From 88256dbdcfc3b284f5533e5aa2969bf5061db22a Mon Sep 17 00:00:00 2001
From: Dario Nieuwenhuis <dirbaio@dirbaio.net>
Date: Sun, 27 Dec 2020 00:11:30 +0100
Subject: [PATCH] Update to Rust 2018. Fixes #271

---
 CODE_STYLE.md                |   4 +-
 Cargo.toml                   |   1 +
 benches/bench.rs             |   3 -
 examples/benchmark.rs        |  10 +--
 examples/client.rs           |   8 +--
 examples/dhcp_client.rs      |   6 --
 examples/httpclient.rs       |  10 +--
 examples/loopback.rs         |  12 +---
 examples/multicast.rs        |   9 +--
 examples/ping.rs             |  13 ++--
 examples/server.rs           |   8 +--
 examples/tcpdump.rs          |   2 -
 examples/utils.rs            |   2 +-
 src/dhcp/clientv4.rs         |  14 ++---
 src/iface/ethernet.rs        | 116 +++++++++++++++++------------------
 src/iface/neighbor.rs        |   6 +-
 src/iface/route.rs           |  10 +--
 src/lib.rs                   |  16 +----
 src/macros.rs                |  16 ++---
 src/parsers.rs               |  32 +++++-----
 src/phy/fault_injector.rs    |   6 +-
 src/phy/fuzz_injector.rs     |   6 +-
 src/phy/loopback.rs          |   6 +-
 src/phy/mod.rs               |   4 +-
 src/phy/pcap_writer.rs       |   6 +-
 src/phy/raw_socket.rs        |   6 +-
 src/phy/sys/mod.rs           |   2 +-
 src/phy/tap_interface.rs     |   6 +-
 src/phy/tracer.rs            |   8 +--
 src/socket/icmp.rs           |  32 +++++-----
 src/socket/meta.rs           |   6 +-
 src/socket/mod.rs            |   2 +-
 src/socket/raw.rs            |  31 +++++-----
 src/socket/ref_.rs           |   8 +--
 src/socket/set.rs            |   4 +-
 src/socket/tcp.rs            |  24 ++++----
 src/socket/udp.rs            |  22 +++----
 src/storage/packet_buffer.rs |   4 +-
 src/storage/ring_buffer.rs   |   4 +-
 src/wire/arp.rs              |   8 +--
 src/wire/dhcpv4.rs           |  10 +--
 src/wire/ethernet.rs         |   6 +-
 src/wire/icmp.rs             |   4 +-
 src/wire/icmpv4.rs           |  12 ++--
 src/wire/icmpv6.rs           |  18 +++---
 src/wire/igmp.rs             |  12 ++--
 src/wire/ip.rs               |  20 +++---
 src/wire/ipv4.rs             |  12 ++--
 src/wire/ipv6.rs             |  25 ++++----
 src/wire/ipv6fragment.rs     |   4 +-
 src/wire/ipv6hopbyhop.rs     |   6 +-
 src/wire/ipv6option.rs       |   4 +-
 src/wire/ipv6routing.rs      |   8 +--
 src/wire/mld.rs              |  12 ++--
 src/wire/ndisc.rs            |  21 ++++---
 src/wire/ndiscoption.rs      |  17 ++---
 src/wire/tcp.rs              |  14 ++---
 src/wire/udp.rs              |  14 ++---
 utils/packet2pcap.rs         |   3 -
 59 files changed, 325 insertions(+), 390 deletions(-)

diff --git a/CODE_STYLE.md b/CODE_STYLE.md
index 902e20f..4cf2ca2 100644
--- a/CODE_STYLE.md
+++ b/CODE_STYLE.md
@@ -16,8 +16,8 @@ to most specific, but it's not very important.
 ```rust
 use core::cell::RefCell;
 
-use {Error, Result};
-use phy::{self, DeviceCapabilities, Device};
+use crate::{Error, Result};
+use crate::phy::{self, DeviceCapabilities, Device};
 ```
 
 ## Wrapping function calls
diff --git a/Cargo.toml b/Cargo.toml
index 63a9c04..c6f1130 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,7 @@
 [package]
 name = "smoltcp"
 version = "0.6.0"
+edition = "2018"
 authors = ["whitequark <whitequark@whitequark.org>"]
 description = "A TCP/IP stack designed for bare-metal, real-time systems without a heap."
 documentation = "https://docs.rs/smoltcp/"
diff --git a/benches/bench.rs b/benches/bench.rs
index 4aed8ce..b1ddc85 100644
--- a/benches/bench.rs
+++ b/benches/bench.rs
@@ -1,8 +1,5 @@
 #![feature(test)]
 
-extern crate test;
-extern crate smoltcp;
-
 mod wire {
     use test;
     #[cfg(feature = "proto-ipv6")]
diff --git a/examples/benchmark.rs b/examples/benchmark.rs
index 3e78ac2..92d8c46 100644
--- a/examples/benchmark.rs
+++ b/examples/benchmark.rs
@@ -1,11 +1,3 @@
-#[cfg(feature = "log")]
-#[macro_use]
-extern crate log;
-#[cfg(feature = "log")]
-extern crate env_logger;
-extern crate getopts;
-extern crate smoltcp;
-
 mod utils;
 
 use std::cmp;
@@ -15,6 +7,8 @@ use std::thread;
 use std::io::{Read, Write};
 use std::net::TcpStream;
 use std::os::unix::io::AsRawFd;
+use log::debug;
+
 use smoltcp::phy::wait as phy_wait;
 use smoltcp::wire::{EthernetAddress, IpAddress, IpCidr};
 use smoltcp::iface::{NeighborCache, EthernetInterfaceBuilder};
diff --git a/examples/client.rs b/examples/client.rs
index a9aaf65..58340aa 100644
--- a/examples/client.rs
+++ b/examples/client.rs
@@ -1,14 +1,10 @@
-#[macro_use]
-extern crate log;
-extern crate env_logger;
-extern crate getopts;
-extern crate smoltcp;
-
 mod utils;
 
 use std::str::{self, FromStr};
 use std::collections::BTreeMap;
 use std::os::unix::io::AsRawFd;
+use log::debug;
+
 use smoltcp::phy::wait as phy_wait;
 use smoltcp::wire::{EthernetAddress, Ipv4Address, IpAddress, IpCidr};
 use smoltcp::iface::{NeighborCache, EthernetInterfaceBuilder, Routes};
diff --git a/examples/dhcp_client.rs b/examples/dhcp_client.rs
index 0695c40..a751e59 100644
--- a/examples/dhcp_client.rs
+++ b/examples/dhcp_client.rs
@@ -1,9 +1,3 @@
-#[macro_use]
-extern crate log;
-extern crate env_logger;
-extern crate getopts;
-extern crate smoltcp;
-
 mod utils;
 
 use std::collections::BTreeMap;
diff --git a/examples/httpclient.rs b/examples/httpclient.rs
index 7ac9ef7..d2d8f40 100644
--- a/examples/httpclient.rs
+++ b/examples/httpclient.rs
@@ -1,17 +1,11 @@
-#[macro_use]
-extern crate log;
-extern crate env_logger;
-extern crate getopts;
-extern crate rand;
-extern crate url;
-extern crate smoltcp;
-
 mod utils;
 
 use std::str::{self, FromStr};
 use std::collections::BTreeMap;
 use std::os::unix::io::AsRawFd;
 use url::Url;
+use log::debug;
+
 use smoltcp::phy::wait as phy_wait;
 use smoltcp::wire::{EthernetAddress, Ipv4Address, Ipv6Address, IpAddress, IpCidr};
 use smoltcp::iface::{NeighborCache, EthernetInterfaceBuilder, Routes};
diff --git a/examples/loopback.rs b/examples/loopback.rs
index afc33fa..a291aa4 100644
--- a/examples/loopback.rs
+++ b/examples/loopback.rs
@@ -1,21 +1,13 @@
 #![cfg_attr(not(feature = "std"), no_std)]
 #![allow(unused_mut)]
 
-#[cfg(feature = "std")]
-use std as core;
-#[macro_use]
-extern crate log;
-extern crate smoltcp;
-#[cfg(feature = "std")]
-extern crate env_logger;
-#[cfg(feature = "std")]
-extern crate getopts;
-
 #[cfg(feature = "std")]
 #[allow(dead_code)]
 mod utils;
 
 use core::str;
+use log::{info, debug, error};
+
 use smoltcp::phy::Loopback;
 use smoltcp::wire::{EthernetAddress, IpAddress, IpCidr};
 use smoltcp::iface::{NeighborCache, EthernetInterfaceBuilder};
diff --git a/examples/multicast.rs b/examples/multicast.rs
index 81a606f..92f1876 100644
--- a/examples/multicast.rs
+++ b/examples/multicast.rs
@@ -1,14 +1,9 @@
-#[macro_use]
-extern crate log;
-extern crate env_logger;
-extern crate getopts;
-extern crate smoltcp;
-extern crate byteorder;
-
 mod utils;
 
 use std::collections::BTreeMap;
 use std::os::unix::io::AsRawFd;
+use log::debug;
+
 use smoltcp::phy::wait as phy_wait;
 use smoltcp::wire::{EthernetAddress, IpVersion, IpProtocol, IpAddress, IpCidr, Ipv4Address,
                     Ipv4Packet, IgmpPacket, IgmpRepr};
diff --git a/examples/ping.rs b/examples/ping.rs
index bdbf96e..411e450 100644
--- a/examples/ping.rs
+++ b/examples/ping.rs
@@ -1,16 +1,13 @@
-#[macro_use]
-extern crate log;
-extern crate env_logger;
-extern crate getopts;
-extern crate smoltcp;
-extern crate byteorder;
-
 mod utils;
 
 use std::str::FromStr;
 use std::collections::BTreeMap;
 use std::cmp;
 use std::os::unix::io::AsRawFd;
+use std::collections::HashMap;
+use log::debug;
+use byteorder::{ByteOrder, NetworkEndian};
+
 use smoltcp::time::{Duration, Instant};
 use smoltcp::phy::Device;
 use smoltcp::phy::wait as phy_wait;
@@ -19,8 +16,6 @@ use smoltcp::wire::{EthernetAddress, IpAddress, IpCidr,
                     Ipv4Address, Icmpv4Repr, Icmpv4Packet};
 use smoltcp::iface::{NeighborCache, EthernetInterfaceBuilder, Routes};
 use smoltcp::socket::{SocketSet, IcmpSocket, IcmpSocketBuffer, IcmpPacketMetadata, IcmpEndpoint};
-use std::collections::HashMap;
-use byteorder::{ByteOrder, NetworkEndian};
 
 macro_rules! send_icmp_ping {
     ( $repr_type:ident, $packet_type:ident, $ident:expr, $seq_no:expr,
diff --git a/examples/server.rs b/examples/server.rs
index db4d14b..ae53b6c 100644
--- a/examples/server.rs
+++ b/examples/server.rs
@@ -1,15 +1,11 @@
-#[macro_use]
-extern crate log;
-extern crate env_logger;
-extern crate getopts;
-extern crate smoltcp;
-
 mod utils;
 
 use std::str;
 use std::collections::BTreeMap;
 use std::fmt::Write;
 use std::os::unix::io::AsRawFd;
+use log::debug;
+
 use smoltcp::phy::wait as phy_wait;
 use smoltcp::wire::{EthernetAddress, IpAddress, IpCidr};
 use smoltcp::iface::{NeighborCache, EthernetInterfaceBuilder};
diff --git a/examples/tcpdump.rs b/examples/tcpdump.rs
index 166ac1e..5ca8ec6 100644
--- a/examples/tcpdump.rs
+++ b/examples/tcpdump.rs
@@ -1,5 +1,3 @@
-extern crate smoltcp;
-
 use std::env;
 use std::os::unix::io::AsRawFd;
 use smoltcp::phy::wait as phy_wait;
diff --git a/examples/utils.rs b/examples/utils.rs
index f6b94e0..09d43d4 100644
--- a/examples/utils.rs
+++ b/examples/utils.rs
@@ -9,7 +9,7 @@ use std::time::{SystemTime, UNIX_EPOCH};
 use std::env;
 use std::process;
 #[cfg(feature = "log")]
-use log::{Level, LevelFilter};
+use log::{Level, LevelFilter, trace};
 #[cfg(feature = "log")]
 use env_logger::Builder;
 use getopts::{Options, Matches};
diff --git a/src/dhcp/clientv4.rs b/src/dhcp/clientv4.rs
index e7f01a6..0828d1f 100644
--- a/src/dhcp/clientv4.rs
+++ b/src/dhcp/clientv4.rs
@@ -1,13 +1,13 @@
-use {Result, Error};
-use wire::{IpVersion, IpProtocol, IpEndpoint, IpAddress,
+use crate::{Result, Error};
+use crate::wire::{IpVersion, IpProtocol, IpEndpoint, IpAddress,
            Ipv4Cidr, Ipv4Address, Ipv4Packet, Ipv4Repr,
            UdpPacket, UdpRepr,
            DhcpPacket, DhcpRepr, DhcpMessageType};
-use wire::dhcpv4::field as dhcpv4_field;
-use socket::{SocketSet, SocketHandle, RawSocket, RawSocketBuffer};
-use phy::{Device, ChecksumCapabilities};
-use iface::EthernetInterface as Interface;
-use time::{Instant, Duration};
+use crate::wire::dhcpv4::field as dhcpv4_field;
+use crate::socket::{SocketSet, SocketHandle, RawSocket, RawSocketBuffer};
+use crate::phy::{Device, ChecksumCapabilities};
+use crate::iface::EthernetInterface as Interface;
+use crate::time::{Instant, Duration};
 use super::{UDP_SERVER_PORT, UDP_CLIENT_PORT};
 
 const DISCOVER_TIMEOUT: u64 = 10;
diff --git a/src/iface/ethernet.rs b/src/iface/ethernet.rs
index 263a7f1..71e6094 100644
--- a/src/iface/ethernet.rs
+++ b/src/iface/ethernet.rs
@@ -7,50 +7,50 @@ use managed::{ManagedSlice, ManagedMap};
 #[cfg(not(feature = "proto-igmp"))]
 use core::marker::PhantomData;
 
-use {Error, Result};
-use phy::{Device, DeviceCapabilities, RxToken, TxToken};
-use time::{Duration, Instant};
-use wire::pretty_print::PrettyPrinter;
-use wire::{EthernetAddress, EthernetProtocol, EthernetFrame};
-use wire::{IpAddress, IpProtocol, IpRepr, IpCidr};
+use crate::{Error, Result};
+use crate::phy::{Device, DeviceCapabilities, RxToken, TxToken};
+use crate::time::{Duration, Instant};
+use crate::wire::pretty_print::PrettyPrinter;
+use crate::wire::{EthernetAddress, EthernetProtocol, EthernetFrame};
+use crate::wire::{IpAddress, IpProtocol, IpRepr, IpCidr};
 #[cfg(feature = "proto-ipv6")]
-use wire::{Ipv6Address, Ipv6Packet, Ipv6Repr, IPV6_MIN_MTU};
+use crate::wire::{Ipv6Address, Ipv6Packet, Ipv6Repr, IPV6_MIN_MTU};
 #[cfg(feature = "proto-ipv4")]
-use wire::{Ipv4Address, Ipv4Packet, Ipv4Repr, IPV4_MIN_MTU};
+use crate::wire::{Ipv4Address, Ipv4Packet, Ipv4Repr, IPV4_MIN_MTU};
 #[cfg(feature = "proto-ipv4")]
-use wire::{ArpPacket, ArpRepr, ArpOperation};
+use crate::wire::{ArpPacket, ArpRepr, ArpOperation};
 #[cfg(feature = "proto-ipv4")]
-use wire::{Icmpv4Packet, Icmpv4Repr, Icmpv4DstUnreachable};
+use crate::wire::{Icmpv4Packet, Icmpv4Repr, Icmpv4DstUnreachable};
 #[cfg(feature = "proto-igmp")]
-use wire::{IgmpPacket, IgmpRepr, IgmpVersion};
+use crate::wire::{IgmpPacket, IgmpRepr, IgmpVersion};
 #[cfg(feature = "proto-ipv6")]
-use wire::{Icmpv6Packet, Icmpv6Repr, Icmpv6ParamProblem};
+use crate::wire::{Icmpv6Packet, Icmpv6Repr, Icmpv6ParamProblem};
 #[cfg(all(feature = "socket-icmp", any(feature = "proto-ipv4", feature = "proto-ipv6")))]
-use wire::IcmpRepr;
+use crate::wire::IcmpRepr;
 #[cfg(feature = "proto-ipv6")]
-use wire::{Ipv6HopByHopHeader, Ipv6HopByHopRepr};
+use crate::wire::{Ipv6HopByHopHeader, Ipv6HopByHopRepr};
 #[cfg(feature = "proto-ipv6")]
-use wire::{Ipv6OptionRepr, Ipv6OptionFailureType};
+use crate::wire::{Ipv6OptionRepr, Ipv6OptionFailureType};
 #[cfg(feature = "proto-ipv6")]
-use wire::{NdiscNeighborFlags, NdiscRepr};
+use crate::wire::{NdiscNeighborFlags, NdiscRepr};
 #[cfg(all(feature = "proto-ipv6", feature = "socket-udp"))]
-use wire::Icmpv6DstUnreachable;
+use crate::wire::Icmpv6DstUnreachable;
 #[cfg(feature = "socket-udp")]
-use wire::{UdpPacket, UdpRepr};
+use crate::wire::{UdpPacket, UdpRepr};
 #[cfg(feature = "socket-tcp")]
-use wire::{TcpPacket, TcpRepr, TcpControl};
+use crate::wire::{TcpPacket, TcpRepr, TcpControl};
 
-use socket::{Socket, SocketSet, AnySocket, PollAt};
+use crate::socket::{Socket, SocketSet, AnySocket, PollAt};
 #[cfg(feature = "socket-raw")]
-use socket::RawSocket;
+use crate::socket::RawSocket;
 #[cfg(all(feature = "socket-icmp", any(feature = "proto-ipv4", feature = "proto-ipv6")))]
-use socket::IcmpSocket;
+use crate::socket::IcmpSocket;
 #[cfg(feature = "socket-udp")]
-use socket::UdpSocket;
+use crate::socket::UdpSocket;
 #[cfg(feature = "socket-tcp")]
-use socket::TcpSocket;
-use super::{NeighborCache, NeighborAnswer};
-use super::Routes;
+use crate::socket::TcpSocket;
+use crate::iface::{NeighborCache, NeighborAnswer};
+use crate::iface::Routes;
 
 /// An Ethernet network interface.
 ///
@@ -1722,37 +1722,37 @@ mod test {
     #[cfg(feature = "proto-igmp")]
     use std::vec::Vec;
     use std::collections::BTreeMap;
-    use {Result, Error};
 
+    use crate::{Result, Error};
     use super::InterfaceBuilder;
-    use iface::{NeighborCache, EthernetInterface};
-    use phy::{self, Loopback, ChecksumCapabilities};
+    use crate::iface::{NeighborCache, EthernetInterface};
+    use crate::phy::{self, Loopback, ChecksumCapabilities};
     #[cfg(feature = "proto-igmp")]
-    use phy::{Device, RxToken, TxToken};
-    use time::Instant;
-    use socket::SocketSet;
+    use crate::phy::{Device, RxToken, TxToken};
+    use crate::time::Instant;
+    use crate::socket::SocketSet;
     #[cfg(feature = "proto-ipv4")]
-    use wire::{ArpOperation, ArpPacket, ArpRepr};
-    use wire::{EthernetAddress, EthernetFrame, EthernetProtocol};
-    use wire::{IpAddress, IpCidr, IpProtocol, IpRepr};
+    use crate::wire::{ArpOperation, ArpPacket, ArpRepr};
+    use crate::wire::{EthernetAddress, EthernetFrame, EthernetProtocol};
+    use crate::wire::{IpAddress, IpCidr, IpProtocol, IpRepr};
     #[cfg(feature = "proto-ipv4")]
-    use wire::{Ipv4Address, Ipv4Repr};
+    use crate::wire::{Ipv4Address, Ipv4Repr};
     #[cfg(feature = "proto-igmp")]
-    use wire::Ipv4Packet;
+    use crate::wire::Ipv4Packet;
     #[cfg(feature = "proto-ipv4")]
-    use wire::{Icmpv4Repr, Icmpv4DstUnreachable};
+    use crate::wire::{Icmpv4Repr, Icmpv4DstUnreachable};
     #[cfg(feature = "proto-igmp")]
-    use wire::{IgmpPacket, IgmpRepr, IgmpVersion};
+    use crate::wire::{IgmpPacket, IgmpRepr, IgmpVersion};
     #[cfg(all(feature = "socket-udp", any(feature = "proto-ipv4", feature = "proto-ipv6")))]
-    use wire::{UdpPacket, UdpRepr};
+    use crate::wire::{UdpPacket, UdpRepr};
     #[cfg(feature = "proto-ipv6")]
-    use wire::{Ipv6Address, Ipv6Repr};
+    use crate::wire::{Ipv6Address, Ipv6Repr};
     #[cfg(feature = "proto-ipv6")]
-    use wire::{Icmpv6Packet, Icmpv6Repr, Icmpv6ParamProblem};
+    use crate::wire::{Icmpv6Packet, Icmpv6Repr, Icmpv6ParamProblem};
     #[cfg(feature = "proto-ipv6")]
-    use wire::{NdiscNeighborFlags, NdiscRepr};
+    use crate::wire::{NdiscNeighborFlags, NdiscRepr};
     #[cfg(feature = "proto-ipv6")]
-    use wire::{Ipv6HopByHopHeader, Ipv6Option, Ipv6OptionRepr};
+    use crate::wire::{Ipv6HopByHopHeader, Ipv6Option, Ipv6OptionRepr};
 
     use super::Packet;
 
@@ -2003,8 +2003,8 @@ mod test {
     #[test]
     #[cfg(feature = "socket-udp")]
     fn test_handle_udp_broadcast() {
-        use socket::{UdpSocket, UdpSocketBuffer, UdpPacketMetadata};
-        use wire::IpEndpoint;
+        use crate::socket::{UdpSocket, UdpSocketBuffer, UdpPacketMetadata};
+        use crate::wire::IpEndpoint;
 
         static UDP_PAYLOAD: [u8; 5] = [0x48, 0x65, 0x6c, 0x6c, 0x6f];
 
@@ -2075,7 +2075,7 @@ mod test {
     #[test]
     #[cfg(feature = "proto-ipv4")]
     fn test_handle_ipv4_broadcast() {
-        use wire::{Ipv4Packet, Icmpv4Repr, Icmpv4Packet};
+        use crate::wire::{Ipv4Packet, Icmpv4Repr, Icmpv4Packet};
 
         let (mut iface, mut socket_set) = create_loopback();
 
@@ -2134,11 +2134,11 @@ mod test {
     #[cfg(feature = "socket-udp")]
     fn test_icmp_reply_size() {
         #[cfg(all(feature = "proto-ipv4", not(feature = "proto-ipv6")))]
-        use wire::IPV4_MIN_MTU as MIN_MTU;
+        use crate::wire::IPV4_MIN_MTU as MIN_MTU;
         #[cfg(feature = "proto-ipv6")]
-        use wire::Icmpv6DstUnreachable;
+        use crate::wire::Icmpv6DstUnreachable;
         #[cfg(feature = "proto-ipv6")]
-        use wire::IPV6_MIN_MTU as MIN_MTU;
+        use crate::wire::IPV6_MIN_MTU as MIN_MTU;
 
         #[cfg(all(feature = "proto-ipv4", not(feature = "proto-ipv6")))]
         const MAX_PAYLOAD_LEN: usize = 528;
@@ -2371,8 +2371,8 @@ mod test {
     #[test]
     #[cfg(all(feature = "socket-icmp", feature = "proto-ipv4"))]
     fn test_icmpv4_socket() {
-        use socket::{IcmpSocket, IcmpEndpoint, IcmpSocketBuffer, IcmpPacketMetadata};
-        use wire::Icmpv4Packet;
+        use crate::socket::{IcmpSocket, IcmpEndpoint, IcmpSocketBuffer, IcmpPacketMetadata};
+        use crate::wire::Icmpv4Packet;
 
         let (iface, mut socket_set) = create_loopback();
 
@@ -2613,8 +2613,8 @@ mod test {
     #[test]
     #[cfg(all(feature = "proto-ipv4", feature = "socket-raw"))]
     fn test_raw_socket_no_reply() {
-        use socket::{RawSocket, RawSocketBuffer, RawPacketMetadata};
-        use wire::{IpVersion, Ipv4Packet, UdpPacket, UdpRepr};
+        use crate::socket::{RawSocket, RawSocketBuffer, RawPacketMetadata};
+        use crate::wire::{IpVersion, Ipv4Packet, UdpPacket, UdpRepr};
 
         let (mut iface, mut socket_set) = create_loopback();
 
@@ -2669,8 +2669,8 @@ mod test {
     #[test]
     #[cfg(all(feature = "proto-ipv4", feature = "socket-raw"))]
     fn test_raw_socket_truncated_packet() {
-        use socket::{RawSocket, RawSocketBuffer, RawPacketMetadata};
-        use wire::{IpVersion, Ipv4Packet, UdpPacket, UdpRepr};
+        use crate::socket::{RawSocket, RawSocketBuffer, RawPacketMetadata};
+        use crate::wire::{IpVersion, Ipv4Packet, UdpPacket, UdpRepr};
 
         let (mut iface, mut socket_set) = create_loopback();
 
@@ -2730,9 +2730,9 @@ mod test {
     #[test]
     #[cfg(all(feature = "proto-ipv4", feature = "socket-raw", feature = "socket-udp"))]
     fn test_raw_socket_with_udp_socket() {
-        use socket::{UdpSocket, UdpSocketBuffer, UdpPacketMetadata,
+        use crate::socket::{UdpSocket, UdpSocketBuffer, UdpPacketMetadata,
                      RawSocket, RawSocketBuffer, RawPacketMetadata};
-        use wire::{IpVersion, IpEndpoint, Ipv4Packet, UdpPacket, UdpRepr};
+        use crate::wire::{IpVersion, IpEndpoint, Ipv4Packet, UdpPacket, UdpRepr};
 
         static UDP_PAYLOAD: [u8; 5] = [0x48, 0x65, 0x6c, 0x6c, 0x6f];
 
diff --git a/src/iface/neighbor.rs b/src/iface/neighbor.rs
index 71a6440..8f2193a 100644
--- a/src/iface/neighbor.rs
+++ b/src/iface/neighbor.rs
@@ -3,8 +3,8 @@
 
 use managed::ManagedMap;
 
-use wire::{EthernetAddress, IpAddress};
-use time::{Duration, Instant};
+use crate::wire::{EthernetAddress, IpAddress};
+use crate::time::{Duration, Instant};
 
 /// A cached neighbor.
 ///
@@ -194,7 +194,7 @@ impl<'a> Cache<'a> {
 mod test {
     use super::*;
     use std::collections::BTreeMap;
-    use wire::ip::test::{MOCK_IP_ADDR_1, MOCK_IP_ADDR_2, MOCK_IP_ADDR_3, MOCK_IP_ADDR_4};
+    use crate::wire::ip::test::{MOCK_IP_ADDR_1, MOCK_IP_ADDR_2, MOCK_IP_ADDR_3, MOCK_IP_ADDR_4};
 
 
     const HADDR_A: EthernetAddress = EthernetAddress([0, 0, 0, 0, 0, 1]);
diff --git a/src/iface/route.rs b/src/iface/route.rs
index ad3e6d4..2ddc5fd 100644
--- a/src/iface/route.rs
+++ b/src/iface/route.rs
@@ -1,13 +1,13 @@
 use managed::ManagedMap;
-use time::Instant;
+use crate::time::Instant;
 use core::ops::Bound;
 
-use {Error, Result};
-use wire::{IpCidr, IpAddress};
+use crate::{Error, Result};
+use crate::wire::{IpCidr, IpAddress};
 #[cfg(feature = "proto-ipv4")]
-use wire::{Ipv4Address, Ipv4Cidr};
+use crate::wire::{Ipv4Address, Ipv4Cidr};
 #[cfg(feature = "proto-ipv6")]
-use wire::{Ipv6Address, Ipv6Cidr};
+use crate::wire::{Ipv6Address, Ipv6Cidr};
 
 /// A prefix of addresses that should be routed via a router
 #[derive(Debug, Clone, Copy)]
diff --git a/src/lib.rs b/src/lib.rs
index 94612dd..a25dae5 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,5 +1,4 @@
-#![cfg_attr(feature = "alloc", feature(alloc))]
-#![no_std]
+#![cfg_attr(not(any(test, feature = "std")), no_std)]
 #![deny(unsafe_code)]
 #![cfg_attr(all(any(feature = "proto-ipv4", feature = "proto-ipv6"), feature = "ethernet"), deny(unused))]
 
@@ -91,21 +90,8 @@ compile_error!("at least one socket needs to be enabled"); */
 // FIXME(dlrobertson): clippy fails with this lint
 #![cfg_attr(feature = "cargo-clippy", allow(if_same_then_else))]
 
-#[cfg(all(feature = "proto-ipv6", feature = "ethernet"))]
-#[macro_use]
-extern crate bitflags;
-extern crate byteorder;
-extern crate managed;
-#[cfg(any(test, feature = "std"))]
-#[macro_use]
-extern crate std;
-#[cfg(any(feature = "phy-raw_socket", feature = "phy-tap_interface"))]
-extern crate libc;
 #[cfg(feature = "alloc")]
 extern crate alloc;
-#[cfg(feature = "log")]
-#[macro_use(trace, debug)]
-extern crate log;
 
 use core::fmt;
 
diff --git a/src/macros.rs b/src/macros.rs
index eb51d03..2c1da7f 100644
--- a/src/macros.rs
+++ b/src/macros.rs
@@ -1,18 +1,14 @@
+
 #[cfg(feature = "log")]
-#[macro_use]
-mod log {
-    macro_rules! net_log {
-        (trace, $($arg:expr),*) => { trace!($($arg),*); };
-        (debug, $($arg:expr),*) => { debug!($($arg),*); };
-    }
+macro_rules! net_log {
+    (trace, $($arg:expr),*) => { log::trace!($($arg),*); };
+    (debug, $($arg:expr),*) => { log::debug!($($arg),*); };
 }
 
 #[cfg(not(feature = "log"))]
 #[macro_use]
-mod log {
-    macro_rules! net_log {
-        ($level:ident, $($arg:expr),*) => { $( let _ = $arg; )* }
-    }
+macro_rules! net_log {
+    ($level:ident, $($arg:expr),*) => { $( let _ = $arg; )* }
 }
 
 macro_rules! net_trace {
diff --git a/src/parsers.rs b/src/parsers.rs
index e645263..4c6b936 100644
--- a/src/parsers.rs
+++ b/src/parsers.rs
@@ -4,12 +4,12 @@ use core::str::FromStr;
 use core::result;
 
 #[cfg(feature = "ethernet")]
-use wire::EthernetAddress;
-use wire::{IpAddress, IpCidr, IpEndpoint};
+use crate::wire::EthernetAddress;
+use crate::wire::{IpAddress, IpCidr, IpEndpoint};
 #[cfg(feature = "proto-ipv4")]
-use wire::{Ipv4Address, Ipv4Cidr};
+use crate::wire::{Ipv4Address, Ipv4Cidr};
 #[cfg(feature = "proto-ipv6")]
-use wire::{Ipv6Address, Ipv6Cidr};
+use crate::wire::{Ipv6Address, Ipv6Cidr};
 
 type Result<T> = result::Result<T, ()>;
 
@@ -44,7 +44,7 @@ impl<'a> Parser<'a> {
         }
     }
 
-    fn try<F, T>(&mut self, f: F) -> Option<T>
+    fn try_do<F, T>(&mut self, f: F) -> Option<T>
             where F: FnOnce(&mut Parser<'a>) -> Result<T> {
         let pos = self.pos;
         match f(self) {
@@ -103,7 +103,7 @@ impl<'a> Parser<'a> {
                      hex: bool) -> Result<u32> {
         let mut value = self.accept_digit(hex)? as u32;
         for _ in 1..max_digits {
-            match self.try(|p| p.accept_digit(hex)) {
+            match self.try_do(|p| p.accept_digit(hex)) {
                 Some(digit) => {
                     value *= if hex { 16 } else { 10 };
                     value += digit as u32;
@@ -132,10 +132,10 @@ impl<'a> Parser<'a> {
 
     #[cfg(feature = "ethernet")]
     fn accept_mac(&mut self) -> Result<EthernetAddress> {
-        if let Some(mac) = self.try(|p| p.accept_mac_joined_with(b'-')) {
+        if let Some(mac) = self.try_do(|p| p.accept_mac_joined_with(b'-')) {
             return Ok(mac)
         }
-        if let Some(mac) = self.try(|p| p.accept_mac_joined_with(b':')) {
+        if let Some(mac) = self.try_do(|p| p.accept_mac_joined_with(b':')) {
             return Ok(mac)
         }
         Err(())
@@ -157,7 +157,7 @@ impl<'a> Parser<'a> {
     fn accept_ipv6_part(&mut self, (head, tail): (&mut [u16; 8], &mut [u16; 6]),
                         (head_idx, tail_idx): (&mut usize, &mut usize),
                         mut use_tail: bool, is_cidr: bool) -> Result<()> {
-        let double_colon = match self.try(|p| p.accept_str(b"::")) {
+        let double_colon = match self.try_do(|p| p.accept_str(b"::")) {
             Some(_) if !use_tail && *head_idx < 7 => {
                 // Found a double colon. Start filling out the
                 // tail and set the double colon flag in case
@@ -180,14 +180,14 @@ impl<'a> Parser<'a> {
             }
         };
 
-        match self.try(|p| p.accept_number(4, 0x10000, true)) {
+        match self.try_do(|p| p.accept_number(4, 0x10000, true)) {
             Some(part) if !use_tail && *head_idx < 8 => {
                 // Valid u16 to be added to the address
                 head[*head_idx] = part as u16;
                 *head_idx += 1;
 
                 if *head_idx == 6 && head[0..*head_idx] == [0, 0, 0, 0, 0, 0xffff] {
-                    self.try(|p| {
+                    self.try_do(|p| {
                         p.accept_char(b':')?;
                         p.accept_ipv4_mapped_ipv6_part(head, head_idx)
                     });
@@ -201,7 +201,7 @@ impl<'a> Parser<'a> {
 
                 if *tail_idx == 1 && tail[0] == 0xffff
                         && head[0..8] == [0, 0, 0, 0, 0, 0, 0, 0] {
-                    self.try(|p| {
+                    self.try_do(|p| {
                         p.accept_char(b':')?;
                         p.accept_ipv4_mapped_ipv6_part(tail, tail_idx)
                     });
@@ -287,13 +287,13 @@ impl<'a> Parser<'a> {
 
     fn accept_ip(&mut self) -> Result<IpAddress> {
         #[cfg(feature = "proto-ipv4")]
-        match self.try(|p| p.accept_ipv4()) {
+        match self.try_do(|p| p.accept_ipv4()) {
             Some(ipv4) => return Ok(IpAddress::Ipv4(ipv4)),
             None => ()
         }
 
         #[cfg(feature = "proto-ipv6")]
-        match self.try(|p| p.accept_ipv6(false)) {
+        match self.try_do(|p| p.accept_ipv6(false)) {
             Some(ipv6) => return Ok(IpAddress::Ipv6(ipv6)),
             None => ()
         }
@@ -333,13 +333,13 @@ impl<'a> Parser<'a> {
 
     fn accept_ip_endpoint(&mut self) -> Result<IpEndpoint> {
         #[cfg(feature = "proto-ipv4")]
-        match self.try(|p| p.accept_ipv4_endpoint()) {
+        match self.try_do(|p| p.accept_ipv4_endpoint()) {
             Some(ipv4) => return Ok(ipv4),
             None => ()
         }
 
         #[cfg(feature = "proto-ipv6")]
-        match self.try(|p| p.accept_ipv6_endpoint()) {
+        match self.try_do(|p| p.accept_ipv6_endpoint()) {
             Some(ipv6) => return Ok(ipv6),
             None => ()
         }
diff --git a/src/phy/fault_injector.rs b/src/phy/fault_injector.rs
index c5e2c4b..5f79fec 100644
--- a/src/phy/fault_injector.rs
+++ b/src/phy/fault_injector.rs
@@ -1,8 +1,8 @@
 use core::cell::RefCell;
 
-use {Error, Result};
-use phy::{self, DeviceCapabilities, Device};
-use time::{Duration, Instant};
+use crate::{Error, Result};
+use crate::phy::{self, DeviceCapabilities, Device};
+use crate::time::{Duration, Instant};
 
 // We use our own RNG to stay compatible with #![no_std].
 // The use of the RNG below has a slight bias, but it doesn't matter.
diff --git a/src/phy/fuzz_injector.rs b/src/phy/fuzz_injector.rs
index 83a6e42..9f11b17 100644
--- a/src/phy/fuzz_injector.rs
+++ b/src/phy/fuzz_injector.rs
@@ -1,6 +1,6 @@
-use Result;
-use phy::{self, DeviceCapabilities, Device};
-use time::Instant;
+use crate::Result;
+use crate::phy::{self, DeviceCapabilities, Device};
+use crate::time::Instant;
 
 // This could be fixed once associated consts are stable.
 const MTU: usize = 1536;
diff --git a/src/phy/loopback.rs b/src/phy/loopback.rs
index 7db99aa..b4e1f52 100644
--- a/src/phy/loopback.rs
+++ b/src/phy/loopback.rs
@@ -9,9 +9,9 @@ use alloc::collections::VecDeque;
 #[cfg(all(feature = "alloc", feature = "rust-1_28"))]
 use alloc::VecDeque;
 
-use Result;
-use phy::{self, Device, DeviceCapabilities};
-use time::Instant;
+use crate::Result;
+use crate::phy::{self, Device, DeviceCapabilities};
+use crate::time::Instant;
 
 /// A loopback device.
 #[derive(Debug)]
diff --git a/src/phy/mod.rs b/src/phy/mod.rs
index 47146b4..8ef6991 100644
--- a/src/phy/mod.rs
+++ b/src/phy/mod.rs
@@ -84,8 +84,8 @@ impl<'a> phy::TxToken for StmPhyTxToken<'a> {
 ```
 */
 
-use Result;
-use time::Instant;
+use crate::Result;
+use crate::time::Instant;
 
 #[cfg(all(any(feature = "phy-raw_socket", feature = "phy-tap_interface"), unix))]
 mod sys;
diff --git a/src/phy/pcap_writer.rs b/src/phy/pcap_writer.rs
index 53d7559..cb4b9ec 100644
--- a/src/phy/pcap_writer.rs
+++ b/src/phy/pcap_writer.rs
@@ -4,9 +4,9 @@ use std::cell::RefCell;
 use std::io::Write;
 use byteorder::{ByteOrder, NativeEndian};
 
-use Result;
-use phy::{self, DeviceCapabilities, Device};
-use time::Instant;
+use crate::Result;
+use crate::phy::{self, DeviceCapabilities, Device};
+use crate::time::Instant;
 
 enum_with_unknown! {
     /// Captured packet header type.
diff --git a/src/phy/raw_socket.rs b/src/phy/raw_socket.rs
index 231d3d1..3764551 100644
--- a/src/phy/raw_socket.rs
+++ b/src/phy/raw_socket.rs
@@ -4,9 +4,9 @@ use std::rc::Rc;
 use std::io;
 use std::os::unix::io::{RawFd, AsRawFd};
 
-use Result;
-use phy::{self, sys, DeviceCapabilities, Device};
-use time::Instant;
+use crate::Result;
+use crate::phy::{self, sys, DeviceCapabilities, Device};
+use crate::time::Instant;
 
 /// A socket that captures or transmits the complete frame.
 #[derive(Debug)]
diff --git a/src/phy/sys/mod.rs b/src/phy/sys/mod.rs
index 508eb1a..cfc9a88 100644
--- a/src/phy/sys/mod.rs
+++ b/src/phy/sys/mod.rs
@@ -3,7 +3,7 @@
 use libc;
 use std::{mem, ptr, io};
 use std::os::unix::io::RawFd;
-use time::Duration;
+use crate::time::Duration;
 
 #[cfg(target_os = "linux")]
 #[path = "linux.rs"]
diff --git a/src/phy/tap_interface.rs b/src/phy/tap_interface.rs
index dfdfb27..95202ab 100644
--- a/src/phy/tap_interface.rs
+++ b/src/phy/tap_interface.rs
@@ -4,9 +4,9 @@ use std::rc::Rc;
 use std::io;
 use std::os::unix::io::{RawFd, AsRawFd};
 
-use Result;
-use phy::{self, sys, DeviceCapabilities, Device};
-use time::Instant;
+use crate::Result;
+use crate::phy::{self, sys, DeviceCapabilities, Device};
+use crate::time::Instant;
 
 /// A virtual Ethernet interface.
 #[derive(Debug)]
diff --git a/src/phy/tracer.rs b/src/phy/tracer.rs
index b1598ad..22a2288 100644
--- a/src/phy/tracer.rs
+++ b/src/phy/tracer.rs
@@ -1,7 +1,7 @@
-use Result;
-use wire::pretty_print::{PrettyPrint, PrettyPrinter};
-use phy::{self, DeviceCapabilities, Device};
-use time::Instant;
+use crate::Result;
+use crate::wire::pretty_print::{PrettyPrint, PrettyPrinter};
+use crate::phy::{self, DeviceCapabilities, Device};
+use crate::time::Instant;
 
 /// A tracer device.
 ///
diff --git a/src/socket/icmp.rs b/src/socket/icmp.rs
index 72bb8ab..2afd8b8 100644
--- a/src/socket/icmp.rs
+++ b/src/socket/icmp.rs
@@ -1,21 +1,21 @@
 use core::cmp;
-
-use {Error, Result};
-use phy::{ChecksumCapabilities, DeviceCapabilities};
-use socket::{Socket, SocketMeta, SocketHandle, PollAt};
-use storage::{PacketBuffer, PacketMetadata};
-use wire::{IpAddress, IpEndpoint, IpProtocol, IpRepr};
-#[cfg(feature = "async")]
-use socket::WakerRegistration;
 #[cfg(feature = "async")]
 use core::task::Waker;
 
+use crate::{Error, Result};
+use crate::phy::{ChecksumCapabilities, DeviceCapabilities};
+use crate::socket::{Socket, SocketMeta, SocketHandle, PollAt};
+use crate::storage::{PacketBuffer, PacketMetadata};
+#[cfg(feature = "async")]
+use crate::socket::WakerRegistration;
+
 #[cfg(feature = "proto-ipv4")]
-use wire::{Ipv4Address, Ipv4Repr, Icmpv4Packet, Icmpv4Repr};
+use crate::wire::{Ipv4Address, Ipv4Repr, Icmpv4Packet, Icmpv4Repr};
 #[cfg(feature = "proto-ipv6")]
-use wire::{Ipv6Address, Ipv6Repr, Icmpv6Packet, Icmpv6Repr};
-use wire::IcmpRepr;
-use wire::{UdpPacket, UdpRepr};
+use crate::wire::{Ipv6Address, Ipv6Repr, Icmpv6Packet, Icmpv6Repr};
+use crate::wire::IcmpRepr;
+use crate::wire::{UdpPacket, UdpRepr};
+use crate::wire::{IpAddress, IpEndpoint, IpProtocol, IpRepr};
 
 /// Type of endpoint to bind the ICMP socket to. See [IcmpSocket::bind] for
 /// more details.
@@ -463,8 +463,8 @@ impl<'a, 'b> Into<Socket<'a, 'b>> for IcmpSocket<'a, 'b> {
 
 #[cfg(test)]
 mod tests_common {
-    pub use phy::DeviceCapabilities;
-    pub use wire::IpAddress;
+    pub use crate::phy::DeviceCapabilities;
+    pub use crate::wire::IpAddress;
     pub use super::*;
 
     pub fn buffer(packets: usize) -> IcmpSocketBuffer<'static, 'static> {
@@ -489,7 +489,7 @@ mod tests_common {
 mod test_ipv4 {
     use super::tests_common::*;
 
-    use wire::Icmpv4DstUnreachable;
+    use crate::wire::Icmpv4DstUnreachable;
 
     const REMOTE_IPV4: Ipv4Address = Ipv4Address([0x7f, 0x00, 0x00, 0x02]);
     const LOCAL_IPV4:  Ipv4Address = Ipv4Address([0x7f, 0x00, 0x00, 0x01]);
@@ -687,7 +687,7 @@ mod test_ipv4 {
 mod test_ipv6 {
     use super::tests_common::*;
 
-    use wire::Icmpv6DstUnreachable;
+    use crate::wire::Icmpv6DstUnreachable;
 
     const REMOTE_IPV6: Ipv6Address = Ipv6Address([0xfe, 0x80, 0, 0, 0, 0, 0, 0,
                                                   0, 0, 0, 0, 0, 0, 0, 1]);
diff --git a/src/socket/meta.rs b/src/socket/meta.rs
index 28537bf..b4e9fbb 100644
--- a/src/socket/meta.rs
+++ b/src/socket/meta.rs
@@ -1,6 +1,6 @@
-use wire::IpAddress;
-use super::{SocketHandle, PollAt};
-use time::{Duration, Instant};
+use crate::wire::IpAddress;
+use crate::socket::{SocketHandle, PollAt};
+use crate::time::{Duration, Instant};
 
 /// Neighbor dependency.
 ///
diff --git a/src/socket/mod.rs b/src/socket/mod.rs
index d9bf454..24afb5a 100644
--- a/src/socket/mod.rs
+++ b/src/socket/mod.rs
@@ -12,7 +12,7 @@ size for a buffer, allocate it, and let the networking stack use it.
 */
 
 use core::marker::PhantomData;
-use time::Instant;
+use crate::time::Instant;
 
 mod meta;
 #[cfg(feature = "socket-raw")]
diff --git a/src/socket/raw.rs b/src/socket/raw.rs
index 6eee47c..56b66d5 100644
--- a/src/socket/raw.rs
+++ b/src/socket/raw.rs
@@ -1,19 +1,20 @@
 use core::cmp::min;
-
-use {Error, Result};
-use phy::ChecksumCapabilities;
-use socket::{Socket, SocketMeta, SocketHandle, PollAt};
-use storage::{PacketBuffer, PacketMetadata};
-use wire::{IpVersion, IpRepr, IpProtocol};
-#[cfg(feature = "proto-ipv4")]
-use wire::{Ipv4Repr, Ipv4Packet};
-#[cfg(feature = "proto-ipv6")]
-use wire::{Ipv6Repr, Ipv6Packet};
-#[cfg(feature = "async")]
-use socket::WakerRegistration;
 #[cfg(feature = "async")]
 use core::task::Waker;
 
+use crate::{Error, Result};
+use crate::phy::ChecksumCapabilities;
+use crate::socket::{Socket, SocketMeta, SocketHandle, PollAt};
+use crate::storage::{PacketBuffer, PacketMetadata};
+#[cfg(feature = "async")]
+use crate::socket::WakerRegistration;
+
+use crate::wire::{IpVersion, IpRepr, IpProtocol};
+#[cfg(feature = "proto-ipv4")]
+use crate::wire::{Ipv4Repr, Ipv4Packet};
+#[cfg(feature = "proto-ipv6")]
+use crate::wire::{Ipv6Repr, Ipv6Packet};
+
 /// A UDP packet metadata.
 pub type RawPacketMetadata = PacketMetadata<()>;
 
@@ -304,11 +305,11 @@ impl<'a, 'b> Into<Socket<'a, 'b>> for RawSocket<'a, 'b> {
 
 #[cfg(test)]
 mod test {
-    use wire::IpRepr;
+    use crate::wire::IpRepr;
     #[cfg(feature = "proto-ipv4")]
-    use wire::{Ipv4Address, Ipv4Repr};
+    use crate::wire::{Ipv4Address, Ipv4Repr};
     #[cfg(feature = "proto-ipv6")]
-    use wire::{Ipv6Address, Ipv6Repr};
+    use crate::wire::{Ipv6Address, Ipv6Repr};
     use super::*;
 
     fn buffer(packets: usize) -> RawSocketBuffer<'static, 'static> {
diff --git a/src/socket/ref_.rs b/src/socket/ref_.rs
index db3205c..7d57ccf 100644
--- a/src/socket/ref_.rs
+++ b/src/socket/ref_.rs
@@ -1,13 +1,13 @@
 use core::ops::{Deref, DerefMut};
 
 #[cfg(feature = "socket-raw")]
-use socket::RawSocket;
+use crate::socket::RawSocket;
 #[cfg(all(feature = "socket-icmp", any(feature = "proto-ipv4", feature = "proto-ipv6")))]
-use socket::IcmpSocket;
+use crate::socket::IcmpSocket;
 #[cfg(feature = "socket-udp")]
-use socket::UdpSocket;
+use crate::socket::UdpSocket;
 #[cfg(feature = "socket-tcp")]
-use socket::TcpSocket;
+use crate::socket::TcpSocket;
 
 /// A trait for tracking a socket usage session.
 ///
diff --git a/src/socket/set.rs b/src/socket/set.rs
index 477b8a2..fd6d538 100644
--- a/src/socket/set.rs
+++ b/src/socket/set.rs
@@ -1,9 +1,9 @@
 use core::{fmt, slice};
 use managed::ManagedSlice;
 
-use super::{Socket, SocketRef, AnySocket};
+use crate::socket::{Socket, SocketRef, AnySocket};
 #[cfg(feature = "socket-tcp")]
-use super::TcpState;
+use crate::socket::TcpState;
 
 /// An item of a socket set.
 ///
diff --git a/src/socket/tcp.rs b/src/socket/tcp.rs
index 7b66ca0..d500428 100644
--- a/src/socket/tcp.rs
+++ b/src/socket/tcp.rs
@@ -3,18 +3,18 @@
 // a new feature.
 
 use core::{cmp, fmt, mem};
-
-use {Error, Result};
-use phy::DeviceCapabilities;
-use time::{Duration, Instant};
-use socket::{Socket, SocketMeta, SocketHandle, PollAt};
-use storage::{Assembler, RingBuffer};
-use wire::{IpProtocol, IpRepr, IpAddress, IpEndpoint, TcpSeqNumber, TcpRepr, TcpControl};
-#[cfg(feature = "async")]
-use socket::WakerRegistration;
 #[cfg(feature = "async")]
 use core::task::Waker;
 
+use crate::{Error, Result};
+use crate::phy::DeviceCapabilities;
+use crate::time::{Duration, Instant};
+use crate::socket::{Socket, SocketMeta, SocketHandle, PollAt};
+use crate::storage::{Assembler, RingBuffer};
+#[cfg(feature = "async")]
+use crate::socket::WakerRegistration;
+use crate::wire::{IpProtocol, IpRepr, IpAddress, IpEndpoint, TcpSeqNumber, TcpRepr, TcpControl};
+
 /// A TCP socket ring buffer.
 pub type SocketBuffer<'a> = RingBuffer<'a, u8>;
 
@@ -1802,8 +1802,8 @@ impl<'a> fmt::Write for TcpSocket<'a> {
 mod test {
     use core::i32;
     use std::vec::Vec;
-    use wire::{IpAddress, IpRepr, IpCidr};
-    use wire::ip::test::{MOCK_IP_ADDR_1, MOCK_IP_ADDR_2, MOCK_IP_ADDR_3, MOCK_UNSPECIFIED};
+    use crate::wire::{IpAddress, IpRepr, IpCidr};
+    use crate::wire::ip::test::{MOCK_IP_ADDR_1, MOCK_IP_ADDR_2, MOCK_IP_ADDR_3, MOCK_UNSPECIFIED};
     use super::*;
 
     // =========================================================================================//
@@ -1950,8 +1950,6 @@ mod test {
 
     #[cfg(feature = "log")]
     fn init_logger() {
-        extern crate log;
-
         struct Logger;
         static LOGGER: Logger = Logger;
 
diff --git a/src/socket/udp.rs b/src/socket/udp.rs
index 1099692..caf8cb4 100644
--- a/src/socket/udp.rs
+++ b/src/socket/udp.rs
@@ -1,14 +1,14 @@
 use core::cmp::min;
-
-use {Error, Result};
-use socket::{Socket, SocketMeta, SocketHandle, PollAt};
-use storage::{PacketBuffer, PacketMetadata};
-use wire::{IpProtocol, IpRepr, IpEndpoint, UdpRepr};
-#[cfg(feature = "async")]
-use socket::WakerRegistration;
 #[cfg(feature = "async")]
 use core::task::Waker;
 
+use crate::{Error, Result};
+use crate::socket::{Socket, SocketMeta, SocketHandle, PollAt};
+use crate::storage::{PacketBuffer, PacketMetadata};
+use crate::wire::{IpProtocol, IpRepr, IpEndpoint, UdpRepr};
+#[cfg(feature = "async")]
+use crate::socket::WakerRegistration;
+
 /// A UDP packet metadata.
 pub type UdpPacketMetadata = PacketMetadata<IpEndpoint>;
 
@@ -344,12 +344,12 @@ impl<'a, 'b> Into<Socket<'a, 'b>> for UdpSocket<'a, 'b> {
 
 #[cfg(test)]
 mod test {
-    use wire::{IpAddress, IpRepr, UdpRepr};
+    use crate::wire::{IpAddress, IpRepr, UdpRepr};
     #[cfg(feature = "proto-ipv4")]
-    use wire::Ipv4Repr;
+    use crate::wire::Ipv4Repr;
     #[cfg(feature = "proto-ipv6")]
-    use wire::Ipv6Repr;
-    use wire::ip::test::{MOCK_IP_ADDR_1, MOCK_IP_ADDR_2, MOCK_IP_ADDR_3};
+    use crate::wire::Ipv6Repr;
+    use crate::wire::ip::test::{MOCK_IP_ADDR_1, MOCK_IP_ADDR_2, MOCK_IP_ADDR_3};
     use super::*;
 
     fn buffer(packets: usize) -> UdpSocketBuffer<'static, 'static> {
diff --git a/src/storage/packet_buffer.rs b/src/storage/packet_buffer.rs
index 3bec8f1..ab91596 100644
--- a/src/storage/packet_buffer.rs
+++ b/src/storage/packet_buffer.rs
@@ -1,7 +1,7 @@
 use managed::ManagedSlice;
 
-use {Error, Result};
-use super::RingBuffer;
+use crate::{Error, Result};
+use crate::storage::RingBuffer;
 
 /// Size and header of a packet.
 #[derive(Debug, Clone, Copy)]
diff --git a/src/storage/ring_buffer.rs b/src/storage/ring_buffer.rs
index cf8244f..9b70b02 100644
--- a/src/storage/ring_buffer.rs
+++ b/src/storage/ring_buffer.rs
@@ -4,8 +4,8 @@
 use core::cmp;
 use managed::ManagedSlice;
 
-use {Error, Result};
-use super::Resettable;
+use crate::{Error, Result};
+use crate::storage::Resettable;
 
 /// A ring buffer.
 ///
diff --git a/src/wire/arp.rs b/src/wire/arp.rs
index b96d455..150adbf 100644
--- a/src/wire/arp.rs
+++ b/src/wire/arp.rs
@@ -1,7 +1,7 @@
 use core::fmt;
 use byteorder::{ByteOrder, NetworkEndian};
 
-use {Error, Result};
+use crate::{Error, Result};
 
 pub use super::EthernetProtocol as Protocol;
 
@@ -29,7 +29,7 @@ pub struct Packet<T: AsRef<[u8]>> {
 mod field {
     #![allow(non_snake_case)]
 
-    use wire::field::*;
+    use crate::wire::field::*;
 
     pub const HTYPE: Field = 0..2;
     pub const PTYPE: Field = 2..4;
@@ -248,7 +248,7 @@ impl<T: AsRef<[u8]>> AsRef<[u8]> for Packet<T> {
     }
 }
 
-use super::{EthernetAddress, Ipv4Address};
+use crate::wire::{EthernetAddress, Ipv4Address};
 
 /// A high-level representation of an Address Resolution Protocol packet.
 #[derive(Debug, PartialEq, Eq, Clone, Copy)]
@@ -356,7 +356,7 @@ impl fmt::Display for Repr {
     }
 }
 
-use super::pretty_print::{PrettyPrint, PrettyIndent};
+use crate::wire::pretty_print::{PrettyPrint, PrettyIndent};
 
 impl<T: AsRef<[u8]>> PrettyPrint for Packet<T> {
     fn pretty_print(buffer: &dyn AsRef<[u8]>, f: &mut fmt::Formatter,
diff --git a/src/wire/dhcpv4.rs b/src/wire/dhcpv4.rs
index 7062c9c..af51f57 100644
--- a/src/wire/dhcpv4.rs
+++ b/src/wire/dhcpv4.rs
@@ -2,9 +2,9 @@
 
 use byteorder::{ByteOrder, NetworkEndian};
 
-use {Error, Result};
-use super::{EthernetAddress, Ipv4Address};
-use super::arp::Hardware;
+use crate::{Error, Result};
+use crate::wire::{EthernetAddress, Ipv4Address};
+use crate::wire::arp::Hardware;
 
 const DHCP_MAGIC_NUMBER: u32 = 0x63825363;
 
@@ -199,7 +199,7 @@ pub(crate) mod field {
     #![allow(non_snake_case)]
     #![allow(unused)]
 
-    use wire::field::*;
+    use crate::wire::field::*;
 
     pub const OP: usize = 0;
     pub const HTYPE: usize = 1;
@@ -836,7 +836,7 @@ impl<'a> Repr<'a> {
 
 #[cfg(test)]
 mod test {
-    use wire::Ipv4Address;
+    use crate::wire::Ipv4Address;
     use super::*;
 
     const MAGIC_COOKIE: u32 = 0x63825363;
diff --git a/src/wire/ethernet.rs b/src/wire/ethernet.rs
index 4b69caf..449454a 100644
--- a/src/wire/ethernet.rs
+++ b/src/wire/ethernet.rs
@@ -1,7 +1,7 @@
 use core::fmt;
 use byteorder::{ByteOrder, NetworkEndian};
 
-use {Error, Result};
+use crate::{Error, Result};
 
 enum_with_unknown! {
     /// Ethernet protocol type.
@@ -83,7 +83,7 @@ pub struct Frame<T: AsRef<[u8]>> {
 }
 
 mod field {
-    use wire::field::*;
+    use crate::wire::field::*;
 
     pub const DESTINATION: Field =  0..6;
     pub const SOURCE:      Field =  6..12;
@@ -209,7 +209,7 @@ impl<T: AsRef<[u8]>> fmt::Display for Frame<T> {
     }
 }
 
-use super::pretty_print::{PrettyPrint, PrettyIndent};
+use crate::wire::pretty_print::{PrettyPrint, PrettyIndent};
 
 impl<T: AsRef<[u8]>> PrettyPrint for Frame<T> {
     fn pretty_print(buffer: &dyn AsRef<[u8]>, f: &mut fmt::Formatter,
diff --git a/src/wire/icmp.rs b/src/wire/icmp.rs
index 684ea5e..cf8400c 100644
--- a/src/wire/icmp.rs
+++ b/src/wire/icmp.rs
@@ -1,7 +1,7 @@
 #[cfg(feature = "proto-ipv4")]
-use super::icmpv4;
+use crate::wire::icmpv4;
 #[cfg(feature = "proto-ipv6")]
-use super::icmpv6;
+use crate::wire::icmpv6;
 
 #[derive(Clone, PartialEq, Eq, Debug)]
 pub enum Repr<'a> {
diff --git a/src/wire/icmpv4.rs b/src/wire/icmpv4.rs
index 0d71fbc..fae318a 100644
--- a/src/wire/icmpv4.rs
+++ b/src/wire/icmpv4.rs
@@ -1,10 +1,10 @@
 use core::{cmp, fmt};
 use byteorder::{ByteOrder, NetworkEndian};
 
-use {Error, Result};
-use phy::ChecksumCapabilities;
-use super::ip::checksum;
-use super::{Ipv4Packet, Ipv4Repr};
+use crate::{Error, Result};
+use crate::phy::ChecksumCapabilities;
+use crate::wire::ip::checksum;
+use crate::wire::{Ipv4Packet, Ipv4Repr};
 
 enum_with_unknown! {
     /// Internet protocol control message type.
@@ -172,7 +172,7 @@ pub struct Packet<T: AsRef<[u8]>> {
 }
 
 mod field {
-    use wire::field::*;
+    use crate::wire::field::*;
 
     pub const TYPE:       usize = 0;
     pub const CODE:       usize = 1;
@@ -531,7 +531,7 @@ impl<'a> fmt::Display for Repr<'a> {
     }
 }
 
-use super::pretty_print::{PrettyPrint, PrettyIndent};
+use crate::wire::pretty_print::{PrettyPrint, PrettyIndent};
 
 impl<T: AsRef<[u8]>> PrettyPrint for Packet<T> {
     fn pretty_print(buffer: &dyn AsRef<[u8]>, f: &mut fmt::Formatter,
diff --git a/src/wire/icmpv6.rs b/src/wire/icmpv6.rs
index d2c3cbc..c44ae5d 100644
--- a/src/wire/icmpv6.rs
+++ b/src/wire/icmpv6.rs
@@ -1,13 +1,13 @@
 use core::{cmp, fmt};
 use byteorder::{ByteOrder, NetworkEndian};
 
-use {Error, Result};
-use phy::ChecksumCapabilities;
-use super::ip::checksum;
-use super::{IpAddress, IpProtocol, Ipv6Packet, Ipv6Repr};
-use super::MldRepr;
+use crate::{Error, Result};
+use crate::phy::ChecksumCapabilities;
+use crate::wire::ip::checksum;
+use crate::wire::{IpAddress, IpProtocol, Ipv6Packet, Ipv6Repr};
+use crate::wire::MldRepr;
 #[cfg(feature = "ethernet")]
-use super::NdiscRepr;
+use crate::wire::NdiscRepr;
 
 enum_with_unknown! {
     /// Internet protocol control message type.
@@ -197,7 +197,7 @@ pub struct Packet<T: AsRef<[u8]>> {
 
 // Ranges and constants describing key boundaries in the ICMPv6 header.
 pub(super) mod field {
-    use wire::field::*;
+    use crate::wire::field::*;
 
     // ICMPv6: See https://tools.ietf.org/html/rfc4443
     pub const TYPE:              usize = 0;
@@ -739,8 +739,8 @@ impl<'a> Repr<'a> {
 
 #[cfg(test)]
 mod test {
-    use wire::{Ipv6Address, Ipv6Repr, IpProtocol};
-    use wire::ip::test::{MOCK_IP_ADDR_1, MOCK_IP_ADDR_2};
+    use crate::wire::{Ipv6Address, Ipv6Repr, IpProtocol};
+    use crate::wire::ip::test::{MOCK_IP_ADDR_1, MOCK_IP_ADDR_2};
     use super::*;
 
     static ECHO_PACKET_BYTES: [u8; 12] =
diff --git a/src/wire/igmp.rs b/src/wire/igmp.rs
index 64ad657..8fac535 100644
--- a/src/wire/igmp.rs
+++ b/src/wire/igmp.rs
@@ -1,11 +1,11 @@
 use core::fmt;
 use byteorder::{ByteOrder, NetworkEndian};
 
-use {Error, Result};
-use super::ip::checksum;
-use time::Duration;
+use crate::{Error, Result};
+use crate::wire::ip::checksum;
+use crate::time::Duration;
 
-use wire::Ipv4Address;
+use crate::wire::Ipv4Address;
 
 enum_with_unknown! {
     /// Internet Group Management Protocol v1/v2 message version/type.
@@ -28,7 +28,7 @@ pub struct Packet<T: AsRef<[u8]>> {
 }
 
 mod field {
-    use wire::field::*;
+    use crate::wire::field::*;
 
     pub const TYPE: usize = 0;
     pub const MAX_RESP_CODE: usize = 1;
@@ -355,7 +355,7 @@ impl<'a> fmt::Display for Repr {
     }
 }
 
-use super::pretty_print::{PrettyIndent, PrettyPrint};
+use crate::wire::pretty_print::{PrettyIndent, PrettyPrint};
 
 impl<T: AsRef<[u8]>> PrettyPrint for Packet<T> {
     fn pretty_print(buffer: &dyn AsRef<[u8]>,
diff --git a/src/wire/ip.rs b/src/wire/ip.rs
index bdc843c..d003a15 100644
--- a/src/wire/ip.rs
+++ b/src/wire/ip.rs
@@ -1,12 +1,12 @@
 use core::fmt;
 use core::convert::From;
 
-use {Error, Result};
-use phy::ChecksumCapabilities;
+use crate::{Error, Result};
+use crate::phy::ChecksumCapabilities;
 #[cfg(feature = "proto-ipv4")]
-use super::{Ipv4Address, Ipv4Packet, Ipv4Repr, Ipv4Cidr};
+use crate::wire::{Ipv4Address, Ipv4Packet, Ipv4Repr, Ipv4Cidr};
 #[cfg(feature = "proto-ipv6")]
-use super::{Ipv6Address, Ipv6Cidr, Ipv6Packet, Ipv6Repr};
+use crate::wire::{Ipv6Address, Ipv6Cidr, Ipv6Packet, Ipv6Repr};
 
 /// Internet protocol version.
 #[derive(Debug, Hash, PartialEq, Eq, PartialOrd, Ord, Clone, Copy)]
@@ -862,16 +862,16 @@ pub mod checksum {
     }
 }
 
-use super::pretty_print::PrettyIndent;
+use crate::wire::pretty_print::PrettyIndent;
 
 pub fn pretty_print_ip_payload<T: Into<Repr>>(f: &mut fmt::Formatter, indent: &mut PrettyIndent,
                                               ip_repr: T, payload: &[u8]) -> fmt::Result {
     #[cfg(feature = "proto-ipv4")]
-    use wire::Icmpv4Packet;
+    use crate::wire::Icmpv4Packet;
     #[cfg(feature = "proto-ipv4")]
     use super::pretty_print::PrettyPrint;
-    use wire::{TcpPacket, TcpRepr, UdpPacket, UdpRepr};
-    use wire::ip::checksum::format_checksum;
+    use crate::wire::{TcpPacket, TcpRepr, UdpPacket, UdpRepr};
+    use crate::wire::ip::checksum::format_checksum;
 
     let checksum_caps = ChecksumCapabilities::ignored();
     let repr = ip_repr.into();
@@ -953,9 +953,9 @@ pub(crate) mod test {
 
 
     use super::*;
-    use wire::{IpAddress, IpProtocol,IpCidr};
+    use crate::wire::{IpAddress, IpProtocol,IpCidr};
     #[cfg(feature = "proto-ipv4")]
-    use wire::{Ipv4Address, Ipv4Repr};
+    use crate::wire::{Ipv4Address, Ipv4Repr};
 
     macro_rules! generate_common_tests {
         ($name:ident, $repr:ident, $ip_repr:path, $ip_addr:path,
diff --git a/src/wire/ipv4.rs b/src/wire/ipv4.rs
index c2360cb..aab7e61 100644
--- a/src/wire/ipv4.rs
+++ b/src/wire/ipv4.rs
@@ -1,9 +1,9 @@
 use core::fmt;
 use byteorder::{ByteOrder, NetworkEndian};
 
-use {Error, Result};
-use phy::ChecksumCapabilities;
-use super::ip::{checksum, pretty_print_ip_payload};
+use crate::{Error, Result};
+use crate::phy::ChecksumCapabilities;
+use crate::wire::ip::{checksum, pretty_print_ip_payload};
 
 pub use super::IpProtocol as Protocol;
 
@@ -231,7 +231,7 @@ pub struct Packet<T: AsRef<[u8]>> {
 }
 
 mod field {
-    use wire::field::*;
+    use crate::wire::field::*;
 
     pub const VER_IHL:  usize = 0;
     pub const DSCP_ECN: usize = 1;
@@ -662,12 +662,12 @@ impl fmt::Display for Repr {
     }
 }
 
-use super::pretty_print::{PrettyPrint, PrettyIndent};
+use crate::wire::pretty_print::{PrettyPrint, PrettyIndent};
 
 impl<T: AsRef<[u8]>> PrettyPrint for Packet<T> {
     fn pretty_print(buffer: &dyn AsRef<[u8]>, f: &mut fmt::Formatter,
                     indent: &mut PrettyIndent) -> fmt::Result {
-        use wire::ip::checksum::format_checksum;
+        use crate::wire::ip::checksum::format_checksum;
 
         let checksum_caps = ChecksumCapabilities::ignored();
 
diff --git a/src/wire/ipv6.rs b/src/wire/ipv6.rs
index 89b1196..8d93cd8 100644
--- a/src/wire/ipv6.rs
+++ b/src/wire/ipv6.rs
@@ -3,9 +3,12 @@
 use core::fmt;
 use byteorder::{ByteOrder, NetworkEndian};
 
-use {Error, Result};
+use crate::{Error, Result};
+use crate::wire::ip::pretty_print_ip_payload;
+#[cfg(feature = "proto-ipv4")]
+use crate::wire::ipv4;
+
 pub use super::IpProtocol as Protocol;
-use super::ip::pretty_print_ip_payload;
 
 /// Minimum MTU required of all links supporting IPv6. See [RFC 8200 § 5].
 ///
@@ -144,9 +147,9 @@ impl Address {
 
     #[cfg(feature = "proto-ipv4")]
     /// Convert an IPv4 mapped IPv6 address to an IPv4 address.
-    pub fn as_ipv4(&self) -> Option<::wire::ipv4::Address> {
+    pub fn as_ipv4(&self) -> Option<ipv4::Address> {
         if self.is_ipv4_mapped() {
-            Some(::wire::ipv4::Address::new(self.0[12], self.0[13], self.0[14], self.0[15]))
+            Some(ipv4::Address::new(self.0[12], self.0[13], self.0[14], self.0[15]))
         } else {
             None
         }
@@ -254,8 +257,8 @@ impl fmt::Display for Address {
 
 #[cfg(feature = "proto-ipv4")]
 /// Convert the given IPv4 address into a IPv4-mapped IPv6 address
-impl From<::wire::ipv4::Address> for Address {
-    fn from(address: ::wire::ipv4::Address) -> Self {
+impl From<ipv4::Address> for Address {
+    fn from(address: ipv4::Address) -> Self {
         let octets = address.0;
         Address([0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0xff, 0xff,
                 octets[0], octets[1], octets[2], octets[3]])
@@ -356,7 +359,7 @@ pub struct Packet<T: AsRef<[u8]>> {
 //
 // See https://tools.ietf.org/html/rfc2460#section-3 for details.
 mod field {
-    use wire::field::*;
+    use crate::wire::field::*;
     // 4-bit version number, 8-bit traffic class, and the
     // 20-bit flow label.
     pub const VER_TC_FLOW: Field = 0..4;
@@ -647,7 +650,7 @@ impl fmt::Display for Repr {
     }
 }
 
-use super::pretty_print::{PrettyPrint, PrettyIndent};
+use crate::wire::pretty_print::{PrettyPrint, PrettyIndent};
 
 // TODO: This is very similar to the implementation for IPv4. Make
 // a way to have less copy and pasted code here.
@@ -673,13 +676,13 @@ impl<T: AsRef<[u8]>> PrettyPrint for Packet<T> {
 
 #[cfg(test)]
 mod test {
-    use Error;
+    use crate::Error;
     use super::{Address, Cidr};
     use super::{Packet, Protocol, Repr};
-    use wire::pretty_print::{PrettyPrinter};
+    use crate::wire::pretty_print::{PrettyPrinter};
 
     #[cfg(feature = "proto-ipv4")]
-    use wire::ipv4::Address as Ipv4Address;
+    use crate::wire::ipv4::Address as Ipv4Address;
 
     static LINK_LOCAL_ADDR: Address = Address([0xfe, 0x80, 0x00, 0x00,
                                                0x00, 0x00, 0x00, 0x00,
diff --git a/src/wire/ipv6fragment.rs b/src/wire/ipv6fragment.rs
index b5b641f..93a29b0 100644
--- a/src/wire/ipv6fragment.rs
+++ b/src/wire/ipv6fragment.rs
@@ -1,5 +1,5 @@
 use core::fmt;
-use {Error, Result};
+use crate::{Error, Result};
 
 use byteorder::{ByteOrder, NetworkEndian};
 
@@ -21,7 +21,7 @@ pub struct Header<T: AsRef<[u8]>> {
 //
 // See https://tools.ietf.org/html/rfc8200#section-4.5 for details.
 mod field {
-    use wire::field::*;
+    use crate::wire::field::*;
 
     // 8-bit identifier of the header immediately following this header.
     pub const NXT_HDR:          usize = 0;
diff --git a/src/wire/ipv6hopbyhop.rs b/src/wire/ipv6hopbyhop.rs
index 3eb115f..6327cea 100644
--- a/src/wire/ipv6hopbyhop.rs
+++ b/src/wire/ipv6hopbyhop.rs
@@ -1,7 +1,7 @@
 use core::fmt;
-use {Error, Result};
+use crate::{Error, Result};
 
-use super::ipv6option::Ipv6OptionsIterator;
+use crate::wire::ipv6option::Ipv6OptionsIterator;
 pub use super::IpProtocol as Protocol;
 
 /// A read/write wrapper around an IPv6 Hop-by-Hop Options Header.
@@ -27,7 +27,7 @@ pub struct Header<T: AsRef<[u8]>> {
 mod field {
     #![allow(non_snake_case)]
 
-    use wire::field::*;
+    use crate::wire::field::*;
 
     // Minimum size of the header.
     pub const MIN_HEADER_SIZE:  usize = 8;
diff --git a/src/wire/ipv6option.rs b/src/wire/ipv6option.rs
index 1cf4dee..d96969c 100644
--- a/src/wire/ipv6option.rs
+++ b/src/wire/ipv6option.rs
@@ -1,5 +1,5 @@
 use core::fmt;
-use {Error, Result};
+use crate::{Error, Result};
 
 enum_with_unknown! {
     /// IPv6 Extension Header Option Type
@@ -73,7 +73,7 @@ pub struct Ipv6Option<T: AsRef<[u8]>> {
 mod field {
     #![allow(non_snake_case)]
 
-    use wire::field::*;
+    use crate::wire::field::*;
 
     // 8-bit identifier of the type of option.
     pub const TYPE:     usize = 0;
diff --git a/src/wire/ipv6routing.rs b/src/wire/ipv6routing.rs
index 7956b47..d66793e 100644
--- a/src/wire/ipv6routing.rs
+++ b/src/wire/ipv6routing.rs
@@ -1,8 +1,8 @@
 use core::fmt;
-use {Error, Result};
+use crate::{Error, Result};
 
-use super::IpProtocol as Protocol;
-use super::Ipv6Address as Address;
+use crate::wire::IpProtocol as Protocol;
+use crate::wire::Ipv6Address as Address;
 
 enum_with_unknown! {
     /// IPv6 Extension Routing Header Routing Type
@@ -72,7 +72,7 @@ pub struct Header<T: AsRef<[u8]>> {
 mod field {
     #![allow(non_snake_case)]
 
-    use wire::field::*;
+    use crate::wire::field::*;
 
     // Minimum size of the header.
     pub const MIN_HEADER_SIZE:  usize = 4;
diff --git a/src/wire/mld.rs b/src/wire/mld.rs
index 9268293..1abbba9 100644
--- a/src/wire/mld.rs
+++ b/src/wire/mld.rs
@@ -6,9 +6,9 @@
 
 use byteorder::{ByteOrder, NetworkEndian};
 
-use {Error, Result};
-use super::icmpv6::{field, Message, Packet};
-use super::Ipv6Address;
+use crate::{Error, Result};
+use crate::wire::icmpv6::{field, Message, Packet};
+use crate::wire::Ipv6Address;
 
 enum_with_unknown! {
     /// MLDv2 Multicast Listener Report Record Type. See [RFC 3810 § 5.2.12] for
@@ -383,9 +383,9 @@ impl<'a> Repr<'a> {
 
 #[cfg(test)]
 mod test {
-    use phy::ChecksumCapabilities;
-    use wire::Icmpv6Repr;
-    use wire::icmpv6::Message;
+    use crate::phy::ChecksumCapabilities;
+    use crate::wire::Icmpv6Repr;
+    use crate::wire::icmpv6::Message;
     use super::*;
 
     static QUERY_PACKET_BYTES: [u8; 44] =
diff --git a/src/wire/ndisc.rs b/src/wire/ndisc.rs
index afaf0ce..20544b2 100644
--- a/src/wire/ndisc.rs
+++ b/src/wire/ndisc.rs
@@ -1,12 +1,13 @@
 use byteorder::{ByteOrder, NetworkEndian};
+use bitflags::bitflags;
 
-use {Error, Result};
-use super::icmpv6::{field, Message, Packet};
-use wire::{EthernetAddress, Ipv6Repr, Ipv6Packet};
-use wire::{NdiscOption, NdiscOptionRepr, NdiscOptionType};
-use wire::{NdiscPrefixInformation, NdiscRedirectedHeader};
-use time::Duration;
-use super::Ipv6Address;
+use crate::{Error, Result};
+use crate::wire::icmpv6::{field, Message, Packet};
+use crate::wire::{EthernetAddress, Ipv6Repr, Ipv6Packet};
+use crate::wire::{NdiscOption, NdiscOptionRepr, NdiscOptionType};
+use crate::wire::{NdiscPrefixInformation, NdiscRedirectedHeader};
+use crate::time::Duration;
+use crate::wire::Ipv6Address;
 
 bitflags! {
     pub struct RouterFlags: u8 {
@@ -462,10 +463,10 @@ impl<'a> Repr<'a> {
 
 #[cfg(test)]
 mod test {
-    use phy::ChecksumCapabilities;
+    use crate::phy::ChecksumCapabilities;
     use super::*;
-    use wire::Icmpv6Repr;
-    use wire::ip::test::{MOCK_IP_ADDR_1, MOCK_IP_ADDR_2};
+    use crate::wire::Icmpv6Repr;
+    use crate::wire::ip::test::{MOCK_IP_ADDR_1, MOCK_IP_ADDR_2};
 
     static ROUTER_ADVERT_BYTES: [u8; 24] =
         [0x86, 0x00, 0xa9, 0xde,
diff --git a/src/wire/ndiscoption.rs b/src/wire/ndiscoption.rs
index 0175f44..88b22f0 100644
--- a/src/wire/ndiscoption.rs
+++ b/src/wire/ndiscoption.rs
@@ -1,9 +1,10 @@
 use core::fmt;
 use byteorder::{NetworkEndian, ByteOrder};
+use bitflags::bitflags;
 
-use {Error, Result};
-use time::Duration;
-use wire::{EthernetAddress, Ipv6Address, Ipv6Packet, Ipv6Repr};
+use crate::{Error, Result};
+use crate::time::Duration;
+use crate::wire::{EthernetAddress, Ipv6Address, Ipv6Packet, Ipv6Repr};
 
 enum_with_unknown! {
     /// NDISC Option Type
@@ -61,7 +62,7 @@ pub struct NdiscOption<T: AsRef<[u8]>> {
 mod field {
     #![allow(non_snake_case)]
 
-    use wire::field::*;
+    use crate::wire::field::*;
 
     // 8-bit identifier of the type of option.
     pub const TYPE:          usize = 0;
@@ -587,7 +588,7 @@ impl<'a> fmt::Display for Repr<'a> {
     }
 }
 
-use super::pretty_print::{PrettyPrint, PrettyIndent};
+use crate::wire::pretty_print::{PrettyPrint, PrettyIndent};
 
 impl<T: AsRef<[u8]>> PrettyPrint for NdiscOption<T> {
     fn pretty_print(buffer: &dyn AsRef<[u8]>, f: &mut fmt::Formatter,
@@ -608,9 +609,9 @@ impl<T: AsRef<[u8]>> PrettyPrint for NdiscOption<T> {
 
 #[cfg(test)]
 mod test {
-    use Error;
-    use time::Duration;
-    use wire::{EthernetAddress, Ipv6Address};
+    use crate::Error;
+    use crate::time::Duration;
+    use crate::wire::{EthernetAddress, Ipv6Address};
     use super::{NdiscOption, Type, PrefixInfoFlags, PrefixInformation, Repr};
 
     static PREFIX_OPT_BYTES: [u8; 32] = [
diff --git a/src/wire/tcp.rs b/src/wire/tcp.rs
index 3f51ef9..205e4f0 100644
--- a/src/wire/tcp.rs
+++ b/src/wire/tcp.rs
@@ -1,10 +1,10 @@
 use core::{i32, ops, cmp, fmt};
 use byteorder::{ByteOrder, NetworkEndian};
 
-use {Error, Result};
-use phy::ChecksumCapabilities;
-use super::{IpProtocol, IpAddress};
-use super::ip::checksum;
+use crate::{Error, Result};
+use crate::phy::ChecksumCapabilities;
+use crate::wire::{IpProtocol, IpAddress};
+use crate::wire::ip::checksum;
 
 /// A TCP sequence number.
 ///
@@ -74,7 +74,7 @@ pub struct Packet<T: AsRef<[u8]>> {
 mod field {
     #![allow(non_snake_case)]
 
-    use wire::field::*;
+    use crate::wire::field::*;
 
     pub const SRC_PORT: Field = 0..2;
     pub const DST_PORT: Field = 2..4;
@@ -1009,7 +1009,7 @@ impl<'a> fmt::Display for Repr<'a> {
     }
 }
 
-use super::pretty_print::{PrettyPrint, PrettyIndent};
+use crate::wire::pretty_print::{PrettyPrint, PrettyIndent};
 
 impl<T: AsRef<[u8]>> PrettyPrint for Packet<T> {
     fn pretty_print(buffer: &dyn AsRef<[u8]>, f: &mut fmt::Formatter,
@@ -1024,7 +1024,7 @@ impl<T: AsRef<[u8]>> PrettyPrint for Packet<T> {
 #[cfg(test)]
 mod test {
     #[cfg(feature = "proto-ipv4")]
-    use wire::Ipv4Address;
+    use crate::wire::Ipv4Address;
     use super::*;
 
     #[cfg(feature = "proto-ipv4")]
diff --git a/src/wire/udp.rs b/src/wire/udp.rs
index b309f63..44bb578 100644
--- a/src/wire/udp.rs
+++ b/src/wire/udp.rs
@@ -1,10 +1,10 @@
 use core::fmt;
 use byteorder::{ByteOrder, NetworkEndian};
 
-use {Error, Result};
-use phy::ChecksumCapabilities;
-use super::{IpProtocol, IpAddress};
-use super::ip::checksum;
+use crate::{Error, Result};
+use crate::phy::ChecksumCapabilities;
+use crate::wire::{IpProtocol, IpAddress};
+use crate::wire::ip::checksum;
 
 /// A read/write wrapper around an User Datagram Protocol packet buffer.
 #[derive(Debug, PartialEq, Clone)]
@@ -15,7 +15,7 @@ pub struct Packet<T: AsRef<[u8]>> {
 mod field {
     #![allow(non_snake_case)]
 
-    use wire::field::*;
+    use crate::wire::field::*;
 
     pub const SRC_PORT: Field = 0..2;
     pub const DST_PORT: Field = 2..4;
@@ -272,7 +272,7 @@ impl<'a> fmt::Display for Repr<'a> {
     }
 }
 
-use super::pretty_print::{PrettyPrint, PrettyIndent};
+use crate::wire::pretty_print::{PrettyPrint, PrettyIndent};
 
 impl<T: AsRef<[u8]>> PrettyPrint for Packet<T> {
     fn pretty_print(buffer: &dyn AsRef<[u8]>, f: &mut fmt::Formatter,
@@ -287,7 +287,7 @@ impl<T: AsRef<[u8]>> PrettyPrint for Packet<T> {
 #[cfg(test)]
 mod test {
     #[cfg(feature = "proto-ipv4")]
-    use wire::Ipv4Address;
+    use crate::wire::Ipv4Address;
     use super::*;
 
     #[cfg(feature = "proto-ipv4")]
diff --git a/utils/packet2pcap.rs b/utils/packet2pcap.rs
index b821186..89b9906 100644
--- a/utils/packet2pcap.rs
+++ b/utils/packet2pcap.rs
@@ -1,6 +1,3 @@
-extern crate smoltcp;
-extern crate getopts;
-
 use std::cell::RefCell;
 use std::io::{self, Read, Write};
 use std::path::Path;