Overview buffer contains garbage

[Thien-Thi Nguyen]

I see a message like this every once in a while:

Overview buffer contains garbage ‘an 2021 09:28:15 -0300        
<6006d062.1c69fb81.9582b.0045@mx.google.com>    
<5ffe3063.1c69fb81.52f23.11a7@mx.google.com>    6898    23      Xref: 
news.gmane.io gmane.emacs.bugs:198159’.

What does it mean and how can i get rid of it?

-- 
Thien-Thi Nguyen -----------------------------------------------
 (defun responsep (query)               ; (2021) Software Libero
   (pcase (context query)               ;       = Dissenso Etico
     (`(technical ,ml) (correctp ml))
     ...))                              748E A0E8 1CB8 A748 9BFA
--------------------------------------- 6CE4 6703 2224 4C80 7502

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