The author laments about humiliated Jerusalem, listing various facts. In 5:13, the New American Standard Bible reads :
"Young men worked at the grinding mill, And youths stumbled under loads of wood."
The meaning is perfectly clear, the sentence referring to some kind of hard labour.
Yet the Latin Vulgate says something completely different (at least in the first part of the verse) :
Adolescentibus impudice abusi sunt, et pueri in ligno corruerunt. "They shamelessly ...