Reading package lists... Done
Building dependency tree
Reading state information... Done
Calculating upgrade... Done
The following packages will be upgraded:
p7zip p7zip-full
2 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
Need to get 1,200 kB of archives.
After this operation, 89.1 kB disk space will be freed.
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WARNING: The following packages cannot be authenticated!
p7zip p7zip-full