Playing on debian,
Unix SlashEM Version 0.0.7E7F3 - last build Wed Sep 10 21:28:15 2008
I was wearing an uncursed amulet of change which had been polymoprhed into something (unknown) else.
I got the message that my amulet transmutes and then
"you suddenly feel very masculine" and then
Suddenly, the dungeon collapses.
Report error to "root" and it may be possible to rebuild..
extract_nobj: object lost