refactor: force exit instead of panicking

src/main.rs

@@ -134,7 +134,7 @@ impl EventHandler for HydrogenHandler {
 
             if !register_commands(None, &ctx.http, &self.context.commands_id).await {
                 error!("(ready): cannot register commands");
-                panic!("cannot register commands");
+                exit(1);
             }
         }
 
@@ -333,15 +333,15 @@ async fn main() {
         Ok(v) => v,
         Err(e) => {
             error!("cannot initialize time parsers: {}", e);
-            panic!("cannot initialize time parsers");
+            exit(1)
         }
     });
 
     let roll_parser = Arc::new(match RollParser::new() {
         Ok(v) => v,
         Err(e) => {
             error!("cannot initialize roll parser: {}", e);
-            panic!("cannot initialize roll parser");
+            exit(1);
         }
     });
 

src/manager.rs

@@ -1,6 +1,7 @@
 use std::{
     collections::HashMap,
     fmt::Display,
+    process::exit,
     result,
     sync::{
         atomic::{AtomicUsize, Ordering},
@@ -761,7 +762,8 @@ impl LavalinkHandler for HydrogenManager {
         }
 
         if lavalink_nodes.len() == 0 {
-            panic!("(disconnect): no lavalink nodes connected.");
+            error!("(disconnect): no lavalink nodes connected.");
+            exit(1);
         }
 
         let mut players = self.player.write().await;