Task result error: ([Failure instance: Traceback: <class 'IndexError'>: index out of range

[ederenn]

Description

Golem Version: 0.22.1

Golem-Messages version: 3.14.1

Electron version: 0.2.4

OS [e.g. Windows 10 Pro]: Ubuntu 18.04

Branch (if launched from source): -

Mainnet/Testnet: mainnet

Description of the issue:

During computations of a concent task in logs appeared:

2020-01-24 16:23:37 WARNING  golem.task.server.helpers           Task result error: 20ad585e-3ebd-11ea-b999-1a933e629084 ([Failure instance: Traceback: <class 'IndexError'>: index out of range
/usr/lib/python3.6/threading.py:916:_bootstrap_inner
/usr/lib/python3.6/threading.py:864:run
/home/buildbot-worker/worker/buildpackage_linux/build/.venv/lib/python3.6/site-packages/twisted/_threads/_threadworker.py:46:work
/home/buildbot-worker/worker/buildpackage_linux/build/.venv/lib/python3.6/site-packages/twisted/_threads/_team.py:190:doWork
--- <exception caught here> ---
/home/buildbot-worker/worker/buildpackage_linux/build/.venv/lib/python3.6/site-packages/twisted/python/threadpool.py:250:inContext
/home/buildbot-worker/worker/buildpackage_linux/build/.venv/lib/python3.6/site-packages/twisted/python/threadpool.py:266:<lambda>
/home/buildbot-worker/worker/buildpackage_linux/build/.venv/lib/python3.6/site-packages/twisted/python/context.py:122:callWithContext
/home/buildbot-worker/worker/buildpackage_linux/build/.venv/lib/python3.6/site-packages/twisted/python/context.py:85:callWithContext
/home/buildbot-worker/worker/buildpackage_linux/build/golem/task/result/resultmanager.py:128:extract
/home/buildbot-worker/worker/buildpackage_linux/build/golem/task/result/resultpackage.py:188:extract
/home/buildbot-worker/worker/buildpackage_linux/build/golem/task/result/resultpackage.py:171:extract
/home/buildbot-worker/worker/buildpackage_linux/build/golem/core/fileencrypt.py:122:decrypt
]) 

Task: small shark resolution and sampling from file, 2 frames, 4 subtasks, bid 0.1

Actual result:

Task has ended in timeout

Logs and any additional context

full log: golem (12).log

Proposed Solution?

(Optional: What could be a solution for that issue)