IndexError

Level 1 of the Dungeon
(0, 0, D:1)
  a bat corpse (skeletalised by now)
(0, 1, D:1)
  a bat corpse (skeletalised by now)
(6, -11, D:1)
  a +0 dagger
  5 stones
(13, 3, D:1)
  a +0 dagger
  a goblin corpse (skeletalised by now)
(13, 6, D:1)
  a +0 club
(14, -30, D:1)
  a +0 whip
  3 stones
  a kobold corpse
(17, -26, D:1)
  a frilled lizard corpse
(17, 6, D:1)
  a +0 dagger
  a kobold corpse (skeletalised by now)
(18, -22, D:1)
  5 stones
(22, 10, D:1)
  a +0 scale mail
(23, 29, D:1)
  a +0 sling
(35, -30, D:1)
  a +0 club
(35, 28, D:1)
  a book of Touch
(37, -26, D:1)
  4 stones
(45, -8, D:1)
  4 large rocks {!d}
(55, 4, D:1)
  a +0 mace