Ubuntu 21.04 installer crashed on encrypted partition install

[Alexey Chernikov]

I tried to install on encrypted partition (/boot unencrypted, / encrypted).

Same steps installing works on 20.04.x images install, but crashes on 21.04 beta

Installing without encryption works

ProblemType: Bug
DistroRelease: Ubuntu 21.04
Package: ubiquity 21.04.13
ProcVersionSignature: Ubuntu 5.11.0-13.14-generic 5.11.7
Uname: Linux 5.11.0-13-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.20.11-0ubuntu61
Architecture: amd64
CasperMD5CheckResult: pass
CasperVersion: 1.461
Date: Sun Apr 4 21:34:44 2021
InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/ubuntu.seed maybe-ubiquity quiet splash ---
LiveMediaBuild: Ubuntu 21.04 "Hirsute Hippo" - Beta amd64 (20210404)
RebootRequiredPkgs:
 linux-image-5.11.0-13-generic
 linux-base
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)

[Ubuntu Foundations Team Bug Bot (crichton)]

Exception during installation:
Apr 4 16:34:35 ubuntu plugininstall.py: Traceback (most recent call last):
Apr 4 16:34:35 ubuntu plugininstall.py: File "/usr/share/ubiquity/plugininstall.py", line 1863, in <module>
Apr 4 16:34:35 ubuntu plugininstall.py: install.run()
Apr 4 16:34:35 ubuntu plugininstall.py: File "/usr/share/ubiquity/plugininstall.py", line 60, in wrapper
Apr 4 16:34:35 ubuntu plugininstall.py: func(self)
Apr 4 16:34:35 ubuntu plugininstall.py: File "/usr/share/ubiquity/plugininstall.py", line 235, in run
Apr 4 16:34:35 ubuntu plugininstall.py: self.configure_recovery_key()
Apr 4 16:34:35 ubuntu plugininstall.py: File "/usr/share/ubiquity/plugininstall.py", line 891, in configure_recovery_key
Apr 4 16:34:35 ubuntu plugininstall.py: lsblk_out = subprocess.check_output(args).decode(sys.stdout.encoding)
Apr 4 16:34:35 ubuntu plugininstall.py: File "/usr/lib/python3.9/subprocess.py", line 424, in check_output
Apr 4 16:34:35 ubuntu plugininstall.py: return run(*popenargs, stdout=PIPE, timeout=timeout, check=True,
Apr 4 16:34:35 ubuntu plugininstall.py: File "/usr/lib/python3.9/subprocess.py", line 528, in run
Apr 4 16:34:35 ubuntu plugininstall.py: raise CalledProcessError(retcode, process.args,
Apr 4 16:34:35 ubuntu plugininstall.py: subprocess.CalledProcessError: Command '['lsblk', '-lp', '-oNAME,FSTYPE', '']' returned non-zero exit status 32.
Apr 4 16:34:35 ubuntu plugininstall.py: