Error "trying to overwrite shared changelog.Debian.gz which is different from other instances of package libtasn1-3:amd64"

[Thomas Hood]

# apt-get upgrade
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages will be upgraded:
  libtasn1-3 libtasn1-3:i386
2 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
Need to get 0 B/88.2 kB of archives.
After this operation, 1,024 B disk space will be freed.
Do you want to continue [Y/n]?
(Reading database ... 278803 files and directories currently installed.)
Preparing to replace libtasn1-3:amd64 2.14-2 (using .../libtasn1-3_2.14-2_amd64.deb) ...
Unpacking replacement libtasn1-3:amd64 ...
dpkg: error processing /var/cache/apt/archives/libtasn1-3_2.14-2_amd64.deb (--unpack):
 trying to overwrite shared '/usr/share/doc/libtasn1-3/changelog.Debian.gz', which is different from other instances of package libtasn1-3:amd64
Preparing to replace libtasn1-3:i386 2.14-2 (using .../libtasn1-3_2.14-2_i386.deb) ...
Unpacking replacement libtasn1-3:i386 ...
dpkg: error processing /var/cache/apt/archives/libtasn1-3_2.14-2_i386.deb (--unpack):
 trying to overwrite shared '/usr/share/doc/libtasn1-3/changelog.Debian.gz', which is different from other instances of package libtasn1-3:i386
Errors were encountered while processing:
 /var/cache/apt/archives/libtasn1-3_2.14-2_amd64.deb
 /var/cache/apt/archives/libtasn1-3_2.14-2_i386.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)

[Thomas Hood (jdthood)]

# apt-cache madison libtasn1-3 libtasn1-3:i386 | grep 2.14
libtasn1-3 | 2.14-2 | http://nl.archive.ubuntu.com/ubuntu/ raring/main amd64 Packages
libtasn1-3 | 2.14-2 | http://nl.archive.ubuntu.com/ubuntu/ raring/main Sources
libtasn1-3:i386 | 2.14-2 | http://nl.archive.ubuntu.com/ubuntu/ raring/main i386 Packages

[Thomas Hood (jdthood)]

I was able to work around this by doing

    dpkg --remove --force-all libtasn1 libtasn1-3:i386
    apt-get install libtasn1 libtasn1-3:i386

[Thomas Hood (jdthood)]

It is possible that I had one of those packages installed from Debian Experimental already.

I notice that the Raring packages are not identical to the ones in Experimental, even though they have no Ubuntu version suffix. The difference in size is a surprising.

From http://packages.debian.org/experimental/amd64/libtasn1-3/download :

More information on libtasn1-3_2.14-2_amd64.deb:
Exact Size 68308 Byte (66.7 kByte)
MD5 checksum 49532105310e0bf84180de01055ac225
SHA1 checksum 089200efaad605b396159e5943832e6f6a69469a
SHA256 checksum 958e16b5c72b29c061368bf0d2227f532e5c37ed9b9cdcac494860030ecf7009

From http://packages.ubuntu.com/raring/amd64/libtasn1-3/download :

More information on libtasn1-3_2.14-2_amd64.deb:
Exact Size 43872 Byte (42.8 kByte)
MD5 checksum 8cbf858f6480230d783553fd245d3b23
SHA1 checksum bf45103f8926b0594da5b53b92c4bab64fad16c7
SHA256 checksum 160d4c913dbd81a9fd0f32460fe165f3541f83056378fa756689428e6ebdebec