I run a daily job that uploads data from one server to another, and today I noticed that it failed silently two days ago - no mail got sent, and the jobs were never run. But when I look at the crontab logs, it claims that it sent the jobs and the emails - both successfully. However, the jobs were never run (they're always logged, even when they fail instantly) and no email was received (we receive emails on success and on failure). The logs for the previous and next day look the same, and everything worked those days.
Any ideas of what could be happening?
This is on an AWS ec2 instance