Why isn’t My Scheduled Task Executing?

A quick diversion from the JavaScript Common Difficulties and Misconceptions series (I have another post queued up, just need to write the sample code), for an issue I just ran into.

Created a scheduled task for DNN, but it’s sitting in the scheduler queue, just getting more and more overdue.  Why won’t my task run?

Somehow I missed the constructor from the tasks I copied.  Your task needs a constructor that takes a ScheduleHistoryItem to run via the scheduler.