[Debian-astro-maintainers] Bug#966927: gammapy: FTBFS: dpkg-buildpackage: error: dpkg-source -b . subprocess returned exit status 2

[Lucas Nussbaum]

Source: gammapy
Version: 0.17-1
Severity: serious
Justification: FTBFS on amd64
Tags: bullseye sid ftbfs
Usertags: ftbfs-20200802 ftbfs-bullseye

Hi,

During a rebuild of all packages in sid, your package failed to build
on amd64.

Relevant part (hopefully):
>  fakeroot debian/rules clean
> dh clean --with python3 --buildsystem=pybuild
>    dh_auto_clean -O--buildsystem=pybuild
> I: pybuild base:217: python3.8 setup.py clean 
> Compiling gammapy/stats/fit_statistics_cython.pyx because it depends on /usr/lib/python3/dist-packages/Cython/Includes/numpy/__init__.pxd.
> [1/1] Cythonizing gammapy/stats/fit_statistics_cython.pyx
> running clean
> removing '/<<PKGBUILDDIR>>/.pybuild/cpython3_3.8_gammapy/build' (and everything under it)
> 'build/bdist.linux-x86_64' does not exist -- can't clean it
> 'build/scripts-3.8' does not exist -- can't clean it
>    dh_autoreconf_clean -O--buildsystem=pybuild
>    dh_clean -O--buildsystem=pybuild
>  dpkg-source -b .
> dpkg-source: info: using source format '3.0 (quilt)'
> dpkg-source: info: building gammapy using existing ./gammapy_0.17.orig.tar.gz
> dpkg-source: info: using patch list from debian/patches/series
> dpkg-source: info: local changes detected, the modified files are:
>  gammapy-0.17/gammapy/stats/fit_statistics_cython.c
> dpkg-source: error: aborting due to unexpected upstream changes, see /tmp/gammapy_0.17-1.diff.qQQCXp
> dpkg-source: info: you can integrate the local changes with dpkg-source --commit
> dpkg-buildpackage: error: dpkg-source -b . subprocess returned exit status 2
> --------------------------------------------------------------------------------
> Build finished at 2020-08-02T17:22:09Z

The full build log is available from:
   http://qa-logs.debian.net/2020/08/02/gammapy_0.17-1_unstable.log

A list of current common problems and possible solutions is available at
http://wiki.debian.org/qa.debian.org/FTBFS . You're welcome to contribute!

About the archive rebuild: The rebuild was done on EC2 VM instances from
Amazon Web Services, using a clean, minimal and up-to-date chroot. Every
failed build was retried once to eliminate random failures.