diff --git a/bindings/rust/Cargo.lock b/bindings/rust/Cargo.lock
index 7a56610c0..586ad8200 100644
--- a/bindings/rust/Cargo.lock
+++ b/bindings/rust/Cargo.lock
@@ -1,3 +1,5 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
 [[package]]
 name = "bitflags"
 version = "1.1.0"
diff --git a/bindings/rust/proton-sys/build.rs b/bindings/rust/proton-sys/build.rs
index f76754355..58d46da4a 100644
--- a/bindings/rust/proton-sys/build.rs
+++ b/bindings/rust/proton-sys/build.rs
@@ -1,56 +1,49 @@
-extern crate cc;
-extern crate pkg_config;
-
-use std::{
-    env,
-    path::{Path, PathBuf},
-    process::Command,
-};
+use std::{env, path::PathBuf};
 
 fn main() {
-    let proton_path = PathBuf::from("../../../ui");
+  let proton_path = PathBuf::from("../../../ui");
 
-    let mut build = cc::Build::new();
+  let mut build = cc::Build::new();
 
+  build
+    .include(&proton_path)
+    .file("proton.c")
+    .flag_if_supported("-std=c11")
+    .flag_if_supported("-w");
+
+  if env::var("DEBUG").is_err() {
+    build.define("NDEBUG", None);
+  } else {
+    build.define("DEBUG", None);
+  }
+
+  let target = env::var("TARGET").unwrap();
+
+  if target.contains("windows") {
+    build.define("WEBVIEW_WINAPI", None);
+    for &lib in &["ole32", "comctl32", "oleaut32", "uuid", "gdi32"] {
+      println!("cargo:rustc-link-lib={}", lib);
+    }
+  } else if target.contains("linux") || target.contains("bsd") {
+    let webkit = pkg_config::Config::new()
+      .atleast_version("2.8")
+      .probe("webkit2gtk-4.0")
+      .unwrap();
+
+    for path in webkit.include_paths {
+      build.include(path);
+    }
+    build.define("WEBVIEW_GTK", None);
+  } else if target.contains("apple") {
     build
-        .include(&proton_path)
-        .file("proton.c")
-        .flag_if_supported("-std=c11")
-        .flag_if_supported("-w");
+      .define("WEBVIEW_COCOA", None)
+      .flag("-x")
+      .flag("objective-c");
+    println!("cargo:rustc-link-lib=framework=Cocoa");
+    println!("cargo:rustc-link-lib=framework=WebKit");
+  } else {
+    panic!("unsupported target");
+  }
 
-    if env::var("DEBUG").is_err() {
-        build.define("NDEBUG", None);
-    } else {
-        build.define("DEBUG", None);
-    }
-
-    let target = env::var("TARGET").unwrap();
-
-    if target.contains("windows") {
-        build.define("WEBVIEW_WINAPI", None);
-        for &lib in &["ole32", "comctl32", "oleaut32", "uuid", "gdi32"] {
-            println!("cargo:rustc-link-lib={}", lib);
-        }
-    } else if target.contains("linux") || target.contains("bsd") {
-        let webkit = pkg_config::Config::new()
-            .atleast_version("2.8")
-            .probe("webkit2gtk-4.0")
-            .unwrap();
-
-        for path in webkit.include_paths {
-            build.include(path);
-        }
-        build.define("WEBVIEW_GTK", None);
-    } else if target.contains("apple") {
-        build
-            .define("WEBVIEW_COCOA", None)
-            .flag("-x")
-            .flag("objective-c");
-        println!("cargo:rustc-link-lib=framework=Cocoa");
-        println!("cargo:rustc-link-lib=framework=WebKit");
-    } else {
-        panic!("unsupported target");
-    }
-
-    build.compile("proton");
+  build.compile("proton");
 }
diff --git a/bindings/rust/proton-sys/lib.rs b/bindings/rust/proton-sys/lib.rs
index 5e37fbaf0..7f2894a71 100644
--- a/bindings/rust/proton-sys/lib.rs
+++ b/bindings/rust/proton-sys/lib.rs
@@ -6,41 +6,61 @@ extern crate bitflags;
 use std::os::raw::*;
 
 // https://doc.rust-lang.org/nomicon/ffi.html#representing-opaque-structs
-#[repr(C)] pub struct CWebView { _private: [u8; 0] }
+#[repr(C)]
+pub struct CWebView {
+  _private: [u8; 0],
+}
 
 type ErasedExternalInvokeFn = extern "C" fn(webview: *mut CWebView, arg: *const c_char);
 type ErasedDispatchFn = extern "C" fn(webview: *mut CWebView, arg: *mut c_void);
 
 #[repr(C)]
 pub enum DialogType {
-	Open  = 0,
-	Save  = 1,
-	Alert = 2,
+  Open = 0,
+  Save = 1,
+  Alert = 2,
 }
 
 bitflags! {
-	#[repr(C)]
-	pub struct DialogFlags: u32 {
-		const FILE      = 0b0000;
-		const DIRECTORY = 0b0001;
-		const INFO      = 0b0010;
-		const WARNING   = 0b0100;
-		const ERROR     = 0b0110;
-	}
+  #[repr(C)]
+  pub struct DialogFlags: u32 {
+    const FILE      = 0b0000;
+    const DIRECTORY = 0b0001;
+    const INFO      = 0b0010;
+    const WARNING   = 0b0100;
+    const ERROR     = 0b0110;
+  }
 }
 
-extern {
-	pub fn wrapper_webview_free(this: *mut CWebView);
-	pub fn wrapper_webview_new(title: *const c_char, url: *const c_char, width: c_int, height: c_int, resizable: c_int, debug: c_int, external_invoke_cb: Option<ErasedExternalInvokeFn>, userdata: *mut c_void) -> *mut CWebView;
-	pub fn webview_loop(this: *mut CWebView, blocking: c_int) -> c_int;
-	pub fn webview_terminate(this: *mut CWebView);
-	pub fn webview_exit(this: *mut CWebView);
-	pub fn wrapper_webview_get_userdata(this: *mut CWebView) -> *mut c_void;
-	pub fn webview_dispatch(this: *mut CWebView, f: Option<ErasedDispatchFn>, arg: *mut c_void);
-	pub fn webview_eval(this: *mut CWebView, js: *const c_char) -> c_int;
-	pub fn webview_inject_css(this: *mut CWebView, css: *const c_char) -> c_int;
-	pub fn webview_set_title(this: *mut CWebView, title: *const c_char);
-	pub fn webview_set_fullscreen(this: *mut CWebView, fullscreen: c_int);
-	pub fn webview_set_color(this: *mut CWebView, red: u8, green: u8, blue: u8, alpha: u8);
-	pub fn webview_dialog(this: *mut CWebView, dialog_type: DialogType, flags: DialogFlags, title: *const c_char, arg: *const c_char, result: *mut c_char, result_size: usize);
+extern "C" {
+  pub fn wrapper_webview_free(this: *mut CWebView);
+  pub fn wrapper_webview_new(
+    title: *const c_char,
+    url: *const c_char,
+    width: c_int,
+    height: c_int,
+    resizable: c_int,
+    debug: c_int,
+    external_invoke_cb: Option<ErasedExternalInvokeFn>,
+    userdata: *mut c_void,
+  ) -> *mut CWebView;
+  pub fn webview_loop(this: *mut CWebView, blocking: c_int) -> c_int;
+  pub fn webview_terminate(this: *mut CWebView);
+  pub fn webview_exit(this: *mut CWebView);
+  pub fn wrapper_webview_get_userdata(this: *mut CWebView) -> *mut c_void;
+  pub fn webview_dispatch(this: *mut CWebView, f: Option<ErasedDispatchFn>, arg: *mut c_void);
+  pub fn webview_eval(this: *mut CWebView, js: *const c_char) -> c_int;
+  pub fn webview_inject_css(this: *mut CWebView, css: *const c_char) -> c_int;
+  pub fn webview_set_title(this: *mut CWebView, title: *const c_char);
+  pub fn webview_set_fullscreen(this: *mut CWebView, fullscreen: c_int);
+  pub fn webview_set_color(this: *mut CWebView, red: u8, green: u8, blue: u8, alpha: u8);
+  pub fn webview_dialog(
+    this: *mut CWebView,
+    dialog_type: DialogType,
+    flags: DialogFlags,
+    title: *const c_char,
+    arg: *const c_char,
+    result: *mut c_char,
+    result_size: usize,
+  );
 }
diff --git a/bindings/rust/src/error.rs b/bindings/rust/src/error.rs
index 07ed11a67..2ef26a899 100644
--- a/bindings/rust/src/error.rs
+++ b/bindings/rust/src/error.rs
@@ -25,7 +25,7 @@ pub enum Error {
   /// WebView was dropped.
   Dispatch,
   /// An user-specified error occurred. For use inside invoke and dispatch closures.
-  Custom(Box<CustomError>),
+  Custom(Box<dyn CustomError>),
 }
 
 impl Error {
@@ -36,7 +36,7 @@ impl Error {
 }
 
 impl error::Error for Error {
-  fn cause(&self) -> Option<&error::Error> {
+  fn cause(&self) -> Option<&dyn error::Error> {
     match self {
       Error::NulByte(cause) => Some(cause),
       _ => None,
@@ -53,7 +53,7 @@ impl error::Error for Error {
 }
 
 impl Display for Error {
-  fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+  fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
     match self {
       Error::UninitializedField(field) => write!(f, "Required field uninitialized: {}.", field),
       Error::Initialization => write!(f, "Webview failed to initialize."),
diff --git a/bindings/rust/src/escape.rs b/bindings/rust/src/escape.rs
index e949cd9f4..e681ffde7 100644
--- a/bindings/rust/src/escape.rs
+++ b/bindings/rust/src/escape.rs
@@ -16,7 +16,7 @@ use std::fmt::{self, Write};
 ///
 /// view.eval(&format!("callback({});", web_view::escape(string)));
 /// ```
-pub fn escape(string: &str) -> Escaper {
+pub fn escape(string: &str) -> Escaper<'_> {
   Escaper(string)
 }
 
@@ -37,7 +37,7 @@ const SPECIAL: &[char] = &[
 ];
 
 impl<'a> fmt::Display for Escaper<'a> {
-  fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+  fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
     let &Escaper(mut string) = self;
 
     f.write_char('\'')?;
diff --git a/bindings/rust/src/lib.rs b/bindings/rust/src/lib.rs
index bdeb9aa60..230ad963c 100644
--- a/bindings/rust/src/lib.rs
+++ b/bindings/rust/src/lib.rs
@@ -1,6 +1,6 @@
-extern crate boxfnonce;
+
 extern crate proton_sys as ffi;
-extern crate urlencoding;
+
 
 mod color;
 mod dialog;
@@ -75,7 +75,7 @@ pub struct WebViewBuilder<'a, T: 'a, I, C> {
 
 impl<'a, T: 'a, I, C> Default for WebViewBuilder<'a, T, I, C>
 where
-  I: FnMut(&mut WebView<T>, &str) -> WVResult + 'a,
+  I: FnMut(&mut WebView<'_, T>, &str) -> WVResult + 'a,
   C: AsRef<str>,
 {
   fn default() -> Self {
@@ -99,7 +99,7 @@ where
 
 impl<'a, T: 'a, I, C> WebViewBuilder<'a, T, I, C>
 where
-  I: FnMut(&mut WebView<T>, &str) -> WVResult + 'a,
+  I: FnMut(&mut WebView<'_, T>, &str) -> WVResult + 'a,
   C: AsRef<str>,
 {
   /// Alias for [`WebViewBuilder::default()`].
@@ -215,7 +215,7 @@ where
 /// [`WebViewBuilder::default()`]: struct.WebviewBuilder.html#impl-Default
 pub fn builder<'a, T, I, C>() -> WebViewBuilder<'a, T, I, C>
 where
-  I: FnMut(&mut WebView<T>, &str) -> WVResult + 'a,
+  I: FnMut(&mut WebView<'_, T>, &str) -> WVResult + 'a,
   C: AsRef<str>,
 {
   WebViewBuilder::new()
@@ -224,7 +224,7 @@ where
 struct UserData<'a, T> {
   inner: T,
   live: Arc<RwLock<()>>,
-  invoke_handler: Box<FnMut(&mut WebView<T>, &str) -> WVResult + 'a>,
+  invoke_handler: Box<dyn FnMut(&mut WebView<'_, T>, &str) -> WVResult + 'a>,
   result: WVResult,
 }
 
@@ -234,7 +234,7 @@ struct UserData<'a, T> {
 ///
 /// [`WebViewBuilder`]: struct.WebViewBuilder.html
 #[derive(Debug)]
-pub struct WebView<'a, T: 'a> {
+pub struct WebView<'a, T> {
   inner: *mut CWebView,
   _phantom: PhantomData<&'a mut T>,
 }
@@ -252,7 +252,7 @@ impl<'a, T> WebView<'a, T> {
     invoke_handler: I,
   ) -> WVResult<WebView<'a, T>>
   where
-    I: FnMut(&mut WebView<T>, &str) -> WVResult + 'a,
+    I: FnMut(&mut WebView<'_, T>, &str) -> WVResult + 'a,
   {
     let user_data = Box::new(UserData {
       inner: user_data,
@@ -275,7 +275,7 @@ impl<'a, T> WebView<'a, T> {
       );
 
       if inner.is_null() {
-        Box::<UserData<T>>::from_raw(user_data_ptr);
+        Box::<UserData<'_, T>>::from_raw(user_data_ptr);
         Err(Error::Initialization)
       } else {
         Ok(WebView::from_ptr(inner))
@@ -473,7 +473,7 @@ impl<T> Handle<T> {
   /// [`step()`]: struct.WebView.html#method.step
   pub fn dispatch<F>(&self, f: F) -> WVResult
   where
-    F: FnOnce(&mut WebView<T>) -> WVResult + Send + 'static,
+    F: FnOnce(&mut WebView<'_, T>) -> WVResult + Send + 'static,
   {
     // Abort if WebView has been dropped. Otherwise, keep it alive until closure has been
     // dispatched.
@@ -509,7 +509,7 @@ extern "C" fn ffi_dispatch_handler<T>(webview: *mut CWebView, arg: *mut c_void)
     let mut handle = mem::ManuallyDrop::new(WebView::<T>::from_ptr(webview));
     let result = {
       let callback =
-        Box::<SendBoxFnOnce<'static, (&mut WebView<T>,), WVResult>>::from_raw(arg as _);
+        Box::<SendBoxFnOnce<'static, (&mut WebView<'_, T>,), WVResult>>::from_raw(arg as _);
       callback.call(&mut handle)
     };
     handle.user_data_wrapper_mut().result = result;
diff --git a/lib/rust/Cargo.lock b/lib/rust/Cargo.lock
new file mode 100644
index 000000000..a74ef31e8
--- /dev/null
+++ b/lib/rust/Cargo.lock
@@ -0,0 +1,2001 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+[[package]]
+name = "adler32"
+version = "1.0.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
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+]
+
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+
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+]
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diff --git a/lib/rust/Cargo.toml b/lib/rust/Cargo.toml
index 96d323fb5..880c939e9 100644
--- a/lib/rust/Cargo.toml
+++ b/lib/rust/Cargo.toml
@@ -26,3 +26,15 @@ tar = "0.4"
 flate2 = "1"
 hyper-old-types = "0.11.0"
 sysinfo = "0.9"
+
+[features]
+api = []
+all-api = []
+readTextFile = []
+readBinaryFile = []
+writeFile = []
+listFiles = []
+listDirs = []
+setTitle = []
+execute = []
+
diff --git a/lib/rust/src/api.rs b/lib/rust/src/api.rs
new file mode 100644
index 000000000..eb1ec05a3
--- /dev/null
+++ b/lib/rust/src/api.rs
@@ -0,0 +1,75 @@
+mod cmd;
+
+use proton_ui::WebView;
+
+#[allow(unused_variables)]
+pub fn handler<T: 'static>(webview: &mut WebView<'_, T>, arg: &str) -> bool {
+  #[cfg(feature = "api")]
+  {
+    use cmd::Cmd::*;
+    match serde_json::from_str(arg) {
+      Err(_) => false,
+      Ok(command) => {
+        match command {
+          #[cfg(any(feature = "all-api", feature = "readTextFile"))]
+          ReadTextFile {
+            path,
+            callback,
+            error,
+          } => {
+            super::file_system::read_text_file(webview, path, callback, error);
+          }
+          #[cfg(any(feature = "all-api", feature = "readBinaryFile"))]
+          ReadBinaryFile {
+            path,
+            callback,
+            error,
+          } => {
+            super::file_system::read_binary_file(webview, path, callback, error);
+          }
+          #[cfg(any(feature = "all-api", feature = "writeFile"))]
+          WriteFile {
+            file,
+            contents,
+            callback,
+            error,
+          } => {
+            super::file_system::write_file(webview, file, contents, callback, error);
+          }
+          #[cfg(any(feature = "all-api", feature = "listDirs"))]
+          ListDirs {
+            path,
+            callback,
+            error,
+          } => {
+            super::file_system::list_dirs(webview, path, callback, error);
+          }
+          #[cfg(any(feature = "all-api", feature = "listFiles"))]
+          ListFiles {
+            path,
+            callback,
+            error,
+          } => {
+            super::file_system::list(webview, path, callback, error);
+          }
+          #[cfg(any(feature = "all-api", feature = "setTitle"))]
+          SetTitle { title } => {
+            webview.set_title(&title).unwrap();
+          }
+          #[cfg(any(feature = "all-api", feature = "execute"))]
+          Execute {
+            command,
+            args,
+            callback,
+            error,
+          } => {
+            super::command::call(webview, command, args, callback, error);
+          }
+        }
+        true
+      }
+    }
+  }
+  #[cfg(not(feature = "api"))]
+  false
+}
diff --git a/lib/rust/src/api/cmd.rs b/lib/rust/src/api/cmd.rs
index 1891a1e77..09efa7042 100644
--- a/lib/rust/src/api/cmd.rs
+++ b/lib/rust/src/api/cmd.rs
@@ -1,37 +1,42 @@
 #[derive(Deserialize)]
 #[serde(tag = "cmd", rename_all = "camelCase")]
+#[cfg(feature = "api")]
 pub enum Cmd {
-  Init,
-  ReadAsString {
+  #[cfg(any(feature = "all-api", feature = "readTextFile"))]
+  ReadTextFile {
     path: String,
     callback: String,
     error: String,
   },
-  ReadAsBinary {
+  #[cfg(any(feature = "all-api", feature = "readBinaryFile"))]
+  ReadBinaryFile {
     path: String,
     callback: String,
     error: String,
   },
-  Write {
+  #[cfg(any(feature = "all-api", feature = "writeFile"))]
+  WriteFile {
     file: String,
     contents: String,
     callback: String,
     error: String,
   },
-  List {
+  #[cfg(any(feature = "all-api", feature = "listFiles"))]
+  ListFiles {
     path: String,
     callback: String,
     error: String,
   },
+  #[cfg(any(feature = "all-api", feature = "listDirs"))]
   ListDirs {
     path: String,
     callback: String,
     error: String,
   },
-  SetTitle {
-    title: String,
-  },
-  Call {
+  #[cfg(any(feature = "all-api", feature = "setTitle"))]
+  SetTitle { title: String },
+  #[cfg(any(feature = "all-api", feature = "execute"))]
+  Execute {
     command: String,
     args: Vec<String>,
     callback: String,
diff --git a/lib/rust/src/api/mod.rs b/lib/rust/src/api/mod.rs
deleted file mode 100644
index a7dbf6d11..000000000
--- a/lib/rust/src/api/mod.rs
+++ /dev/null
@@ -1,63 +0,0 @@
-mod cmd;
-
-use proton_ui::WebView;
-
-pub fn handler<T: 'static>(webview: &mut WebView<T>, arg: &str) -> bool {
-  use cmd::Cmd::*;
-  match serde_json::from_str(arg) {
-    Err(_) => false,
-    Ok(command) => {
-      match command {
-        Init => (),
-        ReadAsString {
-          path,
-          callback,
-          error,
-        } => {
-          super::file_system::read_text_file(webview, path, callback, error);
-        }
-        ReadAsBinary {
-          path,
-          callback,
-          error,
-        } => {
-          super::file_system::read_binary_file(webview, path, callback, error);
-        }
-        Write {
-          file,
-          contents,
-          callback,
-          error,
-        } => {
-          super::file_system::write_file(webview, file, contents, callback, error);
-        }
-        ListDirs {
-          path,
-          callback,
-          error,
-        } => {
-          super::file_system::list_dirs(webview, path, callback, error);
-        }
-        List {
-          path,
-          callback,
-          error,
-        } => {
-          super::file_system::list(webview, path, callback, error);
-        }
-        SetTitle { title } => {
-          webview.set_title(&title).unwrap();
-        }
-        Call {
-          command,
-          args,
-          callback,
-          error,
-        } => {
-          super::command::call(webview, command, args, callback, error);
-        }
-      }
-      true
-    }
-  }
-}
diff --git a/lib/rust/src/command.rs b/lib/rust/src/command.rs
index d4ad38a7a..76f3b6079 100755
--- a/lib/rust/src/command.rs
+++ b/lib/rust/src/command.rs
@@ -59,7 +59,7 @@ pub fn spawn_relative_command(
 }
 
 pub fn call<T: 'static>(
-  webview: &mut WebView<T>,
+  webview: &mut WebView<'_, T>,
   command: String,
   args: Vec<String>,
   callback: String,
diff --git a/lib/rust/src/dir/mod.rs b/lib/rust/src/dir.rs
old mode 100755
new mode 100644
similarity index 97%
rename from lib/rust/src/dir/mod.rs
rename to lib/rust/src/dir.rs
index 079e2675a..ee1401bf9
--- a/lib/rust/src/dir/mod.rs
+++ b/lib/rust/src/dir.rs
@@ -1,5 +1,5 @@
-extern crate dirs;
-extern crate tempfile;
+
+use tempfile;
 
 mod utils;
 use ignore::Walk;
diff --git a/lib/rust/src/file/mod.rs b/lib/rust/src/file.rs
similarity index 93%
rename from lib/rust/src/file/mod.rs
rename to lib/rust/src/file.rs
index c81d4040d..98e0fd140 100644
--- a/lib/rust/src/file/mod.rs
+++ b/lib/rust/src/file.rs
@@ -1,7 +1,5 @@
 use std::fs;
 
-extern crate serde_json;
-
 mod error;
 mod extract;
 mod file_move;
diff --git a/lib/rust/src/file/error.rs b/lib/rust/src/file/error.rs
index d9a198516..c8dec2574 100644
--- a/lib/rust/src/file/error.rs
+++ b/lib/rust/src/file/error.rs
@@ -9,7 +9,7 @@ pub enum Error {
 }
 
 impl std::fmt::Display for Error {
-  fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
+  fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
     use Error::*;
     match *self {
       Extract(ref s) => write!(f, "ExtractError: {}", s),
@@ -24,7 +24,7 @@ impl std::error::Error for Error {
     "File Error"
   }
 
-  fn cause(&self) -> Option<&std::error::Error> {
+  fn cause(&self) -> Option<&dyn std::error::Error> {
     use Error::*;
     Some(match *self {
       Io(ref e) => e,
diff --git a/lib/rust/src/file/extract.rs b/lib/rust/src/file/extract.rs
index 1e80bf759..4a943ac92 100644
--- a/lib/rust/src/file/extract.rs
+++ b/lib/rust/src/file/extract.rs
@@ -1,9 +1,9 @@
-extern crate either;
-extern crate flate2;
-extern crate tar;
-extern crate zip;
+use either;
+use flate2;
+use tar;
+use zip;
 
-use super::error::*;
+use crate::file::error::*;
 use either::Either;
 use std::fs;
 use std::io;
diff --git a/lib/rust/src/file/file_move.rs b/lib/rust/src/file/file_move.rs
index c11c622d1..eaeabe980 100644
--- a/lib/rust/src/file/file_move.rs
+++ b/lib/rust/src/file/file_move.rs
@@ -1,7 +1,7 @@
 use std::fs;
 use std::path;
 
-use super::error::*;
+use crate::file::error::*;
 
 /// Moves a file from the given path to the specified destination.
 ///
diff --git a/lib/rust/src/file_system.rs b/lib/rust/src/file_system.rs
index 11450d58c..2dd7cabdc 100755
--- a/lib/rust/src/file_system.rs
+++ b/lib/rust/src/file_system.rs
@@ -1,13 +1,18 @@
 use proton_ui::WebView;
 
-use super::dir;
-use super::file;
-use super::run_async;
+use crate::dir;
+use crate::file;
+use crate::run_async;
 
 use std::fs::File;
 use std::io::Write;
 
-pub fn list<T: 'static>(webview: &mut WebView<T>, path: String, callback: String, error: String) {
+pub fn list<T: 'static>(
+  webview: &mut WebView<'_, T>,
+  path: String,
+  callback: String,
+  error: String,
+) {
   run_async(
     webview,
     move || {
@@ -20,7 +25,7 @@ pub fn list<T: 'static>(webview: &mut WebView<T>, path: String, callback: String
 }
 
 pub fn list_dirs<T: 'static>(
-  webview: &mut WebView<T>,
+  webview: &mut WebView<'_, T>,
   path: String,
   callback: String,
   error: String,
@@ -37,7 +42,7 @@ pub fn list_dirs<T: 'static>(
 }
 
 pub fn write_file<T: 'static>(
-  webview: &mut WebView<T>,
+  webview: &mut WebView<'_, T>,
   file: String,
   contents: String,
   callback: String,
@@ -60,7 +65,7 @@ pub fn write_file<T: 'static>(
 }
 
 pub fn read_text_file<T: 'static>(
-  webview: &mut WebView<T>,
+  webview: &mut WebView<'_, T>,
   path: String,
   callback: String,
   error: String,
@@ -80,7 +85,7 @@ pub fn read_text_file<T: 'static>(
 }
 
 pub fn read_binary_file<T: 'static>(
-  webview: &mut WebView<T>,
+  webview: &mut WebView<'_, T>,
   path: String,
   callback: String,
   error: String,
diff --git a/lib/rust/src/http/mod.rs b/lib/rust/src/http.rs
similarity index 97%
rename from lib/rust/src/http/mod.rs
rename to lib/rust/src/http.rs
index 0097e64ee..573776c5b 100644
--- a/lib/rust/src/http/mod.rs
+++ b/lib/rust/src/http.rs
@@ -1,5 +1,5 @@
-extern crate pbr;
-extern crate reqwest;
+use pbr;
+use reqwest;
 
 use serde::Serialize;
 use std::io;
diff --git a/lib/rust/src/http/error.rs b/lib/rust/src/http/error.rs
index 4ac9ffe91..90a712e48 100644
--- a/lib/rust/src/http/error.rs
+++ b/lib/rust/src/http/error.rs
@@ -11,7 +11,7 @@ pub enum Error {
 }
 
 impl std::fmt::Display for Error {
-  fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
+  fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
     use Error::*;
     match *self {
       Download(ref s) => write!(f, "DownloadError: {}", s),
@@ -27,7 +27,7 @@ impl std::error::Error for Error {
     "Http Error"
   }
 
-  fn cause(&self) -> Option<&std::error::Error> {
+  fn cause(&self) -> Option<&dyn std::error::Error> {
     use Error::*;
     Some(match *self {
       Json(ref e) => e,
diff --git a/lib/rust/src/lib.rs b/lib/rust/src/lib.rs
index 2ad400f4b..57d46ba2b 100644
--- a/lib/rust/src/lib.rs
+++ b/lib/rust/src/lib.rs
@@ -1,4 +1,3 @@
-extern crate threadpool;
 #[macro_use]
 extern crate serde_derive;
 
@@ -18,7 +17,6 @@ pub mod tcp;
 pub mod updater;
 pub mod version;
 
-extern crate proton_ui;
 use proton_ui::WebView;
 
 use threadpool::ThreadPool;
@@ -26,7 +24,7 @@ use threadpool::ThreadPool;
 thread_local!(static POOL: ThreadPool = ThreadPool::new(4));
 
 pub fn run_async<T: 'static, F: FnOnce() -> Result<String, String> + Send + 'static>(
-  webview: &mut WebView<T>,
+  webview: &mut WebView<'_, T>,
   what: F,
   callback: String,
   error: String,
diff --git a/lib/rust/src/platform/mod.rs b/lib/rust/src/platform.rs
similarity index 100%
rename from lib/rust/src/platform/mod.rs
rename to lib/rust/src/platform.rs
diff --git a/lib/rust/src/platform/error.rs b/lib/rust/src/platform/error.rs
index e8413d5e0..35016c258 100644
--- a/lib/rust/src/platform/error.rs
+++ b/lib/rust/src/platform/error.rs
@@ -8,7 +8,7 @@ pub enum Error {
 }
 
 impl std::fmt::Display for Error {
-  fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
+  fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
     use Error::*;
     match *self {
       Arch(ref s) => write!(f, "ArchError: {}", s),
@@ -23,7 +23,7 @@ impl std::error::Error for Error {
     "Platform Error"
   }
 
-  fn cause(&self) -> Option<&std::error::Error> {
+  fn cause(&self) -> Option<&dyn std::error::Error> {
     return None;
   }
 }
diff --git a/lib/rust/src/process.rs b/lib/rust/src/process.rs
index dcaa7dca1..c423b7fc2 100644
--- a/lib/rust/src/process.rs
+++ b/lib/rust/src/process.rs
@@ -1,4 +1,4 @@
-extern crate sysinfo;
+use sysinfo;
 
 pub use sysinfo::{Process, ProcessExt, Signal, System, SystemExt};
 
diff --git a/lib/rust/src/tcp.rs b/lib/rust/src/tcp.rs
index 433413004..6c7b3a7fa 100644
--- a/lib/rust/src/tcp.rs
+++ b/lib/rust/src/tcp.rs
@@ -1,6 +1,6 @@
 use std::net::TcpListener;
 
-extern crate rand;
+use rand;
 
 use rand::distributions::{Distribution, Uniform};
 
diff --git a/lib/rust/src/updater/mod.rs b/lib/rust/src/updater.rs
similarity index 98%
rename from lib/rust/src/updater/mod.rs
rename to lib/rust/src/updater.rs
index bbac888a4..f366d24d8 100644
--- a/lib/rust/src/updater/mod.rs
+++ b/lib/rust/src/updater.rs
@@ -1,11 +1,9 @@
-extern crate hyper_old_types;
-
 use std::env;
 use std::fs;
 use std::path::PathBuf;
 
-use super::file::{Extract, Move};
-use super::http;
+use crate::file::{Extract, Move};
+use crate::http;
 
 pub mod github;
 
diff --git a/lib/rust/src/updater/error.rs b/lib/rust/src/updater/error.rs
index 5476ecccd..b942497b6 100644
--- a/lib/rust/src/updater/error.rs
+++ b/lib/rust/src/updater/error.rs
@@ -1,6 +1,6 @@
-use super::super::file;
-use super::super::http;
-use super::super::version;
+use crate::file;
+use crate::http;
+use crate::version;
 use reqwest;
 use std;
 use zip::result::ZipError;
@@ -18,7 +18,7 @@ pub enum Error {
 }
 
 impl std::fmt::Display for Error {
-  fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
+  fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
     use Error::*;
     match *self {
       Updater(ref s) => write!(f, "UpdaterError: {}", s),
@@ -38,7 +38,7 @@ impl std::error::Error for Error {
     "Updater Error"
   }
 
-  fn cause(&self) -> Option<&std::error::Error> {
+  fn cause(&self) -> Option<&dyn std::error::Error> {
     use Error::*;
     Some(match *self {
       Io(ref e) => e,
diff --git a/lib/rust/src/updater/github/mod.rs b/lib/rust/src/updater/github.rs
similarity index 95%
rename from lib/rust/src/updater/github/mod.rs
rename to lib/rust/src/updater/github.rs
index ba41cf1c0..ca81dcd0d 100644
--- a/lib/rust/src/updater/github/mod.rs
+++ b/lib/rust/src/updater/github.rs
@@ -1,8 +1,8 @@
 mod release;
-pub use super::error::Error;
+pub use crate::updater::error::Error;
 pub use release::*;
 
-use super::super::http;
+use crate::http;
 
 pub fn get_latest_release(repo_owner: &str, repo_name: &str) -> Result<Release, Error> {
   set_ssl_vars!();
diff --git a/lib/rust/src/updater/github/release.rs b/lib/rust/src/updater/github/release.rs
index 79c98469e..6874a9869 100644
--- a/lib/rust/src/updater/github/release.rs
+++ b/lib/rust/src/updater/github/release.rs
@@ -1,4 +1,4 @@
-use super::super::error::*;
+use crate::updater::error::*;
 use hyper_old_types::header::{LinkValue, RelationType};
 use serde_json;
 
diff --git a/lib/rust/src/version/mod.rs b/lib/rust/src/version.rs
similarity index 100%
rename from lib/rust/src/version/mod.rs
rename to lib/rust/src/version.rs
diff --git a/lib/rust/src/version/error.rs b/lib/rust/src/version/error.rs
index 1b084e60c..ffbbea8f8 100644
--- a/lib/rust/src/version/error.rs
+++ b/lib/rust/src/version/error.rs
@@ -7,7 +7,7 @@ pub enum Error {
 }
 
 impl std::fmt::Display for Error {
-  fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
+  fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
     use Error::*;
     match *self {
       SemVer(ref e) => write!(f, "SemVerError: {}", e),
@@ -20,7 +20,7 @@ impl std::error::Error for Error {
     "Version Error"
   }
 
-  fn cause(&self) -> Option<&std::error::Error> {
+  fn cause(&self) -> Option<&dyn std::error::Error> {
     use Error::*;
     Some(match *self {
       SemVer(ref e) => e,
diff --git a/tools/rust/cargo-proton-bundle/Cargo.lock b/tools/rust/cargo-proton-bundle/Cargo.lock
index bd437d345..af547bd82 100644
--- a/tools/rust/cargo-proton-bundle/Cargo.lock
+++ b/tools/rust/cargo-proton-bundle/Cargo.lock
@@ -1,3 +1,5 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
 [[package]]
 name = "adler32"
 version = "1.0.3"
@@ -448,7 +450,7 @@ dependencies = [
  "crc32fast 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.60 (registry+https://github.com/rust-lang/crates.io-index)",
  "miniz-sys 0.1.12 (registry+https://github.com/rust-lang/crates.io-index)",
- "miniz_oxide_c_api 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "miniz_oxide_c_api 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -630,7 +632,7 @@ dependencies = [
 
 [[package]]
 name = "miniz_oxide"
-version = "0.2.2"
+version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "adler32 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -638,13 +640,13 @@ dependencies = [
 
 [[package]]
 name = "miniz_oxide_c_api"
-version = "0.2.2"
+version = "0.2.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cc 1.0.37 (registry+https://github.com/rust-lang/crates.io-index)",
  "crc32fast 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.60 (registry+https://github.com/rust-lang/crates.io-index)",
- "miniz_oxide 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "miniz_oxide 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1443,8 +1445,8 @@ dependencies = [
 "checksum memmap 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)" = "e2ffa2c986de11a9df78620c01eeaaf27d94d3ff02bf81bfcca953102dd0c6ff"
 "checksum memoffset 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "0f9dc261e2b62d7a622bf416ea3c5245cdd5d9a7fcc428c0d06804dfce1775b3"
 "checksum miniz-sys 0.1.12 (registry+https://github.com/rust-lang/crates.io-index)" = "1e9e3ae51cea1576ceba0dde3d484d30e6e5b86dee0b2d412fe3a16a15c98202"
-"checksum miniz_oxide 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "b6c3756d66cf286314d5f7ebe74886188a9a92f5eee68b06f31ac2b4f314c99d"
-"checksum miniz_oxide_c_api 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "5b78ca5446dd9fe0dab00e058731b6b08a8c1d2b9cdb8efb10876e24e9ae2494"
+"checksum miniz_oxide 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "c061edee74a88eb35d876ce88b94d77a0448a201de111c244b70d047f5820516"
+"checksum miniz_oxide_c_api 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)" = "6c675792957b0d19933816c4e1d56663c341dd9bfa31cb2140ff2267c1d8ecf4"
 "checksum msi 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "a20bdea5e04f55fae0d8f89e88beec71822f2d63f61487ff2205d9d05b677923"
 "checksum nodrop 0.1.13 (registry+https://github.com/rust-lang/crates.io-index)" = "2f9667ddcc6cc8a43afc9b7917599d7216aa09c463919ea32c59ed6cac8bc945"
 "checksum num-integer 0.1.41 (registry+https://github.com/rust-lang/crates.io-index)" = "b85e541ef8255f6cf42bbfe4ef361305c6c135d10919ecc26126c4e5ae94bc09"
diff --git a/tools/rust/cargo-proton-bundle/src/bundle/mod.rs b/tools/rust/cargo-proton-bundle/src/bundle.rs
similarity index 100%
rename from tools/rust/cargo-proton-bundle/src/bundle/mod.rs
rename to tools/rust/cargo-proton-bundle/src/bundle.rs
diff --git a/tools/rust/cargo-proton-bundle/src/bundle/category.rs b/tools/rust/cargo-proton-bundle/src/bundle/category.rs
index 2e4345862..7b8644ef5 100644
--- a/tools/rust/cargo-proton-bundle/src/bundle/category.rs
+++ b/tools/rust/cargo-proton-bundle/src/bundle/category.rs
@@ -236,7 +236,7 @@ struct AppCategoryVisitor {
 impl<'d> serde::de::Visitor<'d> for AppCategoryVisitor {
   type Value = AppCategory;
 
-  fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
+  fn expecting(&self, formatter: &mut fmt::Formatter<'_>) -> fmt::Result {
     match self.did_you_mean {
       Some(string) => write!(
         formatter,
diff --git a/tools/rust/cargo-proton-bundle/src/bundle/common.rs b/tools/rust/cargo-proton-bundle/src/bundle/common.rs
index d8c1f738e..6ef83e55a 100644
--- a/tools/rust/cargo-proton-bundle/src/bundle/common.rs
+++ b/tools/rust/cargo-proton-bundle/src/bundle/common.rs
@@ -1,3 +1,4 @@
+use crate::ResultExt;
 use std;
 use std::ffi::OsStr;
 use std::fs::{self, File};
@@ -5,7 +6,6 @@ use std::io::{self, BufWriter, Write};
 use std::path::{Component, Path, PathBuf};
 use term;
 use walkdir;
-use crate::ResultExt;
 
 /// Returns true if the path has a filename indicating that it is a high-desity
 /// "retina" icon.  Specifically, returns true the the file stem ends with
diff --git a/tools/rust/cargo-proton-bundle/src/bundle/deb_bundle.rs b/tools/rust/cargo-proton-bundle/src/bundle/deb_bundle.rs
index 7a6f7fef1..c684d9fc2 100644
--- a/tools/rust/cargo-proton-bundle/src/bundle/deb_bundle.rs
+++ b/tools/rust/cargo-proton-bundle/src/bundle/deb_bundle.rs
@@ -19,6 +19,7 @@
 // generate postinst or prerm files.
 
 use super::common;
+use crate::{ResultExt, Settings};
 use ar;
 use icns;
 use image::png::{PNGDecoder, PNGEncoder};
@@ -32,7 +33,6 @@ use std::io::{self, Write};
 use std::path::{Path, PathBuf};
 use tar;
 use walkdir::WalkDir;
-use crate::{ResultExt, Settings};
 
 pub fn bundle_project(settings: &Settings) -> crate::Result<Vec<PathBuf>> {
   let arch = match settings.binary_arch() {
diff --git a/tools/rust/cargo-proton-bundle/src/bundle/ios_bundle.rs b/tools/rust/cargo-proton-bundle/src/bundle/ios_bundle.rs
index 3784a0a89..b5b4a4aaf 100644
--- a/tools/rust/cargo-proton-bundle/src/bundle/ios_bundle.rs
+++ b/tools/rust/cargo-proton-bundle/src/bundle/ios_bundle.rs
@@ -9,6 +9,7 @@
 // explanation.
 
 use super::common;
+use crate::{ResultExt, Settings};
 use icns;
 use image::png::{PNGDecoder, PNGEncoder};
 use image::{self, GenericImage, ImageDecoder};
@@ -17,7 +18,6 @@ use std::ffi::OsStr;
 use std::fs::{self, File};
 use std::io::Write;
 use std::path::{Path, PathBuf};
-use crate::{ResultExt, Settings};
 
 pub fn bundle_project(settings: &Settings) -> crate::Result<Vec<PathBuf>> {
   common::print_warning("iOS bundle support is still experimental.")?;
diff --git a/tools/rust/cargo-proton-bundle/src/bundle/msi_bundle.rs b/tools/rust/cargo-proton-bundle/src/bundle/msi_bundle.rs
index ed5117276..7ca5211fa 100644
--- a/tools/rust/cargo-proton-bundle/src/bundle/msi_bundle.rs
+++ b/tools/rust/cargo-proton-bundle/src/bundle/msi_bundle.rs
@@ -1,5 +1,6 @@
 use super::common;
 use super::settings::Settings;
+use crate::ResultExt;
 use cab;
 use msi;
 use std;
@@ -9,7 +10,6 @@ use std::fs;
 use std::io::{self, Write};
 use std::path::{Path, PathBuf};
 use uuid::Uuid;
-use crate::ResultExt;
 
 type Package = msi::Package<fs::File>;
 
@@ -319,7 +319,10 @@ fn divide_resources_into_cabinets(mut resources: Vec<ResourceInfo>) -> Vec<Cabin
 
 // Creates the CAB archives within the package that contain the binary
 // execuable and all the resource files.
-fn generate_resource_cabinets(package: &mut Package, cabinets: &[CabinetInfo]) -> crate::Result<()> {
+fn generate_resource_cabinets(
+  package: &mut Package,
+  cabinets: &[CabinetInfo],
+) -> crate::Result<()> {
   for cabinet_info in cabinets.iter() {
     let mut builder = cab::CabinetBuilder::new();
     let mut file_map = HashMap::<String, &Path>::new();
@@ -351,7 +354,10 @@ fn generate_resource_cabinets(package: &mut Package, cabinets: &[CabinetInfo]) -
 }
 
 // Creates and populates the `Directory` database table for the package.
-fn create_directory_table(package: &mut Package, directories: &[DirectoryInfo]) -> crate::Result<()> {
+fn create_directory_table(
+  package: &mut Package,
+  directories: &[DirectoryInfo],
+) -> crate::Result<()> {
   package.create_table(
     "Directory",
     vec![
diff --git a/tools/rust/cargo-proton-bundle/src/bundle/osx_bundle.rs b/tools/rust/cargo-proton-bundle/src/bundle/osx_bundle.rs
index ec8bda721..7c1c49372 100644
--- a/tools/rust/cargo-proton-bundle/src/bundle/osx_bundle.rs
+++ b/tools/rust/cargo-proton-bundle/src/bundle/osx_bundle.rs
@@ -18,6 +18,7 @@
 // files into the `Contents` directory of the bundle.
 
 use super::common;
+use crate::{ResultExt, Settings};
 use chrono;
 use dirs;
 use icns;
@@ -28,7 +29,6 @@ use std::fs::{self, File};
 use std::io::prelude::*;
 use std::io::{self, BufWriter};
 use std::path::{Path, PathBuf};
-use crate::{ResultExt, Settings};
 
 pub fn bundle_project(settings: &Settings) -> crate::Result<Vec<PathBuf>> {
   let app_bundle_name = format!("{}.app", settings.bundle_name());
@@ -232,7 +232,10 @@ fn copy_frameworks_to_bundle(bundle_directory: &Path, settings: &Settings) -> cr
 /// Given a list of icon files, try to produce an ICNS file in the resources
 /// directory and return the path to it.  Returns `Ok(None)` if no usable icons
 /// were provided.
-fn create_icns_file(resources_dir: &PathBuf, settings: &Settings) -> crate::Result<Option<PathBuf>> {
+fn create_icns_file(
+  resources_dir: &PathBuf,
+  settings: &Settings,
+) -> crate::Result<Option<PathBuf>> {
   if settings.icon_files().count() == 0 {
     return Ok(None);
   }
diff --git a/tools/rust/cargo-proton-bundle/src/bundle/rpm_bundle.rs b/tools/rust/cargo-proton-bundle/src/bundle/rpm_bundle.rs
index 3e808b44a..f11b26756 100644
--- a/tools/rust/cargo-proton-bundle/src/bundle/rpm_bundle.rs
+++ b/tools/rust/cargo-proton-bundle/src/bundle/rpm_bundle.rs
@@ -1,5 +1,5 @@
-use std::path::PathBuf;
 use crate::Settings;
+use std::path::PathBuf;
 
 pub fn bundle_project(_settings: &Settings) -> crate::Result<Vec<PathBuf>> {
   unimplemented!();
diff --git a/tools/rust/cargo-proton-bundle/src/bundle/settings.rs b/tools/rust/cargo-proton-bundle/src/bundle/settings.rs
index 44244d49f..ef4088601 100644
--- a/tools/rust/cargo-proton-bundle/src/bundle/settings.rs
+++ b/tools/rust/cargo-proton-bundle/src/bundle/settings.rs
@@ -138,7 +138,7 @@ impl CargoSettings {
 }
 
 impl Settings {
-  pub fn new(current_dir: PathBuf, matches: & ArgMatches) -> crate::Result<Self> {
+  pub fn new(current_dir: PathBuf, matches: &ArgMatches<'_>) -> crate::Result<Self> {
     let package_type = match matches.value_of("format") {
       Some(name) => match PackageType::from_short_name(name) {
         Some(package_type) => Some(package_type),
@@ -159,7 +159,13 @@ impl Settings {
       None => None,
     };
     let features = if matches.is_present("features") {
-      Some(matches.values_of("features").unwrap().map(|s| s.to_string()).collect())
+      Some(
+        matches
+          .values_of("features")
+          .unwrap()
+          .map(|s| s.to_string())
+          .collect(),
+      )
     } else {
       None
     };
@@ -347,7 +353,7 @@ impl Settings {
   }
 
   /// Returns an iterator over the icon files to be used for this bundle.
-  pub fn icon_files(&self) -> ResourcePaths {
+  pub fn icon_files(&self) -> ResourcePaths<'_> {
     match self.bundle_settings.icon {
       Some(ref paths) => ResourcePaths::new(paths.as_slice(), false),
       None => ResourcePaths::new(&[], false),
@@ -356,7 +362,7 @@ impl Settings {
 
   /// Returns an iterator over the resource files to be included in this
   /// bundle.
-  pub fn resource_files(&self) -> ResourcePaths {
+  pub fn resource_files(&self) -> ResourcePaths<'_> {
     match self.bundle_settings.resources {
       Some(ref paths) => ResourcePaths::new(paths.as_slice(), true),
       None => ResourcePaths::new(&[], true),
diff --git a/tools/rust/cargo-proton-bundle/src/main.rs b/tools/rust/cargo-proton-bundle/src/main.rs
index 94338a444..cb5bc1a75 100644
--- a/tools/rust/cargo-proton-bundle/src/main.rs
+++ b/tools/rust/cargo-proton-bundle/src/main.rs
@@ -1,27 +1,11 @@
-extern crate ar;
-extern crate cab;
-extern crate chrono;
 #[macro_use]
 extern crate clap;
-extern crate dirs;
+
 #[macro_use]
 extern crate error_chain;
-extern crate glob;
-extern crate icns;
-extern crate image;
-extern crate libflate;
-extern crate md5;
-extern crate msi;
-extern crate serde;
+
 #[macro_use]
 extern crate serde_derive;
-extern crate strsim;
-extern crate tar;
-extern crate target_build_utils;
-extern crate term;
-extern crate toml;
-extern crate uuid;
-extern crate walkdir;
 
 #[cfg(test)]
 extern crate tempfile;
@@ -69,7 +53,7 @@ fn build_project_if_unbuilt(settings: &Settings) -> crate::Result<()> {
   match settings.build_features() {
     Some(features) => {
       args.push(format!("--features={}", features.join(" ")));
-    },
+    }
     None => {}
   }