Your data lines are different enough that each type needs its own parser.

Uhm, no, as shown in several other replies.

A hash of coderefs ("dispatch table") will do that nicely,

Actually, your solution is very inflexible. It can't even deal with:

WARNING(2): system is rebooting
[download]

(only the exit value is different from the original). It'll produce an error, as Perl will try to use an undefined value as a code reference.

Abigail