Its definitely a Failure instance. I've previously looked at log statements to verify that.

Its related. Sdehaan asked me to start making SMPP errors (specifically this one) visible in either the heartbeats system or Sentry. Its the motivation for this PR. So what I opted to do is make sure that this error is pushed to Sentry (by using log.err), and then have hyperlinks from the heartbeat dash to Sentry. Adding the "worker-id" tag to sentry messages ensures that we can lookup Sentry errors by worker type.