[Bug 1857649] [NEW] installation displays error "cannot remove xxxx (file adress) read-only file", then installer crashes

[Denys Ferreira Malta]

Public bug reported:

..

ProblemType: Bug
DistroRelease: Ubuntu 19.10
Package: ubiquity 19.10.21
ProcVersionSignature: Ubuntu 5.3.0-18.19-generic 5.3.1
Uname: Linux 5.3.0-18-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.20.11-0ubuntu8
Architecture: amd64
CasperVersion: 1.427
CurrentDesktop: ubuntu:GNOME
Date: Thu Dec 26 20:59:39 2019
InstallCmdLine: file=/cdrom/preseed/ubuntu.seed initrd=/casper/initrd quiet splash --- maybe-ubiquity
LiveMediaBuild: Ubuntu 19.10 "Eoan Ermine" - Release amd64 (20191017)
ProcEnviron:
 LANGUAGE=C.UTF-8
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=C.UTF-8
 LC_NUMERIC=C.UTF-8
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: ubiquity (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug eoan ubiquity-19.10.21 ubuntu

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https://bugs.launchpad.net/bugs/1857649

Title:
  installation displays error "cannot remove xxxx (file adress) read-
  only file", then installer crashes

Status in ubiquity package in Ubuntu:
  New

Bug description:
  ..

  ProblemType: Bug
  DistroRelease: Ubuntu 19.10
  Package: ubiquity 19.10.21
  ProcVersionSignature: Ubuntu 5.3.0-18.19-generic 5.3.1
  Uname: Linux 5.3.0-18-generic x86_64
  NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
  ApportVersion: 2.20.11-0ubuntu8
  Architecture: amd64
  CasperVersion: 1.427
  CurrentDesktop: ubuntu:GNOME
  Date: Thu Dec 26 20:59:39 2019
  InstallCmdLine: file=/cdrom/preseed/ubuntu.seed initrd=/casper/initrd quiet splash --- maybe-ubiquity
  LiveMediaBuild: Ubuntu 19.10 "Eoan Ermine" - Release amd64 (20191017)
  ProcEnviron:
   LANGUAGE=C.UTF-8
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=C.UTF-8
   LC_NUMERIC=C.UTF-8
  SourcePackage: ubiquity
  UpgradeStatus: No upgrade log present (probably fresh install)

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