Prepare for Rust 2018.

  - This is the result of running `cargo fix --edition`, with some
    manual adjustments.

  - The vast majority of changes merely qualify module paths with
    'crate::'.

  - Two instances of adding an anonymous pattern to a trait's
    function.

  - `async` is a keyword in Rust 2018, and hence it needs to be
    escaped (e.g. in the case of the net::r#async module).

  - The manual adjustments were needed due to various shortcomings of
    the analysis employed by `cargo fix`, e.g. unexpanded macros,
    procedural macros, lalrpop grammars.

3 files changed, 5 insertions, 5 deletions

diff --git a/openpgp/src/serialize/writer/mod.rs b/openpgp/src/serialize/writer/mod.rs
index a02339b0..a982d8ac 100644
--- a/openpgp/src/serialize/writer/mod.rs
+++ b/openpgp/src/serialize/writer/mod.rs
@@ -12,12 +12,12 @@ pub use self::writer_deflate::{ZIP, ZLIB};
 use std::fmt;
 use std::io;
 
-use crypto::{aead, symmetric};
-use constants::{
+use crate::crypto::{aead, symmetric};
+use crate::constants::{
     AEADAlgorithm,
     SymmetricAlgorithm,
 };
-use {
+use crate::{
     Result,
     crypto::SessionKey,
 };
diff --git a/openpgp/src/serialize/writer/writer_bzip2.rs b/openpgp/src/serialize/writer/writer_bzip2.rs
index 513e95e6..8f51fe18 100644
--- a/openpgp/src/serialize/writer/writer_bzip2.rs
+++ b/openpgp/src/serialize/writer/writer_bzip2.rs
@@ -3,7 +3,7 @@ use bzip2::write::BzEncoder;
 use std::fmt;
 use std::io;
 
-use Result;
+use crate::Result;
 use super::{Generic, Stack, BoxStack, Stackable};
 
 /// BZing writer.
diff --git a/openpgp/src/serialize/writer/writer_deflate.rs b/openpgp/src/serialize/writer/writer_deflate.rs
index 64e547f1..a0e1ea60 100644
--- a/openpgp/src/serialize/writer/writer_deflate.rs
+++ b/openpgp/src/serialize/writer/writer_deflate.rs
@@ -3,7 +3,7 @@ use flate2::write::{DeflateEncoder, ZlibEncoder};
 use std::fmt;
 use std::io;
 
-use Result;
+use crate::Result;
 use super::{Generic, Stack, BoxStack, Stackable};
 
 /// ZIPing writer.