2012-03-30 15:03:59,975 DEBUG getRequiredBackports() 2012-03-30 15:03:59,975 DEBUG Searching for pre-requists on CDROM 2012-03-30 15:03:59,976 DEBUG found pre-req '/media/Ubuntu 12.04 LTS amd64/dists/stable/main/dist-upgrader/binary-amd64/libapt-inst1.4_0.8.16~exp12ubuntu6~upgrader1_amd64.deb' to '/tmp/distupgrade.WFBgjQ/backports' 2012-03-30 15:03:59,976 DEBUG found pre-req '/media/Ubuntu 12.04 LTS amd64/dists/stable/main/dist-upgrader/binary-amd64/libapt-pkg4.12_0.8.16~exp12ubuntu6~upgrader1_amd64.deb' to '/tmp/distupgrade.WFBgjQ/backports' 2012-03-30 15:03:59,976 DEBUG found pre-req '/media/Ubuntu 12.04 LTS amd64/dists/stable/main/dist-upgrader/binary-amd64/release-upgrader-libapt-pkg-dev_0.8.16~exp12ubuntu6~upgrader1_amd64.deb' to '/tmp/distupgrade.WFBgjQ/backports' 2012-03-30 15:03:59,976 DEBUG found pre-req '/media/Ubuntu 12.04 LTS amd64/dists/stable/main/dist-upgrader/binary-amd64/release-upgrader-python-apt_0.8.0ubuntu9~upgrader3_amd64.deb' to '/tmp/distupgrade.WFBgjQ/backports' 2012-03-30 15:03:59,976 ERROR Expected backports: 'set(['release-upgrader-python-apt', 'libapt-inst1.4', 'libapt-pkg4.12'])' but got 'set(['release-upgrader-python-apt', 'libapt-inst1.4', 'release-upgrader-libapt-pkg-dev', 'libapt-pkg4.12'])' 2012-03-30 15:04:05,038 DEBUG abort called
Seems like release-upgrader-libapt-pkg-dev is the difference here.
2012-03-30 15:03:59,975 DEBUG getRequiredBack ports() stable/ main/dist- upgrader/ binary- amd64/libapt- inst1.4_ 0.8.16~ exp12ubuntu6~ upgrader1_ amd64.deb' to '/tmp/distupgra de.WFBgjQ/ backports' stable/ main/dist- upgrader/ binary- amd64/libapt- pkg4.12_ 0.8.16~ exp12ubuntu6~ upgrader1_ amd64.deb' to '/tmp/distupgra de.WFBgjQ/ backports' stable/ main/dist- upgrader/ binary- amd64/release- upgrader- libapt- pkg-dev_ 0.8.16~ exp12ubuntu6~ upgrader1_ amd64.deb' to '/tmp/distupgra de.WFBgjQ/ backports' stable/ main/dist- upgrader/ binary- amd64/release- upgrader- python- apt_0.8. 0ubuntu9~ upgrader3_ amd64.deb' to '/tmp/distupgra de.WFBgjQ/ backports' release- upgrader- python- apt', 'libapt-inst1.4', 'libapt-pkg4.12'])' but got 'set([' release- upgrader- python- apt', 'libapt-inst1.4', 'release- upgrader- libapt- pkg-dev' , 'libapt-pkg4.12'])'
2012-03-30 15:03:59,975 DEBUG Searching for pre-requists on CDROM
2012-03-30 15:03:59,976 DEBUG found pre-req '/media/Ubuntu 12.04 LTS amd64/dists/
2012-03-30 15:03:59,976 DEBUG found pre-req '/media/Ubuntu 12.04 LTS amd64/dists/
2012-03-30 15:03:59,976 DEBUG found pre-req '/media/Ubuntu 12.04 LTS amd64/dists/
2012-03-30 15:03:59,976 DEBUG found pre-req '/media/Ubuntu 12.04 LTS amd64/dists/
2012-03-30 15:03:59,976 ERROR Expected backports: 'set(['
2012-03-30 15:04:05,038 DEBUG abort called
Seems like release- upgrader- libapt- pkg-dev is the difference here.