Bug#1140257: libconfig-model-lcdproc-perl: FTBFS: dh_dzil_build: error: dzil build --in .build/debian-build returned exit code 2

[Santiago Vila]

Package: src:libconfig-model-lcdproc-perl
Version: 2.055-2
Severity: serious
Tags: ftbfs forky sid

Dear maintainer:

During a rebuild of all packages in unstable, this package failed to build.

Below you will find the last part of the build log (probably the most
relevant part, but not necessarily). If required, the full build log
is available here:

https://people.debian.org/~sanvila/build-logs/202606/

About the archive rebuild: The build was made on virtual machines from AWS,
using sbuild and a reduced chroot with only build-essential packages.

If you cannot reproduce the bug please contact me privately, as I
am willing to provide ssh access to a virtual machine where the bug is
fully reproducible.

If this is really a bug in one of the build-depends, please use
reassign and add an affects on src:libconfig-model-lcdproc-perl, so that this is still
visible in the BTS web page for this package.

Thanks.

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[...]
 debian/rules clean
dh clean
   dh_dzil_clean
[Run::Clean] executing: rm -rf lib/Config/Model/models/
   debian/rules override_dh_clean
make[1]: Entering directory '/<<PKGBUILDDIR>>'
dzil clean
[Run::Clean] executing: rm -rf lib/Config/Model/models/
perl -n -i -E 'print unless /^version =/;' dist.ini
dh_clean
make[1]: Leaving directory '/<<PKGBUILDDIR>>'
 debian/rules binary
dh binary
   dh_update_autotools_config
   dh_autoreconf
   debian/rules override_dh_dzil_build
make[1]: Entering directory '/<<PKGBUILDDIR>>'
perl -p -g -i -E 'say "version = 2.055";' dist.ini
dh_dzil_build
[Run::BeforeBuild] executing: script/lcdconf2model.pl
WARN: Model Itself::Class: element name 'license gist': should use aliases to class_description instead of array ref.
WARN: Model Itself::Class: element name 'copyright': should use aliases to author instead of array ref.
WARN: Model Itself::Class: element name 'include_backend': should use aliases to include instead of array ref.
WARN: Model Itself::ConfigReadWrite: element name 'split_check_list_value': should use aliases to split_list_value instead of array ref.
WARN: Model Itself::ConfigReadWrite: element name 'join_check_list_value': should use aliases to join_list_value instead of array ref.
WARN: Model Itself::WarpableElement: element name 'allow_keys_matching follow_keys_from warn_if_key_match warn_unless_key_match': should use aliases to allow_keys_from instead of array ref.
WARN: Model Itself::WarpableElement: element name 'auto_create_keys allow_keys': should use aliases to default_keys instead of array ref.
argument '$selected.is_set('CFontz')' is not numeric at /usr/share/perl5/Config/Model/Loader.pm line 743.
[Run::BeforeBuild] Building lcdproc model from upstream LCDd.conf file lcdproc/LCDd.conf
[Run::BeforeBuild] command exited with status 2 (512)
[Run::BeforeBuild] command exited with status 2 (512) at inline delegation in Dist::Zilla::Plugin::Run::BeforeBuild for logger->log_fatal (attribute declared in /usr/share/perl5/Dist/Zilla/Role/Plugin.pm at line 61) line 18.
dh_dzil_build: error: dzil build --in .build/debian-build returned exit code 2
make[1]: *** [debian/rules:18: override_dh_dzil_build] Error 25
make[1]: Leaving directory '/<<PKGBUILDDIR>>'
make: *** [debian/rules:12: binary] Error 2
dpkg-buildpackage: error: debian/rules binary subprocess failed with exit status 2
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