[Pkg-rust-maintainers] Bug#1034939: librust-block-buffer-0.9-dev: missing Breaks+Replaces for librust-block-buffer-dev when upgrading from bullseye

[Helmut Grohne]

Package: librust-block-buffer-0.9-dev
Version: 0.9.0-1+b1
Severity: serious
Justification: dpkg unpack error

Attempting to unpack librust-block-buffer-0.9-dev/0.9.0-1+b1 from Debian bookworm
on a minimal Debian bullseye with librust-block-buffer-dev/0.9.0-4
installed, causes an unpack error from dpkg due to
/usr/share/cargo/registry/block-buffer-0.9.0/.cargo-checksum.json being contained in both packages.

| Selecting previously unselected package librust-block-buffer-0.9-dev:amd64.
| dpkg: considering deconfiguration of librust-block-buffer-dev:amd64, which would be broken by installation of librust-block-buffer-0.9-dev:amd64 ...
| dpkg: yes, will deconfigure librust-block-buffer-dev:amd64 (broken by librust-block-buffer-0.9-dev:amd64)
| (Reading database ... 4785 files and directories currently installed.)
| Preparing to unpack .../librust-block-buffer-0.9-dev_0.9.0-1+b1_amd64.deb ...
| De-configuring librust-block-buffer-dev:amd64 (0.9.0-4) ...
| Unpacking librust-block-buffer-0.9-dev:amd64 (0.9.0-1+b1) ...
| dpkg: error processing archive ./librust-block-buffer-0.9-dev_0.9.0-1+b1_amd64.deb (--unpack):
|  trying to overwrite '/usr/share/cargo/registry/block-buffer-0.9.0/.cargo-checksum.json', which is also in package librust-block-buffer-dev:amd64 0.9.0-4
| Errors were encountered while processing:
|  ./librust-block-buffer-0.9-dev_0.9.0-1+b1_amd64.deb


Please ensure that librust-block-buffer-0.9-dev has sufficient Breaks and Replaces declarations.

Helmut