migration-assistant crashed on ufs partition

[jolo]

During Ubuntu 12.04 amd64 Desktop installation daily build of 5 march, migration-assistant crashed on ufs partition

ubuntu@ubuntu:/var/log$ cat syslog | grep sda2
Apr 6 06:36:56 ubuntu kernel: [ 3.919451] sda: sda1 sda2 sda3 < sda5 sda6 sda7 sda8 sda9 sda10 sda11 sda12 >
Apr 6 06:36:56 ubuntu kernel: [ 3.919452] sda2: <bsd: sda13 sda14 >
Apr 6 04:41:03 ubuntu os-prober: debug: running /usr/lib/os-probes/50mounted-tests on /dev/sda2
Apr 6 04:41:03 ubuntu 50mounted-tests: debug: /dev/sda2 type not recognised; skipping
Apr 6 04:41:06 ubuntu ubiquity[5669]: Device /dev/sda2 not found in os-prober output
Apr 6 04:44:19 ubuntu os-prober: debug: running /usr/lib/os-probes/50mounted-tests on /dev/sda2
Apr 6 04:44:19 ubuntu 50mounted-tests: debug: /dev/sda2 type not recognised; skipping

ubuntu@ubuntu:/var/log$ cat syslog | grep skipping
Apr 6 04:41:03 ubuntu 50mounted-tests: debug: /dev/sda14 type not recognised; skipping
Apr 6 04:41:03 ubuntu 50mounted-tests: debug: /dev/sda2 type not recognised; skipping
Apr 6 04:41:03 ubuntu 50mounted-tests: debug: /dev/sda3 type not recognised; skipping
Apr 6 04:44:19 ubuntu 50mounted-tests: debug: /dev/sda14 type not recognised; skipping
Apr 6 04:44:19 ubuntu 50mounted-tests: debug: /dev/sda2 type not recognised; skipping
Apr 6 04:44:19 ubuntu 50mounted-tests: debug: /dev/sda3 type not recognised; skipping
Apr 6 04:46:22 ubuntu choose-mirror[17192]: INFO: base system installable from CD; skipping mirror check
A[ 492.019750] ufs was compiled with read-only support, can't be mounted as read-write
[ 642.354539] ufs was compiled with read-only support, can't be mounted as read-write
pr 6 04:46:22 ubuntu choose-mirror[17192]: INFO: base system installable from CD; skipping architecture check

Last two lines dmesg
[ 492.019750] ufs was compiled with read-only support, can't be mounted as read-write
[ 642.354539] ufs was compiled with read-only support, can't be mounted as read-write

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: ubiquity 2.10.7
ProcVersionSignature: Ubuntu 3.2.0-22.35-generic 3.2.14
Uname: Linux 3.2.0-22-generic x86_64
ApportVersion: 2.0-0ubuntu4
Architecture: amd64
CasperVersion: 1.314
Date: Fri Apr 6 06:55:24 2012
InstallCmdLine: noprompt cdrom-detect/try-usb=true persistent file=/cdrom/preseed/ubuntu.seed boot=casper initrd=/casper/initrd.lz quiet splash --
LiveMediaBuild: Ubuntu 12.04 LTS "Precise Pangolin" - Beta amd64 (20120405)
ProcEnviron:
 TERM=unknown
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)