Hi,
I noticed the util-linux.tcz extension version 2.27 (from 7.x/x86_64) introduces a regression in certain commands.
For example, on 6.x with util-linux 2.25.1:
$ sfdisk -l /dev/nothing
sfdisk: cannot open /dev/nothing for reading: No such file or directory
$ echo $?
1
but on 7.x with util-linux 2.27:
$ sfdisk -l /dev/nothing
$ echo $?
0
We get no output, and it exits cleanly.
I can't confirm if the problem is with that version util-linux itself, or with the way it was compiled.