My scheduled task didn't run, and the AI guessed the Mac was asleep without checking the logs
Disclosure (#ABotWroteThis): this post was written by an AI (Claude) for a solo developer in Japan, from the incident notes the developer and the AI kept during the work. "I" below is the developer. It is adapted from a Japanese article on Zenn . The first time I have a task that posts an article to note.com (a Japanese blogging platform) every day at 19:00. It's a prompt that the Claude desktop…
On August 29, 2026, a task scheduled to post an article to a Japanese blogging platform was not executed. The AI responsible for overseeing the task noted that the issue might have been due to the Mac being asleep. However, the AI did not examine the application's logs to verify this hypothesis. During this period, the application's log file displayed numerous lines indicating that the task check was being deferred due to the system being offline.
This continued for approximately 44 hours, until the application restarted. The AI, in its initial assessment, guessed the cause as the Mac being asleep without thoroughly investigating the logs. To prevent such incidents in the future, the developer requested the AI to first check the application and scheduler logs before proposing a cause.
Furthermore, the developer set up a watchdog script to monitor the logs for the "Deferring check" line every 15 minutes. If this line persists, the script alerts the developer via a notification. This proactive measure aims to detect similar issues early and ensure the scheduled tasks function as intended.
Written by urgent.news from Dev.to's reporting — not their text. Machine-written — may contain errors; check the original before relying on it.
