package lxd 3.0.3-0ubuntu1~18.04.1 failed to install/upgrade: new lxd package pre-installation script subprocess returned error exit status 1

[Malte Jan Kaffenberger]

happened while do-release-upgrade.

ProblemType: Package
DistroRelease: Ubuntu 20.04
Package: lxd 3.0.3-0ubuntu1~18.04.1
ProcVersionSignature: Ubuntu 4.15.0-122.124-generic 4.15.18
Uname: Linux 4.15.0-122-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.10
Architecture: amd64
CasperMD5CheckResult: skip
Date: Sat Oct 31 14:56:38 2020
ErrorMessage: new lxd package pre-installation script subprocess returned error exit status 1
Python3Details: /usr/bin/python3.8, Python 3.8.5, python3-minimal, 3.8.2-0ubuntu2
PythonDetails: /usr/bin/python2.7, Python 2.7.18, python-is-python2, 2.7.17-4
RelatedPackageVersions:
 dpkg 1.19.7ubuntu3
 apt 2.0.2ubuntu0.1
SourcePackage: lxd
Title: package lxd 3.0.3-0ubuntu1~18.04.1 failed to install/upgrade: new lxd package pre-installation script subprocess returned error exit status 1
UpgradeStatus: Upgraded to focal on 2020-10-31 (0 days ago)

[Stéphane Graber (stgraber)]

Was that inside a container or on a physical system / VM ?

[Malte Jan Kaffenberger (maltejk)]

This is a VM.

[Stéphane Graber (stgraber)]

Thanks.

The error is:
error: cannot perform the following tasks:
- Setup snap "snapd" (9721) security profiles (cannot reload udev rules: exit status 1
udev output:
Failed to wait for daemon to reply: Broken pipe

Which is coming from snapd in this case.

We've seen similar issues when running inside privileged containers but as this isn't the case here, let's move it to the snapd team to dig deeper.