[DRE-maint] Bug#898051: libruby2.5 is marked Multi-Arch: same but has a conflicting file

[Francois Gouget]

Package: libruby2.5
Version: 2.5.1-1
Severity: normal

Dear Maintainer,

Trying to install the amd64 and i386 versions of this
package results in the following error:

# apt-get install libruby2.5:amd64 libruby2.5:i386
[...]
Unpacking libruby2.5:i386 (2.5.1-1) ...
dpkg: error processing archive /var/cache/apt/archives/libruby2.5_2.5.1-1_i386.deb (--unpack):
 trying to overwrite shared '/usr/lib/ruby/gems/2.5.0/specifications/default/fiddle-1.0.0.gemspec', which is different from other instances of package libruby2.5:i386
dpkg-deb: error: paste subprocess was killed by signal (Broken pipe)
Errors were encountered while processing:
 /var/cache/apt/archives/libruby2.5_2.5.1-1_i386.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)


The other multi-arch same Ruby packages depend on this one too so it would be 
great to fix this issue.


-- System Information:
Debian Release: buster/sid
  APT prefers testing
  APT policy: (500, 'testing'), (500, 'stable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.15.0-3-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages libruby2.5 depends on:
ii  libc6              2.27-3
ii  libffi6            3.2.1-8
ii  libgdbm-compat4    1.14.1-6
ii  libgdbm5           1.14.1-6
ii  libgmp10           2:6.1.2+dfsg-3
ii  libncurses5        6.1-1
ii  libreadline7       7.0-3
ii  libssl1.1          1.1.0h-2
ii  libtinfo5          6.1-1
ii  libyaml-0-2        0.1.7-2
pn  rake               <none>
pn  ruby-did-you-mean  <none>
pn  ruby-minitest      <none>
pn  ruby-net-telnet    <none>
pn  ruby-test-unit     <none>
ii  zlib1g             1:1.2.8.dfsg-5

libruby2.5 recommends no packages.

libruby2.5 suggests no packages.

-- no debconf information