Subject: bug#45828: guix build: error: got unexpected path `Backtrace:' from substituter

From: Ludovic Courtès <[email-masked]>
Date: Wed, 13 Jan 2021 14:52:43 +0100

I forgot to mention: running “sudo herd restart guix-publish” on berlin
a couple of hours ago solved the immediate problem.

Ludo’.