rust: various cleanups and move to Rust 2021

Cargo.toml

@@ -10,7 +10,7 @@ readme = "README.md"
 keywords = ["windows", "winapi", "util", "win"]
 license = "Unlicense/MIT"
 categories = ["os::windows-apis", "external-ffi-bindings"]
-edition = "2018"
+edition = "2021"
 
 [target.'cfg(windows)'.dependencies.winapi]
 version = "0.3"

src/console.rs

@@ -1,13 +1,16 @@
-use std::io;
-use std::mem;
-
-use winapi::shared::minwindef::WORD;
-use winapi::um::consoleapi::{GetConsoleMode, SetConsoleMode};
-use winapi::um::wincon::{
-    self, GetConsoleScreenBufferInfo, SetConsoleTextAttribute,
-    CONSOLE_SCREEN_BUFFER_INFO, FOREGROUND_BLUE as FG_BLUE,
-    FOREGROUND_GREEN as FG_GREEN, FOREGROUND_INTENSITY as FG_INTENSITY,
-    FOREGROUND_RED as FG_RED,
+use std::{io, mem};
+
+use winapi::{
+    shared::minwindef::WORD,
+    um::{
+        consoleapi::{GetConsoleMode, SetConsoleMode},
+        wincon::{
+            self, GetConsoleScreenBufferInfo, SetConsoleTextAttribute,
+            CONSOLE_SCREEN_BUFFER_INFO, FOREGROUND_BLUE as FG_BLUE,
+            FOREGROUND_GREEN as FG_GREEN,
+            FOREGROUND_INTENSITY as FG_INTENSITY, FOREGROUND_RED as FG_RED,
+        },
+    },
 };
 
 use crate::{AsHandleRef, HandleRef};
@@ -208,7 +211,7 @@ impl Console {
         let h = kind.handle();
         let info = screen_buffer_info(&h)?;
         let attr = TextAttributes::from_word(info.attributes());
-        Ok(Console { kind: kind, start_attr: attr, cur_attr: attr })
+        Ok(Console { kind, start_attr: attr, cur_attr: attr })
     }
 
     /// Create a new Console to stdout.

src/file.rs

@@ -1,13 +1,16 @@
-use std::io;
-use std::mem;
-
-use winapi::shared::minwindef::FILETIME;
-use winapi::shared::winerror::NO_ERROR;
-use winapi::um::errhandlingapi::GetLastError;
-use winapi::um::fileapi::{
-    GetFileInformationByHandle, GetFileType, BY_HANDLE_FILE_INFORMATION,
+use std::{io, mem};
+
+use winapi::{
+    shared::{minwindef::FILETIME, winerror::NO_ERROR},
+    um::{
+        errhandlingapi::GetLastError,
+        fileapi::{
+            GetFileInformationByHandle, GetFileType,
+            BY_HANDLE_FILE_INFORMATION,
+        },
+        winnt,
+    },
 };
-use winapi::um::winnt;
 
 use crate::AsHandleRef;
 

src/win.rs

@@ -1,10 +1,10 @@
-use std::fs::File;
-use std::io;
-use std::os::windows::io::{
-    AsRawHandle, FromRawHandle, IntoRawHandle, RawHandle,
+use std::{
+    fs::File,
+    io,
+    os::windows::io::{AsRawHandle, FromRawHandle, IntoRawHandle, RawHandle},
+    path::Path,
+    process,
 };
-use std::path::Path;
-use std::process;
 
 /// A handle represents an owned and valid Windows handle to a file-like
 /// object.