Bug#968851: Apt does not remove temporary files it creates

["Piero V." <vogliadifarniente@gmail.com>]

Hello!

I noticed that `apt-cache policy` creates temporary files also in 
`/var/cache/apt/` (`srcpkgcache.bin.xxxxxx` and 
`srcpkgcache.bin.xxxxxx`), to then rename them (to `srcpkgcache.bin` and 
`srcpkgcache.bin` respectively).

But when run as normal user this fails, but apt-cache does not remove 
these files.

I do not know whether this is a problem with how my permissions are set 
on `/var/cache/apt`, but I think that apt-cache should remove them anyway.


Please, let me know if you prefer me to create another bug for this issue.


Thank you,

Pier Angelo V,