borgbackup issue / fix stretch vagrant box #7579

[Jacek Kokoszka <jacek.kokoszka@port4949.net>]

Hi,

I would like to fix the issue https://github.com/borgbackup/borg/issues/7579 and to upload the updated vagrant box to app.vagrantup.com.
This is my first open source project in which I participate and I do not know how to begin... Could you give me a hint on that?
Thank you in advance! 

Greetings,
Jacek Kokoszka


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