Cannot run piuparts
Description
Cannot run piuparts right now for Onionprobe. Either manually testing or through CI] there's the same error:
W: Upgrading non-merged-/usr environments post-bookworm is unsupported. Only do this for CI/QA infrastructure that will be re-bootstrapped rather than upgraded.
W: Failure trying to run: chroot "/tmp/tmpqd9o9832" /bin/true
W: See /tmp/tmpqd9o9832/debootstrap/debootstrap.log for details
Example CI run: Job #529808.