partclone.ext4 fails, but error message makes no sense

[Kevin O'Gorman]

I've got a 256GB partition, sparsely populated, and I want to clone it to a file on an empty 256GB thumb drive. It starts working, but fails with the message "ERROR: file too large". At that point, the thumb drive is just 4% full.

I'll attach output of script(1) for the run as well as /var/log/partclone

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: partclone 0.3.11-1build1
ProcVersionSignature: Ubuntu 4.15.0-54.58-generic 4.15.18
Uname: Linux 4.15.0-54-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.6
Architecture: amd64
Date: Mon Jul 8 20:09:41 2019
InstallationDate: Installed on 2018-10-18 (263 days ago)
InstallationMedia: Xubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725)
SourcePackage: partclone
UpgradeStatus: No upgrade log present (probably fresh install)

[Kevin O'Gorman (kogorman-pacbell)]

Here's the partclone log

[Kevin O'Gorman (kogorman-pacbell)]

Please note that this run was done from the Xubuntu 18.04.2 install media. It may be a limitation of the environment set up by that software, in which case please consider this a feature request for the install media (I have no idea how to submit a bug against them, so I've got to do it this way).