error: duplicate item `dup1` in service `Service2`
   ╭▸ test/ui/duplicate_service_item.aldrin:16:11
   │
16 │     event dup1 @ 1;
   │           ━━━━ duplicate defined here
   │
   ⸬  test/ui/duplicate_service_item.aldrin:15:8
   │
15 │     fn dup1 @ 1;
   ╰╴       ──── first defined here