Clippy and fmt.

src/backends/speech_dispatcher.rs

@@ -9,7 +9,7 @@ use crate::{Backend, Error, Features};
 pub struct SpeechDispatcher(Connection);
 
 impl SpeechDispatcher {
-    pub fn new() -> impl Backend {
+    pub fn new() -> Self {
         info!("Initializing SpeechDispatcher backend");
         let connection = speech_dispatcher::Connection::open("tts", "tts", "tts", Mode::Single);
         SpeechDispatcher(connection)

src/backends/tolk.rs

@@ -7,7 +7,7 @@ use crate::{Backend, Error, Features};
 pub struct Tolk(TolkPtr);
 
 impl Tolk {
-    pub fn new() -> impl Backend {
+    pub fn new() -> Self {
         info!("Initializing Tolk backend");
         let tolk = TolkPtr::new();
         tolk.try_sapi(true);

src/backends/web.rs

@@ -13,7 +13,7 @@ pub struct Web {
 }
 
 impl Web {
-    pub fn new() -> Result<impl Backend, Error> {
+    pub fn new() -> Result<Self, Error> {
         info!("Initializing Web backend");
         Ok(Web {
             rate: 25,

src/lib.rs

@@ -81,7 +81,7 @@ impl TTS {
             Backends::Tolk => {
                 let tts = backends::Tolk::new();
                 Ok(TTS(Box::new(tts)))
-            },
+            }
         }
     }