IndexError

Level 1 of the Dungeon
(0, 0, D:1)
  a +0 dagger
  a goblin corpse
(2, 13, D:1)
  a +0 whip
  a gnoll corpse (skeletalised by now)
(2, 22, D:1)
  a frilled lizard corpse (skeletalised by now)
(7, 16, D:1)
  a kobold corpse (skeletalised by now)
(9, -2, D:1)
  a rat corpse (skeletalised by now)
(20, -16, D:1)
  a +0 scale mail
(23, -19, D:1)
  a +0 sling

Level 2 of the Dungeon
(0, 0, D:2)
  a +0 leather armour
(11, 0, D:2)
  a staff of cold
  (unseen)
(12, 0, D:2)
  a +0 falchion
(14, 12, D:2)
  a +0 club
  a +0 dagger
  a +0 dagger
  a +0 club
  a goblin corpse
  a goblin corpse
  a goblin corpse
(17, 0, D:2)
  a dart slug corpse
(19, 0, D:2)
  a +0 dagger
(24, 0, D:2)
  a +0 club
  a goblin corpse
(29, 0, D:2)
  5 stones