install failed crashed with CalledProcessError

Ubuntu jammy (canary) daily ISO install on
- hp dc7700 (c2d-e6320, 5gb, nvidia quadro nvs 290)

(testcase: full disk, internet, no encryption... ie. full disk & defaults)

failure after entry of username/hostname/password

ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: subiquity (unknown)
ProcVersionSignature: Ubuntu 5.13.0-19.19-generic 5.13.14
Uname: Linux 5.13.0-19-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.20.11-0ubuntu73
Architecture: amd64
CasperMD5CheckResult: pass
CasperVersion: 1.465+canary3.3
CrashDB:
 {
        "impl": "launchpad",
        "project": "subiquity",
        "bug_pattern_url": "http://people.canonical.com/~ubuntu-archive/bugpatterns/bugpatterns.xml"
     }
Date: Thu Nov 18 17:47:40 2021
ExecutablePath: /snap/ubuntu-desktop-installer/179/bin/subiquity/subiquity/cmd/server.py
InterpreterPath: /snap/ubuntu-desktop-installer/179/usr/bin/python3.8
LiveMediaBuild: Ubuntu 22.04 LTS "Jammy Jellyfish" - Alpha amd64 (20211117)
MachineType: Hewlett-Packard HP Compaq dc7700 Small Form Factor
ProcAttrCurrent: snap.hostname-desktop-installer.subiquity-server (complain)
ProcCmdline: /snap/hostname-desktop-installer/179/usr/bin/python3.8 -m subiquity.cmd.server --autoinstall=
ProcEnviron:
 LANG=C.UTF-8
 PATH=(custom, no user)
ProcKernelCmdLine: BOOT_IMAGE=/casper/vmlinuz layerfs-path=minimal.standard.live.squashfs maybe-ubiquity --- quiet splash
Python3Details: Error: command ['readlink', '-f', "/usr/bin/which: this version of `which' is deprecated; use `command -v' in scripts instead.\n/usr/bin/python3"] failed with exit code 1: , Error: [Errno 2] No such file or directory: 'Error: command [\'readlink\', \'-f\', "/usr/bin/which: this version of `which\' is deprecated; use `command -v\' in scripts instead.\\n/usr/bin/python3"] failed with exit code 1: ', python3-minimal, 3.9.4-1build1
PythonDetails: N/A
SnapChannel: latest/stable
SnapRevision: 179
SnapUpdated: False
SnapVersion: 0+git.f21d523
SourcePackage: subiquity
Title: install failed crashed with CalledProcessError
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 08/30/2006
dmi.bios.release: 1.5
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: 786E1 v01.05
dmi.board.name: 0A54h
dmi.board.vendor: Hewlett-Packard
dmi.chassis.type: 4
dmi.chassis.vendor: Hewlett-Packard
dmi.modalias: dmi:bvnHewlett-Packard:bvr786E1v01.05:bd08/30/2006:br1.5:svnHewlett-Packard:pnHPCompaqdc7700SmallFormFactor:pvr:skuET090AV:rvnHewlett-Packard:rn0A54h:rvr:cvnHewlett-Packard:ct4:cvr:
dmi.product.family: 103C_53307F
dmi.product.name: HP Compaq dc7700 Small Form Factor
dmi.product.sku: ET090AV
dmi.sys.vendor: Hewlett-Packard