The changes for Focal had a syntax error (double ';;' lines, not present in Jammy) which causes debootstrap to fail early and silently, even for a previously working series.
Original: $ sudo debootstrap --variant=minbase focal /tmp/debootstrap.focal http://br.archive.ubuntu.com/ubuntu ... I: Base system installed successfully. $ echo $? 0 Patched: $ sudo debootstrap --variant=minbase focal /tmp/debootstrap.focal http://br.archive.ubuntu.com/ubuntu $ echo $? 2 Addressed this issue; verified the diff only changed in that regard; and re-uploaded. $ diff -U0 debootstrap_1.0.118ubuntu1.12_1.0.118ubuntu1.13.diff debdiff | grep -v '^@@' | sort | uniq -c | sort 1 +++ debdiff 2024-03-04 21:01:43.500570118 +0000 1 --- debootstrap_1.0.118ubuntu1.12_1.0.118ubuntu1.13.diff 2024-02-26 15:24:26.000000000 +0000 32 +@@ -78,7 +78,14 @@ 32 -+ ;; 32 -@@ -78,7 +78,15 @@ -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2054925 Title: Debootstrap fails for Noble with base-files 13ubuntu7 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/base-files/+bug/2054925/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs