Bug#955645: diffoscope: FTBFS: build-dependency not installable: python3-dumppdf

[Lucas Nussbaum]

Source: diffoscope
Version: 138
Severity: serious
Justification: FTBFS on amd64
Tags: bullseye sid ftbfs
Usertags: ftbfs-20200402 ftbfs-bullseye

Hi,

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

Relevant part (hopefully):
> +------------------------------------------------------------------------------+
> | Install package build dependencies                                           |
> +------------------------------------------------------------------------------+
> 
> 
> Setup apt archive
> -----------------
> 
> Merged Build-Depends: abootimg, apktool, bash-completion, binutils-multiarch, black, caca-utils, colord, db-util, debhelper-compat (= 12), default-jdk-headless | default-jdk, device-tree-compiler (>= 1.4.2), dh-python (>= 2.20160818~), docx2txt, dpkg-dev (>= 1.17.14), e2fsprogs, enjarify, ffmpeg, flake8, fontforge-extras, fp-utils, ghc, ghostscript, giflib-tools, gnumeric, gnupg-utils, help2man, imagemagick, jsbeautifier, libarchive-tools, libjs-jquery, libjs-jquery-hotkeys, libjs-jquery-isonscreen, libjs-jquery-tablesorter, libjs-jquery-throttle-debounce, linux-image-amd64 | linux-image-generic, llvm, lz4 | liblz4-tool, mono-utils, mplayer, ocaml-nox, odt2txt, oggvideotools, openssh-client, pgpdump, poppler-utils, procyon-decompiler, python3-all, python3-argcomplete, python3-binwalk, python3-debian, python3-distro, python3-docutils, python3-dumppdf, python3-guestfs, python3-jsondiff, python3-libarchive-c, python3-magic, python3-progressbar, python3-pypdf2, python3-pytest, python3-pytest-cov, python3-pyxattr, python3-rpm, python3-setuptools, python3-tlsh (>= 3.4.1), r-base-core, rpm2cpio, sng, sqlite3, squashfs-tools, tcpdump, unzip, wabt, xmlbeans, xxd | vim-common, zstd, build-essential, fakeroot
> Merged Build-Conflicts: graphicsmagick-imagemagick-compat
> Filtered Build-Depends: abootimg, apktool, bash-completion, binutils-multiarch, black, caca-utils, colord, db-util, debhelper-compat (= 12), default-jdk-headless, device-tree-compiler (>= 1.4.2), dh-python (>= 2.20160818~), docx2txt, dpkg-dev (>= 1.17.14), e2fsprogs, enjarify, ffmpeg, flake8, fontforge-extras, fp-utils, ghc, ghostscript, giflib-tools, gnumeric, gnupg-utils, help2man, imagemagick, jsbeautifier, libarchive-tools, libjs-jquery, libjs-jquery-hotkeys, libjs-jquery-isonscreen, libjs-jquery-tablesorter, libjs-jquery-throttle-debounce, linux-image-amd64, llvm, lz4, mono-utils, mplayer, ocaml-nox, odt2txt, oggvideotools, openssh-client, pgpdump, poppler-utils, procyon-decompiler, python3-all, python3-argcomplete, python3-binwalk, python3-debian, python3-distro, python3-docutils, python3-dumppdf, python3-guestfs, python3-jsondiff, python3-libarchive-c, python3-magic, python3-progressbar, python3-pypdf2, python3-pytest, python3-pytest-cov, python3-pyxattr, python3-rpm, python3-setuptools, python3-tlsh (>= 3.4.1), r-base-core, rpm2cpio, sng, sqlite3, squashfs-tools, tcpdump, unzip, wabt, xmlbeans, xxd, zstd, build-essential, fakeroot
> Filtered Build-Conflicts: graphicsmagick-imagemagick-compat
> dpkg-deb: building package 'sbuild-build-depends-main-dummy' in '/<<RESOLVERDIR>>/apt_archive/sbuild-build-depends-main-dummy.deb'.
> Ign:1 copy:/<<RESOLVERDIR>>/apt_archive ./ InRelease
> Get:2 copy:/<<RESOLVERDIR>>/apt_archive ./ Release [966 B]
> Ign:3 copy:/<<RESOLVERDIR>>/apt_archive ./ Release.gpg
> Get:4 copy:/<<RESOLVERDIR>>/apt_archive ./ Sources [1018 B]
> Get:5 copy:/<<RESOLVERDIR>>/apt_archive ./ Packages [993 B]
> Fetched 2977 B in 0s (0 B/s)
> Reading package lists...
> Reading package lists...
> 
> Install main build dependencies (apt-based resolver)
> ----------------------------------------------------
> 
> Installing build dependencies
> Reading package lists...
> Building dependency tree...
> Reading state information...
> Some packages could not be installed. This may mean that you have
> requested an impossible situation or if you are using the unstable
> distribution that some required packages have not yet been created
> or been moved out of Incoming.
> The following information may help to resolve the situation:
> 
> The following packages have unmet dependencies:
>  sbuild-build-depends-main-dummy : Depends: python3-dumppdf but it is not installable
> E: Unable to correct problems, you have held broken packages.
> apt-get failed.

The full build log is available from:
   http://qa-logs.debian.net/2020/04/02/diffoscope_138_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.