The source package rust-hstr builds the binary package
librust-is-macro-dev for Architecture:all with version
0.3.7+0+20250106-2

The source package rust-is-macro builds the binary package
librust-is-macro-dev for Architecture:any with version 0.3.6-1 .

Because rust-hstr appeared in Debian after rust-is-macro with a higher
version number, Debian has automatically removed the older version
built by rust-is-macro from Unstable. Because rust-hstr has failing
autopkgtests, it is unable to migrate to Testing. Therefore, the
version built by rust-is-macro is in Testing.

$ rmadison -u debian librust-is-macro-dev
librust-is-macro-dev | 0.3.6-1            | testing    | amd64, arm64,
armel, armhf, i386, mips64el, ppc64el, riscv64, s390x
librust-is-macro-dev | 0.3.7+0+20250106-2 | unstable   | all

I am filing separate RC bugs against both source packages because I
don't know which source package should provide librust-is-macro-dev.

Thank you,
Jeremy Bícha

Quoting Jeremy Bícha (2025-04-06 21:07:42)

I messed up and didn't notice that rust-is-macro was already packaged
independently, when I packaged the upstream source project that it is a
part of.

It is not correct that rust-is-macro is gone from unstable however:
https://packages.debian.org/source/unstable/rust-is-macro

In my understanding, what is happening is instead, that some package
views only show the newest version when multiple are available.

I apologize for my inadvertent hijack and the mess that it has caused.
If the current maintainer of rust-is-macro wants me to, I will gladly
hand back the maintenance of that package.

I see two ways to solve this issue: a) rust-is-macro is simply dropped,
or b) rust-is-macro gets upgraded to a version newer than what is now
virtually provided by rust-hstr, and then the virtually provided binary
packages librust-is-macro*-dev are dropped from rust-hstr.

I have now lowered the severity of this bugreport, so as to permit a)
to happen. To repeat, I will gladly do the second part of b) if the
maintainer of rust-is-macro prefer that option: They will then need to
do first part of b).

Kind regards,

 - Jonas

Quoting Jeremy Bícha (2025-04-06 21:07:42)

Apparently this issue is fixed by now:

$ rmadison -u debian librust-is-macro-dev
librust-is-macro-dev | 0.3.7+0+20250327-1 | stable     | all
librust-is-macro-dev | 0.3.7+0+20250327-1 | testing    | all
librust-is-macro-dev | 0.3.7+0+20250327-1 | unstable   | all
librust-is-macro-dev | 0.3.7+0+20250621-2 | new        | all

 - Jonas