Use vec

src/lib/voice.rs

@@ -1,4 +1,4 @@
-use serenity::model::gateway::;
+use std::vec;
 
 struct GuildVoice {
     channels: int,
@@ -6,4 +6,4 @@ struct GuildVoice {
 
 fn guild_register() {}
 
-static mut guilds: int = 5;
+// static mut guilds: int = 5;