[Pkg-rust-maintainers] Bug#971139: rust-bindgen: FTBFS: unsatisfiable build-dependencies: librust-cexpr-0.3+default-dev (>= 0.3.3-~~), librust-clang-sys-0.28+clang-6-0-dev, librust-clang-sys-0.28+default-dev, librust-clang-sys-0.28+runtime-dev

[Lucas Nussbaum]

Source: rust-bindgen
Version: 0.51.1-4
Severity: serious
Justification: FTBFS on amd64
Tags: bullseye sid ftbfs
Usertags: ftbfs-20200926 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: debhelper (>= 11), dh-cargo (>= 18), cargo, rustc, libstd-rust-dev, librust-bitflags-1+default-dev (>= 1.0.3-~~), librust-cexpr-0.3+default-dev (>= 0.3.3-~~), librust-cfg-if-0.1+default-dev, librust-clang-sys-0.28+clang-6-0-dev, librust-clang-sys-0.28+default-dev, librust-clang-sys-0.28+runtime-dev, librust-clap-2+default-dev, librust-env-logger-0.7+default-dev, librust-lazy-static-1+default-dev, librust-log-0.4+default-dev, librust-peeking-take-while-0.1+default-dev (>= 0.1.2-~~), librust-proc-macro2-1-dev, librust-quote-1-dev, librust-regex-1+default-dev, librust-rustc-hash-1+default-dev (>= 1.0.1-~~), librust-shlex-0.1+default-dev, librust-which-3-dev, clang, build-essential, fakeroot
> Filtered Build-Depends: debhelper (>= 11), dh-cargo (>= 18), cargo, rustc, libstd-rust-dev, librust-bitflags-1+default-dev (>= 1.0.3-~~), librust-cexpr-0.3+default-dev (>= 0.3.3-~~), librust-cfg-if-0.1+default-dev, librust-clang-sys-0.28+clang-6-0-dev, librust-clang-sys-0.28+default-dev, librust-clang-sys-0.28+runtime-dev, librust-clap-2+default-dev, librust-env-logger-0.7+default-dev, librust-lazy-static-1+default-dev, librust-log-0.4+default-dev, librust-peeking-take-while-0.1+default-dev (>= 0.1.2-~~), librust-proc-macro2-1-dev, librust-quote-1-dev, librust-regex-1+default-dev, librust-rustc-hash-1+default-dev (>= 1.0.1-~~), librust-shlex-0.1+default-dev, librust-which-3-dev, clang, build-essential, fakeroot
> 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 [963 B]
> Ign:3 copy:/<<RESOLVERDIR>>/apt_archive ./ Release.gpg
> Get:4 copy:/<<RESOLVERDIR>>/apt_archive ./ Sources [576 B]
> Get:5 copy:/<<RESOLVERDIR>>/apt_archive ./ Packages [662 B]
> Fetched 2201 B in 0s (214 kB/s)
> Reading package lists...
> Reading package lists...
> 
> Install main build dependencies (apt-based resolver)
> ----------------------------------------------------
> 
> Installing build dependencies
> Reading package lists...
> Building dependency tree...
> 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: librust-cexpr-0.3+default-dev (>= 0.3.3-~~) but it is not installable
>                                    Depends: librust-clang-sys-0.28+clang-6-0-dev but it is not installable
>                                    Depends: librust-clang-sys-0.28+default-dev but it is not installable
>                                    Depends: librust-clang-sys-0.28+runtime-dev 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/2020/09/26/rust-bindgen_0.51.1-4_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.