unknown error executing apt-key

[EdNett]

Hello, I found the following error - I wonder if it is important and needs to be resolved or does it refer to deprecated packages? (after update to latest head sith mariadb 10.3 and php 7.3):

gist:
https://gist.github.com/EdNett/d8e86d02dc1415ccb66eab00bc9cb758

boa info more:
https://gist.github.com/EdNett/23d459b34e826cc27d0c47e1d2487c83

Best

Ed

[ar-jan]

I just got this after upgrading from Jessie to Stretch. There's already an issue, and this proposal solved it for me.

[omega8cc]

This is normal on Stretch, if you try to run apt-get or aptitude manually, outside of running it via barracuda script.

BOA automatically creates /etc/apt/apt.conf.d/00sandboxtmp file with line disabling sandboxing temporarily during the upgrade:

echo "APT::Sandbox::User \"root\";" > /etc/apt/apt.conf.d/00sandboxtmp

Allegedly it's not recommenced to keep this file always present, so barracuda deletes it at final cleanup.

Perhaps we should make it permanent just to stop the confusion and breaking apticron.