Comment 127 for bug 1522675

One AskUbuntu user got error a about sandboxing and _apt user (see https://askubuntu.com/q/1082648/66509 ):

"Download is performed unsandboxed as root as file '/home/jim/Downloads/rainlendar2-lite_2.14.2.b157-1_amd64.deb' couldn't be accessed by user '_apt'. - pkgAcquire::Run (13: Permission denied)"

see full output below:

jim@jim-Z1-7623:~/Downloads$ sudo apt-get install ./rainlendar2-lite_2.14.2.b157-1_amd64.deb
[sudo] password for jim:
Reading package lists... Done
Building dependency tree
Reading state information... Done
Note, selecting 'rainlendar2-lite' instead of './rainlendar2-lite_2.14.2.b157-1_amd64.deb'
The following NEW packages will be installed:
  rainlendar2-lite
0 upgraded, 1 newly installed, 0 to remove and 7 not upgraded.
Need to get 0 B/17.9 MB of archives.
After this operation, 20.5 MB of additional disk space will be used.
Get:1 /home/jim/Downloads/rainlendar2-lite_2.14.2.b157-1_amd64.deb rainlendar2-lite amd64 2.14.2.b157-1 [17.9 MB]
Selecting previously unselected package rainlendar2-lite.
(Reading database ... 180109 files and directories currently installed.)
Preparing to unpack .../rainlendar2-lite_2.14.2.b157-1_amd64.deb ...
Unpacking rainlendar2-lite (2.14.2.b157-1) ...
Processing triggers for mime-support (3.60ubuntu1) ...
Processing triggers for desktop-file-utils (0.23-1ubuntu3.18.04.1) ...
Setting up rainlendar2-lite (2.14.2.b157-1) ...
Processing triggers for gnome-menus (3.13.3-11ubuntu1.1) ...
N: Download is performed unsandboxed as root as file '/home/jim/Downloads/rainlendar2-lite_2.14.2.b157-1_amd64.deb' couldn't be accessed by user '_apt'. - pkgAcquire::Run (13: Permission denied)