Recovery mode wants root password

[Kev Bowring]

Boot to recovery mode, drop to root shell.

Asked for root password (seemingly actually requiring non-existent root password)

Get sulogin: crypt failed : invalid argument

Install not encrypted.

Image attached (excuse the flash)

ProblemType: Bug
DistroRelease: Ubuntu 15.10
Package: friendly-recovery 0.2.31
ProcVersionSignature: Ubuntu 4.1.0-3.3-generic 4.1.3
Uname: Linux 4.1.0-3-generic x86_64
ApportVersion: 2.18-0ubuntu5
Architecture: amd64
CurrentDesktop: XFCE
Date: Wed Aug 5 21:28:24 2015
InstallationDate: Installed on 2015-05-12 (85 days ago)
InstallationMedia: Xubuntu 15.10 "Wily Werewolf" - Alpha amd64 (20150512)
PackageArchitecture: all
SourcePackage: friendly-recovery
UpgradeStatus: No upgrade log present (probably fresh install)

[Kev Bowring (flocculant)]

Going to assume this is a 'dev install kicking around for a while' thing. Unable to reproduce elsewhere.