tests

Fix traceback in 'linkpac --disable-build' #624

Job	Run time
unit - read only fixtures	21s
unit (registry.fedoraproject.org/fedora:38)	1m 4s
unit (registry.fedoraproject.org/fedora:39)	1m 0s
unit (registry.fedoraproject.org/fedora:rawhide)	28s
unit (registry.opensuse.org/opensuse/leap:15.3)	1m 22s
unit (registry.opensuse.org/opensuse/leap:15.4)	1m 31s
unit (registry.opensuse.org/opensuse/leap:15.5)	1m 25s
unit (registry.opensuse.org/opensuse/tumbleweed)	53s
unit (quay.io/centos/centos:stream9)	34s
unit (docker.io/library/debian:stable)	26s
unit (docker.io/library/debian:unstable)	33s
unit (docker.io/library/ubuntu:latest)	30s
behave	6m 36s
	16m 43s

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