Comment 1 for bug 1911400

All proposed + PPA:

Locally:
$ sudo ~/work/autopkgtest/autopkgtest/runner/autopkgtest --no-built-binaries --apt-upgrade --apt-pocket=proposed --setup-commands="add-apt-repository ppa:paelzer/lp-1911400-octave-test-fail; apt update; apt -y upgrade" --shell octave-parallel_4.0.0-2ubuntu1~ppa1.dsc -- qemu --ram-size=1536 --cpus 2 ~/work/autopkgtest-hirsute-amd64.img
=> this kept working

PPA:
$ lp-test-ppa ppa:paelzer/lp-1911400-octave-test-fails --release hirsute --showskip --showpass
=> This kept failing

I've isolated the logs of one of the tests (inst/pararrayfun.m) and diffed them.
Unfortunately not much insight. After a whopping 15013 lines that fully match it directly runs into the fail in the bad case.
The issue is very close to the end with just 20 lines following in the good case before the logs fully match again (except reports stating that one test failed).

The asserts of the test are so far away - it seems this is "on the way out" of the test and not directly associated to the assert.