0s autopkgtest [20:08:43]: starting date and time: 2025-10-18 20:08:43+0000 0s autopkgtest [20:08:43]: git checkout: 4b346b80 nova: make wait_reboot return success even when a no-op 0s autopkgtest [20:08:43]: host juju-7f2275-prod-proposed-migration-environment-2; command line: /home/ubuntu/autopkgtest/runner/autopkgtest --output-dir /tmp/autopkgtest-work.xc6ovajo/out --timeout-copy=6000 -a i386 --setup-commands /home/ubuntu/autopkgtest-cloud/worker-config-production/setup-canonical.sh --apt-pocket=proposed=src:python3-defaults --apt-upgrade knot --timeout-short=300 --timeout-copy=20000 --timeout-build=20000 --env=ADT_TEST_TRIGGERS=python3-defaults/3.13.7-2 -- ssh -s /home/ubuntu/autopkgtest/ssh-setup/nova -- --flavor builder-cpu2-ram4-disk20 --security-groups autopkgtest-juju-7f2275-prod-proposed-migration-environment-2@bos03-3.secgroup --name adt-resolute-i386-knot-20251018-200842-juju-7f2275-prod-proposed-migration-environment-2-b557f8d0-2b92-49e0-be56-337e47f3c7fb --image adt/ubuntu-resolute-amd64-server --keyname testbed-juju-7f2275-prod-proposed-migration-environment-2 --net-id=net_prod-proposed-migration-amd64 -e TERM=linux --mirror=http://ftpmaster.internal/ubuntu/ 4s Creating nova instance adt-resolute-i386-knot-20251018-200842-juju-7f2275-prod-proposed-migration-environment-2-b557f8d0-2b92-49e0-be56-337e47f3c7fb from image adt/ubuntu-resolute-amd64-server-20251018.img (UUID 1e43d7d4-3f39-4b59-975d-5a285d0b86c1)... 63s autopkgtest [20:09:46]: testbed dpkg architecture: amd64 63s autopkgtest [20:09:46]: testbed apt version: 3.1.6ubuntu2 64s autopkgtest [20:09:47]: @@@@@@@@@@@@@@@@@@@@ test bed setup 64s autopkgtest [20:09:47]: testbed release detected to be: None 65s autopkgtest [20:09:48]: updating testbed package index (apt update) 65s Get:1 http://ftpmaster.internal/ubuntu resolute-proposed InRelease [83.3 kB] 65s Hit:2 http://ftpmaster.internal/ubuntu resolute InRelease 65s Hit:3 http://ftpmaster.internal/ubuntu resolute-updates InRelease 65s Hit:4 http://ftpmaster.internal/ubuntu resolute-security InRelease 65s Get:5 http://ftpmaster.internal/ubuntu resolute-proposed/main Sources [50.7 kB] 65s Get:6 http://ftpmaster.internal/ubuntu resolute-proposed/restricted Sources [5028 B] 65s Get:7 http://ftpmaster.internal/ubuntu resolute-proposed/universe Sources [456 kB] 66s Get:8 http://ftpmaster.internal/ubuntu resolute-proposed/multiverse Sources [16.7 kB] 66s Get:9 http://ftpmaster.internal/ubuntu resolute-proposed/main amd64 Packages [104 kB] 66s Get:10 http://ftpmaster.internal/ubuntu resolute-proposed/main i386 Packages [59.9 kB] 66s Get:11 http://ftpmaster.internal/ubuntu resolute-proposed/restricted amd64 Packages [28.0 kB] 66s Get:12 http://ftpmaster.internal/ubuntu resolute-proposed/restricted i386 Packages [3208 B] 66s Get:13 http://ftpmaster.internal/ubuntu resolute-proposed/universe amd64 Packages [331 kB] 66s Get:14 http://ftpmaster.internal/ubuntu resolute-proposed/universe i386 Packages [113 kB] 66s Get:15 http://ftpmaster.internal/ubuntu resolute-proposed/multiverse i386 Packages [3088 B] 66s Get:16 http://ftpmaster.internal/ubuntu resolute-proposed/multiverse amd64 Packages [9188 B] 66s Fetched 1262 kB in 1s (1289 kB/s) 67s Reading package lists... 67s Hit:1 http://ftpmaster.internal/ubuntu resolute-proposed InRelease 68s Hit:2 http://ftpmaster.internal/ubuntu resolute InRelease 68s Hit:3 http://ftpmaster.internal/ubuntu resolute-updates InRelease 68s Hit:4 http://ftpmaster.internal/ubuntu resolute-security InRelease 68s Reading package lists... 68s Reading package lists... 69s Building dependency tree... 69s Reading state information... 69s Calculating upgrade... 69s The following packages will be upgraded: 69s apt gir1.2-girepository-2.0 libapt-pkg7.0 libgirepository-1.0-1 69s libpython3-stdlib lto-disabled-list python3 python3-minimal 69s 8 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. 69s Need to get 2763 kB of archives. 69s After this operation, 2048 B of additional disk space will be used. 69s Get:1 http://ftpmaster.internal/ubuntu resolute-proposed/main amd64 python3-minimal amd64 3.13.7-2 [27.8 kB] 69s Get:2 http://ftpmaster.internal/ubuntu resolute-proposed/main amd64 python3 amd64 3.13.7-2 [23.9 kB] 69s Get:3 http://ftpmaster.internal/ubuntu resolute-proposed/main amd64 libpython3-stdlib amd64 3.13.7-2 [10.6 kB] 69s Get:4 http://ftpmaster.internal/ubuntu resolute/main amd64 libapt-pkg7.0 amd64 3.1.8ubuntu1 [1140 kB] 70s Get:5 http://ftpmaster.internal/ubuntu resolute/main amd64 apt amd64 3.1.8ubuntu1 [1438 kB] 70s Get:6 http://ftpmaster.internal/ubuntu resolute/main amd64 libgirepository-1.0-1 amd64 1.86.0-6 [85.9 kB] 70s Get:7 http://ftpmaster.internal/ubuntu resolute/main amd64 gir1.2-girepository-2.0 amd64 1.86.0-6 [25.3 kB] 70s Get:8 http://ftpmaster.internal/ubuntu resolute/main amd64 lto-disabled-list all 71 [12.5 kB] 70s dpkg-preconfigure: unable to re-open stdin: No such file or directory 70s Fetched 2763 kB in 1s (3044 kB/s) 70s (Reading database ... (Reading database ... 5% (Reading database ... 10% (Reading database ... 15% (Reading database ... 20% (Reading database ... 25% (Reading database ... 30% (Reading database ... 35% (Reading database ... 40% (Reading database ... 45% (Reading database ... 50% (Reading database ... 55% (Reading database ... 60% (Reading database ... 65% (Reading database ... 70% (Reading database ... 75% (Reading database ... 80% (Reading database ... 85% (Reading database ... 90% (Reading database ... 95% (Reading database ... 100% (Reading database ... 78439 files and directories currently installed.) 70s Preparing to unpack .../python3-minimal_3.13.7-2_amd64.deb ... 70s Unpacking python3-minimal (3.13.7-2) over (3.13.7-1) ... 70s Setting up python3-minimal (3.13.7-2) ... 71s (Reading database ... (Reading database ... 5% (Reading database ... 10% (Reading database ... 15% (Reading database ... 20% (Reading database ... 25% (Reading database ... 30% (Reading database ... 35% (Reading database ... 40% (Reading database ... 45% (Reading database ... 50% (Reading database ... 55% (Reading database ... 60% (Reading database ... 65% (Reading database ... 70% (Reading database ... 75% (Reading database ... 80% (Reading database ... 85% (Reading database ... 90% (Reading database ... 95% (Reading database ... 100% (Reading database ... 78439 files and directories currently installed.) 71s Preparing to unpack .../0-python3_3.13.7-2_amd64.deb ... 71s running python pre-rtupdate hooks for python3.13... 71s Unpacking python3 (3.13.7-2) over (3.13.7-1) ... 71s Preparing to unpack .../1-libpython3-stdlib_3.13.7-2_amd64.deb ... 71s Unpacking libpython3-stdlib:amd64 (3.13.7-2) over (3.13.7-1) ... 71s Preparing to unpack .../2-libapt-pkg7.0_3.1.8ubuntu1_amd64.deb ... 71s Unpacking libapt-pkg7.0:amd64 (3.1.8ubuntu1) over (3.1.6ubuntu2) ... 71s Preparing to unpack .../3-apt_3.1.8ubuntu1_amd64.deb ... 71s Unpacking apt (3.1.8ubuntu1) over (3.1.6ubuntu2) ... 71s Preparing to unpack .../4-libgirepository-1.0-1_1.86.0-6_amd64.deb ... 71s Unpacking libgirepository-1.0-1:amd64 (1.86.0-6) over (1.84.0-1) ... 71s Preparing to unpack .../5-gir1.2-girepository-2.0_1.86.0-6_amd64.deb ... 71s Unpacking gir1.2-girepository-2.0:amd64 (1.86.0-6) over (1.84.0-1) ... 71s Preparing to unpack .../6-lto-disabled-list_71_all.deb ... 71s Unpacking lto-disabled-list (71) over (69) ... 71s Setting up lto-disabled-list (71) ... 71s Setting up libgirepository-1.0-1:amd64 (1.86.0-6) ... 71s Setting up libapt-pkg7.0:amd64 (3.1.8ubuntu1) ... 71s Setting up libpython3-stdlib:amd64 (3.13.7-2) ... 71s Setting up apt (3.1.8ubuntu1) ... 72s Setting up python3 (3.13.7-2) ... 72s running python rtupdate hooks for python3.13... 72s running python post-rtupdate hooks for python3.13... 72s Setting up gir1.2-girepository-2.0:amd64 (1.86.0-6) ... 72s Processing triggers for man-db (2.13.1-1) ... 73s Processing triggers for libc-bin (2.42-0ubuntu3) ... 73s autopkgtest [20:09:56]: upgrading testbed (apt dist-upgrade and autopurge) 74s Reading package lists... 74s Building dependency tree... 74s Reading state information... 75s Calculating upgrade... 75s 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. 75s Reading package lists... 75s Building dependency tree... 75s Reading state information... 75s Solving dependencies... 75s 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. 75s autopkgtest [20:09:58]: rebooting testbed after setup commands that affected boot 95s autopkgtest [20:10:18]: testbed running kernel: Linux 6.17.0-5-generic #5-Ubuntu SMP PREEMPT_DYNAMIC Mon Sep 22 10:00:33 UTC 2025 97s autopkgtest [20:10:20]: @@@@@@@@@@@@@@@@@@@@ apt-source knot 105s Get:1 http://ftpmaster.internal/ubuntu resolute/universe knot 3.4.6-2 (dsc) [4246 B] 105s Get:2 http://ftpmaster.internal/ubuntu resolute/universe knot 3.4.6-2 (tar) [1611 kB] 105s Get:3 http://ftpmaster.internal/ubuntu resolute/universe knot 3.4.6-2 (asc) [833 B] 105s Get:4 http://ftpmaster.internal/ubuntu resolute/universe knot 3.4.6-2 (diff) [30.5 kB] 105s gpgv: Signature made Fri May 2 15:31:36 2025 UTC 105s gpgv: using RSA key 23EBCF7E8FC47556787100DFA4254072E373042C 105s gpgv: Can't check signature: No public key 105s dpkg-source: warning: cannot verify inline signature for ./knot_3.4.6-2.dsc: no acceptable signature found 106s autopkgtest [20:10:29]: testing package knot version 3.4.6-2 107s autopkgtest [20:10:30]: build not needed 110s autopkgtest [20:10:33]: test kdig: preparing testbed 111s Reading package lists... 111s Building dependency tree... 111s Reading state information... 111s Solving dependencies... 111s Some packages could not be installed. This may mean that you have 111s requested an impossible situation or if you are using the unstable 111s distribution that some required packages have not yet been created 111s or been moved out of Incoming. 111s The following information may help to resolve the situation: 111s 111s The following packages have unmet dependencies: 111s satisfy:command-line : Depends: iputils-ping but it is not going to be installed 111s Depends: knot-dnsutils:i386 but it is not installable 111s E: Unable to satisfy dependencies. Reached two conflicting decisions: 111s 1. satisfy:command-line:amd64=1 is selected for install 111s 2. satisfy:command-line:amd64 Depends knot-dnsutils:i386 111s but none of the choices are installable: 111s [no choices] 111s autopkgtest: WARNING: Test dependencies are unsatisfiable with using apt pinning. Retrying with using all packages from resolute-proposed 112s Reading package lists... 112s Building dependency tree... 112s Reading state information... 112s Solving dependencies... 112s Some packages could not be installed. This may mean that you have 112s requested an impossible situation or if you are using the unstable 112s distribution that some required packages have not yet been created 112s or been moved out of Incoming. 112s The following information may help to resolve the situation: 112s 112s The following packages have unmet dependencies: 112s satisfy:command-line : Depends: iputils-ping but it is not going to be installed 112s Depends: knot-dnsutils:i386 but it is not installable 112s E: Unable to satisfy dependencies. Reached two conflicting decisions: 112s 1. satisfy:command-line:amd64=1 is selected for install 112s 2. satisfy:command-line:amd64 Depends knot-dnsutils:i386 112s but none of the choices are installable: 112s [no choices] 112s autopkgtest [20:10:35]: test authoritative-server: preparing testbed 112s kdig FAIL badpkg 112s blame: knot 112s badpkg: Test dependencies are unsatisfiable. A common reason is that your testbed is out of date with respect to the archive, and you need to use a current testbed or run apt-get update or use -U. 134s Creating nova instance adt-resolute-i386-knot-20251018-200842-juju-7f2275-prod-proposed-migration-environment-2-b557f8d0-2b92-49e0-be56-337e47f3c7fb from image adt/ubuntu-resolute-amd64-server-20251018.img (UUID 1e43d7d4-3f39-4b59-975d-5a285d0b86c1)... 201s autopkgtest [20:12:04]: testbed dpkg architecture: amd64 201s autopkgtest [20:12:04]: testbed apt version: 3.1.6ubuntu2 202s autopkgtest [20:12:05]: @@@@@@@@@@@@@@@@@@@@ test bed setup 202s autopkgtest [20:12:05]: testbed release detected to be: resolute 203s autopkgtest [20:12:06]: updating testbed package index (apt update) 203s Get:1 http://ftpmaster.internal/ubuntu resolute-proposed InRelease [83.3 kB] 204s Hit:2 http://ftpmaster.internal/ubuntu resolute InRelease 204s Hit:3 http://ftpmaster.internal/ubuntu resolute-updates InRelease 204s Hit:4 http://ftpmaster.internal/ubuntu resolute-security InRelease 204s Get:5 http://ftpmaster.internal/ubuntu resolute-proposed/restricted Sources [5028 B] 204s Get:6 http://ftpmaster.internal/ubuntu resolute-proposed/multiverse Sources [16.7 kB] 204s Get:7 http://ftpmaster.internal/ubuntu resolute-proposed/main Sources [50.7 kB] 204s Get:8 http://ftpmaster.internal/ubuntu resolute-proposed/universe Sources [456 kB] 204s Get:9 http://ftpmaster.internal/ubuntu resolute-proposed/main amd64 Packages [104 kB] 204s Get:10 http://ftpmaster.internal/ubuntu resolute-proposed/main i386 Packages [59.9 kB] 204s Get:11 http://ftpmaster.internal/ubuntu resolute-proposed/restricted i386 Packages [3208 B] 204s Get:12 http://ftpmaster.internal/ubuntu resolute-proposed/restricted amd64 Packages [28.0 kB] 204s Get:13 http://ftpmaster.internal/ubuntu resolute-proposed/universe i386 Packages [113 kB] 204s Get:14 http://ftpmaster.internal/ubuntu resolute-proposed/universe amd64 Packages [331 kB] 204s Get:15 http://ftpmaster.internal/ubuntu resolute-proposed/multiverse amd64 Packages [9188 B] 204s Get:16 http://ftpmaster.internal/ubuntu resolute-proposed/multiverse i386 Packages [3088 B] 204s Fetched 1262 kB in 1s (1102 kB/s) 206s Reading package lists... 206s Hit:1 http://ftpmaster.internal/ubuntu resolute-proposed InRelease 206s Hit:2 http://ftpmaster.internal/ubuntu resolute InRelease 207s Hit:3 http://ftpmaster.internal/ubuntu resolute-updates InRelease 207s Hit:4 http://ftpmaster.internal/ubuntu resolute-security InRelease 208s Reading package lists... 208s Reading package lists... 208s Building dependency tree... 208s Reading state information... 208s Calculating upgrade... 208s The following packages will be upgraded: 208s apt gir1.2-girepository-2.0 libapt-pkg7.0 libgirepository-1.0-1 208s libpython3-stdlib lto-disabled-list python3 python3-minimal 208s 8 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. 208s Need to get 2763 kB of archives. 208s After this operation, 2048 B of additional disk space will be used. 208s Get:1 http://ftpmaster.internal/ubuntu resolute-proposed/main amd64 python3-minimal amd64 3.13.7-2 [27.8 kB] 209s Get:2 http://ftpmaster.internal/ubuntu resolute-proposed/main amd64 python3 amd64 3.13.7-2 [23.9 kB] 209s Get:3 http://ftpmaster.internal/ubuntu resolute-proposed/main amd64 libpython3-stdlib amd64 3.13.7-2 [10.6 kB] 209s Get:4 http://ftpmaster.internal/ubuntu resolute/main amd64 libapt-pkg7.0 amd64 3.1.8ubuntu1 [1140 kB] 209s Get:5 http://ftpmaster.internal/ubuntu resolute/main amd64 apt amd64 3.1.8ubuntu1 [1438 kB] 210s Get:6 http://ftpmaster.internal/ubuntu resolute/main amd64 libgirepository-1.0-1 amd64 1.86.0-6 [85.9 kB] 210s Get:7 http://ftpmaster.internal/ubuntu resolute/main amd64 gir1.2-girepository-2.0 amd64 1.86.0-6 [25.3 kB] 210s Get:8 http://ftpmaster.internal/ubuntu resolute/main amd64 lto-disabled-list all 71 [12.5 kB] 210s dpkg-preconfigure: unable to re-open stdin: No such file or directory 210s Fetched 2763 kB in 1s (1878 kB/s) 210s (Reading database ... (Reading database ... 5% (Reading database ... 10% (Reading database ... 15% (Reading database ... 20% (Reading database ... 25% (Reading database ... 30% (Reading database ... 35% (Reading database ... 40% (Reading database ... 45% (Reading database ... 50% (Reading database ... 55% (Reading database ... 60% (Reading database ... 65% (Reading database ... 70% (Reading database ... 75% (Reading database ... 80% (Reading database ... 85% (Reading database ... 90% (Reading database ... 95% (Reading database ... 100% (Reading database ... 78439 files and directories currently installed.) 210s Preparing to unpack .../python3-minimal_3.13.7-2_amd64.deb ... 210s Unpacking python3-minimal (3.13.7-2) over (3.13.7-1) ... 211s Setting up python3-minimal (3.13.7-2) ... 211s (Reading database ... (Reading database ... 5% (Reading database ... 10% (Reading database ... 15% (Reading database ... 20% (Reading database ... 25% (Reading database ... 30% (Reading database ... 35% (Reading database ... 40% (Reading database ... 45% (Reading database ... 50% (Reading database ... 55% (Reading database ... 60% (Reading database ... 65% (Reading database ... 70% (Reading database ... 75% (Reading database ... 80% (Reading database ... 85% (Reading database ... 90% (Reading database ... 95% (Reading database ... 100% (Reading database ... 78439 files and directories currently installed.) 211s Preparing to unpack .../0-python3_3.13.7-2_amd64.deb ... 211s running python pre-rtupdate hooks for python3.13... 211s Unpacking python3 (3.13.7-2) over (3.13.7-1) ... 211s Preparing to unpack .../1-libpython3-stdlib_3.13.7-2_amd64.deb ... 211s Unpacking libpython3-stdlib:amd64 (3.13.7-2) over (3.13.7-1) ... 211s Preparing to unpack .../2-libapt-pkg7.0_3.1.8ubuntu1_amd64.deb ... 211s Unpacking libapt-pkg7.0:amd64 (3.1.8ubuntu1) over (3.1.6ubuntu2) ... 211s Preparing to unpack .../3-apt_3.1.8ubuntu1_amd64.deb ... 211s Unpacking apt (3.1.8ubuntu1) over (3.1.6ubuntu2) ... 211s Preparing to unpack .../4-libgirepository-1.0-1_1.86.0-6_amd64.deb ... 211s Unpacking libgirepository-1.0-1:amd64 (1.86.0-6) over (1.84.0-1) ... 211s Preparing to unpack .../5-gir1.2-girepository-2.0_1.86.0-6_amd64.deb ... 211s Unpacking gir1.2-girepository-2.0:amd64 (1.86.0-6) over (1.84.0-1) ... 211s Preparing to unpack .../6-lto-disabled-list_71_all.deb ... 212s Unpacking lto-disabled-list (71) over (69) ... 212s Setting up lto-disabled-list (71) ... 212s Setting up libgirepository-1.0-1:amd64 (1.86.0-6) ... 212s Setting up libapt-pkg7.0:amd64 (3.1.8ubuntu1) ... 212s Setting up libpython3-stdlib:amd64 (3.13.7-2) ... 212s Setting up apt (3.1.8ubuntu1) ... 212s Setting up python3 (3.13.7-2) ... 212s running python rtupdate hooks for python3.13... 212s running python post-rtupdate hooks for python3.13... 213s Setting up gir1.2-girepository-2.0:amd64 (1.86.0-6) ... 213s Processing triggers for man-db (2.13.1-1) ... 215s Processing triggers for libc-bin (2.42-0ubuntu3) ... 215s autopkgtest [20:12:18]: upgrading testbed (apt dist-upgrade and autopurge) 217s Reading package lists... 217s Building dependency tree... 217s Reading state information... 217s Calculating upgrade... 217s 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. 218s Reading package lists... 218s Building dependency tree... 218s Reading state information... 218s Solving dependencies... 218s 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. 219s autopkgtest [20:12:22]: rebooting testbed after setup commands that affected boot 242s Reading package lists... 242s Building dependency tree... 242s Reading state information... 242s Solving dependencies... 242s Some packages could not be installed. This may mean that you have 242s requested an impossible situation or if you are using the unstable 242s distribution that some required packages have not yet been created 242s or been moved out of Incoming. 242s The following information may help to resolve the situation: 242s 242s The following packages have unmet dependencies: 242s satisfy:command-line : Depends: knot:i386 but it is not installable 242s Depends: knot-dnsutils:i386 but it is not installable 242s Depends: knot-dnssecutils:i386 but it is not installable 242s E: Unable to satisfy dependencies. Reached two conflicting decisions: 242s 1. satisfy:command-line:amd64=1 is selected for install 242s 2. satisfy:command-line:amd64 Depends knot-dnsutils:i386 242s but none of the choices are installable: 242s [no choices] 242s autopkgtest: WARNING: Test dependencies are unsatisfiable with using apt pinning. Retrying with using all packages from resolute-proposed 242s Reading package lists... 243s Building dependency tree... 243s Reading state information... 243s Solving dependencies... 243s Some packages could not be installed. This may mean that you have 243s requested an impossible situation or if you are using the unstable 243s distribution that some required packages have not yet been created 243s or been moved out of Incoming. 243s The following information may help to resolve the situation: 243s 243s The following packages have unmet dependencies: 243s satisfy:command-line : Depends: knot:i386 but it is not installable 243s Depends: knot-dnsutils:i386 but it is not installable 243s Depends: knot-dnssecutils:i386 but it is not installable 243s E: Unable to satisfy dependencies. Reached two conflicting decisions: 243s 1. satisfy:command-line:amd64=1 is selected for install 243s 2. satisfy:command-line:amd64 Depends knot-dnsutils:i386 243s but none of the choices are installable: 243s [no choices] 243s autopkgtest [20:12:46]: @@@@@@@@@@@@@@@@@@@@ summary 243s kdig FAIL badpkg 243s blame: knot 243s badpkg: Test dependencies are unsatisfiable. A common reason is that your testbed is out of date with respect to the archive, and you need to use a current testbed or run apt-get update or use -U. 243s authoritative-server FAIL badpkg 243s blame: knot 243s badpkg: Test dependencies are unsatisfiable. A common reason is that your testbed is out of date with respect to the archive, and you need to use a current testbed or run apt-get update or use -U. 243s authoritative-server FAIL badpkg 243s blame: knot 243s badpkg: Test dependencies are unsatisfiable. A common reason is that your testbed is out of date with respect to the archive, and you need to use a current testbed or run apt-get update or use -U.