[Bug 2130423] [NEW] do-release-update from 25.04 to 25.10 doesnt work

[Egor]

Public bug reported:

Just

Could not calculate the upgrade 
An unresolvable problem occurred while calculating the upgrade. 

And no choise, just stop

ProblemType: Bug
DistroRelease: Ubuntu 25.04
Package: ubuntu-release-upgrader-core 1:25.04.18
ProcVersionSignature: Ubuntu 6.14.0-35.35-generic 6.14.11
Uname: Linux 6.14.0-35-generic x86_64
ApportVersion: 2.32.0-0ubuntu5.3
Architecture: amd64
CasperMD5CheckResult: unknown
CrashDB: ubuntu
CrashReports: 640:1000:110:54915609:2025-10-31 14:22:13.298041803 +0300:2025-10-31 14:22:05.391840790 +0300:/var/crash/_opt_sourcegit_sourcegit.1000.crash
CurrentDesktop: KDE
Date: Fri Oct 31 14:40:47 2025
InstallationDate: Installed on 2025-06-25 (128 days ago)
InstallationMedia: Kubuntu 24.10 "Oracular Oriole" - Release amd64 (20241007.6)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to plucky on 2025-10-31 (0 days ago)
VarLogDistupgradeAptHistorylog:
 Start-Date: 2025-10-31  14:40:11
 Requested-By: apach (1000)
 End-Date: 2025-10-31  14:40:11
VarLogDistupgradeApttermlog:
 Log started: 2025-10-31  14:40:11
 Log ended: 2025-10-31  14:40:11

** Affects: ubuntu-release-upgrader (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug dist-upgrade plucky

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https://bugs.launchpad.net/bugs/2130423

Title:
  do-release-update from 25.04 to 25.10 doesnt work

Status in ubuntu-release-upgrader package in Ubuntu:
  New

Bug description:
  Just

  Could not calculate the upgrade 
  An unresolvable problem occurred while calculating the upgrade. 

  And no choise, just stop

  ProblemType: Bug
  DistroRelease: Ubuntu 25.04
  Package: ubuntu-release-upgrader-core 1:25.04.18
  ProcVersionSignature: Ubuntu 6.14.0-35.35-generic 6.14.11
  Uname: Linux 6.14.0-35-generic x86_64
  ApportVersion: 2.32.0-0ubuntu5.3
  Architecture: amd64
  CasperMD5CheckResult: unknown
  CrashDB: ubuntu
  CrashReports: 640:1000:110:54915609:2025-10-31 14:22:13.298041803 +0300:2025-10-31 14:22:05.391840790 +0300:/var/crash/_opt_sourcegit_sourcegit.1000.crash
  CurrentDesktop: KDE
  Date: Fri Oct 31 14:40:47 2025
  InstallationDate: Installed on 2025-06-25 (128 days ago)
  InstallationMedia: Kubuntu 24.10 "Oracular Oriole" - Release amd64 (20241007.6)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to plucky on 2025-10-31 (0 days ago)
  VarLogDistupgradeAptHistorylog:
   Start-Date: 2025-10-31  14:40:11
   Requested-By: apach (1000)
   End-Date: 2025-10-31  14:40:11
  VarLogDistupgradeApttermlog:
   Log started: 2025-10-31  14:40:11
   Log ended: 2025-10-31  14:40:11

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