The reason your version fails the way it does is that all the matches are done at once in constructing the foreach list. When you finally start looping, $1 and $2 are leftovers from the last matching line in $web.

You can set up with foreach like this:

foreach (split "\n", $web) {
    if (m/(log_id\=(\d*)\&.*?Label Defect)/m) {
        #... etc
    }
}
[download]

or with 5.8.0 you can get a little crazed with

{
    open my $foo, '<', \$web or die $!;
    while (<$foo>) {
        if (m/(log_id\=(\d*)\&.*?Label Defect)/m) {
            #... etc
        }
    }
}
[download]

It would also be good to limit the scope of my $incident_id to within the if block, where it is assigned and used.

After Compline,
Zaxo