Comment 22 for bug 1921664

Furthermore I've built (again the very same source) in groovy as 5.2+dfsg-9ubuntu2~groovyppa1 in the same PPA.
This build works as well in my tries.

So I have the same code as in "1:5.2+dfsg-9ubuntu1" three times now:
1. [1] => built 2021-03-23 in Hirsute => works
2. [2] => built 2021-04-12 in Hirsute => fails
3. [3] => built 2021-04-13 in Groovy => works

[1]: https://launchpad.net/ubuntu/+source/qemu/1:5.2+dfsg-9ubuntu1/+build/21196422
[2]: https://launchpad.net/~paelzer/+archive/ubuntu/lp-1921664-testbuilds-rebuildold/+build/21392458
[3]: https://launchpad.net/~paelzer/+archive/ubuntu/lp-1921664-testbuilds-rebuildold/+build/21394457

With the two results above, I expected as next step could spin up a (git based)
Groovy and a Hirsute build environment.
I'd do a build from git (and optimize a bit for build speed).
If these builds confirm the above results of [2] and [3] then I should be able
to upgrade the components in the Groovy build environment one by one to Hirsute
To identify which one is causing the breakage...

But unfortunately I have to start to challenge the reproducibility and that is
breaking the camels back here. Without that I can't go on well, and as sad (it
is a real issue) as it is it is riscv64 emulation on an arm64 host really isn't
the most common use case. So I'm unsure how much time I can spend on this.

Maybe I have looked at this from the wrong angle, let me try something else before I give up ...