[Pkg-rust-maintainers] Bug#1118213: rust-zbus 5.10 FTBFS with rust-zbus-macros 5.12

[Peter Green]

Package: rust-zbus
Severity: serious
x-debbugs-cc: jbicha at debian.org
Tags: forky, sid

Hi jeremy, it seems we have a big of a mess with zbus, which needs
to be resolved before nix can migrate to testing.

While looking at the excuses for rust-nix, I noticed that rust-zbus
was failing on riscv64, to address this, I made an upload of
rust-zbus 5.6 which reduced the number of tests run on riscv64.

The next day, before I had pushed my upload, you made an upload
of rust-zbus 5.10, which did not incorporate my changes.
Soon afterwards you also uploaded rust-zbus-macros 5.12

I then made a follow up upload of rust-zbus, merging my changes
with yours. Some hours later, when britney picked things up,
I was surprised to find it failed to build on almost all
architectures.

Diffing a good log with a bad log, it appears the cause of the
failure was the upload of rust-zbus-macros 5.12.

Where do you think we should go from here? should we just
update zbus to 5.12?