iptables-netflow/2.5.1-2 ADT test failure with linux-unstable/5.13.0-3.3

[Andrea Righi]

This is a scripted bug report about ADT failures while running iptables-netflow tests for linux-unstable/5.13.0-3.3 on impish. Whether this is caused by the dep8 tests of the tested source or the kernel has yet to be determined.

Testing failed on:
    amd64: https://autopkgtest.ubuntu.com/results/autopkgtest-impish-canonical-kernel-team-unstable/impish/amd64/i/iptables-netflow/20210518_175258_b6fee@/log.gz
    arm64: https://autopkgtest.ubuntu.com/results/autopkgtest-impish-canonical-kernel-team-unstable/impish/arm64/i/iptables-netflow/20210518_175330_64259@/log.gz
    armhf: https://autopkgtest.ubuntu.com/results/autopkgtest-impish-canonical-kernel-team-unstable/impish/armhf/i/iptables-netflow/20210518_145458_40f30@/log.gz
    ppc64el: https://autopkgtest.ubuntu.com/results/autopkgtest-impish-canonical-kernel-team-unstable/impish/ppc64el/i/iptables-netflow/20210518_141916_b6fee@/log.gz
    s390x: https://autopkgtest.ubuntu.com/results/autopkgtest-impish-canonical-kernel-team-unstable/impish/s390x/i/iptables-netflow/20210518_134654_7d6a3@/log.gz