20.10 installer crashes

[Richard]

Each time when I attempt to install 20.10, I choose zfs and my location. When I click @continue@ I get a notice that the installer has crashed.

ProblemType: Bug
DistroRelease: Ubuntu 20.10
Package: ubiquity 20.10.2
ProcVersionSignature: Ubuntu 5.4.0-26.30-generic 5.4.30
Uname: Linux 5.4.0-26-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.20.11-0ubuntu38
Architecture: amd64
CasperMD5CheckResult: pass
CasperVersion: 1.449
CurrentDesktop: ubuntu:GNOME
Date: Fri Jul 3 08:54:55 2020
InstallCmdLine: file=/cdrom/preseed/ubuntu.seed initrd=/casper/initrd quiet splash --- maybe-ubiquity
LiveMediaBuild: Ubuntu 20.10 "Groovy Gorilla" - Alpha amd64 (20200609)
ProcEnviron:
 LANGUAGE=en_US.UTF-8
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 LC_NUMERIC=C.UTF-8
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)

[Jean-Baptiste Lallement (jibel)]

Thanks for your report. There was a bug in the calculation of the partition number with zfs installations. This bug is now fixed and will be released as soon as there is an installable build of groovy. It currently fails with bug 1885414.