style: minor changes

src/lua/matrix/client.rs

@@ -11,7 +11,7 @@ impl UserData for Client {
             Ok(this.0.rooms().into_iter().map(Room).collect::<Vec<_>>())
         });
         f.add_field_method_get("user_id", |_, this| {
-            Ok(this.0.user_id().map(std::string::ToString::to_string))
+            Ok(this.0.user_id().map(ToString::to_string))
         });
     }
 

src/matrix/verification.rs

@@ -1,5 +1,3 @@
-use std::time::Duration;
-
 use anyhow::{Context, Result};
 use futures::StreamExt;
 use log::{error, info, warn};
@@ -17,6 +15,7 @@ use matrix_sdk::{
         },
     },
 };
+use std::time::Duration;
 use tokio::time::sleep;
 
 async fn confirm_emojis(sas: SasVerification, emoji: [Emoji; 7]) {