Latest version of Jenkins Debian package (1.538) fails to install:

Setting up jenkins (1.538) ...
chown: cannot access `/var/run/jenkins': No such file or directory
dpkg: error processing jenkins (--configure):
subprocess installed post-installation script returned error exit status 1

The Debian package doesn't provide the /var/run/jenkins directory but modifies it in the postinst maintainer script without checking whether it's present.

Workaround for installation:

mkdir /var/run/jenkins