[Pkg-rust-maintainers] Bug#1122823: misleading error message "Could not find any Cargo lib or bin packages to build."

[Johannes Schauer Marin Rodrigues]

Source: dh-cargo
Version: 32
Severity: normal

Hi,

when creating a new package, I got the following error:

dpkg-buildpackage: info: host architecture arm64
 debian/rules clean
dh clean --buildsystem=cargo --sourcedirectory=crates/hyfetch/
   dh_auto_clean -O--buildsystem=cargo -O--sourcedirectory=crates/hyfetch/
dh_auto_clean: error: Could not find any Cargo lib or bin packages to build.
make: *** [debian/rules:18: clean] Error 25
dpkg-buildpackage: error: debian/rules clean subprocess returned exit status 2

The problem was, that my package was listed as "Architecture: all" instead of
"Architecture: any" but above error message did not let me recognize this as
the source of the problem until I started treading cargo.pm from src:dh-cargo.

I should not have to read the source code of the software producing an error
message to find out why the error message is produced. Please be more verbose
in explaining why dh-cargo thinks that it could not find lib or bin packages.

I was suspecting that there was a problem with my Cargo.toml but not with my
debian/control.

Thanks!

cheers, josch