memory error

[ripplesouth]

Describe the bug
memory error while scanning for dupes. scan halts. 64 million files to dedupe.

To Reproduce
Steps to reproduce the behavior:

1. select multiple drives to scan
2. After scan running over 48 hours
3. popup with error message
4. See error

Expected behavior
Report duplicate files

Screenshots
n/a

Desktop (please complete the following information):

• OS: server 2019 fully updated
• Version 1809

Application Name: dupeGuru
Version: 4.3.1
Python: 3.8.13
Operating System: Windows-10-10.0.17763-SP0

Traceback (most recent call last):
File "hscommon\gui\progress_window.py", line 107, in pulse
File "core\app.py", line 332, in _job_error
File "hscommon\jobprogress\performer.py", line 46, in _async_run
File "core\app.py", line 820, in do
File "core\scanner.py", line 152, in get_dupe_groups
File "core\scanner.py", line 97, in _getmatches
File "core\engine.py", line 304, in getmatches_by_contents
MemoryError

[YEAS175m3]

Exact same error/traceback message here with the following differences in the initial situation:

• Windows 10 Pro 22H2 (Build 19045.4291)
• Application Mode: Standard
• Scan Type: Folders (with Filter Hardness 100)

Only 1 directory (Backup folder with 12 TB and 1550000 files.