JAnD created this task. JAnD added a subscriber: JAnD. JAnD added a project: pywikibot-core.

TASK DESCRIPTION Sometimes when running two instances of interwiki bot I got in one window this (multiple) message. Usualy when one instance is waiting for response from server, but not always:

```

NOTE: [[ml:plnohodnotný]] does not exist. Skipping. Traceback (most recent call last): File "C:\Python27\lib\logging\handlers.py", line 77, in emit self.doRollover() File "I:\py\rewrite\pywikibot\bot.py", line 90, in doRollover os.rename(self.baseFilename, dfn) WindowsError: [Error 32] Proces nemß p°Ýstup k souboru, neboŁ jej prßvý vyu×Ývß jinř proces Logged from file bot.py, line 388 ```

Translate of error:` The process can not access the file because it is being used by another process` There is also strange charset in this message (probably from windows-side)

TASK DETAIL https://phabricator.wikimedia.org/T86493

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To: JAnD Cc: Aklapper, JAnD, jayvdb, pywikipedia-bugs