Hello, also on Jessie (AMD64) I can confirm the described problem:
run-parts: executing xkiosk/modules/install-runit Reading package lists... Done Building dependency tree Reading state information... Done The following extra packages will be installed: fgetty Suggested packages: socklog-run The following NEW packages will be installed: fgetty runit 0 upgraded, 2 newly installed, 0 to remove and 0 not upgraded. Need to get 144 kB of archives. After this operation, 590 kB of additional disk space will be used. Get:1 http://mirrors.kernel.org/debian/ jessie/main fgetty amd64 0.6-5 [25.9 kB] Get:2 http://mirrors.kernel.org/debian/ jessie/main runit amd64 2.1.1-6.2 [119 kB] Fetched 144 kB in 1s (108 kB/s) debconf: delaying package configuration, since apt-utils is not installed Selecting previously unselected package fgetty. (Reading database ... 10334 files and directories currently installed.) Preparing to unpack .../fgetty_0.6-5_amd64.deb ... Unpacking fgetty (0.6-5) ... Selecting previously unselected package runit. Preparing to unpack .../runit_2.1.1-6.2_amd64.deb ... Unpacking runit (2.1.1-6.2) ... Setting up fgetty (0.6-5) ... Setting up runit (2.1.1-6.2) ... /var/lib/dpkg/info/runit.postinst: 48: kill: Operation not permitted dpkg: error processing package runit (--configure): subprocess installed post-installation script returned error exit status 1 Errors were encountered while processing: runit E: Sub-process /usr/bin/dpkg returned an error code (1) install-runit: attempting to repair runit installation. Setting up runit (2.1.1-6.2) ... run-parts: executing xkiosk/modules/lock-root-passwd Locking out debirf-xkiosk superuser from password-based access: passwd: password expiry information changed. run-parts: executing xkiosk/modules/network-dhcp run-parts: executing xkiosk/modules/root-bashrc run-parts: executing xkiosk/modules/serial-terminal mknod: 'dev/ttyS0': Permission denied run-parts: xkiosk/modules/serial-terminal exited with return code 1