diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7e7abf98f2..c9775263b5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -17,6 +17,8 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 
   ioctl_read_bad!(tcgets, libc::TCGETS, libc::termios);
   ```
+- Implemented `Clone`, `Copy`, `Debug`, `Eq`, `Hash`, and `PartialEq` for most
+  types that support them. ([#1035](https://github.com/nix-rust/nix/pull/1035))
 
 ### Changed
 - Minimum supported Rust version is now 1.25.0 
diff --git a/src/dir.rs b/src/dir.rs
index 814e9e0c0b..d4fc43a4d0 100644
--- a/src/dir.rs
+++ b/src/dir.rs
@@ -3,7 +3,7 @@ use errno::Errno;
 use fcntl::{self, OFlag};
 use libc;
 use std::os::unix::io::{AsRawFd, IntoRawFd, RawFd};
-use std::{ffi, fmt, ptr};
+use std::{ffi, ptr};
 use sys;
 
 #[cfg(target_os = "linux")]
@@ -25,6 +25,7 @@ use libc::{dirent, readdir_r};
 ///    * returns entries for `.` (current directory) and `..` (parent directory).
 ///    * returns entries' names as a `CStr` (no allocation or conversion beyond whatever libc
 ///      does).
+#[derive(Clone, Debug, Eq, Hash, PartialEq)]
 pub struct Dir(
     // This could be ptr::NonNull once nix requires Rust 1.25.
     *mut libc::DIR
@@ -82,21 +83,13 @@ impl AsRawFd for Dir {
     }
 }
 
-impl fmt::Debug for Dir {
-    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        f.debug_struct("Dir")
-            .field("fd", &self.as_raw_fd())
-            .finish()
-    }
-}
-
 impl Drop for Dir {
     fn drop(&mut self) {
         unsafe { libc::closedir(self.0) };
     }
 }
 
-#[derive(Debug)]
+#[derive(Debug, Eq, Hash, PartialEq)]
 pub struct Iter<'d>(&'d mut Dir);
 
 impl<'d> Iterator for Iter<'d> {
@@ -132,10 +125,10 @@ impl<'d> Drop for Iter<'d> {
 /// A directory entry, similar to `std::fs::DirEntry`.
 ///
 /// Note that unlike the std version, this may represent the `.` or `..` entries.
-#[derive(Copy, Clone)]
+#[derive(Copy, Clone, Debug, Eq, Hash, PartialEq)]
 pub struct Entry(dirent);
 
-#[derive(Copy, Clone, Debug, Eq, PartialEq)]
+#[derive(Copy, Clone, Debug, Eq, Hash, PartialEq)]
 pub enum Type {
     Fifo,
     CharacterDevice,
@@ -198,13 +191,3 @@ impl Entry {
         }
     }
 }
-
-impl fmt::Debug for Entry {
-    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        f.debug_struct("Entry")
-            .field("ino", &self.ino())
-            .field("file_name", &self.file_name())
-            .field("file_type", &self.file_type())
-            .finish()
-    }
-}
diff --git a/src/fcntl.rs b/src/fcntl.rs
index 40f4cf9405..6da62d87ba 100644
--- a/src/fcntl.rs
+++ b/src/fcntl.rs
@@ -214,7 +214,7 @@ libc_bitflags!(
     }
 );
 
-#[allow(missing_debug_implementations)]
+#[derive(Debug, Eq, Hash, PartialEq)]
 pub enum FcntlArg<'a> {
     F_DUPFD(RawFd),
     F_DUPFD_CLOEXEC(RawFd),
@@ -277,8 +277,7 @@ pub fn fcntl(fd: RawFd, arg: FcntlArg) -> Result<c_int> {
     Errno::result(res)
 }
 
-#[derive(Clone, Copy)]
-#[allow(missing_debug_implementations)]
+#[derive(Clone, Copy, Debug, Eq, Hash, PartialEq)]
 pub enum FlockArg {
     LockShared,
     LockExclusive,
diff --git a/src/ifaddrs.rs b/src/ifaddrs.rs
index 61d36ff4cd..3ae39bea0d 100644
--- a/src/ifaddrs.rs
+++ b/src/ifaddrs.rs
@@ -15,7 +15,7 @@ use sys::socket::SockAddr;
 use net::if_::*;
 
 /// Describes a single address for an interface as returned by `getifaddrs`.
-#[derive(Clone, Eq, Hash, PartialEq, Debug)]
+#[derive(Clone, Debug, Eq, Hash, PartialEq)]
 pub struct InterfaceAddress {
     /// Name of the network interface
     pub interface_name: String,
diff --git a/src/lib.rs b/src/lib.rs
index ae3cc73413..e961acae1b 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -97,7 +97,7 @@ pub type Result<T> = result::Result<T, Error>;
 /// error has a corresponding errno (usually the one from the
 /// underlying OS) to which it can be mapped in addition to
 /// implementing other common traits.
-#[derive(Clone, Copy, Debug, PartialEq)]
+#[derive(Clone, Copy, Debug, Eq, PartialEq)]
 pub enum Error {
     Sys(Errno),
     InvalidPath,
diff --git a/src/mqueue.rs b/src/mqueue.rs
index 87be65321b..b958b71cdd 100644
--- a/src/mqueue.rs
+++ b/src/mqueue.rs
@@ -29,22 +29,11 @@ libc_bitflags!{
 }
 
 #[repr(C)]
-#[derive(Clone, Copy)]
-#[allow(missing_debug_implementations)]
+#[derive(Clone, Copy, Debug, Eq, Hash, PartialEq)]
 pub struct MqAttr {
     mq_attr: libc::mq_attr,
 }
 
-impl PartialEq<MqAttr> for MqAttr {
-    fn eq(&self, other: &MqAttr) -> bool {
-        let self_attr = self.mq_attr;
-        let other_attr = other.mq_attr;
-        self_attr.mq_flags == other_attr.mq_flags && self_attr.mq_maxmsg == other_attr.mq_maxmsg &&
-        self_attr.mq_msgsize == other_attr.mq_msgsize &&
-        self_attr.mq_curmsgs == other_attr.mq_curmsgs
-    }
-}
-
 impl MqAttr {
     pub fn new(mq_flags: c_long,
                mq_maxmsg: c_long,
diff --git a/src/poll.rs b/src/poll.rs
index 160b5bc605..c603611e31 100644
--- a/src/poll.rs
+++ b/src/poll.rs
@@ -4,7 +4,6 @@ use sys::time::TimeSpec;
 #[cfg(any(target_os = "android", target_os = "dragonfly", target_os = "freebsd", target_os = "linux"))]
 use sys::signal::SigSet;
 use std::os::unix::io::RawFd;
-use std::fmt;
 
 use libc;
 use Result;
@@ -19,7 +18,7 @@ use errno::Errno;
 /// After a call to `poll` or `ppoll`, the events that occured can be
 /// retrieved by calling [`revents()`](#method.revents) on the `PollFd`.
 #[repr(C)]
-#[derive(Clone, Copy)]
+#[derive(Clone, Copy, Debug, Eq, Hash, PartialEq)]
 pub struct PollFd {
     pollfd: libc::pollfd,
 }
@@ -43,23 +42,6 @@ impl PollFd {
     }
 }
 
-impl fmt::Debug for PollFd {
-    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        let pfd = self.pollfd;
-        let mut ds = f.debug_struct("PollFd");
-        ds.field("fd", &pfd.fd);
-        match PollFlags::from_bits(pfd.events) {
-            None => ds.field("events", &pfd.events),
-            Some(ef) => ds.field("events", &ef),
-        };
-        match PollFlags::from_bits(pfd.revents) {
-            None => ds.field("revents", &pfd.revents),
-            Some(ef) => ds.field("revents", &ef),
-        };
-        ds.finish()
-    }
-}
-
 libc_bitflags! {
     /// These flags define the different events that can be monitored by `poll` and `ppoll`
     pub struct PollFlags: libc::c_short {
diff --git a/src/pty.rs b/src/pty.rs
index 41bd51b68a..db012d8158 100644
--- a/src/pty.rs
+++ b/src/pty.rs
@@ -18,8 +18,7 @@ use errno::Errno;
 ///
 /// This is returned by `openpty`.  Note that this type does *not* implement `Drop`, so the user
 /// must manually close the file descriptors.
-#[derive(Clone, Copy)]
-#[allow(missing_debug_implementations)]
+#[derive(Clone, Copy, Debug, Eq, Hash, PartialEq)]
 pub struct OpenptyResult {
     /// The master port in a virtual pty pair
     pub master: RawFd,
@@ -45,7 +44,7 @@ pub struct ForkptyResult {
 /// While this datatype is a thin wrapper around `RawFd`, it enforces that the available PTY
 /// functions are given the correct file descriptor. Additionally this type implements `Drop`,
 /// so that when it's consumed or goes out of scope, it's automatically cleaned-up.
-#[derive(Debug)]
+#[derive(Clone, Debug, Eq, Hash, PartialEq)]
 pub struct PtyMaster(RawFd);
 
 impl AsRawFd for PtyMaster {
diff --git a/src/sched.rs b/src/sched.rs
index d381cbb5bb..c4e6ca7a1a 100644
--- a/src/sched.rs
+++ b/src/sched.rs
@@ -39,8 +39,7 @@ libc_bitflags!{
 pub type CloneCb<'a> = Box<FnMut() -> isize + 'a>;
 
 #[repr(C)]
-#[derive(Clone, Copy)]
-#[allow(missing_debug_implementations)]
+#[derive(Clone, Copy, Debug, Eq, Hash, PartialEq)]
 pub struct CpuSet {
     cpu_set: libc::cpu_set_t,
 }
diff --git a/src/sys/aio.rs b/src/sys/aio.rs
index c54c2e316e..71ff3129c1 100644
--- a/src/sys/aio.rs
+++ b/src/sys/aio.rs
@@ -80,7 +80,7 @@ libc_enum! {
 /// Return values for [`AioCb::cancel`](struct.AioCb.html#method.cancel) and
 /// [`aio_cancel_all`](fn.aio_cancel_all.html)
 #[repr(i32)]
-#[derive(Clone, Copy, Debug, PartialEq)]
+#[derive(Clone, Copy, Debug, Eq, Hash, PartialEq)]
 pub enum AioCancelStat {
     /// All outstanding requests were canceled
     AioCanceled = libc::AIO_CANCELED,
@@ -133,6 +133,7 @@ impl<'a> Debug for Buffer<'a> {
 ///
 /// The basic structure used by all aio functions.  Each `AioCb` represents one
 /// I/O request.
+#[derive(Debug)]
 pub struct AioCb<'a> {
     aiocb: libc::aiocb,
     /// Tracks whether the buffer pointed to by `libc::aiocb.aio_buf` is mutable
@@ -1018,22 +1019,6 @@ pub fn aio_suspend(list: &[&AioCb], timeout: Option<TimeSpec>) -> Result<()> {
     }).map(drop)
 }
 
-impl<'a> Debug for AioCb<'a> {
-    fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
-        fmt.debug_struct("AioCb")
-            .field("aio_fildes", &self.aiocb.aio_fildes)
-            .field("aio_offset", &self.aiocb.aio_offset)
-            .field("aio_buf", &self.aiocb.aio_buf)
-            .field("aio_nbytes", &self.aiocb.aio_nbytes)
-            .field("aio_lio_opcode", &self.aiocb.aio_lio_opcode)
-            .field("aio_reqprio", &self.aiocb.aio_reqprio)
-            .field("aio_sigevent", &SigEvent::from(&self.aiocb.aio_sigevent))
-            .field("mutable", &self.mutable)
-            .field("in_progress", &self.in_progress)
-            .finish()
-    }
-}
-
 impl<'a> Drop for AioCb<'a> {
     /// If the `AioCb` has no remaining state in the kernel, just drop it.
     /// Otherwise, dropping constitutes a resource leak, which is an error
diff --git a/src/sys/epoll.rs b/src/sys/epoll.rs
index 3ed1dd7240..fef6f4e3ec 100644
--- a/src/sys/epoll.rs
+++ b/src/sys/epoll.rs
@@ -42,8 +42,7 @@ libc_bitflags!{
     }
 }
 
-#[allow(missing_debug_implementations)]
-#[derive(Clone, Copy)]
+#[derive(Clone, Copy, Debug, Eq, Hash, PartialEq)]
 #[repr(C)]
 pub struct EpollEvent {
     event: libc::epoll_event,
diff --git a/src/sys/event.rs b/src/sys/event.rs
index f1eaa0d155..8cd7372f88 100644
--- a/src/sys/event.rs
+++ b/src/sys/event.rs
@@ -12,9 +12,8 @@ use std::ptr;
 use std::mem;
 
 // Redefine kevent in terms of programmer-friendly enums and bitfields.
-#[derive(Clone, Copy)]
 #[repr(C)]
-#[allow(missing_debug_implementations)]
+#[derive(Clone, Copy, Debug, Eq, Hash, PartialEq)]
 pub struct KEvent {
     kevent: libc::kevent,
 }
diff --git a/src/sys/quota.rs b/src/sys/quota.rs
index 14c0462929..8946fca221 100644
--- a/src/sys/quota.rs
+++ b/src/sys/quota.rs
@@ -96,8 +96,7 @@ libc_bitflags!(
 /// Wrapper type for `if_dqblk`
 // FIXME: Change to repr(transparent)
 #[repr(C)]
-#[derive(Clone, Copy)]
-#[allow(missing_debug_implementations)]
+#[derive(Clone, Copy, Debug, Eq, Hash, PartialEq)]
 pub struct Dqblk(libc::dqblk);
 
 impl Default for Dqblk {
diff --git a/src/sys/select.rs b/src/sys/select.rs
index 95b6b148f6..1b518e29f6 100644
--- a/src/sys/select.rs
+++ b/src/sys/select.rs
@@ -11,8 +11,7 @@ pub use libc::FD_SETSIZE;
 
 // FIXME: Change to repr(transparent) once it's stable
 #[repr(C)]
-#[derive(Clone, Copy)]
-#[allow(missing_debug_implementations)]
+#[derive(Clone, Copy, Debug, Eq, Hash, PartialEq)]
 pub struct FdSet(libc::fd_set);
 
 impl FdSet {
diff --git a/src/sys/sendfile.rs b/src/sys/sendfile.rs
index 1190518d8b..a47d8962f7 100644
--- a/src/sys/sendfile.rs
+++ b/src/sys/sendfile.rs
@@ -38,7 +38,7 @@ cfg_if! {
                  target_os = "macos"))] {
         use sys::uio::IoVec;
 
-        #[allow(missing_debug_implementations)]
+        #[derive(Clone, Debug, Eq, Hash, PartialEq)]
         struct SendfileHeaderTrailer<'a>(
             libc::sf_hdtr,
             Option<Vec<IoVec<&'a [u8]>>>,
diff --git a/src/sys/signal.rs b/src/sys/signal.rs
index a49b273f8a..1013a77fd4 100644
--- a/src/sys/signal.rs
+++ b/src/sys/signal.rs
@@ -265,8 +265,7 @@ const SIGNALS: [Signal; 31] = [
 
 pub const NSIG: libc::c_int = 32;
 
-#[derive(Clone, Copy)]
-#[allow(missing_debug_implementations)]
+#[derive(Clone, Copy, Debug, Eq, Hash, PartialEq)]
 pub struct SignalIterator {
     next: usize,
 }
@@ -328,8 +327,7 @@ libc_enum! {
     }
 }
 
-#[derive(Clone, Copy)]
-#[allow(missing_debug_implementations)]
+#[derive(Clone, Copy, Debug, Eq, Hash, PartialEq)]
 pub struct SigSet {
     sigset: libc::sigset_t
 }
@@ -427,7 +425,7 @@ impl AsRef<libc::sigset_t> for SigSet {
 
 /// A signal handler.
 #[allow(unknown_lints)]
-#[derive(Debug, Clone, Copy, PartialEq)]
+#[derive(Clone, Copy, Debug, Eq, Hash, PartialEq)]
 pub enum SigHandler {
     /// Default signal handling.
     SigDfl,
@@ -441,8 +439,7 @@ pub enum SigHandler {
 }
 
 /// Action to take on receipt of a signal. Corresponds to `sigaction`.
-#[derive(Clone, Copy)]
-#[allow(missing_debug_implementations)]
+#[derive(Clone, Copy, Debug, Eq, Hash, PartialEq)]
 pub struct SigAction {
     sigaction: libc::sigaction
 }
@@ -683,7 +680,7 @@ pub type type_of_thread_id = libc::pid_t;
 // sigval is actually a union of a int and a void*.  But it's never really used
 // as a pointer, because neither libc nor the kernel ever dereference it.  nix
 // therefore presents it as an intptr_t, which is how kevent uses it.
-#[derive(Clone, Copy, Debug, PartialEq)]
+#[derive(Clone, Copy, Debug, Eq, Hash, PartialEq)]
 pub enum SigevNotify {
     /// No notification will be delivered
     SigevNone,
@@ -710,7 +707,6 @@ mod sigevent {
     use libc;
     use std::mem;
     use std::ptr;
-    use std::fmt::{self, Debug};
     use super::SigevNotify;
     #[cfg(any(target_os = "freebsd", target_os = "linux"))]
     use super::type_of_thread_id;
@@ -718,7 +714,7 @@ mod sigevent {
     /// Used to request asynchronous notification of the completion of certain
     /// events, such as POSIX AIO and timers.
     #[repr(C)]
-    #[derive(Clone, Copy)]
+    #[derive(Clone, Copy, Debug, Eq, Hash, PartialEq)]
     pub struct SigEvent {
         sigevent: libc::sigevent
     }
@@ -788,28 +784,6 @@ mod sigevent {
         }
     }
 
-    impl Debug for SigEvent {
-        #[cfg(any(target_os = "freebsd", target_os = "linux"))]
-        fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
-            fmt.debug_struct("SigEvent")
-                .field("sigev_notify", &self.sigevent.sigev_notify)
-                .field("sigev_signo", &self.sigevent.sigev_signo)
-                .field("sigev_value", &self.sigevent.sigev_value.sival_ptr)
-                .field("sigev_notify_thread_id",
-                        &self.sigevent.sigev_notify_thread_id)
-                .finish()
-        }
-
-        #[cfg(not(any(target_os = "freebsd", target_os = "linux")))]
-        fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
-            fmt.debug_struct("SigEvent")
-                .field("sigev_notify", &self.sigevent.sigev_notify)
-                .field("sigev_signo", &self.sigevent.sigev_signo)
-                .field("sigev_value", &self.sigevent.sigev_value.sival_ptr)
-                .finish()
-        }
-    }
-
     impl<'a> From<&'a libc::sigevent> for SigEvent {
         fn from(sigevent: &libc::sigevent) -> Self {
             SigEvent{ sigevent: *sigevent }
diff --git a/src/sys/socket/addr.rs b/src/sys/socket/addr.rs
index fc24bd792b..5f02945a6d 100644
--- a/src/sys/socket/addr.rs
+++ b/src/sys/socket/addr.rs
@@ -2,7 +2,7 @@ use super::sa_family_t;
 use {Error, Result, NixPath};
 use errno::Errno;
 use libc;
-use std::{fmt, hash, mem, net, ptr, slice};
+use std::{fmt, mem, net, ptr, slice};
 use std::ffi::OsStr;
 use std::path::Path;
 use std::os::unix::ffi::OsStrExt;
@@ -245,7 +245,7 @@ impl AddressFamily {
     }
 }
 
-#[derive(Copy)]
+#[derive(Clone, Copy, Debug, Eq, Hash, PartialEq)]
 pub enum InetAddr {
     V4(libc::sockaddr_in),
     V6(libc::sockaddr_in6),
@@ -331,52 +331,6 @@ impl InetAddr {
     }
 }
 
-impl PartialEq for InetAddr {
-    fn eq(&self, other: &InetAddr) -> bool {
-        match (*self, *other) {
-            (InetAddr::V4(ref a), InetAddr::V4(ref b)) => {
-                a.sin_port == b.sin_port &&
-                    a.sin_addr.s_addr == b.sin_addr.s_addr
-            }
-            (InetAddr::V6(ref a), InetAddr::V6(ref b)) => {
-                a.sin6_port == b.sin6_port &&
-                    a.sin6_addr.s6_addr == b.sin6_addr.s6_addr &&
-                    a.sin6_flowinfo == b.sin6_flowinfo &&
-                    a.sin6_scope_id == b.sin6_scope_id
-            }
-            _ => false,
-        }
-    }
-}
-
-impl Eq for InetAddr {
-}
-
-impl hash::Hash for InetAddr {
-    fn hash<H: hash::Hasher>(&self, s: &mut H) {
-        match *self {
-            InetAddr::V4(ref a) => {
-                ( a.sin_family,
-                  a.sin_port,
-                  a.sin_addr.s_addr ).hash(s)
-            }
-            InetAddr::V6(ref a) => {
-                ( a.sin6_family,
-                  a.sin6_port,
-                  &a.sin6_addr.s6_addr,
-                  a.sin6_flowinfo,
-                  a.sin6_scope_id ).hash(s)
-            }
-        }
-    }
-}
-
-impl Clone for InetAddr {
-    fn clone(&self) -> InetAddr {
-        *self
-    }
-}
-
 impl fmt::Display for InetAddr {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
         match *self {
@@ -386,18 +340,12 @@ impl fmt::Display for InetAddr {
     }
 }
 
-impl fmt::Debug for InetAddr {
-    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        fmt::Display::fmt(self, f)
-    }
-}
-
 /*
  *
  * ===== IpAddr =====
  *
  */
-#[derive(Clone, Copy)]
+#[derive(Clone, Copy, Debug, Eq, Hash, PartialEq)]
 pub enum IpAddr {
     V4(Ipv4Addr),
     V6(Ipv6Addr),
@@ -442,19 +390,13 @@ impl fmt::Display for IpAddr {
     }
 }
 
-impl fmt::Debug for IpAddr {
-    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        fmt::Display::fmt(self, f)
-    }
-}
-
 /*
  *
  * ===== Ipv4Addr =====
  *
  */
 
-#[derive(Copy)]
+#[derive(Clone, Copy, Debug, Eq, Hash, PartialEq)]
 pub struct Ipv4Addr(pub libc::in_addr);
 
 impl Ipv4Addr {
@@ -487,28 +429,6 @@ impl Ipv4Addr {
     }
 }
 
-impl PartialEq for Ipv4Addr {
-    fn eq(&self, other: &Ipv4Addr) -> bool {
-        self.0.s_addr == other.0.s_addr
-    }
-}
-
-impl Eq for Ipv4Addr {
-}
-
-impl hash::Hash for Ipv4Addr {
-    fn hash<H: hash::Hasher>(&self, s: &mut H) {
-        let saddr = self.0.s_addr;
-        saddr.hash(s)
-    }
-}
-
-impl Clone for Ipv4Addr {
-    fn clone(&self) -> Ipv4Addr {
-        *self
-    }
-}
-
 impl fmt::Display for Ipv4Addr {
     fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
         let octets = self.octets();
@@ -516,19 +436,13 @@ impl fmt::Display for Ipv4Addr {
     }
 }
 
-impl fmt::Debug for Ipv4Addr {
-    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        fmt::Display::fmt(self, f)
-    }
-}
-
 /*
  *
  * ===== Ipv6Addr =====
  *
  */
 
-#[derive(Clone, Copy)]
+#[derive(Clone, Copy, Debug, Eq, Hash, PartialEq)]
 pub struct Ipv6Addr(pub libc::in6_addr);
 
 // Note that IPv6 addresses are stored in big endian order on all architectures.
@@ -576,12 +490,6 @@ impl fmt::Display for Ipv6Addr {
     }
 }
 
-impl fmt::Debug for Ipv6Addr {
-    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        fmt::Display::fmt(self, f)
-    }
-}
-
 /*
  *
  * ===== UnixAddr =====
@@ -596,7 +504,7 @@ impl fmt::Debug for Ipv6Addr {
 /// does not require that `sun_len` include the terminating null even for normal
 /// sockets.  Note that the actual sockaddr length is greater by
 /// `offset_of!(libc::sockaddr_un, sun_path)`
-#[derive(Copy)]
+#[derive(Clone, Copy, Debug, Eq, Hash, PartialEq)]
 pub struct UnixAddr(pub libc::sockaddr_un, pub usize);
 
 impl UnixAddr {
@@ -688,27 +596,6 @@ impl UnixAddr {
     }
 }
 
-impl PartialEq for UnixAddr {
-    fn eq(&self, other: &UnixAddr) -> bool {
-        self.sun_path() == other.sun_path()
-    }
-}
-
-impl Eq for UnixAddr {
-}
-
-impl hash::Hash for UnixAddr {
-    fn hash<H: hash::Hasher>(&self, s: &mut H) {
-        ( self.0.sun_family, self.sun_path() ).hash(s)
-    }
-}
-
-impl Clone for UnixAddr {
-    fn clone(&self) -> UnixAddr {
-        *self
-    }
-}
-
 impl fmt::Display for UnixAddr {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
         if self.1 == 0 {
@@ -722,12 +609,6 @@ impl fmt::Display for UnixAddr {
     }
 }
 
-impl fmt::Debug for UnixAddr {
-    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        fmt::Display::fmt(self, f)
-    }
-}
-
 /*
  *
  * ===== Sock addr =====
@@ -735,7 +616,7 @@ impl fmt::Debug for UnixAddr {
  */
 
 /// Represents a socket address
-#[derive(Copy, Debug)]
+#[derive(Clone, Copy, Debug, Eq, Hash, PartialEq)]
 pub enum SockAddr {
     Inet(InetAddr),
     Unix(UnixAddr),
@@ -883,68 +764,6 @@ impl SockAddr {
     }
 }
 
-impl PartialEq for SockAddr {
-    fn eq(&self, other: &SockAddr) -> bool {
-        match (*self, *other) {
-            (SockAddr::Inet(ref a), SockAddr::Inet(ref b)) => {
-                a == b
-            }
-            (SockAddr::Unix(ref a), SockAddr::Unix(ref b)) => {
-                a == b
-            }
-            #[cfg(any(target_os = "android", target_os = "linux"))]
-            (SockAddr::Netlink(ref a), SockAddr::Netlink(ref b)) => {
-                a == b
-            }
-            #[cfg(any(target_os = "android",
-                      target_os = "dragonfly",
-                      target_os = "freebsd",
-                      target_os = "ios",
-                      target_os = "linux",
-                      target_os = "macos",
-                      target_os = "netbsd",
-                      target_os = "openbsd"))]
-            (SockAddr::Link(ref a), SockAddr::Link(ref b)) => {
-                a == b
-            }
-            _ => false,
-        }
-    }
-}
-
-impl Eq for SockAddr {
-}
-
-impl hash::Hash for SockAddr {
-    fn hash<H: hash::Hasher>(&self, s: &mut H) {
-        match *self {
-            SockAddr::Inet(ref a) => a.hash(s),
-            SockAddr::Unix(ref a) => a.hash(s),
-            #[cfg(any(target_os = "android", target_os = "linux"))]
-            SockAddr::Netlink(ref a) => a.hash(s),
-            #[cfg(any(target_os = "android", target_os = "linux"))]
-            SockAddr::Alg(ref a) => a.hash(s),
-            #[cfg(any(target_os = "ios", target_os = "macos"))]
-            SockAddr::SysControl(ref a) => a.hash(s),
-            #[cfg(any(target_os = "android",
-                      target_os = "dragonfly",
-                      target_os = "freebsd",
-                      target_os = "ios",
-                      target_os = "linux",
-                      target_os = "macos",
-                      target_os = "netbsd",
-                      target_os = "openbsd"))]
-            SockAddr::Link(ref ether_addr) => ether_addr.hash(s)
-        }
-    }
-}
-
-impl Clone for SockAddr {
-    fn clone(&self) -> SockAddr {
-        *self
-    }
-}
-
 impl fmt::Display for SockAddr {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
         match *self {
@@ -974,30 +793,10 @@ pub mod netlink {
     use ::sys::socket::addr::AddressFamily;
     use libc::{sa_family_t, sockaddr_nl};
     use std::{fmt, mem};
-    use std::hash::{Hash, Hasher};
 
-    #[derive(Copy, Clone)]
+    #[derive(Copy, Clone, Debug, Eq, Hash, PartialEq)]
     pub struct NetlinkAddr(pub sockaddr_nl);
 
-    // , PartialEq, Eq, Debug, Hash
-    impl PartialEq for NetlinkAddr {
-        fn eq(&self, other: &Self) -> bool {
-            let (inner, other) = (self.0, other.0);
-            (inner.nl_family, inner.nl_pid, inner.nl_groups) ==
-            (other.nl_family, other.nl_pid, other.nl_groups)
-        }
-    }
-
-    impl Eq for NetlinkAddr {}
-
-    impl Hash for NetlinkAddr {
-        fn hash<H: Hasher>(&self, s: &mut H) {
-            let inner = self.0;
-            (inner.nl_family, inner.nl_pid, inner.nl_groups).hash(s);
-        }
-    }
-
-
     impl NetlinkAddr {
         pub fn new(pid: u32, groups: u32) -> NetlinkAddr {
             let mut addr: sockaddr_nl = unsafe { mem::zeroed() };
@@ -1022,12 +821,6 @@ pub mod netlink {
             write!(f, "pid: {} groups: {}", self.pid(), self.groups())
         }
     }
-
-    impl fmt::Debug for NetlinkAddr {
-        fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-            fmt::Display::fmt(self, f)
-        }
-    }
 }
 
 #[cfg(any(target_os = "android", target_os = "linux"))]
@@ -1098,11 +891,13 @@ pub mod sys_control {
     use ::sys::socket::addr::AddressFamily;
     use libc::{self, c_uchar};
     use std::{fmt, mem};
-    use std::hash::{Hash, Hasher};
     use std::os::unix::io::RawFd;
     use {Errno, Error, Result};
 
+    // FIXME: Move type into `libc`
     #[repr(C)]
+    #[derive(Clone, Copy)]
+    #[allow(missing_debug_implementations)]
     pub struct ctl_ioc_info {
         pub ctl_id: u32,
         pub ctl_name: [c_uchar; MAX_KCTL_NAME],
@@ -1114,28 +909,10 @@ pub mod sys_control {
 
     ioctl_readwrite!(ctl_info, CTL_IOC_MAGIC, CTL_IOC_INFO, ctl_ioc_info);
 
-    #[derive(Copy, Clone)]
     #[repr(C)]
+    #[derive(Clone, Copy, Debug, Eq, Hash, PartialEq)]
     pub struct SysControlAddr(pub libc::sockaddr_ctl);
 
-    impl PartialEq for SysControlAddr {
-        fn eq(&self, other: &Self) -> bool {
-            let (inner, other) = (self.0, other.0);
-            (inner.sc_id, inner.sc_unit) ==
-            (other.sc_id, other.sc_unit)
-        }
-    }
-
-    impl Eq for SysControlAddr {}
-
-    impl Hash for SysControlAddr {
-        fn hash<H: Hasher>(&self, s: &mut H) {
-            let inner = self.0;
-            (inner.sc_id, inner.sc_unit).hash(s);
-        }
-    }
-
-
     impl SysControlAddr {
         pub fn new(id: u32, unit: u32) -> SysControlAddr {
             let addr = libc::sockaddr_ctl {
@@ -1178,27 +955,15 @@ pub mod sys_control {
             fmt::Debug::fmt(self, f)
         }
     }
-
-    impl fmt::Debug for SysControlAddr {
-        fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-            f.debug_struct("SysControlAddr")
-                .field("sc_len", &self.0.sc_len)
-                .field("sc_family", &self.0.sc_family)
-                .field("ss_sysaddr", &self.0.ss_sysaddr)
-                .field("sc_id", &self.0.sc_id)
-                .field("sc_unit", &self.0.sc_unit)
-                .finish()
-        }
-    }
 }
 
 
 #[cfg(any(target_os = "android", target_os = "linux"))]
 mod datalink {
-    use super::{libc, hash, fmt, AddressFamily};
+    use super::{libc, fmt, AddressFamily};
 
     /// Hardware Address
-    #[derive(Clone, Copy)]
+    #[derive(Clone, Copy, Debug, Eq, Hash, PartialEq)]
     pub struct LinkAddr(pub libc::sockaddr_ll);
 
     impl LinkAddr {
@@ -1246,26 +1011,6 @@ mod datalink {
         }
     }
 
-    impl Eq for LinkAddr {}
-
-    impl PartialEq for LinkAddr {
-        fn eq(&self, other: &Self) -> bool {
-            let (a, b) = (self.0, other.0);
-            (a.sll_family, a.sll_protocol, a.sll_ifindex, a.sll_hatype,
-                a.sll_pkttype, a.sll_halen, a.sll_addr) ==
-            (b.sll_family, b.sll_protocol, b.sll_ifindex, b.sll_hatype,
-                b.sll_pkttype, b.sll_halen, b.sll_addr)
-        }
-    }
-
-    impl hash::Hash for LinkAddr {
-        fn hash<H: hash::Hasher>(&self, s: &mut H) {
-            let a = self.0;
-            (a.sll_family, a.sll_protocol, a.sll_ifindex, a.sll_hatype,
-                a.sll_pkttype, a.sll_halen, a.sll_addr).hash(s);
-        }
-    }
-
     impl fmt::Display for LinkAddr {
         fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
             let addr = self.addr();
@@ -1278,12 +1023,6 @@ mod datalink {
                 addr[5])
         }
     }
-
-    impl fmt::Debug for LinkAddr {
-        fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-            fmt::Display::fmt(self, f)
-        }
-    }
 }
 
 #[cfg(any(target_os = "dragonfly",
@@ -1293,10 +1032,10 @@ mod datalink {
           target_os = "netbsd",
           target_os = "openbsd"))]
 mod datalink {
-    use super::{libc, hash, fmt, AddressFamily};
+    use super::{libc, fmt, AddressFamily};
 
     /// Hardware Address
-    #[derive(Clone, Copy)]
+    #[derive(Clone, Copy, Debug, Eq, Hash, PartialEq)]
     pub struct LinkAddr(pub libc::sockaddr_dl);
 
     impl LinkAddr {
@@ -1368,52 +1107,6 @@ mod datalink {
         }
     }
 
-    impl Eq for LinkAddr {}
-
-    impl PartialEq for LinkAddr {
-        #[cfg(any(target_os = "freebsd",
-                  target_os = "ios",
-                  target_os = "macos",
-                  target_os = "netbsd",
-                  target_os = "openbsd"))]
-        fn eq(&self, other: &Self) -> bool {
-            let (a, b) = (self.0, other.0);
-            (a.sdl_len, a.sdl_family, a.sdl_index, a.sdl_type,
-                a.sdl_nlen, a.sdl_alen, a.sdl_slen, &a.sdl_data[..]) ==
-            (b.sdl_len, b.sdl_family, b.sdl_index, b.sdl_type,
-                b.sdl_nlen, b.sdl_alen, b.sdl_slen, &b.sdl_data[..])
-        }
-
-        #[cfg(target_os = "dragonfly")]
-        fn eq(&self, other: &Self) -> bool {
-            let (a, b) = (self.0, other.0);
-            (a.sdl_len, a.sdl_family, a.sdl_index, a.sdl_type, a.sdl_nlen,
-                a.sdl_alen, a.sdl_slen, a.sdl_data, a.sdl_rcf, a.sdl_route) ==
-            (b.sdl_len, b.sdl_family, b.sdl_index, b.sdl_type, b.sdl_nlen,
-                b.sdl_alen, b.sdl_slen, b.sdl_data, b.sdl_rcf, b.sdl_route)
-        }
-    }
-
-    impl hash::Hash for LinkAddr {
-        #[cfg(any(target_os = "freebsd",
-                  target_os = "ios",
-                  target_os = "macos",
-                  target_os = "netbsd",
-                  target_os = "openbsd"))]
-        fn hash<H: hash::Hasher>(&self, s: &mut H) {
-            let a = self.0;
-            (a.sdl_len, a.sdl_family, a.sdl_index, a.sdl_type,
-                a.sdl_nlen, a.sdl_alen, a.sdl_slen, &a.sdl_data[..]).hash(s);
-        }
-
-        #[cfg(target_os = "dragonfly")]
-        fn hash<H: hash::Hasher>(&self, s: &mut H) {
-            let a = self.0;
-            (a.sdl_len, a.sdl_family, a.sdl_index, a.sdl_type, a.sdl_nlen,
-                a.sdl_alen, a.sdl_slen, a.sdl_data, a.sdl_rcf, a.sdl_route).hash(s);
-        }
-    }
-
     impl fmt::Display for LinkAddr {
         fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
             let addr = self.addr();
@@ -1426,12 +1119,6 @@ mod datalink {
                 addr[5])
         }
     }
-
-    impl fmt::Debug for LinkAddr {
-        fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-            fmt::Display::fmt(self, f)
-        }
-    }
 }
 
 #[cfg(test)]
diff --git a/src/sys/socket/mod.rs b/src/sys/socket/mod.rs
index 0ba28358da..493ca1cf0b 100644
--- a/src/sys/socket/mod.rs
+++ b/src/sys/socket/mod.rs
@@ -5,7 +5,7 @@ use {Error, Result};
 use errno::Errno;
 use libc::{self, c_void, c_int, iovec, socklen_t, size_t,
         CMSG_FIRSTHDR, CMSG_NXTHDR, CMSG_DATA, CMSG_LEN};
-use std::{fmt, mem, ptr, slice};
+use std::{mem, ptr, slice};
 use std::os::unix::io::RawFd;
 use sys::time::TimeVal;
 use sys::uio::IoVec;
@@ -185,7 +185,7 @@ cfg_if! {
         ///
         /// This struct is used with the `SO_PEERCRED` ancillary message for UNIX sockets.
         #[repr(C)]
-        #[derive(Clone, Copy)]
+        #[derive(Clone, Copy, Debug, Eq, PartialEq)]
         pub struct UnixCredentials(libc::ucred);
 
         impl UnixCredentials {
@@ -205,13 +205,6 @@ cfg_if! {
             }
         }
 
-        impl PartialEq for UnixCredentials {
-            fn eq(&self, other: &Self) -> bool {
-                self.0.pid == other.0.pid && self.0.uid == other.0.uid && self.0.gid == other.0.gid
-            }
-        }
-        impl Eq for UnixCredentials {}
-
         impl From<libc::ucred> for UnixCredentials {
             fn from(cred: libc::ucred) -> Self {
                 UnixCredentials(cred)
@@ -223,16 +216,6 @@ cfg_if! {
                 self.0
             }
         }
-
-        impl fmt::Debug for UnixCredentials {
-            fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-                f.debug_struct("UnixCredentials")
-                    .field("pid", &self.0.pid)
-                    .field("uid", &self.0.uid)
-                    .field("gid", &self.0.gid)
-                    .finish()
-            }
-        }
     }
 }
 
@@ -240,7 +223,7 @@ cfg_if! {
 ///
 /// This is a wrapper type around `ip_mreq`.
 #[repr(C)]
-#[derive(Clone, Copy)]
+#[derive(Clone, Copy, Debug, Eq, PartialEq)]
 pub struct IpMembershipRequest(libc::ip_mreq);
 
 impl IpMembershipRequest {
@@ -255,32 +238,11 @@ impl IpMembershipRequest {
     }
 }
 
-impl PartialEq for IpMembershipRequest {
-    fn eq(&self, other: &Self) -> bool {
-        self.0.imr_multiaddr.s_addr == other.0.imr_multiaddr.s_addr
-            && self.0.imr_interface.s_addr == other.0.imr_interface.s_addr
-    }
-}
-impl Eq for IpMembershipRequest {}
-
-impl fmt::Debug for IpMembershipRequest {
-    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        let mref = &self.0.imr_multiaddr;
-        let maddr = mref.s_addr;
-        let iref = &self.0.imr_interface;
-        let ifaddr = iref.s_addr;
-        f.debug_struct("IpMembershipRequest")
-            .field("imr_multiaddr", &maddr)
-            .field("imr_interface", &ifaddr)
-            .finish()
-    }
-}
-
 /// Request for ipv6 multicast socket operations
 ///
 /// This is a wrapper type around `ipv6_mreq`.
 #[repr(C)]
-#[derive(Clone, Copy)]
+#[derive(Clone, Copy, Debug, Eq, PartialEq)]
 pub struct Ipv6MembershipRequest(libc::ipv6_mreq);
 
 impl Ipv6MembershipRequest {
@@ -293,23 +255,6 @@ impl Ipv6MembershipRequest {
     }
 }
 
-impl PartialEq for Ipv6MembershipRequest {
-    fn eq(&self, other: &Self) -> bool {
-        self.0.ipv6mr_multiaddr.s6_addr == other.0.ipv6mr_multiaddr.s6_addr &&
-            self.0.ipv6mr_interface == other.0.ipv6mr_interface
-    }
-}
-impl Eq for Ipv6MembershipRequest {}
-
-impl fmt::Debug for Ipv6MembershipRequest {
-    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        f.debug_struct("Ipv6MembershipRequest")
-            .field("ipv6mr_multiaddr", &self.0.ipv6mr_multiaddr.s6_addr)
-            .field("ipv6mr_interface", &self.0.ipv6mr_interface)
-            .finish()
-    }
-}
-
 cfg_if! {
     // Darwin and DragonFly BSD always align struct cmsghdr to 32-bit only.
     if #[cfg(any(target_os = "dragonfly", target_os = "ios", target_os = "macos"))] {
@@ -382,7 +327,7 @@ macro_rules! cmsg_space {
 /// let cmsg: CmsgSpace<([RawFd; 3], CmsgSpace<[RawFd; 2]>)> = CmsgSpace::new();
 /// ```
 #[repr(C)]
-#[allow(missing_debug_implementations)]
+#[derive(Clone, Copy, Debug, Eq, PartialEq)]
 pub struct CmsgSpace<T> {
     _hdr: cmsghdr,
     _pad: [align_of_cmsg_data; 0],
@@ -415,7 +360,7 @@ impl CmsgBuffer for Vec<u8> {
     }
 }
 
-#[allow(missing_debug_implementations)] // msghdr isn't Debug
+#[derive(Clone, Copy, Debug, Eq, PartialEq)]
 pub struct RecvMsg<'a> {
     pub bytes: usize,
     cmsghdr: Option<&'a cmsghdr>,
@@ -435,7 +380,7 @@ impl<'a> RecvMsg<'a> {
     }
 }
 
-#[allow(missing_debug_implementations)] // msghdr isn't Debug
+#[derive(Clone, Copy, Debug, Eq, PartialEq)]
 pub struct CmsgIterator<'a> {
     /// Control message buffer to decode from. Must adhere to cmsg alignment.
     cmsghdr: Option<&'a cmsghdr>,
@@ -474,7 +419,7 @@ impl<'a> Iterator for CmsgIterator<'a> {
 //  alignment issues.
 //
 //  See https://github.com/nix-rust/nix/issues/999
-#[allow(missing_debug_implementations)]
+#[derive(Clone, Debug, Eq, PartialEq)]
 pub enum ControlMessageOwned {
     /// Received version of
     /// [`ControlMessage::ScmRights`][#enum.ControlMessage.html#variant.ScmRights]
@@ -675,7 +620,7 @@ impl ControlMessageOwned {
 /// exhaustively pattern-match it.
 ///
 /// [Further reading](http://man7.org/linux/man-pages/man3/cmsg.3.html)
-#[allow(missing_debug_implementations)]
+#[derive(Clone, Copy, Debug, Eq, PartialEq)]
 pub enum ControlMessage<'a> {
     /// A message of type `SCM_RIGHTS`, containing an array of file
     /// descriptors passed between processes.
@@ -738,7 +683,7 @@ pub enum ControlMessage<'a> {
 
 // An opaque structure used to prevent cmsghdr from being a public type
 #[doc(hidden)]
-#[allow(missing_debug_implementations)]
+#[derive(Clone, Debug, Eq, PartialEq)]
 pub struct UnknownCmsg(cmsghdr, Vec<u8>);
 
 impl<'a> ControlMessage<'a> {
diff --git a/src/sys/socket/sockopt.rs b/src/sys/socket/sockopt.rs
index 4727698b1d..610bab42f9 100644
--- a/src/sys/socket/sockopt.rs
+++ b/src/sys/socket/sockopt.rs
@@ -173,7 +173,7 @@ macro_rules! sockopt_impl {
     };
 
     (GetOnly, $name:ident, $level:path, $flag:path, $ty:ty, $getter:ty) => {
-        #[derive(Copy, Clone, Debug)]
+        #[derive(Clone, Copy, Debug, Eq, Hash, PartialEq)]
         pub struct $name;
 
         getsockopt_impl!($name, $level, $flag, $ty, $getter);
@@ -184,14 +184,14 @@ macro_rules! sockopt_impl {
     };
 
     (SetOnly, $name:ident, $level:path, $flag:path, $ty:ty, $setter:ty) => {
-        #[derive(Copy, Clone, Debug)]
+        #[derive(Clone, Copy, Debug, Eq, Hash, PartialEq)]
         pub struct $name;
 
         setsockopt_impl!($name, $level, $flag, $ty, $setter);
     };
 
     (Both, $name:ident, $level:path, $flag:path, $ty:ty, $getter:ty, $setter:ty) => {
-        #[derive(Copy, Clone, Debug)]
+        #[derive(Clone, Copy, Debug, Eq, Hash, PartialEq)]
         pub struct $name;
 
         setsockopt_impl!($name, $level, $flag, $ty, $setter);
diff --git a/src/sys/statvfs.rs b/src/sys/statvfs.rs
index de69ae51f8..e5980369d5 100644
--- a/src/sys/statvfs.rs
+++ b/src/sys/statvfs.rs
@@ -57,8 +57,7 @@ libc_bitflags!(
 /// For more information see the [`statvfs(3)` man pages](http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/sys_statvfs.h.html).
 // FIXME: Replace with repr(transparent)
 #[repr(C)]
-#[derive(Clone, Copy)]
-#[allow(missing_debug_implementations)]
+#[derive(Clone, Copy, Debug, Eq, Hash, PartialEq)]
 pub struct Statvfs(libc::statvfs);
 
 impl Statvfs {
diff --git a/src/sys/sysinfo.rs b/src/sys/sysinfo.rs
index 98ef7bd517..4c8e389888 100644
--- a/src/sys/sysinfo.rs
+++ b/src/sys/sysinfo.rs
@@ -6,8 +6,7 @@ use Result;
 use errno::Errno;
 
 /// System info structure returned by `sysinfo`.
-#[derive(Copy, Clone)]
-#[allow(missing_debug_implementations)] // libc::sysinfo doesn't impl Debug
+#[derive(Copy, Clone, Debug, Eq, Hash, PartialEq)]
 pub struct SysInfo(libc::sysinfo);
 
 impl SysInfo {
diff --git a/src/sys/termios.rs b/src/sys/termios.rs
index d8815baa00..c7cdf10b46 100644
--- a/src/sys/termios.rs
+++ b/src/sys/termios.rs
@@ -176,8 +176,7 @@ use ::unistd::Pid;
 /// This is a wrapper around the `libc::termios` struct that provides a safe interface for the
 /// standard fields. The only safe way to obtain an instance of this struct is to extract it from
 /// an open port using `tcgetattr()`.
-#[derive(Clone)]
-#[allow(missing_debug_implementations)]
+#[derive(Clone, Debug, Eq, PartialEq)]
 pub struct Termios {
     inner: RefCell<libc::termios>,
     /// Input mode flags (see `termios.c_iflag` documentation)
diff --git a/src/sys/time.rs b/src/sys/time.rs
index 4bd3b7808d..3ad57543b1 100644
--- a/src/sys/time.rs
+++ b/src/sys/time.rs
@@ -45,7 +45,7 @@ pub trait TimeValLike: Sized {
 }
 
 #[repr(C)]
-#[derive(Clone, Copy)]
+#[derive(Clone, Copy, Debug, Eq, Hash, PartialEq)]
 pub struct TimeSpec(timespec);
 
 const NANOS_PER_SEC: i64 = 1_000_000_000;
@@ -67,25 +67,6 @@ impl AsRef<timespec> for TimeSpec {
     }
 }
 
-impl fmt::Debug for TimeSpec {
-    fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
-        fmt.debug_struct("TimeSpec")
-            .field("tv_sec", &self.tv_sec())
-            .field("tv_nsec", &self.tv_nsec())
-            .finish()
-    }
-}
-
-impl PartialEq for TimeSpec {
-    // The implementation of cmp is simplified by assuming that the struct is
-    // normalized.  That is, tv_nsec must always be within [0, 1_000_000_000)
-    fn eq(&self, other: &TimeSpec) -> bool {
-        self.tv_sec() == other.tv_sec() && self.tv_nsec() == other.tv_nsec()
-    }
-}
-
-impl Eq for TimeSpec {}
-
 impl Ord for TimeSpec {
     // The implementation of cmp is simplified by assuming that the struct is
     // normalized.  That is, tv_nsec must always be within [0, 1_000_000_000)
@@ -259,7 +240,7 @@ impl fmt::Display for TimeSpec {
 
 
 #[repr(C)]
-#[derive(Clone, Copy)]
+#[derive(Clone, Copy, Debug, Eq, Hash, PartialEq)]
 pub struct TimeVal(timeval);
 
 const MICROS_PER_SEC: i64 = 1_000_000;
@@ -278,25 +259,6 @@ impl AsRef<timeval> for TimeVal {
     }
 }
 
-impl fmt::Debug for TimeVal {
-    fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
-        fmt.debug_struct("TimeVal")
-            .field("tv_sec", &self.tv_sec())
-            .field("tv_usec", &self.tv_usec())
-            .finish()
-    }
-}
-
-impl PartialEq for TimeVal {
-    // The implementation of cmp is simplified by assuming that the struct is
-    // normalized.  That is, tv_usec must always be within [0, 1_000_000)
-    fn eq(&self, other: &TimeVal) -> bool {
-        self.tv_sec() == other.tv_sec() && self.tv_usec() == other.tv_usec()
-    }
-}
-
-impl Eq for TimeVal {}
-
 impl Ord for TimeVal {
     // The implementation of cmp is simplified by assuming that the struct is
     // normalized.  That is, tv_usec must always be within [0, 1_000_000)
diff --git a/src/sys/uio.rs b/src/sys/uio.rs
index 45860be5aa..d089084eed 100644
--- a/src/sys/uio.rs
+++ b/src/sys/uio.rs
@@ -88,8 +88,7 @@ pub fn pread(fd: RawFd, buf: &mut [u8], offset: off_t) -> Result<usize>{
 /// and [`process_vm_writev`](fn.process_vm_writev.html).
 #[cfg(target_os = "linux")]
 #[repr(C)]
-#[derive(Clone, Copy)]
-#[allow(missing_debug_implementations)]
+#[derive(Clone, Copy, Debug, Eq, Hash, PartialEq)]
 pub struct RemoteIoVec {
     /// The starting address of this slice (`iov_base`).
     pub base: usize,
@@ -160,7 +159,7 @@ pub fn process_vm_readv(pid: ::unistd::Pid, local_iov: &[IoVec<&mut [u8]>], remo
 }
 
 #[repr(C)]
-#[allow(missing_debug_implementations)]
+#[derive(Clone, Copy, Debug, Eq, Hash, PartialEq)]
 pub struct IoVec<T>(libc::iovec, PhantomData<T>);
 
 impl<T> IoVec<T> {
diff --git a/src/sys/utsname.rs b/src/sys/utsname.rs
index e33d0739a0..ab09c7d232 100644
--- a/src/sys/utsname.rs
+++ b/src/sys/utsname.rs
@@ -4,8 +4,7 @@ use std::ffi::CStr;
 use std::str::from_utf8_unchecked;
 
 #[repr(C)]
-#[derive(Clone, Copy)]
-#[allow(missing_debug_implementations)]
+#[derive(Clone, Copy, Debug, Eq, Hash, PartialEq)]
 pub struct UtsName(libc::utsname);
 
 impl UtsName {
diff --git a/src/sys/wait.rs b/src/sys/wait.rs
index 3f99757daf..c54f7ec579 100644
--- a/src/sys/wait.rs
+++ b/src/sys/wait.rs
@@ -55,7 +55,7 @@ libc_bitflags!(
 /// Note that there are two Linux-specific enum variants, `PtraceEvent`
 /// and `PtraceSyscall`. Portable code should avoid exhaustively
 /// matching on `WaitStatus`.
-#[derive(Eq, PartialEq, Clone, Copy, Debug)]
+#[derive(Clone, Copy, Debug, Eq, Hash, PartialEq)]
 pub enum WaitStatus {
     /// The process exited normally (as with `exit()` or returning from
     /// `main`) with the given exit code. This case matches the C macro
diff --git a/src/ucontext.rs b/src/ucontext.rs
index c94464d570..5e10e7d1f8 100644
--- a/src/ucontext.rs
+++ b/src/ucontext.rs
@@ -6,8 +6,7 @@ use errno::Errno;
 use std::mem;
 use sys::signal::SigSet;
 
-#[derive(Clone, Copy)]
-#[allow(missing_debug_implementations)]
+#[derive(Clone, Copy, Debug, Eq, Hash, PartialEq)]
 pub struct UContext {
     context: libc::ucontext_t,
 }