Bug#1046177: siconos: Fails to build source after successful build

[Lucas Nussbaum]

Source: siconos
Version: 4.4.0+dfsg-3
Severity: minor
Tags: trixie sid ftbfs
User: lucas at debian.org
Usertags: ftbfs-sab-20230813 ftbfs-source-after-build
User: debian-qa at lists.debian.org
Usertags: qa-doublebuild

Hi,

This package fails to build a source package after a successful build
(dpkg-buildpackage ; dpkg-buildpackage -S).

This is probably a clear violation of Debian Policy section 4.9 (clean target),
but this is filed as severity:minor for now, because a discussion on
debian-devel showed that we might want to revisit the requirement of a working
'clean' target.

More information about this class of issues, included common problems and
solutions, is available at
https://wiki.debian.org/qa.debian.org/FTBFS/SourceAfterBuild

Relevant part of the build log:
> cd /<<PKGBUILDDIR>> && runuser -u user42 -- dpkg-buildpackage --sanitize-env -us -uc -rfakeroot -S
> --------------------------------------------------------------------------------------------------------------------------
> 
> dpkg-buildpackage: info: source package siconos
> dpkg-buildpackage: info: source version 4.4.0+dfsg-3
> dpkg-buildpackage: info: source distribution unstable
> dpkg-buildpackage: info: source changed by Sébastien Villemot <sebastien at debian.org>
>  dpkg-source --before-build .
>  debian/rules clean
> dh clean --with python3 --with numpy3 --no-parallel --builddirectory=/<<PKGBUILDDIR>>/obj-x86_64-linux-gnu
>    dh_auto_clean -O--no-parallel -O--builddirectory=/<<BUILDDIR>>/siconos-4.4.0\+dfsg/obj-x86_64-linux-gnu
> 	rm -rf obj-x86_64-linux-gnu
>    dh_autoreconf_clean -O--no-parallel -O--builddirectory=/<<BUILDDIR>>/siconos-4.4.0\+dfsg/obj-x86_64-linux-gnu
>    dh_clean -O--no-parallel -O--builddirectory=/<<BUILDDIR>>/siconos-4.4.0\+dfsg/obj-x86_64-linux-gnu
> 	rm -f debian/debhelper-build-stamp
> 	rm -rf debian/.debhelper/
> 	rm -f debian/libsiconos-control-dev.debhelper.log debian/libsiconos-control7.debhelper.log debian/libsiconos-io-dev.debhelper.log debian/libsiconos-io7.debhelper.log debian/libsiconos-kernel-dev.debhelper.log debian/libsiconos-kernel7.debhelper.log debian/libsiconos-mechanics-dev.debhelper.log debian/libsiconos-mechanics7.debhelper.log debian/libsiconos-numerics-dev.debhelper.log debian/libsiconos-numerics7.debhelper.log debian/python3-siconos.debhelper.log debian/siconos-mechanics-tools.debhelper.log debian/siconos.debhelper.log
> 	rm -f -- debian/siconos.substvars debian/siconos-mechanics-tools.substvars debian/libsiconos-numerics7.substvars debian/libsiconos-numerics-dev.substvars debian/libsiconos-kernel7.substvars debian/libsiconos-kernel-dev.substvars debian/libsiconos-control7.substvars debian/libsiconos-control-dev.substvars debian/libsiconos-mechanics7.substvars debian/libsiconos-mechanics-dev.substvars debian/libsiconos-io7.substvars debian/libsiconos-io-dev.substvars debian/python3-siconos.substvars debian/python3-siconos.postinst.debhelper debian/python3-siconos.prerm.debhelper debian/files
> 	rm -fr -- debian/siconos/ debian/tmp/ debian/siconos-mechanics-tools/ debian/libsiconos-numerics7/ debian/libsiconos-numerics-dev/ debian/libsiconos-kernel7/ debian/libsiconos-kernel-dev/ debian/libsiconos-control7/ debian/libsiconos-control-dev/ debian/libsiconos-mechanics7/ debian/libsiconos-mechanics-dev/ debian/libsiconos-io7/ debian/libsiconos-io-dev/ debian/python3-siconos/
> 	find .  \( \( \
> 		\( -path .\*/.git -o -path .\*/.svn -o -path .\*/.bzr -o -path .\*/.hg -o -path .\*/CVS -o -path .\*/.pc -o -path .\*/_darcs \) -prune -o -type f -a \
> 	        \( -name '#*#' -o -name '.*~' -o -name '*~' -o -name DEADJOE \
> 		 -o -name '*.orig' -o -name '*.rej' -o -name '*.bak' \
> 		 -o -name '.*.orig' -o -name .*.rej -o -name '.SUMS' \
> 		 -o -name TAGS -o \( -path '*/.deps/*' -a -name '*.P' \) \
> 		\) -exec rm -f {} + \) -o \
> 		\( -type d -a -name autom4te.cache -prune -exec rm -rf {} + \) \)
>  dpkg-source -b .
> dpkg-source: info: using source format '3.0 (quilt)'
> dpkg-source: info: building siconos using existing ./siconos_4.4.0+dfsg.orig.tar.xz
> dpkg-source: info: using patch list from debian/patches/series
> dpkg-source: error: cannot represent change to io/tools/__pycache__/builder_common.cpython-311.pyc: binary file contents changed
> dpkg-source: error: add io/tools/__pycache__/builder_common.cpython-311.pyc in debian/source/include-binaries if you want to store the modified binary in the debian tarball
> dpkg-source: error: unrepresentable changes to source
> dpkg-buildpackage: error: dpkg-source -b . subprocess returned exit status 1
> 
> E: Command 'cd /<<PKGBUILDDIR>> && runuser -u user42 -- dpkg-buildpackage --sanitize-env -us -uc -rfakeroot -S' failed to run.


The full build log is available from:
http://qa-logs.debian.net/2023/08/13/siconos_4.4.0+dfsg-3_unstable.log

If you reassign this bug to another package, please mark it as 'affects'-ing
this package. See https://www.debian.org/Bugs/server-control#affects

If you fail to reproduce this, please provide a build log and diff it with mine
so that we can identify if something relevant changed in the meantime.