afvalcalendar: Add proper error handling

flake.nix

@@ -140,9 +140,17 @@
         sops-nix.packages.${system}.sops-import-keys-hook
       ];
 
-      packages = [
+      packages = with pkgs; [
         sops-nix.packages.${system}.sops-init-gpg-key
         deploy-rs.packages.${system}.default
+
+        cargo
+        clippy
+        rustc
+        rustfmt
+        rust-analyzer
+        pkg-config
+        openssl
       ];
     };
   };

pkgs/afvalcalendar/src/main.rs

@@ -3,8 +3,13 @@ mod trash;
 
 #[tokio::main]
 async fn main() {
-    let dates = trash::get_pickup_dates().await.unwrap();
+    match trash::get_pickup_dates().await {
+        Ok(dates) => {
             let calendar = calendar::calendar_from_pickup_dates(dates);
-
             calendar.print().unwrap();
         }
+        Err(error) => {
+            eprintln!("{}", error);
+        }
+    }
+}