Failure
This one was a pretty mild failure, but I'm aiming to be more strict about these things to avoid spoiling my failure signal. I'd been going to bed pretty late recently, and I wanted to switch around to going to bed early. In theory I still had time to write my post before my deadline but I woke up too late. The whole point of setting myself up to post in advance (as per my recent prototypes) is to allow a buffer for these kinds of missteps, but I used that buffer up with last week's Unix post, which took way longer than I thought.
The immediate failure could be prevented by paying more attention to the impact that changing my sleep patterns has on my posting schedule, and in particular not relying on posting when I wake up. In general, I think these kind of minor failures are best avoided by sticking to my posting in advance habit, which should be easier now that I've removed the minor inconveniences associated with it.