(|i| i.id == id);
-                            let i = i.expect("no timer found");
-                            let t = active.remove(i);
-                            ack.send(t).unwrap();
-                        }
-                        Err(..) => break
-                    }
-                }
-
-                // drain the file descriptor
-                let mut buf = [0];
-                assert_eq!(fd.read(&mut buf).unwrap(), 1);
-            }
-
-            -1 if os::errno() == libc::EINTR as i32 => {}
-            n => panic!("helper thread failed in select() with error: {} ({})",
-                       n, io::Error::last_os_error())
-        }
-    }
-}
-
-impl Timer {
-    pub fn new() -> IoResult<Timer> {
-        // See notes above regarding using isize return value
-        // instead of ()
-        HELPER.boot(|| {}, helper);
-
-        static ID: atomic::AtomicUsize = atomic::ATOMIC_USIZE_INIT;
-        let id = ID.fetch_add(1, Ordering::Relaxed);
-        Ok(Timer {
-            id: id,
-            inner: Some(box Inner {
-                cb: None,
-                interval: 0,
-                target: 0,
-                repeat: false,
-                id: id,
-            })
-        })
-    }
-
-    pub fn sleep(&mut self, ms: u64) {
-        let mut inner = self.inner();
-        inner.cb = None; // cancel any previous request
-        self.inner = Some(inner);
-
-        let mut to_sleep = libc::timespec {
-            tv_sec: (ms / 1000) as libc::time_t,
-            tv_nsec: ((ms % 1000) * 1000000) as libc::c_long,
-        };
-        while unsafe { libc::nanosleep(&to_sleep, &mut to_sleep) } != 0 {
-            if os::errno() as isize != libc::EINTR as isize {
-                panic!("failed to sleep, but not because of EINTR?");
-            }
-        }
-    }
-
-    pub fn oneshot(&mut self, msecs: u64, cb: Box<Callback + Send>) {
-        let now = now();
-        let mut inner = self.inner();
-
-        inner.repeat = false;
-        inner.cb = Some(cb);
-        inner.interval = msecs;
-        inner.target = now + msecs;
-
-        HELPER.send(NewTimer(inner));
-    }
-
-    pub fn period(&mut self, msecs: u64, cb: Box<Callback + Send>) {
-        let now = now();
-        let mut inner = self.inner();
-
-        inner.repeat = true;
-        inner.cb = Some(cb);
-        inner.interval = msecs;
-        inner.target = now + msecs;
-
-        HELPER.send(NewTimer(inner));
-    }
-
-    fn inner(&mut self) -> Box<Inner> {
-        match self.inner.take() {
-            Some(i) => i,
-            None => {
-                let (tx, rx) = channel();
-                HELPER.send(RemoveTimer(self.id, tx));
-                rx.recv().unwrap()
-            }
-        }
-    }
-}
-
-impl Drop for Timer {
-    fn drop(&mut self) {
-        self.inner = Some(self.inner());
-    }
-}
diff --git a/src/libstd/sys/unix/tty.rs b/src/libstd/sys/unix/tty.rs
deleted file mode 100644
index 2f6fd713bfb..00000000000
--- a/src/libstd/sys/unix/tty.rs
+++ /dev/null
@@ -1,81 +0,0 @@
-// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
-// file at the top-level directory of this distribution and at
-// http://rust-lang.org/COPYRIGHT.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-#![allow(deprecated)]
-
-use prelude::v1::*;
-
-use sys::fs::FileDesc;
-use libc::{self, c_int, c_ulong};
-use old_io::{self, IoResult, IoError};
-use sys::c;
-use sys_common;
-
-pub struct TTY {
-    pub fd: FileDesc,
-}
-
-#[cfg(any(target_os = "macos",
-          target_os = "ios",
-          target_os = "dragonfly",
-          target_os = "freebsd",
-          target_os = "bitrig",
-          target_os = "openbsd"))]
-const TIOCGWINSZ: c_ulong = 0x40087468;
-
-#[cfg(any(target_os = "linux", target_os = "android"))]
-const TIOCGWINSZ: c_ulong = 0x00005413;
-
-impl TTY {
-    pub fn new(fd: c_int) -> IoResult<TTY> {
-        if unsafe { libc::isatty(fd) } != 0 {
-            Ok(TTY { fd: FileDesc::new(fd, true) })
-        } else {
-            Err(IoError {
-                kind: old_io::MismatchedFileTypeForOperation,
-                desc: "file descriptor is not a TTY",
-                detail: None,
-            })
-        }
-    }
-
-    pub fn read(&mut self, buf: &mut [u8]) -> IoResult<usize> {
-        self.fd.read(buf)
-    }
-    pub fn write(&mut self, buf: &[u8]) -> IoResult<()> {
-        self.fd.write(buf)
-    }
-    pub fn set_raw(&mut self, _raw: bool) -> IoResult<()> {
-        Err(sys_common::unimpl())
-    }
-
-    pub fn get_winsize(&mut self) -> IoResult<(isize, isize)> {
-        unsafe {
-            #[repr(C)]
-            struct winsize {
-                ws_row: u16,
-                ws_col: u16,
-                ws_xpixel: u16,
-                ws_ypixel: u16
-            }
-
-            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: old_io::OtherIoError,
-                    desc: "Size of terminal could not be determined",
-                    detail: None,
-                })
-            } else {
-                Ok((size.ws_col as isize, size.ws_row as isize))
-            }
-        }
-    }
-}
diff --git a/src/libstd/sys/unix/udp.rs b/src/libstd/sys/unix/udp.rs
deleted file mode 100644
index 50f8fb828ad..00000000000
--- a/src/libstd/sys/unix/udp.rs
+++ /dev/null
@@ -1,11 +0,0 @@
-// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
-// file at the top-level directory of this distribution and at
-// http://rust-lang.org/COPYRIGHT.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-pub use sys_common::net::UdpSocket;
diff --git a/src/libstd/sys/windows/ext.rs b/src/libstd/sys/windows/ext.rs
index 5f6e74d4b72..ea95cc5bfd5 100644
--- a/src/libstd/sys/windows/ext.rs
+++ b/src/libstd/sys/windows/ext.rs
@@ -24,9 +24,6 @@ pub mod io {
     use sys_common::{net2, AsInner, FromInner};
     use sys;
 
-    #[allow(deprecated)]
-    use old_io;
-
     /// Raw HANDLEs.
     #[stable(feature = "rust1", since = "1.0.0")]
     pub type RawHandle = libc::HANDLE;
@@ -61,14 +58,6 @@ pub mod io {
         unsafe fn from_raw_handle(handle: RawHandle) -> Self;
     }
 
-    #[allow(deprecated)]
-    #[stable(feature = "rust1", since = "1.0.0")]
-    impl AsRawHandle for old_io::fs::File {
-        fn as_raw_handle(&self) -> RawHandle {
-            self.as_inner().handle()
-        }
-    }
-
     #[stable(feature = "rust1", since = "1.0.0")]
     impl AsRawHandle for fs::File {
         fn as_raw_handle(&self) -> RawHandle {
@@ -83,38 +72,6 @@ pub mod io {
         }
     }
 
-    #[allow(deprecated)]
-    #[stable(feature = "rust1", since = "1.0.0")]
-    impl AsRawHandle for old_io::pipe::PipeStream {
-        fn as_raw_handle(&self) -> RawHandle {
-            self.as_inner().handle()
-        }
-    }
-
-    #[allow(deprecated)]
-    #[stable(feature = "rust1", since = "1.0.0")]
-    impl AsRawHandle for old_io::net::pipe::UnixStream {
-        fn as_raw_handle(&self) -> RawHandle {
-            self.as_inner().handle()
-        }
-    }
-
-    #[allow(deprecated)]
-    #[stable(feature = "rust1", since = "1.0.0")]
-    impl AsRawHandle for old_io::net::pipe::UnixListener {
-        fn as_raw_handle(&self) -> RawHandle {
-            self.as_inner().handle()
-        }
-    }
-
-    #[allow(deprecated)]
-    #[stable(feature = "rust1", since = "1.0.0")]
-    impl AsRawHandle for old_io::net::pipe::UnixAcceptor {
-        fn as_raw_handle(&self) -> RawHandle {
-            self.as_inner().handle()
-        }
-    }
-
     /// Extract raw sockets.
     #[stable(feature = "rust1", since = "1.0.0")]
     pub trait AsRawSocket {
@@ -139,38 +96,6 @@ pub mod io {
         unsafe fn from_raw_socket(sock: RawSocket) -> Self;
     }
 
-    #[allow(deprecated)]
-    #[stable(feature = "rust1", since = "1.0.0")]
-    impl AsRawSocket for old_io::net::tcp::TcpStream {
-        fn as_raw_socket(&self) -> RawSocket {
-            self.as_inner().fd()
-        }
-    }
-
-    #[allow(deprecated)]
-    #[stable(feature = "rust1", since = "1.0.0")]
-    impl AsRawSocket for old_io::net::tcp::TcpListener {
-        fn as_raw_socket(&self) -> RawSocket {
-            self.as_inner().socket()
-        }
-    }
-
-    #[allow(deprecated)]
-    #[stable(feature = "rust1", since = "1.0.0")]
-    impl AsRawSocket for old_io::net::tcp::TcpAcceptor {
-        fn as_raw_socket(&self) -> RawSocket {
-            self.as_inner().socket()
-        }
-    }
-
-    #[allow(deprecated)]
-    #[stable(feature = "rust1", since = "1.0.0")]
-    impl AsRawSocket for old_io::net::udp::UdpSocket {
-        fn as_raw_socket(&self) -> RawSocket {
-            self.as_inner().fd()
-        }
-    }
-
     #[stable(feature = "rust1", since = "1.0.0")]
     impl AsRawSocket for net::TcpStream {
         fn as_raw_socket(&self) -> RawSocket {
diff --git a/src/libstd/sys/windows/fs.rs b/src/libstd/sys/windows/fs.rs
deleted file mode 100644
index 0bbb1a9e927..00000000000
--- a/src/libstd/sys/windows/fs.rs
+++ /dev/null
@@ -1,452 +0,0 @@
-// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
-// file at the top-level directory of this distribution and at
-// http://rust-lang.org/COPYRIGHT.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-//! Blocking Windows-based file I/O
-
-#![allow(deprecated)] // this module itself is essentially deprecated
-
-use libc::{self, c_int};
-
-use mem;
-use ptr;
-use old_io;
-
-use prelude::v1::*;
-use sys;
-use sys_common::{self, mkerr_libc};
-
-use old_path::{Path, GenericPath};
-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;
-
-pub struct FileDesc {
-    /// The underlying C file descriptor.
-    pub fd: fd_t,
-
-    /// Whether to close the file descriptor on drop.
-    close_on_drop: bool,
-}
-
-impl FileDesc {
-    pub fn new(fd: fd_t, close_on_drop: bool) -> FileDesc {
-        FileDesc { fd: fd, close_on_drop: close_on_drop }
-    }
-
-    pub fn read(&self, buf: &mut [u8]) -> IoResult<usize> {
-        let mut read = 0;
-        let ret = unsafe {
-            libc::ReadFile(self.handle(), buf.as_ptr() as libc::LPVOID,
-                           buf.len() as libc::DWORD, &mut read,
-                           ptr::null_mut())
-        };
-        if ret != 0 {
-            Ok(read as usize)
-        } else {
-            Err(super::last_error())
-        }
-    }
-
-    pub fn write(&self, buf: &[u8]) -> IoResult<()> {
-        let mut cur = buf.as_ptr();
-        let mut remaining = buf.len();
-        while remaining > 0 {
-            let mut amt = 0;
-            let ret = unsafe {
-                libc::WriteFile(self.handle(), cur as libc::LPVOID,
-                                remaining as libc::DWORD, &mut amt,
-                                ptr::null_mut())
-            };
-            if ret != 0 {
-                remaining -= amt as usize;
-                cur = unsafe { cur.offset(amt as isize) };
-            } else {
-                return Err(super::last_error())
-            }
-        }
-        Ok(())
-    }
-
-    pub fn fd(&self) -> fd_t { self.fd }
-
-    pub fn handle(&self) -> libc::HANDLE {
-        unsafe { libc::get_osfhandle(self.fd()) as libc::HANDLE }
-    }
-
-    // A version of seek that takes &self so that tell can call it
-    //   - the private seek should of course take &mut self.
-    fn seek_common(&self, pos: i64, style: SeekStyle) -> IoResult<u64> {
-        let whence = match style {
-            SeekSet => libc::FILE_BEGIN,
-            SeekEnd => libc::FILE_END,
-            SeekCur => libc::FILE_CURRENT,
-        };
-        unsafe {
-            let mut newpos = 0;
-            match libc::SetFilePointerEx(self.handle(), pos, &mut newpos, whence) {
-                0 => Err(super::last_error()),
-                _ => Ok(newpos as u64),
-            }
-        }
-    }
-
-    pub fn seek(&mut self, pos: i64, style: SeekStyle) -> IoResult<u64> {
-        self.seek_common(pos, style)
-    }
-
-    pub fn tell(&self) -> IoResult<u64> {
-        self.seek_common(0, SeekCur)
-    }
-
-    pub fn fsync(&mut self) -> IoResult<()> {
-        super::mkerr_winbool(unsafe {
-            libc::FlushFileBuffers(self.handle())
-        })
-    }
-
-    pub fn datasync(&mut self) -> IoResult<()> { return self.fsync(); }
-
-    pub fn truncate(&mut self, offset: i64) -> IoResult<()> {
-        let orig_pos = try!(self.tell());
-        let _ = try!(self.seek(offset, SeekSet));
-        let ret = unsafe {
-            match libc::SetEndOfFile(self.handle()) {
-                0 => Err(super::last_error()),
-                _ => Ok(())
-            }
-        };
-        let _ = self.seek(orig_pos as i64, SeekSet);
-        return ret;
-    }
-
-    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)),
-            _ => Err(super::last_error()),
-        }
-    }
-
-    #[allow(dead_code)]
-    pub fn unwrap(self) -> fd_t {
-        let fd = self.fd;
-        unsafe { mem::forget(self) };
-        fd
-    }
-}
-
-impl Drop for FileDesc {
-    fn drop(&mut self) {
-        // closing stdio file handles makes no sense, so never do it. Also, note
-        // that errors are ignored when closing a file descriptor. The reason
-        // for this is that if an error occurs we don't actually know if the
-        // file descriptor was closed or not, and if we retried (for something
-        // like EINTR), we might close another valid file descriptor (opened
-        // after we closed ours.
-        if self.close_on_drop && self.fd > libc::STDERR_FILENO {
-            let n = unsafe { libc::close(self.fd) };
-            if n != 0 {
-                println!("error {} when closing file descriptor {}", n, self.fd);
-            }
-        }
-    }
-}
-
-pub fn to_utf16(s: &Path) -> IoResult<Vec<u16>> {
-    sys::to_utf16(s.as_str())
-}
-
-pub fn open(path: &Path, fm: FileMode, fa: FileAccess) -> IoResult<FileDesc> {
-    // Flags passed to open_osfhandle
-    let flags = match fm {
-        Open => 0,
-        Append => libc::O_APPEND,
-        Truncate => libc::O_TRUNC,
-    };
-    let flags = match fa {
-        Read => flags | libc::O_RDONLY,
-        Write => flags | libc::O_WRONLY | libc::O_CREAT,
-        ReadWrite => flags | libc::O_RDWR | libc::O_CREAT,
-    };
-    let mut dwDesiredAccess = match fa {
-        Read => libc::FILE_GENERIC_READ,
-        Write => libc::FILE_GENERIC_WRITE,
-        ReadWrite => libc::FILE_GENERIC_READ | libc::FILE_GENERIC_WRITE
-    };
-
-    // libuv has a good comment about this, but the basic idea is what we try to
-    // emulate unix semantics by enabling all sharing by allowing things such as
-    // deleting a file while it's still open.
-    let dwShareMode = libc::FILE_SHARE_READ | libc::FILE_SHARE_WRITE |
-                      libc::FILE_SHARE_DELETE;
-
-    let dwCreationDisposition = match (fm, fa) {
-        (Truncate, Read) => libc::TRUNCATE_EXISTING,
-        (Truncate, _) => libc::CREATE_ALWAYS,
-        (Open, Read) => libc::OPEN_EXISTING,
-        (Open, _) => libc::OPEN_ALWAYS,
-        (Append, Read) => {
-            dwDesiredAccess |= libc::FILE_APPEND_DATA;
-            libc::OPEN_EXISTING
-        }
-        (Append, _) => {
-            dwDesiredAccess &= !libc::FILE_WRITE_DATA;
-            dwDesiredAccess |= libc::FILE_APPEND_DATA;
-            libc::OPEN_ALWAYS
-        }
-    };
-
-    let mut dwFlagsAndAttributes = libc::FILE_ATTRIBUTE_NORMAL;
-    // Compat with unix, this allows opening directories (see libuv)
-    dwFlagsAndAttributes |= libc::FILE_FLAG_BACKUP_SEMANTICS;
-
-    let path = try!(to_utf16(path));
-    let handle = unsafe {
-        libc::CreateFileW(path.as_ptr(),
-                          dwDesiredAccess,
-                          dwShareMode,
-                          ptr::null_mut(),
-                          dwCreationDisposition,
-                          dwFlagsAndAttributes,
-                          ptr::null_mut())
-    };
-    if handle == libc::INVALID_HANDLE_VALUE {
-        Err(super::last_error())
-    } else {
-        let fd = unsafe {
-            libc::open_osfhandle(handle as libc::intptr_t, flags)
-        };
-        if fd < 0 {
-            let _ = unsafe { libc::CloseHandle(handle) };
-            Err(super::last_error())
-        } else {
-            Ok(FileDesc::new(fd, true))
-        }
-    }
-}
-
-pub fn mkdir(p: &Path, _mode: usize) -> IoResult<()> {
-    let p = try!(to_utf16(p));
-    super::mkerr_winbool(unsafe {
-        // FIXME: turn mode into something useful? #2623
-        libc::CreateDirectoryW(p.as_ptr(), ptr::null_mut())
-    })
-}
-
-pub fn readdir(p: &Path) -> IoResult<Vec<Path>> {
-    fn prune(root: &Path, dirs: Vec<Path>) -> Vec<Path> {
-        dirs.into_iter().filter(|path| {
-            path.as_vec() != b"." && path.as_vec() != b".."
-        }).map(|path| root.join(path)).collect()
-    }
-
-    let star = p.join("*");
-    let path = try!(to_utf16(&star));
-
-    unsafe {
-        let mut wfd = mem::zeroed();
-        let find_handle = libc::FindFirstFileW(path.as_ptr(), &mut wfd);
-        if find_handle != libc::INVALID_HANDLE_VALUE {
-            let mut paths = vec![];
-            let mut more_files = 1 as libc::BOOL;
-            while more_files != 0 {
-                {
-                    let filename = super::truncate_utf16_at_nul(&wfd.cFileName);
-                    match String::from_utf16(filename) {
-                        Ok(filename) => paths.push(Path::new(filename)),
-                        Err(..) => {
-                            assert!(libc::FindClose(find_handle) != 0);
-                            return Err(IoError {
-                                kind: old_io::InvalidInput,
-                                desc: "path was not valid UTF-16",
-                                detail: Some(format!("path was not valid UTF-16: {:?}", filename)),
-                            })
-                        }, // FIXME #12056: Convert the UCS-2 to invalid utf-8 instead of erroring
-                    }
-                }
-                more_files = libc::FindNextFileW(find_handle, &mut wfd);
-            }
-            assert!(libc::FindClose(find_handle) != 0);
-            Ok(prune(p, paths))
-        } else {
-            Err(super::last_error())
-        }
-    }
-}
-
-pub fn unlink(p: &Path) -> IoResult<()> {
-    fn do_unlink(p_utf16: &Vec<u16>) -> IoResult<()> {
-        super::mkerr_winbool(unsafe { libc::DeleteFileW(p_utf16.as_ptr()) })
-    }
-
-    let p_utf16 = try!(to_utf16(p));
-    let res = do_unlink(&p_utf16);
-    match res {
-        Ok(()) => Ok(()),
-        Err(e) => {
-            // FIXME: change the code below to use more direct calls
-            // than `stat` and `chmod`, to avoid re-conversion to
-            // utf16 etc.
-
-            // On unix, a readonly file can be successfully removed. On windows,
-            // 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 == old_io::PermissionDenied {
-                let stat = match stat(p) {
-                    Ok(stat) => stat,
-                    Err(..) => return Err(e),
-                };
-                if stat.perm.intersects(old_io::USER_WRITE) { return Err(e) }
-
-                match chmod(p, (stat.perm | old_io::USER_WRITE).bits() as usize) {
-                    Ok(()) => do_unlink(&p_utf16),
-                    Err(..) => {
-                        // Try to put it back as we found it
-                        let _ = chmod(p, stat.perm.bits() as usize);
-                        Err(e)
-                    }
-                }
-            } else {
-                Err(e)
-            }
-        }
-    }
-}
-
-pub fn rename(old: &Path, new: &Path) -> IoResult<()> {
-    let old = try!(to_utf16(old));
-    let new = try!(to_utf16(new));
-    super::mkerr_winbool(unsafe {
-        libc::MoveFileExW(old.as_ptr(), new.as_ptr(), libc::MOVEFILE_REPLACE_EXISTING)
-    })
-}
-
-pub fn chmod(p: &Path, mode: usize) -> IoResult<()> {
-    let p = try!(to_utf16(p));
-    mkerr_libc(unsafe {
-        libc::wchmod(p.as_ptr(), mode as libc::c_int)
-    })
-}
-
-pub fn rmdir(p: &Path) -> IoResult<()> {
-    let p = try!(to_utf16(p));
-    super::mkerr_winbool(unsafe { libc::RemoveDirectoryW(p.as_ptr()) })
-}
-
-pub fn chown(_p: &Path, _uid: isize, _gid: isize) -> IoResult<()> {
-    // libuv has this as a no-op, so seems like this should as well?
-    Ok(())
-}
-
-pub fn readlink(p: &Path) -> IoResult<Path> {
-    // FIXME: I have a feeling that this reads intermediate symlinks as well.
-    use sys::c::compat::kernel32::GetFinalPathNameByHandleW;
-    let p = try!(to_utf16(p));
-    let handle = unsafe {
-        libc::CreateFileW(p.as_ptr(),
-                          libc::GENERIC_READ,
-                          libc::FILE_SHARE_READ,
-                          ptr::null_mut(),
-                          libc::OPEN_EXISTING,
-                          libc::FILE_ATTRIBUTE_NORMAL,
-                          ptr::null_mut())
-    };
-    if handle == libc::INVALID_HANDLE_VALUE {
-        return Err(super::last_error())
-    }
-    // Specify (sz - 1) because the documentation states that it's the size
-    // without the null pointer
-    let ret = super::fill_utf16_buf(|buf, sz| unsafe {
-        GetFinalPathNameByHandleW(handle,
-                                  buf as *const u16,
-                                  sz - 1,
-                                  libc::VOLUME_NAME_DOS)
-    }, |data| {
-        Path::new(String::from_utf16(data).unwrap())
-    });
-    assert!(unsafe { libc::CloseHandle(handle) } != 0);
-    return ret;
-}
-
-pub fn symlink(src: &Path, dst: &Path) -> IoResult<()> {
-    use sys::c::compat::kernel32::CreateSymbolicLinkW;
-    let src = try!(to_utf16(src));
-    let dst = try!(to_utf16(dst));
-    super::mkerr_winbool(unsafe {
-        CreateSymbolicLinkW(dst.as_ptr(), src.as_ptr(), 0) as libc::BOOL
-    })
-}
-
-pub fn link(src: &Path, dst: &Path) -> IoResult<()> {
-    let src = try!(to_utf16(src));
-    let dst = try!(to_utf16(dst));
-    super::mkerr_winbool(unsafe {
-        libc::CreateHardLinkW(dst.as_ptr(), src.as_ptr(), ptr::null_mut())
-    })
-}
-
-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 => 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,
-        modified: stat.st_mtime as u64,
-        accessed: stat.st_atime as u64,
-        unstable: UnstableFileStat {
-            device: stat.st_dev as u64,
-            inode: stat.st_ino as u64,
-            rdev: stat.st_rdev as u64,
-            nlink: stat.st_nlink as u64,
-            uid: stat.st_uid as u64,
-            gid: stat.st_gid as u64,
-            blksize:0,
-            blocks: 0,
-            flags: 0,
-            gen: 0,
-        },
-    }
-}
-
-pub fn stat(p: &Path) -> IoResult<FileStat> {
-    let mut stat: libc::stat = unsafe { mem::zeroed() };
-    let p = try!(to_utf16(p));
-    match unsafe { libc::wstat(p.as_ptr(), &mut stat) } {
-        0 => Ok(mkstat(&stat)),
-        _ => Err(super::last_error()),
-    }
-}
-
-// FIXME: move this to platform-specific modules (for now)?
-pub fn lstat(_p: &Path) -> IoResult<FileStat> {
-    // FIXME: implementation is missing
-    Err(sys_common::unimpl())
-}
-
-pub fn utime(p: &Path, atime: u64, mtime: u64) -> IoResult<()> {
-    let mut buf = libc::utimbuf {
-        actime: atime as libc::time64_t,
-        modtime: mtime as libc::time64_t,
-    };
-    let p = try!(to_utf16(p));
-    mkerr_libc(unsafe {
-        libc::wutime(p.as_ptr(), &mut buf)
-    })
-}
diff --git a/src/libstd/sys/windows/helper_signal.rs b/src/libstd/sys/windows/helper_signal.rs
deleted file mode 100644
index a9fb2c68227..00000000000
--- a/src/libstd/sys/windows/helper_signal.rs
+++ /dev/null
@@ -1,38 +0,0 @@
-// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
-// file at the top-level directory of this distribution and at
-// http://rust-lang.org/COPYRIGHT.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-use libc::{self, BOOL, LPCSTR, HANDLE, LPSECURITY_ATTRIBUTES, CloseHandle};
-use ptr;
-
-pub type signal = HANDLE;
-
-pub fn new() -> (HANDLE, HANDLE) {
-    unsafe {
-        let handle = CreateEventA(ptr::null_mut(), libc::FALSE, libc::FALSE,
-                                  ptr::null());
-        (handle, handle)
-    }
-}
-
-pub fn signal(handle: HANDLE) {
-    assert!(unsafe { SetEvent(handle) != 0 });
-}
-
-pub fn close(handle: HANDLE) {
-    assert!(unsafe { CloseHandle(handle) != 0 });
-}
-
-extern "system" {
-    fn CreateEventA(lpSecurityAttributes: LPSECURITY_ATTRIBUTES,
-                    bManualReset: BOOL,
-                    bInitialState: BOOL,
-                    lpName: LPCSTR) -> HANDLE;
-    fn SetEvent(hEvent: HANDLE) -> BOOL;
-}
diff --git a/src/libstd/sys/windows/mod.rs b/src/libstd/sys/windows/mod.rs
index e9d5fca531f..1171c6c068b 100644
--- a/src/libstd/sys/windows/mod.rs
+++ b/src/libstd/sys/windows/mod.rs
@@ -17,136 +17,31 @@ use prelude::v1::*;
 use ffi::{OsStr, OsString};
 use io::{self, ErrorKind};
 use libc;
-use mem;
 #[allow(deprecated)]
 use num::Int;
-use old_io::{self, IoResult, IoError};
 use os::windows::ffi::{OsStrExt, OsStringExt};
 use path::PathBuf;
-use sync::{Once, ONCE_INIT};
 
 pub mod backtrace;
 pub mod c;
 pub mod condvar;
 pub mod ext;
-pub mod fs;
 pub mod fs2;
 pub mod handle;
-pub mod helper_signal;
 pub mod mutex;
 pub mod net;
 pub mod os;
 pub mod os_str;
-pub mod pipe;
 pub mod pipe2;
-pub mod process;
 pub mod process2;
 pub mod rwlock;
 pub mod stack_overflow;
 pub mod sync;
-pub mod tcp;
 pub mod thread;
 pub mod thread_local;
 pub mod time;
-pub mod timer;
-pub mod tty;
-pub mod udp;
 pub mod stdio;
 
-pub mod addrinfo {
-    pub use sys_common::net::get_host_addresses;
-    pub use sys_common::net::get_address_name;
-}
-
-// FIXME: move these to c module
-pub type sock_t = libc::SOCKET;
-pub type wrlen = libc::c_int;
-pub type msglen_t = libc::c_int;
-pub unsafe fn close_sock(sock: sock_t) { let _ = libc::closesocket(sock); }
-
-// windows has zero values as errors
-#[allow(deprecated)]
-fn mkerr_winbool(ret: libc::c_int) -> IoResult<()> {
-    if ret == 0 {
-        Err(last_error())
-    } else {
-        Ok(())
-    }
-}
-
-#[allow(deprecated)]
-pub fn last_error() -> IoError {
-    let errno = os::errno() as i32;
-    let mut err = decode_error(errno);
-    err.detail = Some(os::error_string(errno));
-    err
-}
-
-#[allow(deprecated)]
-pub fn last_net_error() -> IoError {
-    let errno = unsafe { c::WSAGetLastError() as i32 };
-    let mut err = decode_error(errno);
-    err.detail = Some(os::error_string(errno));
-    err
-}
-
-#[allow(deprecated)]
-pub fn last_gai_error(_errno: i32) -> IoError {
-    last_net_error()
-}
-
-/// Convert an `errno` value into a high-level error variant and description.
-#[allow(deprecated)]
-pub fn decode_error(errno: i32) -> IoError {
-    let (kind, desc) = match errno {
-        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 =>
-            (old_io::PermissionDenied, "permission denied"),
-        libc::WSAEWOULDBLOCK => {
-            (old_io::ResourceUnavailable, "resource temporarily unavailable")
-        }
-        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 =>
-            (old_io::TimedOut, "operation timed out"),
-        libc::WSAEINVAL => (old_io::InvalidInput, "invalid argument"),
-        libc::ERROR_CALL_NOT_IMPLEMENTED =>
-            (old_io::IoUnavailable, "function not implemented"),
-        libc::ERROR_INVALID_HANDLE =>
-            (old_io::MismatchedFileTypeForOperation,
-             "invalid handle provided to function"),
-        libc::ERROR_NOTHING_TO_TERMINATE =>
-            (old_io::InvalidInput, "no process to kill"),
-        libc::ERROR_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 => (old_io::InvalidInput,
-                                         "illegal operation on a directory"),
-
-        _ => (old_io::OtherIoError, "unknown error")
-    };
-    IoError { kind: kind, desc: desc, detail: None }
-}
-
-#[allow(deprecated)]
-pub fn decode_error_detailed(errno: i32) -> IoError {
-    let mut err = decode_error(errno);
-    err.detail = Some(os::error_string(errno));
-    err
-}
-
 pub fn decode_error_kind(errno: i32) -> ErrorKind {
     match errno as libc::c_int {
         libc::ERROR_ACCESS_DENIED => ErrorKind::PermissionDenied,
@@ -170,58 +65,6 @@ pub fn decode_error_kind(errno: i32) -> ErrorKind {
     }
 }
 
-
-#[inline]
-pub fn retry<I, F>(f: F) -> I where F: FnOnce() -> I { f() } // PR rust-lang/rust/#17020
-
-pub fn ms_to_timeval(ms: u64) -> libc::timeval {
-    libc::timeval {
-        tv_sec: (ms / 1000) as libc::c_long,
-        tv_usec: ((ms % 1000) * 1000) as libc::c_long,
-    }
-}
-
-#[allow(deprecated)]
-pub fn wouldblock() -> bool {
-    let err = os::errno();
-    err == libc::WSAEWOULDBLOCK as i32
-}
-
-#[allow(deprecated)]
-pub fn set_nonblocking(fd: sock_t, nb: bool) {
-    let mut set = nb as libc::c_ulong;
-    if unsafe { c::ioctlsocket(fd, c::FIONBIO, &mut set) } != 0 {
-        // The above function should not return an error unless we passed it
-        // invalid parameters. Panic on errors.
-        panic!("set_nonblocking called with invalid parameters: {}", last_error());
-    }
-}
-
-pub fn init_net() {
-    unsafe {
-        static START: Once = ONCE_INIT;
-
-        START.call_once(|| {
-            let mut data: c::WSADATA = mem::zeroed();
-            let ret = c::WSAStartup(0x202, // version 2.2
-                                    &mut data);
-            assert_eq!(ret, 0);
-        });
-    }
-}
-
-#[allow(deprecated)]
-pub fn to_utf16(s: Option<&str>) -> IoResult<Vec<u16>> {
-    match s {
-        Some(s) => Ok(to_utf16_os(OsStr::from_str(s))),
-        None => Err(IoError {
-            kind: old_io::InvalidInput,
-            desc: "valid unicode input required",
-            detail: None,
-        }),
-    }
-}
-
 fn to_utf16_os(s: &OsStr) -> Vec<u16> {
     let mut v: Vec<_> = s.encode_wide().collect();
     v.push(0);
@@ -242,7 +85,7 @@ fn to_utf16_os(s: &OsStr) -> Vec<u16> {
 // Once the syscall has completed (errors bail out early) the second closure is
 // yielded the data which has been read from the syscall. The return value
 // from this closure is then the return value of the function.
-fn fill_utf16_buf_base<F1, F2, T>(mut f1: F1, f2: F2) -> Result<T, ()>
+fn fill_utf16_buf<F1, F2, T>(mut f1: F1, f2: F2) -> io::Result<T>
     where F1: FnMut(*mut u16, libc::DWORD) -> libc::DWORD,
           F2: FnOnce(&[u16]) -> T
 {
@@ -274,7 +117,7 @@ fn fill_utf16_buf_base<F1, F2, T>(mut f1: F1, f2: F2) -> Result<T, ()>
             c::SetLastError(0);
             let k = match f1(buf.as_mut_ptr(), n as libc::DWORD) {
                 0 if libc::GetLastError() == 0 => 0,
-                0 => return Err(()),
+                0 => return Err(io::Error::last_os_error()),
                 n => n,
             } as usize;
             if k == n && libc::GetLastError() ==
@@ -289,21 +132,6 @@ fn fill_utf16_buf_base<F1, F2, T>(mut f1: F1, f2: F2) -> Result<T, ()>
     }
 }
 
-#[allow(deprecated)]
-fn fill_utf16_buf<F1, F2, T>(f1: F1, f2: F2) -> IoResult<T>
-    where F1: FnMut(*mut u16, libc::DWORD) -> libc::DWORD,
-          F2: FnOnce(&[u16]) -> T
-{
-    fill_utf16_buf_base(f1, f2).map_err(|()| IoError::last_error())
-}
-
-fn fill_utf16_buf_new<F1, F2, T>(f1: F1, f2: F2) -> io::Result<T>
-    where F1: FnMut(*mut u16, libc::DWORD) -> libc::DWORD,
-          F2: FnOnce(&[u16]) -> T
-{
-    fill_utf16_buf_base(f1, f2).map_err(|()| io::Error::last_os_error())
-}
-
 fn os2path(s: &[u16]) -> PathBuf {
     PathBuf::from(OsString::from_wide(s))
 }
diff --git a/src/libstd/sys/windows/os.rs b/src/libstd/sys/windows/os.rs
index d5843a2f998..ebf5532b0ca 100644
--- a/src/libstd/sys/windows/os.rs
+++ b/src/libstd/sys/windows/os.rs
@@ -22,15 +22,12 @@ use io;
 use libc::types::os::arch::extra::LPWCH;
 use libc::{self, c_int, c_void};
 use mem;
-#[allow(deprecated)]
-use old_io::{IoError, IoResult};
 use ops::Range;
 use os::windows::ffi::EncodeWide;
 use path::{self, PathBuf};
 use ptr;
 use slice;
 use sys::c;
-use sys::fs::FileDesc;
 use sys::handle::Handle;
 
 use libc::funcs::extra::kernel32::{
@@ -233,13 +230,13 @@ impl StdError for JoinPathsError {
 }
 
 pub fn current_exe() -> io::Result<PathBuf> {
-    super::fill_utf16_buf_new(|buf, sz| unsafe {
+    super::fill_utf16_buf(|buf, sz| unsafe {
         libc::GetModuleFileNameW(ptr::null_mut(), buf, sz)
     }, super::os2path)
 }
 
 pub fn getcwd() -> io::Result<PathBuf> {
-    super::fill_utf16_buf_new(|buf, sz| unsafe {
+    super::fill_utf16_buf(|buf, sz| unsafe {
         libc::GetCurrentDirectoryW(sz, buf)
     }, super::os2path)
 }
@@ -259,7 +256,7 @@ pub fn chdir(p: &path::Path) -> io::Result<()> {
 
 pub fn getenv(k: &OsStr) -> Option<OsString> {
     let k = super::to_utf16_os(k);
-    super::fill_utf16_buf_new(|buf, sz| unsafe {
+    super::fill_utf16_buf(|buf, sz| unsafe {
         libc::GetEnvironmentVariableW(k.as_ptr(), buf, sz)
     }, |buf| {
         OsStringExt::from_wide(buf)
@@ -336,27 +333,8 @@ pub fn page_size() -> usize {
     }
 }
 
-#[allow(deprecated)]
-pub unsafe fn pipe() -> IoResult<(FileDesc, FileDesc)> {
-    // Windows pipes work subtly differently than unix pipes, and their
-    // inheritance has to be handled in a different way that I do not
-    // fully understand. Here we explicitly make the pipe non-inheritable,
-    // which means to pass it to a subprocess they need to be duplicated
-    // first, as in std::run.
-    let mut fds = [0; 2];
-    match libc::pipe(fds.as_mut_ptr(), 1024 as ::libc::c_uint,
-    (libc::O_BINARY | libc::O_NOINHERIT) as c_int) {
-        0 => {
-            assert!(fds[0] != -1 && fds[0] != 0);
-            assert!(fds[1] != -1 && fds[1] != 0);
-            Ok((FileDesc::new(fds[0], true), FileDesc::new(fds[1], true)))
-        }
-        _ => Err(IoError::last_error()),
-    }
-}
-
 pub fn temp_dir() -> PathBuf {
-    super::fill_utf16_buf_new(|buf, sz| unsafe {
+    super::fill_utf16_buf(|buf, sz| unsafe {
         c::GetTempPathW(sz, buf)
     }, super::os2path).unwrap()
 }
@@ -371,7 +349,7 @@ pub fn home_dir() -> Option<PathBuf> {
             return None
         }
         let _handle = Handle::new(token);
-        super::fill_utf16_buf_new(|buf, mut sz| {
+        super::fill_utf16_buf(|buf, mut sz| {
             match c::GetUserProfileDirectoryW(token, buf, &mut sz) {
                 0 if libc::GetLastError() != 0 => 0,
                 0 => sz,
diff --git a/src/libstd/sys/windows/pipe.rs b/src/libstd/sys/windows/pipe.rs
deleted file mode 100644
index 064c003bd15..00000000000
--- a/src/libstd/sys/windows/pipe.rs
+++ /dev/null
@@ -1,775 +0,0 @@
-// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
-// file at the top-level directory of this distribution and at
-// http://rust-lang.org/COPYRIGHT.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-//! Named pipes implementation for windows
-//!
-//! If are unfortunate enough to be reading this code, I would like to first
-//! apologize. This was my first encounter with windows named pipes, and it
-//! didn't exactly turn out very cleanly. If you, too, are new to named pipes,
-//! read on as I'll try to explain some fun things that I ran into.
-//!
-//! # Unix pipes vs Named pipes
-//!
-//! As with everything else, named pipes on windows are pretty different from
-//! unix pipes on unix. On unix, you use one "server pipe" to accept new client
-//! pipes. So long as this server pipe is active, new children pipes can
-//! connect. On windows, you instead have a number of "server pipes", and each
-//! of these server pipes can throughout their lifetime be attached to a client
-//! or not. Once attached to a client, a server pipe may then disconnect at a
-//! later date.
-//!
-//! # Accepting clients
-//!
-//! As with most other I/O interfaces, our Listener/Acceptor/Stream interfaces
-//! are built around the unix flavors. This means that we have one "server
-//! pipe" to which many clients can connect. In order to make this compatible
-//! with the windows model, each connected client consumes ownership of a server
-//! pipe, and then a new server pipe is created for the next client.
-//!
-//! Note that the server pipes attached to clients are never given back to the
-//! listener for recycling. This could possibly be implemented with a channel so
-//! the listener half can re-use server pipes, but for now I err'd on the simple
-//! side of things. Each stream accepted by a listener will destroy the server
-//! pipe after the stream is dropped.
-//!
-//! This model ends up having a small race or two, and you can find more details
-//! on the `native_accept` method.
-//!
-//! # Simultaneous reads and writes
-//!
-//! In testing, I found that two simultaneous writes and two simultaneous reads
-//! on a pipe ended up working out just fine, but problems were encountered when
-//! a read was executed simultaneously with a write. After some googling around,
-//! it sounded like named pipes just weren't built for this kind of interaction,
-//! and the suggested solution was to use overlapped I/O.
-//!
-//! I don't really know what overlapped I/O is, but my basic understanding after
-//! reading about it is that you have an external Event which is used to signal
-//! I/O completion, passed around in some OVERLAPPED structures. As to what this
-//! is, I'm not exactly sure.
-//!
-//! This problem implies that all named pipes are created with the
-//! FILE_FLAG_OVERLAPPED option. This means that all of their I/O is
-//! asynchronous. Each I/O operation has an associated OVERLAPPED structure, and
-//! inside of this structure is a HANDLE from CreateEvent. After the I/O is
-//! determined to be pending (may complete in the future), the
-//! GetOverlappedResult function is used to block on the event, waiting for the
-//! I/O to finish.
-//!
-//! This scheme ended up working well enough. There were two snags that I ran
-//! into, however:
-//!
-//! * Each UnixStream instance needs its own read/write events to wait on. These
-//!   can't be shared among clones of the same stream because the documentation
-//!   states that it unsets the event when the I/O is started (would possibly
-//!   corrupt other events simultaneously waiting). For convenience's sake,
-//!   these events are lazily initialized.
-//!
-//! * Each server pipe needs to be created with FILE_FLAG_OVERLAPPED in addition
-//!   to all pipes created through `connect`. Notably this means that the
-//!   ConnectNamedPipe function is nonblocking, implying that the Listener needs
-//!   to have yet another event to do the actual blocking.
-//!
-//! # Conclusion
-//!
-//! The conclusion here is that I probably don't know the best way to work with
-//! windows named pipes, but the solution here seems to work well enough to get
-//! the test suite passing (the suite is in libstd), and that's good enough for
-//! me!
-
-#![allow(deprecated)]
-
-use prelude::v1::*;
-
-use libc;
-use ffi::CString;
-use old_io::{self, IoError, IoResult};
-use mem;
-use ptr;
-use str;
-use sync::atomic::{AtomicBool, Ordering};
-use sync::{Arc, Mutex};
-
-use sys_common::{self, eof};
-
-use super::{c, os, timer, decode_error_detailed};
-
-fn to_utf16(c: &CString) -> IoResult<Vec<u16>> {
-    super::to_utf16(str::from_utf8(c.as_bytes()).ok())
-}
-
-struct Event(libc::HANDLE);
-
-impl Event {
-    fn new(manual_reset: bool, initial_state: bool) -> IoResult<Event> {
-        let event = unsafe {
-            libc::CreateEventW(ptr::null_mut(),
-                               manual_reset as libc::BOOL,
-                               initial_state as libc::BOOL,
-                               ptr::null())
-        };
-        if event as usize == 0 {
-            Err(super::last_error())
-        } else {
-            Ok(Event(event))
-        }
-    }
-
-    fn handle(&self) -> libc::HANDLE { let Event(handle) = *self; handle }
-}
-
-impl Drop for Event {
-    fn drop(&mut self) {
-        unsafe { let _ = libc::CloseHandle(self.handle()); }
-    }
-}
-
-unsafe impl Send for Event {}
-unsafe impl Sync for Event {}
-
-struct Inner {
-    handle: libc::HANDLE,
-    lock: Mutex<()>,
-    read_closed: AtomicBool,
-    write_closed: AtomicBool,
-}
-
-impl Inner {
-    fn new(handle: libc::HANDLE) -> Inner {
-        Inner {
-            handle: handle,
-            lock: Mutex::new(()),
-            read_closed: AtomicBool::new(false),
-            write_closed: AtomicBool::new(false),
-        }
-    }
-}
-
-impl Drop for Inner {
-    fn drop(&mut self) {
-        unsafe {
-            let _ = libc::FlushFileBuffers(self.handle);
-            let _ = libc::CloseHandle(self.handle);
-        }
-    }
-}
-
-unsafe impl Send for Inner {}
-unsafe impl Sync for Inner {}
-
-unsafe fn pipe(name: *const u16, init: bool) -> libc::HANDLE {
-    libc::CreateNamedPipeW(
-        name,
-        libc::PIPE_ACCESS_DUPLEX |
-            if init {libc::FILE_FLAG_FIRST_PIPE_INSTANCE} else {0} |
-            libc::FILE_FLAG_OVERLAPPED,
-        libc::PIPE_TYPE_BYTE | libc::PIPE_READMODE_BYTE |
-            libc::PIPE_WAIT,
-        libc::PIPE_UNLIMITED_INSTANCES,
-        65536,
-        65536,
-        0,
-        ptr::null_mut()
-    )
-}
-
-pub fn await(handle: libc::HANDLE, deadline: u64,
-             events: &[libc::HANDLE]) -> IoResult<usize> {
-    use libc::consts::os::extra::{WAIT_FAILED, WAIT_TIMEOUT, WAIT_OBJECT_0};
-
-    // If we've got a timeout, use WaitForSingleObject in tandem with CancelIo
-    // to figure out if we should indeed get the result.
-    let ms = if deadline == 0 {
-        libc::INFINITE as u64
-    } else {
-        let now = timer::now();
-        if deadline < now {0} else {deadline - now}
-    };
-    let ret = unsafe {
-        c::WaitForMultipleObjects(events.len() as libc::DWORD,
-                                  events.as_ptr(),
-                                  libc::FALSE,
-                                  ms as libc::DWORD)
-    };
-    match ret {
-        WAIT_FAILED => Err(super::last_error()),
-        WAIT_TIMEOUT => unsafe {
-            let _ = c::CancelIo(handle);
-            Err(sys_common::timeout("operation timed out"))
-        },
-        n => Ok((n - WAIT_OBJECT_0) as usize)
-    }
-}
-
-fn epipe() -> IoError {
-    IoError {
-        kind: old_io::EndOfFile,
-        desc: "the pipe has ended",
-        detail: None,
-    }
-}
-
-////////////////////////////////////////////////////////////////////////////////
-// Unix Streams
-////////////////////////////////////////////////////////////////////////////////
-
-pub struct UnixStream {
-    inner: Arc<Inner>,
-    write: Option<Event>,
-    read: Option<Event>,
-    read_deadline: u64,
-    write_deadline: u64,
-}
-
-impl UnixStream {
-    fn try_connect(p: *const u16) -> Option<libc::HANDLE> {
-        // Note that most of this is lifted from the libuv implementation.
-        // The idea is that if we fail to open a pipe in read/write mode
-        // that we try afterwards in just read or just write
-        let mut result = unsafe {
-            libc::CreateFileW(p,
-                libc::GENERIC_READ | libc::GENERIC_WRITE,
-                0,
-                ptr::null_mut(),
-                libc::OPEN_EXISTING,
-                libc::FILE_FLAG_OVERLAPPED,
-                ptr::null_mut())
-        };
-        if result != libc::INVALID_HANDLE_VALUE {
-            return Some(result)
-        }
-
-        let err = unsafe { libc::GetLastError() };
-        if err == libc::ERROR_ACCESS_DENIED as libc::DWORD {
-            result = unsafe {
-                libc::CreateFileW(p,
-                    libc::GENERIC_READ | libc::FILE_WRITE_ATTRIBUTES,
-                    0,
-                    ptr::null_mut(),
-                    libc::OPEN_EXISTING,
-                    libc::FILE_FLAG_OVERLAPPED,
-                    ptr::null_mut())
-            };
-            if result != libc::INVALID_HANDLE_VALUE {
-                return Some(result)
-            }
-        }
-        let err = unsafe { libc::GetLastError() };
-        if err == libc::ERROR_ACCESS_DENIED as libc::DWORD {
-            result = unsafe {
-                libc::CreateFileW(p,
-                    libc::GENERIC_WRITE | libc::FILE_READ_ATTRIBUTES,
-                    0,
-                    ptr::null_mut(),
-                    libc::OPEN_EXISTING,
-                    libc::FILE_FLAG_OVERLAPPED,
-                    ptr::null_mut())
-            };
-            if result != libc::INVALID_HANDLE_VALUE {
-                return Some(result)
-            }
-        }
-        None
-    }
-
-    pub fn connect(addr: &CString, timeout: Option<u64>) -> IoResult<UnixStream> {
-        let addr = try!(to_utf16(addr));
-        let start = timer::now();
-        loop {
-            match UnixStream::try_connect(addr.as_ptr()) {
-                Some(handle) => {
-                    let inner = Inner::new(handle);
-                    let mut mode = libc::PIPE_TYPE_BYTE |
-                                   libc::PIPE_READMODE_BYTE |
-                                   libc::PIPE_WAIT;
-                    let ret = unsafe {
-                        libc::SetNamedPipeHandleState(inner.handle,
-                                                      &mut mode,
-                                                      ptr::null_mut(),
-                                                      ptr::null_mut())
-                    };
-                    return if ret == 0 {
-                        Err(super::last_error())
-                    } else {
-                        Ok(UnixStream {
-                            inner: Arc::new(inner),
-                            read: None,
-                            write: None,
-                            read_deadline: 0,
-                            write_deadline: 0,
-                        })
-                    }
-                }
-                None => {}
-            }
-
-            // On windows, if you fail to connect, you may need to call the
-            // `WaitNamedPipe` function, and this is indicated with an error
-            // code of ERROR_PIPE_BUSY.
-            let code = unsafe { libc::GetLastError() };
-            if code as isize != libc::ERROR_PIPE_BUSY as isize {
-                return Err(super::last_error())
-            }
-
-            match timeout {
-                Some(timeout) => {
-                    let now = timer::now();
-                    let timed_out = (now - start) >= timeout || unsafe {
-                        let ms = (timeout - (now - start)) as libc::DWORD;
-                        libc::WaitNamedPipeW(addr.as_ptr(), ms) == 0
-                    };
-                    if timed_out {
-                        return Err(sys_common::timeout("connect timed out"))
-                    }
-                }
-
-                // An example I found on Microsoft's website used 20
-                // seconds, libuv uses 30 seconds, hence we make the
-                // obvious choice of waiting for 25 seconds.
-                None => {
-                    if unsafe { libc::WaitNamedPipeW(addr.as_ptr(), 25000) } == 0 {
-                        return Err(super::last_error())
-                    }
-                }
-            }
-        }
-    }
-
-    pub fn handle(&self) -> libc::HANDLE { self.inner.handle }
-
-    fn read_closed(&self) -> bool {
-        self.inner.read_closed.load(Ordering::SeqCst)
-    }
-
-    fn write_closed(&self) -> bool {
-        self.inner.write_closed.load(Ordering::SeqCst)
-    }
-
-    fn cancel_io(&self) -> IoResult<()> {
-        match unsafe { c::CancelIoEx(self.handle(), ptr::null_mut()) } {
-            0 if os::errno() == libc::ERROR_NOT_FOUND as i32 => {
-                Ok(())
-            }
-            0 => Err(super::last_error()),
-            _ => Ok(())
-        }
-    }
-
-    pub fn read(&mut self, buf: &mut [u8]) -> IoResult<usize> {
-        if self.read.is_none() {
-            self.read = Some(try!(Event::new(true, false)));
-        }
-
-        let mut bytes_read = 0;
-        let mut overlapped: libc::OVERLAPPED = unsafe { mem::zeroed() };
-        overlapped.hEvent = self.read.as_ref().unwrap().handle();
-
-        // Pre-flight check to see if the reading half has been closed. This
-        // must be done before issuing the ReadFile request, but after we
-        // acquire the lock.
-        //
-        // See comments in close_read() about why this lock is necessary.
-        let guard = self.inner.lock.lock();
-        if self.read_closed() {
-            return Err(eof())
-        }
-
-        // Issue a nonblocking requests, succeeding quickly if it happened to
-        // succeed.
-        let ret = unsafe {
-            libc::ReadFile(self.handle(),
-                           buf.as_ptr() as libc::LPVOID,
-                           buf.len() as libc::DWORD,
-                           &mut bytes_read,
-                           &mut overlapped)
-        };
-        if ret != 0 { return Ok(bytes_read as usize) }
-
-        // If our errno doesn't say that the I/O is pending, then we hit some
-        // legitimate error and return immediately.
-        if os::errno() != libc::ERROR_IO_PENDING as i32 {
-            return Err(super::last_error())
-        }
-
-        // Now that we've issued a successful nonblocking request, we need to
-        // wait for it to finish. This can all be done outside the lock because
-        // we'll see any invocation of CancelIoEx. We also call this in a loop
-        // because we're woken up if the writing half is closed, we just need to
-        // realize that the reading half wasn't closed and we go right back to
-        // sleep.
-        drop(guard);
-        loop {
-            // Process a timeout if one is pending
-            let wait_succeeded = await(self.handle(), self.read_deadline,
-                                       &[overlapped.hEvent]);
-
-            let ret = unsafe {
-                libc::GetOverlappedResult(self.handle(),
-                                          &mut overlapped,
-                                          &mut bytes_read,
-                                          libc::TRUE)
-            };
-            // If we succeeded, or we failed for some reason other than
-            // CancelIoEx, return immediately
-            if ret != 0 { return Ok(bytes_read as usize) }
-            if os::errno() != libc::ERROR_OPERATION_ABORTED as i32 {
-                return Err(super::last_error())
-            }
-
-            // If the reading half is now closed, then we're done. If we woke up
-            // because the writing half was closed, keep trying.
-            if wait_succeeded.is_err() {
-                return Err(sys_common::timeout("read timed out"))
-            }
-            if self.read_closed() {
-                return Err(eof())
-            }
-        }
-    }
-
-    pub fn write(&mut self, buf: &[u8]) -> IoResult<()> {
-        if self.write.is_none() {
-            self.write = Some(try!(Event::new(true, false)));
-        }
-
-        let mut offset = 0;
-        let mut overlapped: libc::OVERLAPPED = unsafe { mem::zeroed() };
-        overlapped.hEvent = self.write.as_ref().unwrap().handle();
-
-        while offset < buf.len() {
-            let mut bytes_written = 0;
-
-            // This sequence below is quite similar to the one found in read().
-            // Some careful looping is done to ensure that if close_write() is
-            // invoked we bail out early, and if close_read() is invoked we keep
-            // going after we woke up.
-            //
-            // See comments in close_read() about why this lock is necessary.
-            let guard = self.inner.lock.lock();
-            if self.write_closed() {
-                return Err(epipe())
-            }
-            let ret = unsafe {
-                libc::WriteFile(self.handle(),
-                                buf[offset..].as_ptr() as libc::LPVOID,
-                                (buf.len() - offset) as libc::DWORD,
-                                &mut bytes_written,
-                                &mut overlapped)
-            };
-            let err = os::errno();
-            drop(guard);
-
-            if ret == 0 {
-                if err != libc::ERROR_IO_PENDING as i32 {
-                    return Err(decode_error_detailed(err as i32))
-                }
-                // Process a timeout if one is pending
-                let wait_succeeded = await(self.handle(), self.write_deadline,
-                                           &[overlapped.hEvent]);
-                let ret = unsafe {
-                    libc::GetOverlappedResult(self.handle(),
-                                              &mut overlapped,
-                                              &mut bytes_written,
-                                              libc::TRUE)
-                };
-                // If we weren't aborted, this was a legit error, if we were
-                // aborted, then check to see if the write half was actually
-                // closed or whether we woke up from the read half closing.
-                if ret == 0 {
-                    if os::errno() != libc::ERROR_OPERATION_ABORTED as i32 {
-                        return Err(super::last_error())
-                    }
-                    if !wait_succeeded.is_ok() {
-                        let amt = offset + bytes_written as usize;
-                        return if amt > 0 {
-                            Err(IoError {
-                                kind: old_io::ShortWrite(amt),
-                                desc: "short write during write",
-                                detail: None,
-                            })
-                        } else {
-                            Err(sys_common::timeout("write timed out"))
-                        }
-                    }
-                    if self.write_closed() {
-                        return Err(epipe())
-                    }
-                    continue // retry
-                }
-            }
-            offset += bytes_written as usize;
-        }
-        Ok(())
-    }
-
-    pub fn close_read(&mut self) -> IoResult<()> {
-        // On windows, there's no actual shutdown() method for pipes, so we're
-        // forced to emulate the behavior manually at the application level. To
-        // do this, we need to both cancel any pending requests, as well as
-        // prevent all future requests from succeeding. These two operations are
-        // not atomic with respect to one another, so we must use a lock to do
-        // so.
-        //
-        // The read() code looks like:
-        //
-        //      1. Make sure the pipe is still open
-        //      2. Submit a read request
-        //      3. Wait for the read request to finish
-        //
-        // The race this lock is preventing is if another thread invokes
-        // close_read() between steps 1 and 2. By atomically executing steps 1
-        // and 2 with a lock with respect to close_read(), we're guaranteed that
-        // no thread will erroneously sit in a read forever.
-        let _guard = self.inner.lock.lock();
-        self.inner.read_closed.store(true, Ordering::SeqCst);
-        self.cancel_io()
-    }
-
-    pub fn close_write(&mut self) -> IoResult<()> {
-        // see comments in close_read() for why this lock is necessary
-        let _guard = self.inner.lock.lock();
-        self.inner.write_closed.store(true, Ordering::SeqCst);
-        self.cancel_io()
-    }
-
-    pub fn set_timeout(&mut self, timeout: Option<u64>) {
-        let deadline = timeout.map(|a| timer::now() + a).unwrap_or(0);
-        self.read_deadline = deadline;
-        self.write_deadline = deadline;
-    }
-    pub fn set_read_timeout(&mut self, timeout: Option<u64>) {
-        self.read_deadline = timeout.map(|a| timer::now() + a).unwrap_or(0);
-    }
-    pub fn set_write_timeout(&mut self, timeout: Option<u64>) {
-        self.write_deadline = timeout.map(|a| timer::now() + a).unwrap_or(0);
-    }
-}
-
-impl Clone for UnixStream {
-    fn clone(&self) -> UnixStream {
-        UnixStream {
-            inner: self.inner.clone(),
-            read: None,
-            write: None,
-            read_deadline: 0,
-            write_deadline: 0,
-        }
-    }
-}
-
-////////////////////////////////////////////////////////////////////////////////
-// Unix Listener
-////////////////////////////////////////////////////////////////////////////////
-
-pub struct UnixListener {
-    handle: libc::HANDLE,
-    name: CString,
-}
-
-unsafe impl Send for UnixListener {}
-unsafe impl Sync for UnixListener {}
-
-impl UnixListener {
-    pub fn bind(addr: &CString) -> IoResult<UnixListener> {
-        // Although we technically don't need the pipe until much later, we
-        // create the initial handle up front to test the validity of the name
-        // and such.
-        let addr_v = try!(to_utf16(addr));
-        let ret = unsafe { pipe(addr_v.as_ptr(), true) };
-        if ret == libc::INVALID_HANDLE_VALUE {
-            Err(super::last_error())
-        } else {
-            Ok(UnixListener { handle: ret, name: addr.clone() })
-        }
-    }
-
-    pub fn listen(self) -> IoResult<UnixAcceptor> {
-        Ok(UnixAcceptor {
-            listener: self,
-            event: try!(Event::new(true, false)),
-            deadline: 0,
-            inner: Arc::new(AcceptorState {
-                abort: try!(Event::new(true, false)),
-                closed: AtomicBool::new(false),
-            }),
-        })
-    }
-
-    pub fn handle(&self) -> libc::HANDLE {
-        self.handle
-    }
-}
-
-impl Drop for UnixListener {
-    fn drop(&mut self) {
-        unsafe { let _ = libc::CloseHandle(self.handle); }
-    }
-}
-
-pub struct UnixAcceptor {
-    inner: Arc<AcceptorState>,
-    listener: UnixListener,
-    event: Event,
-    deadline: u64,
-}
-
-struct AcceptorState {
-    abort: Event,
-    closed: AtomicBool,
-}
-
-impl UnixAcceptor {
-    pub fn accept(&mut self) -> IoResult<UnixStream> {
-        // This function has some funky implementation details when working with
-        // unix pipes. On windows, each server named pipe handle can be
-        // connected to a one or zero clients. To the best of my knowledge, a
-        // named server is considered active and present if there exists at
-        // least one server named pipe for it.
-        //
-        // The model of this function is to take the current known server
-        // handle, connect a client to it, and then transfer ownership to the
-        // UnixStream instance. The next time accept() is invoked, it'll need a
-        // different server handle to connect a client to.
-        //
-        // Note that there is a possible race here. Once our server pipe is
-        // handed off to a `UnixStream` object, the stream could be closed,
-        // meaning that there would be no active server pipes, hence even though
-        // we have a valid `UnixAcceptor`, no one can connect to it. For this
-        // reason, we generate the next accept call's server pipe at the end of
-        // this function call.
-        //
-        // This provides us an invariant that we always have at least one server
-        // connection open at a time, meaning that all connects to this acceptor
-        // should succeed while this is active.
-        //
-        // The actual implementation of doing this is a little tricky. Once a
-        // server pipe is created, a client can connect to it at any time. I
-        // assume that which server a client connects to is nondeterministic, so
-        // we also need to guarantee that the only server able to be connected
-        // to is the one that we're calling ConnectNamedPipe on. This means that
-        // we have to create the second server pipe *after* we've already
-        // accepted a connection. In order to at least somewhat gracefully
-        // handle errors, this means that if the second server pipe creation
-        // fails that we disconnect the connected client and then just keep
-        // using the original server pipe.
-        let handle = self.listener.handle;
-
-        // If we've had an artificial call to close_accept, be sure to never
-        // proceed in accepting new clients in the future
-        if self.inner.closed.load(Ordering::SeqCst) { return Err(eof()) }
-
-        let name = try!(to_utf16(&self.listener.name));
-
-        // Once we've got a "server handle", we need to wait for a client to
-        // connect. The ConnectNamedPipe function will block this thread until
-        // someone on the other end connects. This function can "fail" if a
-        // client connects after we created the pipe but before we got down
-        // here. Thanks windows.
-        let mut overlapped: libc::OVERLAPPED = unsafe { mem::zeroed() };
-        overlapped.hEvent = self.event.handle();
-        if unsafe { libc::ConnectNamedPipe(handle, &mut overlapped) == 0 } {
-            let mut err = unsafe { libc::GetLastError() };
-
-            if err == libc::ERROR_IO_PENDING as libc::DWORD {
-                // Process a timeout if one is pending
-                let wait_succeeded = await(handle, self.deadline,
-                                           &[self.inner.abort.handle(),
-                                             overlapped.hEvent]);
-
-                // This will block until the overlapped I/O is completed. The
-                // timeout was previously handled, so this will either block in
-                // the normal case or succeed very quickly in the timeout case.
-                let ret = unsafe {
-                    let mut transfer = 0;
-                    libc::GetOverlappedResult(handle,
-                                              &mut overlapped,
-                                              &mut transfer,
-                                              libc::TRUE)
-                };
-                if ret == 0 {
-                    if wait_succeeded.is_ok() {
-                        err = unsafe { libc::GetLastError() };
-                    } else {
-                        return Err(sys_common::timeout("accept timed out"))
-                    }
-                } else {
-                    // we succeeded, bypass the check below
-                    err = libc::ERROR_PIPE_CONNECTED as libc::DWORD;
-                }
-            }
-            if err != libc::ERROR_PIPE_CONNECTED as libc::DWORD {
-                return Err(super::last_error())
-            }
-        }
-
-        // Now that we've got a connected client to our handle, we need to
-        // create a second server pipe. If this fails, we disconnect the
-        // connected client and return an error (see comments above).
-        let new_handle = unsafe { pipe(name.as_ptr(), false) };
-        if new_handle == libc::INVALID_HANDLE_VALUE {
-            let ret = Err(super::last_error());
-            // If our disconnection fails, then there's not really a whole lot
-            // that we can do, so panic
-            let err = unsafe { libc::DisconnectNamedPipe(handle) };
-            assert!(err != 0);
-            return ret;
-        } else {
-            self.listener.handle = new_handle;
-        }
-
-        // Transfer ownership of our handle into this stream
-        Ok(UnixStream {
-            inner: Arc::new(Inner::new(handle)),
-            read: None,
-            write: None,
-            read_deadline: 0,
-            write_deadline: 0,
-        })
-    }
-
-    pub fn set_timeout(&mut self, timeout: Option<u64>) {
-        self.deadline = timeout.map(|i| i + timer::now()).unwrap_or(0);
-    }
-
-    pub fn close_accept(&mut self) -> IoResult<()> {
-        self.inner.closed.store(true, Ordering::SeqCst);
-        let ret = unsafe {
-            c::SetEvent(self.inner.abort.handle())
-        };
-        if ret == 0 {
-            Err(super::last_error())
-        } else {
-            Ok(())
-        }
-    }
-
-    pub fn handle(&self) -> libc::HANDLE {
-        self.listener.handle()
-    }
-}
-
-impl Clone for UnixAcceptor {
-    fn clone(&self) -> UnixAcceptor {
-        let name = to_utf16(&self.listener.name).unwrap();
-        UnixAcceptor {
-            inner: self.inner.clone(),
-            event: Event::new(true, false).unwrap(),
-            deadline: 0,
-            listener: UnixListener {
-                name: self.listener.name.clone(),
-                handle: unsafe {
-                    let p = pipe(name.as_ptr(), false) ;
-                    assert!(p != libc::INVALID_HANDLE_VALUE as libc::HANDLE);
-                    p
-                },
-            },
-        }
-    }
-}
diff --git a/src/libstd/sys/windows/process.rs b/src/libstd/sys/windows/process.rs
deleted file mode 100644
index b10042090dd..00000000000
--- a/src/libstd/sys/windows/process.rs
+++ /dev/null
@@ -1,518 +0,0 @@
-// Copyright 2012-2014 The Rust Project Developers. See the COPYRIGHT
-// file at the top-level directory of this distribution and at
-// http://rust-lang.org/COPYRIGHT.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-#![allow(deprecated)] // this module itself is essentially deprecated
-
-use prelude::v1::*;
-
-use collections;
-use env;
-use ffi::CString;
-use hash::Hash;
-use libc::{pid_t, c_void};
-use libc;
-use mem;
-#[allow(deprecated)] use old_io::fs::PathExtensions;
-use old_io::process::{ProcessExit, ExitStatus};
-use old_io::{IoResult, IoError};
-use old_io;
-use fs::PathExt;
-use old_path::{BytesContainer, GenericPath};
-use ptr;
-use str;
-use sync::{StaticMutex, MUTEX_INIT};
-use sys::fs::FileDesc;
-use sys::timer;
-use sys_common::{AsInner, timeout};
-
-pub use sys_common::ProcessConfig;
-
-// `CreateProcess` is racy!
-// http://support.microsoft.com/kb/315939
-static CREATE_PROCESS_LOCK: StaticMutex = MUTEX_INIT;
-
-/// A value representing a child process.
-///
-/// The lifetime of this value is linked to the lifetime of the actual
-/// process - the Process destructor calls self.finish() which waits
-/// for the process to terminate.
-pub struct Process {
-    /// The unique id of the process (this should never be negative).
-    pid: pid_t,
-
-    /// A HANDLE to the process, which will prevent the pid being
-    /// re-used until the handle is closed.
-    handle: *mut (),
-}
-
-impl Drop for Process {
-    fn drop(&mut self) {
-        free_handle(self.handle);
-    }
-}
-
-impl Process {
-    pub fn id(&self) -> pid_t {
-        self.pid
-    }
-
-    pub unsafe fn kill(&self, signal: isize) -> IoResult<()> {
-        Process::killpid(self.pid, signal)
-    }
-
-    pub unsafe fn killpid(pid: pid_t, signal: isize) -> IoResult<()> {
-        let handle = libc::OpenProcess(libc::PROCESS_TERMINATE |
-                                       libc::PROCESS_QUERY_INFORMATION,
-                                       libc::FALSE, pid as libc::DWORD);
-        if handle.is_null() {
-            return Err(super::last_error())
-        }
-        let ret = match signal {
-            // test for existence on signal 0
-            0 => {
-                let mut status = 0;
-                let ret = libc::GetExitCodeProcess(handle, &mut status);
-                if ret == 0 {
-                    Err(super::last_error())
-                } else if status != libc::STILL_ACTIVE {
-                    Err(IoError {
-                        kind: old_io::InvalidInput,
-                        desc: "no process to kill",
-                        detail: None,
-                    })
-                } else {
-                    Ok(())
-                }
-            }
-            15 | 9 => { // sigterm or sigkill
-                let ret = libc::TerminateProcess(handle, 1);
-                super::mkerr_winbool(ret)
-            }
-            _ => Err(IoError {
-                kind: old_io::IoUnavailable,
-                desc: "unsupported signal on windows",
-                detail: None,
-            })
-        };
-        let _ = libc::CloseHandle(handle);
-        return ret;
-    }
-
-    #[allow(deprecated)]
-    pub fn spawn<K, V, C, P>(cfg: &C, in_fd: Option<P>,
-                              out_fd: Option<P>, err_fd: Option<P>)
-                              -> IoResult<Process>
-        where C: ProcessConfig<K, V>, P: AsInner<FileDesc>,
-              K: BytesContainer + Eq + Hash, V: BytesContainer
-    {
-        use libc::types::os::arch::extra::{DWORD, HANDLE, STARTUPINFO};
-        use libc::consts::os::extra::{
-            TRUE, FALSE,
-            STARTF_USESTDHANDLES,
-            INVALID_HANDLE_VALUE,
-            DUPLICATE_SAME_ACCESS
-        };
-        use libc::funcs::extra::kernel32::{
-            GetCurrentProcess,
-            DuplicateHandle,
-            CloseHandle,
-            CreateProcessW
-        };
-        use libc::funcs::extra::msvcrt::get_osfhandle;
-
-        use mem;
-
-        if cfg.gid().is_some() || cfg.uid().is_some() {
-            return Err(IoError {
-                kind: old_io::IoUnavailable,
-                desc: "unsupported gid/uid requested on windows",
-                detail: None,
-            })
-        }
-
-        // To have the spawning semantics of unix/windows stay the same, we need to
-        // read the *child's* PATH if one is provided. See #15149 for more details.
-        let program = cfg.env().and_then(|env| {
-            for (key, v) in env {
-                if b"PATH" != key.container_as_bytes() { continue }
-                let v = match ::str::from_utf8(v.container_as_bytes()) {
-                    Ok(s) => s,
-                    Err(..) => continue,
-                };
-
-                // Split the value and test each path to see if the
-                // program exists.
-                for path in ::env::split_paths(v) {
-                    let program = str::from_utf8(cfg.program().as_bytes()).unwrap();
-                    let path = path.join(program)
-                                   .with_extension(env::consts::EXE_EXTENSION);
-                    if path.exists() {
-                        return Some(CString::new(path.to_str().unwrap()).unwrap())
-                    }
-                }
-                break
-            }
-            None
-        });
-
-        unsafe {
-            let mut si = zeroed_startupinfo();
-            si.cb = mem::size_of::<STARTUPINFO>() as DWORD;
-            si.dwFlags = STARTF_USESTDHANDLES;
-
-            let cur_proc = GetCurrentProcess();
-
-            // Similarly to unix, we don't actually leave holes for the stdio file
-            // descriptors, but rather open up /dev/null equivalents. These
-            // equivalents are drawn from libuv's windows process spawning.
-            let set_fd = |fd: &Option<P>, slot: &mut HANDLE,
-                          is_stdin: bool| {
-                match *fd {
-                    None => {
-                        let access = if is_stdin {
-                            libc::FILE_GENERIC_READ
-                        } else {
-                            libc::FILE_GENERIC_WRITE | libc::FILE_READ_ATTRIBUTES
-                        };
-                        let size = mem::size_of::<libc::SECURITY_ATTRIBUTES>();
-                        let mut sa = libc::SECURITY_ATTRIBUTES {
-                            nLength: size as libc::DWORD,
-                            lpSecurityDescriptor: ptr::null_mut(),
-                            bInheritHandle: 1,
-                        };
-                        let mut filename: Vec<u16> = "NUL".utf16_units().collect();
-                        filename.push(0);
-                        *slot = libc::CreateFileW(filename.as_ptr(),
-                                                  access,
-                                                  libc::FILE_SHARE_READ |
-                                                      libc::FILE_SHARE_WRITE,
-                                                  &mut sa,
-                                                  libc::OPEN_EXISTING,
-                                                  0,
-                                                  ptr::null_mut());
-                        if *slot == INVALID_HANDLE_VALUE {
-                            return Err(super::last_error())
-                        }
-                    }
-                    Some(ref fd) => {
-                        let orig = get_osfhandle(fd.as_inner().fd()) as HANDLE;
-                        if orig == INVALID_HANDLE_VALUE {
-                            return Err(super::last_error())
-                        }
-                        if DuplicateHandle(cur_proc, orig, cur_proc, slot,
-                                           0, TRUE, DUPLICATE_SAME_ACCESS) == FALSE {
-                            return Err(super::last_error())
-                        }
-                    }
-                }
-                Ok(())
-            };
-
-            try!(set_fd(&in_fd, &mut si.hStdInput, true));
-            try!(set_fd(&out_fd, &mut si.hStdOutput, false));
-            try!(set_fd(&err_fd, &mut si.hStdError, false));
-
-            let cmd_str = make_command_line(program.as_ref().unwrap_or(cfg.program()),
-                                            cfg.args());
-            let mut pi = zeroed_process_information();
-            let mut create_err = None;
-
-            // stolen from the libuv code.
-            let mut flags = libc::CREATE_UNICODE_ENVIRONMENT;
-            if cfg.detach() {
-                flags |= libc::DETACHED_PROCESS | libc::CREATE_NEW_PROCESS_GROUP;
-            }
-
-            with_envp(cfg.env(), |envp| {
-                with_dirp(cfg.cwd(), |dirp| {
-                    let mut cmd_str: Vec<u16> = cmd_str.utf16_units().collect();
-                    cmd_str.push(0);
-                    let _lock = CREATE_PROCESS_LOCK.lock().unwrap();
-                    let created = CreateProcessW(ptr::null(),
-                                                 cmd_str.as_mut_ptr(),
-                                                 ptr::null_mut(),
-                                                 ptr::null_mut(),
-                                                 TRUE,
-                                                 flags, envp, dirp,
-                                                 &mut si, &mut pi);
-                    if created == FALSE {
-                        create_err = Some(super::last_error());
-                    }
-                })
-            });
-
-            assert!(CloseHandle(si.hStdInput) != 0);
-            assert!(CloseHandle(si.hStdOutput) != 0);
-            assert!(CloseHandle(si.hStdError) != 0);
-
-            match create_err {
-                Some(err) => return Err(err),
-                None => {}
-            }
-
-            // We close the thread handle because we don't care about keeping the
-            // thread id valid, and we aren't keeping the thread handle around to be
-            // able to close it later. We don't close the process handle however
-            // because std::we want the process id to stay valid at least until the
-            // calling code closes the process handle.
-            assert!(CloseHandle(pi.hThread) != 0);
-
-            Ok(Process {
-                pid: pi.dwProcessId as pid_t,
-                handle: pi.hProcess as *mut ()
-            })
-        }
-    }
-
-    /// Waits for a process to exit and returns the exit code, failing
-    /// if there is no process with the specified id.
-    ///
-    /// Note that this is private to avoid race conditions on unix where if
-    /// a user calls waitpid(some_process.get_id()) then some_process.finish()
-    /// and some_process.destroy() and some_process.finalize() will then either
-    /// operate on a none-existent process or, even worse, on a newer process
-    /// with the same id.
-    pub fn wait(&self, deadline: u64) -> IoResult<ProcessExit> {
-        use libc::types::os::arch::extra::DWORD;
-        use libc::consts::os::extra::{
-            SYNCHRONIZE,
-            PROCESS_QUERY_INFORMATION,
-            FALSE,
-            STILL_ACTIVE,
-            INFINITE,
-            WAIT_TIMEOUT,
-            WAIT_OBJECT_0,
-        };
-        use libc::funcs::extra::kernel32::{
-            OpenProcess,
-            GetExitCodeProcess,
-            CloseHandle,
-            WaitForSingleObject,
-        };
-
-        unsafe {
-            let process = OpenProcess(SYNCHRONIZE | PROCESS_QUERY_INFORMATION,
-                                      FALSE,
-                                      self.pid as DWORD);
-            if process.is_null() {
-                return Err(super::last_error())
-            }
-
-            loop {
-                let mut status = 0;
-                if GetExitCodeProcess(process, &mut status) == FALSE {
-                    let err = Err(super::last_error());
-                    assert!(CloseHandle(process) != 0);
-                    return err;
-                }
-                if status != STILL_ACTIVE {
-                    assert!(CloseHandle(process) != 0);
-                    return Ok(ExitStatus(status as isize));
-                }
-                let interval = if deadline == 0 {
-                    INFINITE
-                } else {
-                    let now = timer::now();
-                    if deadline < now {0} else {(deadline - now) as u32}
-                };
-                match WaitForSingleObject(process, interval) {
-                    WAIT_OBJECT_0 => {}
-                    WAIT_TIMEOUT => {
-                        assert!(CloseHandle(process) != 0);
-                        return Err(timeout("process wait timed out"))
-                    }
-                    _ => {
-                        let err = Err(super::last_error());
-                        assert!(CloseHandle(process) != 0);
-                        return err
-                    }
-                }
-            }
-        }
-    }
-}
-
-fn zeroed_startupinfo() -> libc::types::os::arch::extra::STARTUPINFO {
-    libc::types::os::arch::extra::STARTUPINFO {
-        cb: 0,
-        lpReserved: ptr::null_mut(),
-        lpDesktop: ptr::null_mut(),
-        lpTitle: ptr::null_mut(),
-        dwX: 0,
-        dwY: 0,
-        dwXSize: 0,
-        dwYSize: 0,
-        dwXCountChars: 0,
-        dwYCountCharts: 0,
-        dwFillAttribute: 0,
-        dwFlags: 0,
-        wShowWindow: 0,
-        cbReserved2: 0,
-        lpReserved2: ptr::null_mut(),
-        hStdInput: libc::INVALID_HANDLE_VALUE,
-        hStdOutput: libc::INVALID_HANDLE_VALUE,
-        hStdError: libc::INVALID_HANDLE_VALUE,
-    }
-}
-
-fn zeroed_process_information() -> libc::types::os::arch::extra::PROCESS_INFORMATION {
-    libc::types::os::arch::extra::PROCESS_INFORMATION {
-        hProcess: ptr::null_mut(),
-        hThread: ptr::null_mut(),
-        dwProcessId: 0,
-        dwThreadId: 0
-    }
-}
-
-fn make_command_line(prog: &CString, args: &[CString]) -> String {
-    let mut cmd = String::new();
-    append_arg(&mut cmd, str::from_utf8(prog.as_bytes()).ok()
-                             .expect("expected program name to be utf-8 encoded"));
-    for arg in args {
-        cmd.push(' ');
-        append_arg(&mut cmd, str::from_utf8(arg.as_bytes()).ok()
-                                .expect("expected argument to be utf-8 encoded"));
-    }
-    return cmd;
-
-    fn append_arg(cmd: &mut String, arg: &str) {
-        // If an argument has 0 characters then we need to quote it to ensure
-        // that it actually gets passed through on the command line or otherwise
-        // it will be dropped entirely when parsed on the other end.
-        let quote = arg.chars().any(|c| c == ' ' || c == '\t') || arg.len() == 0;
-        if quote {
-            cmd.push('"');
-        }
-        let argvec: Vec<char> = arg.chars().collect();
-        for i in 0..argvec.len() {
-            append_char_at(cmd, &argvec, i);
-        }
-        if quote {
-            cmd.push('"');
-        }
-    }
-
-    fn append_char_at(cmd: &mut String, arg: &[char], i: usize) {
-        match arg[i] {
-            '"' => {
-                // Escape quotes.
-                cmd.push_str("\\\"");
-            }
-            '\\' => {
-                if backslash_run_ends_in_quote(arg, i) {
-                    // Double all backslashes that are in runs before quotes.
-                    cmd.push_str("\\\\");
-                } else {
-                    // Pass other backslashes through unescaped.
-                    cmd.push('\\');
-                }
-            }
-            c => {
-                cmd.push(c);
-            }
-        }
-    }
-
-    fn backslash_run_ends_in_quote(s: &[char], mut i: usize) -> bool {
-        while i < s.len() && s[i] == '\\' {
-            i += 1;
-        }
-        return i < s.len() && s[i] == '"';
-    }
-}
-
-fn with_envp<K, V, T, F>(env: Option<&collections::HashMap<K, V>>, cb: F) -> T
-    where K: BytesContainer + Eq + Hash,
-          V: BytesContainer,
-          F: FnOnce(*mut c_void) -> T,
-{
-    // On Windows we pass an "environment block" which is not a char**, but
-    // rather a concatenation of null-terminated k=v\0 sequences, with a final
-    // \0 to terminate.
-    match env {
-        Some(env) => {
-            let mut blk = Vec::new();
-
-            for pair in env {
-                let kv = format!("{}={}",
-                                 pair.0.container_as_str().unwrap(),
-                                 pair.1.container_as_str().unwrap());
-                blk.extend(kv.utf16_units());
-                blk.push(0);
-            }
-
-            blk.push(0);
-
-            cb(blk.as_mut_ptr() as *mut c_void)
-        }
-        _ => cb(ptr::null_mut())
-    }
-}
-
-fn with_dirp<T, F>(d: Option<&CString>, cb: F) -> T where
-    F: FnOnce(*const u16) -> T,
-{
-    match d {
-      Some(dir) => {
-          let dir_str = str::from_utf8(dir.as_bytes()).ok()
-                           .expect("expected workingdirectory to be utf-8 encoded");
-          let mut dir_str: Vec<u16> = dir_str.utf16_units().collect();
-          dir_str.push(0);
-          cb(dir_str.as_ptr())
-      },
-      None => cb(ptr::null())
-    }
-}
-
-fn free_handle(handle: *mut ()) {
-    assert!(unsafe {
-        libc::CloseHandle(mem::transmute(handle)) != 0
-    })
-}
-
-#[cfg(test)]
-mod tests {
-    use prelude::v1::*;
-    use str;
-    use ffi::CString;
-    use super::make_command_line;
-
-    #[test]
-    fn test_make_command_line() {
-        fn test_wrapper(prog: &str, args: &[&str]) -> String {
-            make_command_line(&CString::new(prog).unwrap(),
-                              &args.iter()
-                                   .map(|a| CString::new(*a).unwrap())
-                                   .collect::<Vec<CString>>())
-        }
-
-        assert_eq!(
-            test_wrapper("prog", &["aaa", "bbb", "ccc"]),
-            "prog aaa bbb ccc"
-        );
-
-        assert_eq!(
-            test_wrapper("C:\\Program Files\\blah\\blah.exe", &["aaa"]),
-            "\"C:\\Program Files\\blah\\blah.exe\" aaa"
-        );
-        assert_eq!(
-            test_wrapper("C:\\Program Files\\test", &["aa\"bb"]),
-            "\"C:\\Program Files\\test\" aa\\\"bb"
-        );
-        assert_eq!(
-            test_wrapper("echo", &["a b c"]),
-            "echo \"a b c\""
-        );
-        assert_eq!(
-            test_wrapper("\u{03c0}\u{042f}\u{97f3}\u{00e6}\u{221e}", &[]),
-            "\u{03c0}\u{042f}\u{97f3}\u{00e6}\u{221e}"
-        );
-    }
-}
diff --git a/src/libstd/sys/windows/tcp.rs b/src/libstd/sys/windows/tcp.rs
deleted file mode 100644
index 41e97dc8475..00000000000
--- a/src/libstd/sys/windows/tcp.rs
+++ /dev/null
@@ -1,230 +0,0 @@
-// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
-// file at the top-level directory of this distribution and at
-// http://rust-lang.org/COPYRIGHT.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-#![allow(deprecated)]
-
-use prelude::v1::*;
-
-use old_io::net::ip;
-use old_io::IoResult;
-use libc;
-use libc::consts::os::extra::INVALID_SOCKET;
-use mem;
-use ptr;
-use super::{last_error, last_net_error, sock_t};
-use sync::Arc;
-use sync::atomic::{AtomicBool, Ordering};
-use sys::{self, c, set_nonblocking, wouldblock, timer};
-use sys_common::{timeout, eof, net};
-
-pub use sys_common::net::TcpStream;
-
-pub struct Event(c::WSAEVENT);
-
-unsafe impl Send for Event {}
-unsafe impl Sync for Event {}
-
-impl Event {
-    pub fn new() -> IoResult<Event> {
-        let event = unsafe { c::WSACreateEvent() };
-        if event == c::WSA_INVALID_EVENT {
-            Err(super::last_error())
-        } else {
-            Ok(Event(event))
-        }
-    }
-
-    pub fn handle(&self) -> c::WSAEVENT { let Event(handle) = *self; handle }
-}
-
-impl Drop for Event {
-    fn drop(&mut self) {
-        unsafe { let _ = c::WSACloseEvent(self.handle()); }
-    }
-}
-
-////////////////////////////////////////////////////////////////////////////////
-// TCP listeners
-////////////////////////////////////////////////////////////////////////////////
-
-pub struct TcpListener { sock: sock_t }
-
-unsafe impl Send for TcpListener {}
-unsafe impl Sync for TcpListener {}
-
-impl TcpListener {
-    pub fn bind(addr: ip::SocketAddr) -> IoResult<TcpListener> {
-        sys::init_net();
-
-        let sock = try!(net::socket(addr, libc::SOCK_STREAM));
-        let ret = TcpListener { sock: sock };
-
-        let mut storage = unsafe { mem::zeroed() };
-        let len = net::addr_to_sockaddr(addr, &mut storage);
-        let addrp = &storage as *const _ as *const libc::sockaddr;
-
-        match unsafe { libc::bind(sock, addrp, len) } {
-            -1 => Err(last_net_error()),
-            _ => Ok(ret),
-        }
-    }
-
-    pub fn socket(&self) -> sock_t { self.sock }
-
-    pub fn listen(self, backlog: isize) -> IoResult<TcpAcceptor> {
-        match unsafe { libc::listen(self.socket(), backlog as libc::c_int) } {
-            -1 => Err(last_net_error()),
-
-            _ => {
-                let accept = try!(Event::new());
-                let ret = unsafe {
-                    c::WSAEventSelect(self.socket(), accept.handle(), c::FD_ACCEPT)
-                };
-                if ret != 0 {
-                    return Err(last_net_error())
-                }
-                Ok(TcpAcceptor {
-                    inner: Arc::new(AcceptorInner {
-                        listener: self,
-                        abort: try!(Event::new()),
-                        accept: accept,
-                        closed: AtomicBool::new(false),
-                    }),
-                    deadline: 0,
-                })
-            }
-        }
-    }
-
-    pub fn socket_name(&mut self) -> IoResult<ip::SocketAddr> {
-        net::sockname(self.socket(), libc::getsockname)
-    }
-}
-
-impl Drop for TcpListener {
-    fn drop(&mut self) {
-        unsafe { super::close_sock(self.sock); }
-    }
-}
-
-pub struct TcpAcceptor {
-    inner: Arc<AcceptorInner>,
-    deadline: u64,
-}
-
-struct AcceptorInner {
-    listener: TcpListener,
-    abort: Event,
-    accept: Event,
-    closed: AtomicBool,
-}
-
-unsafe impl Sync for AcceptorInner {}
-
-impl TcpAcceptor {
-    pub fn socket(&self) -> sock_t { self.inner.listener.socket() }
-
-    pub fn accept(&mut self) -> IoResult<TcpStream> {
-        // Unlink unix, windows cannot invoke `select` on arbitrary file
-        // descriptors like pipes, only sockets. Consequently, windows cannot
-        // use the same implementation as unix for accept() when close_accept()
-        // is considered.
-        //
-        // In order to implement close_accept() and timeouts, windows uses
-        // event handles. An acceptor-specific abort event is created which
-        // will only get set in close_accept(), and it will never be un-set.
-        // Additionally, another acceptor-specific event is associated with the
-        // FD_ACCEPT network event.
-        //
-        // These two events are then passed to WaitForMultipleEvents to see
-        // which one triggers first, and the timeout passed to this function is
-        // the local timeout for the acceptor.
-        //
-        // If the wait times out, then the accept timed out. If the wait
-        // succeeds with the abort event, then we were closed, and if the wait
-        // succeeds otherwise, then we do a nonblocking poll via `accept` to
-        // see if we can accept a connection. The connection is candidate to be
-        // stolen, so we do all of this in a loop as well.
-        let events = [self.inner.abort.handle(), self.inner.accept.handle()];
-
-        while !self.inner.closed.load(Ordering::SeqCst) {
-            let ms = if self.deadline == 0 {
-                c::WSA_INFINITE as u64
-            } else {
-                let now = timer::now();
-                if self.deadline < now {0} else {self.deadline - now}
-            };
-            let ret = unsafe {
-                c::WSAWaitForMultipleEvents(2, events.as_ptr(), libc::FALSE,
-                                            ms as libc::DWORD, libc::FALSE)
-            };
-            match ret {
-                c::WSA_WAIT_TIMEOUT => {
-                    return Err(timeout("accept timed out"))
-                }
-                c::WSA_WAIT_FAILED => return Err(last_net_error()),
-                c::WSA_WAIT_EVENT_0 => break,
-                n => assert_eq!(n, c::WSA_WAIT_EVENT_0 + 1),
-            }
-
-            let mut wsaevents: c::WSANETWORKEVENTS = unsafe { mem::zeroed() };
-            let ret = unsafe {
-                c::WSAEnumNetworkEvents(self.socket(), events[1], &mut wsaevents)
-            };
-            if ret != 0 { return Err(last_net_error()) }
-
-            if wsaevents.lNetworkEvents & c::FD_ACCEPT == 0 { continue }
-            match unsafe {
-                libc::accept(self.socket(), ptr::null_mut(), ptr::null_mut())
-            } {
-                INVALID_SOCKET if wouldblock() => {}
-                INVALID_SOCKET => return Err(last_net_error()),
-
-                // Accepted sockets inherit the same properties as the caller,
-                // so we need to deregister our event and switch the socket back
-                // to blocking mode
-                socket => {
-                    let stream = TcpStream::new(socket);
-                    let ret = unsafe {
-                        c::WSAEventSelect(socket, events[1], 0)
-                    };
-                    if ret != 0 { return Err(last_net_error()) }
-                    set_nonblocking(socket, false);
-                    return Ok(stream)
-                }
-            }
-        }
-
-        Err(eof())
-    }
-
-    pub fn set_timeout(&mut self, timeout: Option<u64>) {
-        self.deadline = timeout.map(|a| timer::now() + a).unwrap_or(0);
-    }
-
-    pub fn close_accept(&mut self) -> IoResult<()> {
-        self.inner.closed.store(true, Ordering::SeqCst);
-        let ret = unsafe { c::WSASetEvent(self.inner.abort.handle()) };
-        if ret == libc::TRUE {
-            Ok(())
-        } else {
-            Err(last_net_error())
-        }
-    }
-}
-
-impl Clone for TcpAcceptor {
-    fn clone(&self) -> TcpAcceptor {
-        TcpAcceptor {
-            inner: self.inner.clone(),
-            deadline: 0,
-        }
-    }
-}
diff --git a/src/libstd/sys/windows/timer.rs b/src/libstd/sys/windows/timer.rs
deleted file mode 100644
index 8856cc26b2e..00000000000
--- a/src/libstd/sys/windows/timer.rs
+++ /dev/null
@@ -1,214 +0,0 @@
-// Copyright 2013 The Rust Project Developers. See the COPYRIGHT
-// file at the top-level directory of this distribution and at
-// http://rust-lang.org/COPYRIGHT.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-//! Timers based on Windows WaitableTimers
-//!
-//! This implementation is meant to be used solely on windows. As with other
-//! implementations, there is a worker thread which is doing all the waiting on
-//! a large number of timers for all active timers in the system. This worker
-//! thread uses the select() equivalent, WaitForMultipleObjects. One of the
-//! objects being waited on is a signal into the worker thread to notify that
-//! the incoming channel should be looked at.
-//!
-//! Other than that, the implementation is pretty straightforward in terms of
-//! the other two implementations of timers with nothing *that* new showing up.
-
-#![allow(deprecated)]
-
-use prelude::v1::*;
-use self::Req::*;
-
-use libc;
-use ptr;
-
-use old_io::IoResult;
-use sys_common::helper_thread::Helper;
-use sync::mpsc::{channel, TryRecvError, Sender, Receiver};
-
-helper_init! { static HELPER: Helper<Req> }
-
-pub trait Callback {
-    fn call(&mut self);
-}
-
-pub struct Timer {
-    obj: libc::HANDLE,
-    on_worker: bool,
-}
-
-pub enum Req {
-    NewTimer(libc::HANDLE, Box<Callback + Send>, bool),
-    RemoveTimer(libc::HANDLE, Sender<()>),
-}
-
-unsafe impl Send for Timer {}
-unsafe impl Send for Req {}
-
-fn helper(input: libc::HANDLE, messages: Receiver<Req>, _: ()) {
-    let mut objs = vec![input];
-    let mut chans = vec![];
-
-    'outer: loop {
-        let idx = unsafe {
-            imp::WaitForMultipleObjects(objs.len() as libc::DWORD,
-                                        objs.as_ptr(),
-                                        0 as libc::BOOL,
-                                        libc::INFINITE)
-        };
-
-        if idx == 0 {
-            loop {
-                match messages.try_recv() {
-                    Ok(NewTimer(obj, c, one)) => {
-                        objs.push(obj);
-                        chans.push((c, one));
-                    }
-                    Ok(RemoveTimer(obj, c)) => {
-                        c.send(()).unwrap();
-                        match objs.iter().position(|&o| o == obj) {
-                            Some(i) => {
-                                drop(objs.remove(i));
-                                drop(chans.remove(i - 1));
-                            }
-                            None => {}
-                        }
-                    }
-                    // See the comment in unix::timer for why we don't have any
-                    // asserts here and why we're likely just leaving timers on
-                    // the floor as we exit.
-                    Err(TryRecvError::Disconnected) => {
-                        break 'outer;
-                    }
-                    Err(..) => break
-                }
-            }
-        } else {
-            let remove = {
-                match &mut chans[idx as usize - 1] {
-                    &mut (ref mut c, oneshot) => { c.call(); oneshot }
-                }
-            };
-            if remove {
-                drop(objs.remove(idx as usize));
-                drop(chans.remove(idx as usize - 1));
-            }
-        }
-    }
-}
-
-// returns the current time (in milliseconds)
-pub fn now() -> u64 {
-    let mut ticks_per_s = 0;
-    assert_eq!(unsafe { libc::QueryPerformanceFrequency(&mut ticks_per_s) }, 1);
-    let ticks_per_s = if ticks_per_s == 0 {1} else {ticks_per_s};
-    let mut ticks = 0;
-    assert_eq!(unsafe { libc::QueryPerformanceCounter(&mut ticks) }, 1);
-
-    return (ticks as u64 * 1000) / (ticks_per_s as u64);
-}
-
-impl Timer {
-    pub fn new() -> IoResult<Timer> {
-        HELPER.boot(|| {}, helper);
-
-        let obj = unsafe {
-            imp::CreateWaitableTimerA(ptr::null_mut(), 0, ptr::null())
-        };
-        if obj.is_null() {
-            Err(super::last_error())
-        } else {
-            Ok(Timer { obj: obj, on_worker: false, })
-        }
-    }
-
-    fn remove(&mut self) {
-        if !self.on_worker { return }
-
-        let (tx, rx) = channel();
-        HELPER.send(RemoveTimer(self.obj, tx));
-        rx.recv().unwrap();
-
-        self.on_worker = false;
-    }
-
-    pub fn sleep(&mut self, msecs: u64) {
-        self.remove();
-
-        // there are 10^6 nanoseconds in a millisecond, and the parameter is in
-        // 100ns intervals, so we multiply by 10^4.
-        let due = -(msecs as i64 * 10000) as libc::LARGE_INTEGER;
-        assert_eq!(unsafe {
-            imp::SetWaitableTimer(self.obj, &due, 0, ptr::null_mut(),
-                                  ptr::null_mut(), 0)
-        }, 1);
-
-        let _ = unsafe { imp::WaitForSingleObject(self.obj, libc::INFINITE) };
-    }
-
-    pub fn oneshot(&mut self, msecs: u64, cb: Box<Callback + Send>) {
-        self.remove();
-
-        // see above for the calculation
-        let due = -(msecs as i64 * 10000) as libc::LARGE_INTEGER;
-        assert_eq!(unsafe {
-            imp::SetWaitableTimer(self.obj, &due, 0, ptr::null_mut(),
-                                  ptr::null_mut(), 0)
-        }, 1);
-
-        HELPER.send(NewTimer(self.obj, cb, true));
-        self.on_worker = true;
-    }
-
-    pub fn period(&mut self, msecs: u64, cb: Box<Callback + Send>) {
-        self.remove();
-
-        // see above for the calculation
-        let due = -(msecs as i64 * 10000) as libc::LARGE_INTEGER;
-        assert_eq!(unsafe {
-            imp::SetWaitableTimer(self.obj, &due, msecs as libc::LONG,
-                                  ptr::null_mut(), ptr::null_mut(), 0)
-        }, 1);
-
-        HELPER.send(NewTimer(self.obj, cb, false));
-        self.on_worker = true;
-    }
-}
-
-impl Drop for Timer {
-    fn drop(&mut self) {
-        self.remove();
-        assert!(unsafe { libc::CloseHandle(self.obj) != 0 });
-    }
-}
-
-mod imp {
-    use libc::{LPSECURITY_ATTRIBUTES, BOOL, LPCSTR, HANDLE, LARGE_INTEGER,
-                    LONG, LPVOID, DWORD, c_void};
-
-    pub type PTIMERAPCROUTINE = *mut c_void;
-
-    extern "system" {
-        pub fn CreateWaitableTimerA(lpTimerAttributes: LPSECURITY_ATTRIBUTES,
-                                    bManualReset: BOOL,
-                                    lpTimerName: LPCSTR) -> HANDLE;
-        pub fn SetWaitableTimer(hTimer: HANDLE,
-                                pDueTime: *const LARGE_INTEGER,
-                                lPeriod: LONG,
-                                pfnCompletionRoutine: PTIMERAPCROUTINE,
-                                lpArgToCompletionRoutine: LPVOID,
-                                fResume: BOOL) -> BOOL;
-        pub fn WaitForMultipleObjects(nCount: DWORD,
-                                      lpHandles: *const HANDLE,
-                                      bWaitAll: BOOL,
-                                      dwMilliseconds: DWORD) -> DWORD;
-        pub fn WaitForSingleObject(hHandle: HANDLE,
-                                   dwMilliseconds: DWORD) -> DWORD;
-    }
-}
diff --git a/src/libstd/sys/windows/tty.rs b/src/libstd/sys/windows/tty.rs
deleted file mode 100644
index 791c7532bd0..00000000000
--- a/src/libstd/sys/windows/tty.rs
+++ /dev/null
@@ -1,169 +0,0 @@
-// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
-// file at the top-level directory of this distribution and at
-// http://rust-lang.org/COPYRIGHT.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-// ignore-lexer-test FIXME #15877
-
-//! Windows specific console TTY implementation
-//!
-//! This module contains the implementation of a Windows specific console TTY.
-//! Also converts between UTF-16 and UTF-8. Windows has very poor support for
-//! UTF-8 and some functions will panic. In particular ReadFile and ReadConsole
-//! will panic when the codepage is set to UTF-8 and a Unicode character is
-//! entered.
-//!
-//! FIXME
-//! This implementation does not account for codepoints that are split across
-//! multiple reads and writes. Also, this implementation does not expose a way
-//! to read/write UTF-16 directly. When/if Rust receives a Reader/Writer
-//! wrapper that performs encoding/decoding, this implementation should switch
-//! to working in raw UTF-16, with such a wrapper around it.
-
-#![allow(deprecated)]
-
-use prelude::v1::*;
-
-use old_io::{self, IoError, IoResult, MemReader, Reader};
-use iter::repeat;
-use libc::types::os::arch::extra::LPCVOID;
-use libc::{c_int, HANDLE, LPDWORD, DWORD, LPVOID};
-use libc::{get_osfhandle, CloseHandle};
-use mem;
-use ptr;
-use str::from_utf8;
-use super::c::{ENABLE_ECHO_INPUT, ENABLE_EXTENDED_FLAGS};
-use super::c::{ENABLE_INSERT_MODE, ENABLE_LINE_INPUT};
-use super::c::{ENABLE_PROCESSED_INPUT, ENABLE_QUICK_EDIT_MODE};
-use super::c::CONSOLE_SCREEN_BUFFER_INFO;
-use super::c::{ReadConsoleW, WriteConsoleW, GetConsoleMode, SetConsoleMode};
-use super::c::GetConsoleScreenBufferInfo;
-
-fn invalid_encoding() -> IoError {
-    IoError {
-        kind: old_io::InvalidInput,
-        desc: "text was not valid unicode",
-        detail: None,
-    }
-}
-
-pub fn is_tty(fd: c_int) -> bool {
-    let mut out: DWORD = 0;
-    // If this function doesn't return an error, then fd is a TTY
-    match unsafe { GetConsoleMode(get_osfhandle(fd) as HANDLE,
-                                  &mut out as LPDWORD) } {
-        0 => false,
-        _ => true,
-    }
-}
-
-pub struct TTY {
-    closeme: bool,
-    handle: HANDLE,
-    utf8: MemReader,
-}
-
-impl TTY {
-    pub fn new(fd: c_int) -> IoResult<TTY> {
-        if is_tty(fd) {
-            // If the file descriptor is one of stdin, stderr, or stdout
-            // then it should not be closed by us
-            let closeme = match fd {
-                0...2 => false,
-                _ => true,
-            };
-            let handle = unsafe { get_osfhandle(fd) as HANDLE };
-            Ok(TTY {
-                handle: handle,
-                utf8: MemReader::new(Vec::new()),
-                closeme: closeme,
-            })
-        } else {
-            Err(IoError {
-                kind: old_io::MismatchedFileTypeForOperation,
-                desc: "invalid handle provided to function",
-                detail: None,
-            })
-        }
-    }
-
-    pub fn read(&mut self, buf: &mut [u8]) -> IoResult<usize> {
-        // Read more if the buffer is empty
-        if self.utf8.eof() {
-            let mut utf16: Vec<u16> = repeat(0u16).take(0x1000).collect();
-            let mut num: DWORD = 0;
-            match unsafe { ReadConsoleW(self.handle,
-                                         utf16.as_mut_ptr() as LPVOID,
-                                         utf16.len() as u32,
-                                         &mut num as LPDWORD,
-                                         ptr::null_mut()) } {
-                0 => return Err(super::last_error()),
-                _ => (),
-            };
-            utf16.truncate(num as usize);
-            let utf8 = match String::from_utf16(&utf16) {
-                Ok(utf8) => utf8.into_bytes(),
-                Err(..) => return Err(invalid_encoding()),
-            };
-            self.utf8 = MemReader::new(utf8);
-        }
-        // MemReader shouldn't error here since we just filled it
-        Ok(self.utf8.read(buf).unwrap())
-    }
-
-    pub fn write(&mut self, buf: &[u8]) -> IoResult<()> {
-        let utf16 = match from_utf8(buf).ok() {
-            Some(utf8) => {
-                utf8.utf16_units().collect::<Vec<u16>>()
-            }
-            None => return Err(invalid_encoding()),
-        };
-        let mut num: DWORD = 0;
-        match unsafe { WriteConsoleW(self.handle,
-                                     utf16.as_ptr() as LPCVOID,
-                                     utf16.len() as u32,
-                                     &mut num as LPDWORD,
-                                     ptr::null_mut()) } {
-            0 => Err(super::last_error()),
-            _ => Ok(()),
-        }
-    }
-
-    pub fn set_raw(&mut self, raw: bool) -> IoResult<()> {
-        // FIXME
-        // Somebody needs to decide on which of these flags we want
-        match unsafe { SetConsoleMode(self.handle,
-            match raw {
-                true => 0,
-                false => ENABLE_ECHO_INPUT | ENABLE_EXTENDED_FLAGS |
-                         ENABLE_INSERT_MODE | ENABLE_LINE_INPUT |
-                         ENABLE_PROCESSED_INPUT | ENABLE_QUICK_EDIT_MODE,
-            }) } {
-            0 => Err(super::last_error()),
-            _ => Ok(()),
-        }
-    }
-
-    pub fn get_winsize(&mut self) -> IoResult<(isize, isize)> {
-        let mut info: CONSOLE_SCREEN_BUFFER_INFO = unsafe { mem::zeroed() };
-        match unsafe { GetConsoleScreenBufferInfo(self.handle, &mut info as *mut _) } {
-            0 => Err(super::last_error()),
-            _ => Ok(((info.srWindow.Right + 1 - info.srWindow.Left) as isize,
-                     (info.srWindow.Bottom + 1 - info.srWindow.Top) as isize)),
-        }
-    }
-}
-
-impl Drop for TTY {
-    fn drop(&mut self) {
-        if self.closeme {
-            // Nobody cares about the return value
-            let _ = unsafe { CloseHandle(self.handle) };
-        }
-    }
-}
diff --git a/src/libstd/sys/windows/udp.rs b/src/libstd/sys/windows/udp.rs
deleted file mode 100644
index 50f8fb828ad..00000000000
--- a/src/libstd/sys/windows/udp.rs
+++ /dev/null
@@ -1,11 +0,0 @@
-// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
-// file at the top-level directory of this distribution and at
-// http://rust-lang.org/COPYRIGHT.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-pub use sys_common::net::UdpSocket;