When the MailChimp PHP library fails to load, a bad log entry is created

I was doing a new install for someone who had installed and enabled the MailChimp module without loading the MailChimp PHP library. When accessing the MailChimp module configuration, a bad Drupal log is created. Here is the event:

stdClass Object
(
    [wid] => 847
    [uid] => 1
    [severity] => 5
    [type] => mailchimp
    [timestamp] => 1383055105
    [message] => Failed to load MailChimp PHP library. Please refer to the installation requirements.
    [variables] => i:3;
    [link] => 
    [name] => admin
)

Line 295 has this:

$output = t($event->message, unserialize($event->variables));

1) Not sure why variables has "3" in it since the message has no variables defined.
2) According to the API docs for t(), the second parameter has to be an array.

I will be investigating. Because of this bad entry, none of the log will show.