Crash when running arbtt-dump or arbtt-stats

[samsabra]

I'm on Ubuntu 11.04 (2.6.38-13-generic #54-Ubuntu SMP)

arbtt-dump and arbtt-stats were working fine until recently.

Now I'm getting the following error:

$ arbtt-stats
arbtt-stats: Prelude.chr: bad argument: 2022855

$ arbtt-dump
arbtt-stats: Prelude.chr: bad argument: 2022855

Thanks,

Sam

[Joachim Breitner (nomeata)]

Hi. What is your version of arbtt? Was there an upgrade recently?

[Jason H (melodiccontagion)]

It seems most likely that there was an update that broke some things for you. The solution is to run arbtt-recover, then take the capture.log and rename it to something else (that is, back it up instead of deleting it), then rename capture.log.recovered to capture.log.

@Joachim: The similar error I encountered was "arbtt-stats: Prelude.chr: bad argument: 1728640". When I used arbtt-recover, it gave me a lot of outputs like this: "Failed to read value at position 6811645:
   Unsupported TimeLogEntry version tag 112"

Does this help? Unfortunately, I don't remember if there was a recent upgrade.... But on the bright side, arbtt-recover saved all the data for me perfectly.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Joachim Breitner (nomeata)]

@Jason: That recover is spilling out lots of text is normal, as it is quite brutally trying to skip some amount of data and continue reading.

The cause could also be a broken read, e.g. when the user logs out precicely while arbtt-capture is writing data, or maybe two arbtt-capture instances ran at the same time somehow... but none of this has ever happened here...