UpgradeError: Error: 7.13 -> 7.14

[sentry-for-tribler]

Sentry Issue: TRIBLER-1SN

Error: [('/home/<site>/.Tribler/7.13/sqlite/knowledge.db', '/home/<site>/.Tribler/7.14_tmp_copy/sqlite/knowledge.db', "[Errno 5] Input/output error: '/home/<site>/.Tribler/7.13/sqlite/knowledge.db' -> '/home/<site>/.Tribler/7.14_tmp_copy/sqlite/knowledge.db'")]
(1 additional frame(s) were not displayed)
...
  File "tribler/gui/upgrade_manager.py", line 76, in upgrade_state_dir
  File "tribler/core/upgrade/version_manager.py", line 365, in fork_state_directory_if_necessary
  File "tribler/core/upgrade/version_manager.py", line 186, in copy_state_from
  File "shutil.py", line 557, in copytree
  File "shutil.py", line 513, in _copytree

UpgradeError: Error: [('/home/<site>/.Tribler/7.13/sqlite/knowledge.db', '/home/<site>/.Tribler/7.14_tmp_copy/sqlite/knowledge.db', "[Errno 5] Input/output error: '/home/<site>/.Tribler/7.13/sqlite/knowledge.db' -> '/home/<site>/.Tribler/7.14_tmp_copy/sqlite/knowledge.db'")]
  File "tribler/gui/upgrade_manager.py", line 257, in on_worker_finished

User message on the report:

Tribler asked me to delete directories of previous versions, I said yes. 
Crash happened after restart of tribler

[qstokkink]

In the most recent Tribler code this logic is no longer present and this issue no longer seems relevant.