edition: switch to Rust 2018

Cargo.toml

@@ -11,6 +11,7 @@ keywords = ["directory", "recursive", "walk", "iterator"]
 categories = ["filesystem"]
 license = "Unlicense/MIT"
 exclude = ["/ci/*", "/.travis.yml", "/appveyor.yml"]
+edition = "2018"
 
 [badges]
 travis-ci = { repository = "BurntSushi/walkdir" }

src/dent.rs

@@ -3,8 +3,8 @@ use std::fmt;
 use std::fs::{self, FileType};
 use std::path::{Path, PathBuf};
 
-use error::Error;
-use Result;
+use crate::error::Error;
+use crate::Result;
 
 /// A directory entry.
 ///
@@ -352,7 +352,7 @@ impl Clone for DirEntry {
 }
 
 impl fmt::Debug for DirEntry {
-    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         write!(f, "DirEntry({:?})", self.path)
     }
 }

src/error.rs

@@ -3,7 +3,7 @@ use std::fmt;
 use std::io;
 use std::path::{Path, PathBuf};
 
-use DirEntry;
+use crate::DirEntry;
 
 /// An error produced by recursively walking a directory.
 ///
@@ -221,7 +221,7 @@ impl error::Error for Error {
 }
 
 impl fmt::Display for Error {
-    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         match self.inner {
             ErrorInner::Io { path: None, ref err } => err.fmt(f),
             ErrorInner::Io { path: Some(ref path), ref err } => write!(

src/lib.rs

@@ -107,16 +107,7 @@ for entry in walker.filter_entry(|e| !is_hidden(e)) {
 #![allow(unknown_lints)]
 
 #[cfg(test)]
-#[macro_use]
-extern crate doc_comment;
-extern crate same_file;
-#[cfg(windows)]
-extern crate winapi;
-#[cfg(windows)]
-extern crate winapi_util;
-
-#[cfg(test)]
-doctest!("../README.md");
+doc_comment::doctest!("../README.md");
 
 use std::cmp::{min, Ordering};
 use std::fmt;
@@ -128,10 +119,10 @@ use std::vec;
 
 use same_file::Handle;
 
-pub use dent::DirEntry;
+pub use crate::dent::DirEntry;
 #[cfg(unix)]
-pub use dent::DirEntryExt;
-pub use error::Error;
+pub use crate::dent::DirEntryExt;
+pub use crate::error::Error;
 
 mod dent;
 mod error;
@@ -262,7 +253,10 @@ struct WalkDirOptions {
 }
 
 impl fmt::Debug for WalkDirOptions {
-    fn fmt(&self, f: &mut fmt::Formatter) -> result::Result<(), fmt::Error> {
+    fn fmt(
+        &self,
+        f: &mut fmt::Formatter<'_>,
+    ) -> result::Result<(), fmt::Error> {
         let sorter_str = if self.sorter.is_some() {
             // FnMut isn't `Debug`
             "Some(...)"

src/tests/recursive.rs

@@ -1,12 +1,12 @@
 use std::fs;
 use std::path::PathBuf;
 
-use tests::util::Dir;
-use WalkDir;
+use crate::tests::util::Dir;
+use crate::WalkDir;
 
 #[test]
 fn send_sync_traits() {
-    use {FilterEntry, IntoIter};
+    use crate::{FilterEntry, IntoIter};
 
     fn assert_send<T: Send>() {}
     fn assert_sync<T: Sync>() {}

src/tests/util.rs

@@ -5,7 +5,7 @@ use std::io;
 use std::path::{Path, PathBuf};
 use std::result;
 
-use {DirEntry, Error};
+use crate::{DirEntry, Error};
 
 /// Create an error from a format!-like syntax.
 #[macro_export]