error: duplicate item `dup2` in service `Service2`
   ╭▸ test/ui/duplicate_service_item.aldrin:18:11
   │
18 │     event dup2 = fallback;
   │           ━━━━ duplicate defined here
   │
   ⸬  test/ui/duplicate_service_item.aldrin:17:8
   │
17 │     fn dup2 = fallback;
   ╰╴       ──── first defined here