diff --git a/.rustfmt.toml b/.rustfmt.toml
index 17bc1efd..c8cbdc5e 100644
--- a/.rustfmt.toml
+++ b/.rustfmt.toml
@@ -1,4 +1,3 @@
-binop_separator = "Back"
 fn_params_layout = "Compressed"
 newline_style = "Unix"
 reorder_imports = false
diff --git a/src/client.rs b/src/client.rs
index 35032262..17abddfd 100644
--- a/src/client.rs
+++ b/src/client.rs
@@ -174,7 +174,7 @@ impl Client {
                 Err(ErrorKind::BinanceError(error).into())
             }
             s => {
-                bail!(format!("Received response: {:?}", s));
+                bail!("Received response: {:?}", s);
             }
         }
     }
diff --git a/src/futures/websockets.rs b/src/futures/websockets.rs
index 0742acf5..926d8cd8 100755
--- a/src/futures/websockets.rs
+++ b/src/futures/websockets.rs
@@ -114,12 +114,12 @@ impl<'a> FuturesWebSockets<'a> {
         }
     }
 
-    pub fn connect(&mut self, market: &FuturesMarket, subscription: &'a str) -> Result<()> {
+    pub fn connect(&mut self, market: &FuturesMarket, subscription: &str) -> Result<()> {
         self.connect_wss(&FuturesWebsocketAPI::Default.params(market, subscription))
     }
 
     pub fn connect_with_config(
-        &mut self, market: &FuturesMarket, subscription: &'a str, config: &'a Config,
+        &mut self, market: &FuturesMarket, subscription: &str, config: &Config,
     ) -> Result<()> {
         self.connect_wss(
             &FuturesWebsocketAPI::Custom(config.ws_endpoint.clone()).params(market, subscription),
@@ -139,7 +139,7 @@ impl<'a> FuturesWebSockets<'a> {
                 self.socket = Some(answer);
                 Ok(())
             }
-            Err(e) => bail!(format!("Error during handshake {}", e)),
+            Err(e) => bail!("Error during handshake {}", e),
         }
     }
 
diff --git a/src/websockets.rs b/src/websockets.rs
index 8abff2cd..32b8e3e9 100644
--- a/src/websockets.rs
+++ b/src/websockets.rs
@@ -105,7 +105,7 @@ impl<'a> WebSockets<'a> {
                 self.socket = Some(answer);
                 Ok(())
             }
-            Err(e) => bail!(format!("Error during handshake {}", e)),
+            Err(e) => bail!("Error during handshake {}", e),
         }
     }