Fetchmail reports "input in flex scanner failed"

Dmitry Katsubo via Fetchmail-users <[email protected]>
Newsgroups gmane.mail.fetchmail.user
Message-ID <[email protected]> 
Dear fetchamil users,

I have noticed that sometimes fetchamil reports the following to the output:

  input in flex scanner failed

I think this happens because ~/.fetchmailrc becomes (temporary) unavailable (input/output error), however it's difficult for me to strace this situation. Can it be the reason of such error? If so, is
it possible to rephrase this error message so that it is more verbose?

Thanks for any help.

-- 
With best regards,
Dmitry
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