Executing: apt-get update
Get:1 http://deb.debian.org/debian forky InRelease [137 kB]
Get:2 http://deb.debian.org/debian forky/main i386 Packages [9458 kB]
Get:3 http://deb.debian.org/debian forky/main Translation-en [6455 kB]
Fetched 16.1 MB in 1s (14.8 MB/s)
Reading package lists...
Execution completed (exit code 0)
Executing: apt-get --yes install piuparts
Reading package lists...
Building dependency tree...
Reading state information...
Package piuparts is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source

E: Package 'piuparts' has no installation candidate