Comment 19 for bug 1313784

I own several remote VPS servers and I see this error on many of them ... here is one example which happend on May 22 2019

Ubuntu 18.04.2 LTS
Linux-4.15.0-50-generic-x86_64-with-Ubuntu-18.04-bionic

DEBIAN_FRONTEND=noninteractive sudo apt-get update && DEBIAN_FRONTEND=noninteractive sudo apt-get --fix-broken install -y
Hit:1 http://nova.clouds.archive.ubuntu.com/ubuntu bionic InRelease
Get:2 http://security.ubuntu.com/ubuntu bionic-security InRelease [88.7 kB]
Hit:3 https://download.docker.com/linux/ubuntu bionic InRelease
Get:4 http://nova.clouds.archive.ubuntu.com/ubuntu bionic-updates InRelease [88.7 kB]
Get:5 http://nova.clouds.archive.ubuntu.com/ubuntu bionic-backports InRelease [74.6 kB]
Get:6 http://security.ubuntu.com/ubuntu bionic-security/main Sources [90.6 kB]
Get:7 http://security.ubuntu.com/ubuntu bionic-security/main amd64 Packages [349 kB]
Fetched 692 kB in 1s (647 kB/s)
Reading package lists...
Reading package lists...
Building dependency tree...
Reading state information...
0 upgraded, 0 newly installed, 0 to remove and 11 not upgraded.

DEBIAN_FRONTEND=noninteractive sudo apt-get -f install -y
Reading package lists...
Building dependency tree...
Reading state information...
0 upgraded, 0 newly installed, 0 to remove and 11 not upgraded.

sudo env DEBIAN_FRONTEND=noninteractive UCF_FORCE_CONFFNEW=YES apt-get -o Dpkg::Options::=--force-confnew -yy dist-upgrade -yq
Reading package lists...
Building dependency tree...
Reading state information...
Calculating upgrade...
The following packages will be upgraded:
  curl libcurl3-gnutls libcurl4 mdadm netplan.io nplan python3-distupgrade
  python3-software-properties python3-urllib3 software-properties-common
  ubuntu-release-upgrader-core
11 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
Need to get 643 kB/1,314 kB of archives.
After this operation, 17.4 kB of additional disk space will be used.
Get:1 http://nova.clouds.archive.ubuntu.com/ubuntu bionic-updates/main amd64 netplan.io amd64 0.97-0ubuntu1~18.04.1 [60.6 kB]
Get:2 http://nova.clouds.archive.ubuntu.com/ubuntu bionic-updates/main amd64 nplan all 0.97-0ubuntu1~18.04.1 [1,800 B]
Get:3 http://nova.clouds.archive.ubuntu.com/ubuntu bionic-updates/main amd64 ubuntu-release-upgrader-core all 1:18.04.33 [25.1 kB]
Get:4 http://nova.clouds.archive.ubuntu.com/ubuntu bionic-updates/main amd64 python3-distupgrade all 1:18.04.33 [107 kB]
Get:5 http://nova.clouds.archive.ubuntu.com/ubuntu bionic-updates/main amd64 mdadm amd64 4.1~rc1-3~ubuntu18.04.2 [416 kB]
Get:6 http://nova.clouds.archive.ubuntu.com/ubuntu bionic-updates/main amd64 software-properties-common all 0.96.24.32.8 [9,992 B]
Get:7 http://nova.clouds.archive.ubuntu.com/ubuntu bionic-updates/main amd64 python3-software-properties all 0.96.24.32.8 [23.7 kB]
Preconfiguring packages ...
Fetched 643 kB in 1s (598 kB/s)
(Reading database ... 30%
Preparing to unpack .../00-netplan.io_0.97-0ubuntu1~18.04.1_amd64.deb ...
Unpacking netplan.io (0.97-0ubuntu1~18.04.1) over (0.96-0ubuntu0.18.04.4) ...
Preparing to unpack .../01-nplan_0.97-0ubuntu1~18.04.1_all.deb ...
Unpacking nplan (0.97-0ubuntu1~18.04.1) over (0.96-0ubuntu0.18.04.4) ...
Preparing to unpack .../02-ubuntu-release-upgrader-core_1%3a18.04.33_all.deb ...
Unpacking ubuntu-release-upgrader-core (1:18.04.33) over (1:18.04.32) ...
Preparing to unpack .../03-python3-distupgrade_1%3a18.04.33_all.deb ...
Unpacking python3-distupgrade (1:18.04.33) over (1:18.04.32) ...
Preparing to unpack .../04-curl_7.58.0-2ubuntu3.7_amd64.deb ...
Unpacking curl (7.58.0-2ubuntu3.7) over (7.58.0-2ubuntu3.6) ...
Preparing to unpack .../05-libcurl4_7.58.0-2ubuntu3.7_amd64.deb ...
Unpacking libcurl4:amd64 (7.58.0-2ubuntu3.7) over (7.58.0-2ubuntu3.6) ...
Preparing to unpack .../06-libcurl3-gnutls_7.58.0-2ubuntu3.7_amd64.deb ...
Unpacking libcurl3-gnutls:amd64 (7.58.0-2ubuntu3.7) over (7.58.0-2ubuntu3.6) ...
Preparing to unpack .../07-mdadm_4.1~rc1-3~ubuntu18.04.2_amd64.deb ...
Unpacking mdadm (4.1~rc1-3~ubuntu18.04.2) over (4.1~rc1-3~ubuntu18.04.1) ...
Preparing to unpack .../08-software-properties-common_0.96.24.32.8_all.deb ...
Unpacking software-properties-common (0.96.24.32.8) over (0.96.24.32.7) ...
Preparing to unpack .../09-python3-software-properties_0.96.24.32.8_all.deb ...
Unpacking python3-software-properties (0.96.24.32.8) over (0.96.24.32.7) ...
Preparing to unpack .../10-python3-urllib3_1.22-1ubuntu0.18.04.1_all.deb ...
Unpacking python3-urllib3 (1.22-1ubuntu0.18.04.1) over (1.22-1) ...
Processing triggers for ureadahead (0.100.0-21) ...
Setting up libcurl3-gnutls:amd64 (7.58.0-2ubuntu3.7) ...
Setting up libcurl4:amd64 (7.58.0-2ubuntu3.7) ...
Setting up netplan.io (0.97-0ubuntu1~18.04.1) ...
Setting up mdadm (4.1~rc1-3~ubuntu18.04.2) ...
update-initramfs: deferring update (trigger activated)
Sourcing file `/etc/default/grub'
Sourcing file `/etc/default/grub.d/50-cloudimg-settings.cfg'
Generating grub configuration file ...
Found linux image: /boot/vmlinuz-4.15.0-50-generic
Found initrd image: /boot/initrd.img-4.15.0-50-generic
Found linux image: /boot/vmlinuz-4.15.0-48-generic
Found initrd image: /boot/initrd.img-4.15.0-48-generic
File descriptor 3 (pipe:[5141714]) leaked on lvs invocation. Parent PID 2982: /bin/sh
done
update-rc.d: warning: start and stop actions are no longer supported; falling back to defaults
Processing triggers for libc-bin (2.27-3ubuntu1) ...
Setting up nplan (0.97-0ubuntu1~18.04.1) ...
Processing triggers for systemd (237-3ubuntu10.21) ...
Processing triggers for man-db (2.8.3-2ubuntu0.1) ...
Setting up python3-software-properties (0.96.24.32.8) ...
Setting up python3-urllib3 (1.22-1ubuntu0.18.04.1) ...
Processing triggers for dbus (1.12.2-1ubuntu1) ...
Setting up python3-distupgrade (1:18.04.33) ...
Setting up software-properties-common (0.96.24.32.8) ...
Setting up curl (7.58.0-2ubuntu3.7) ...
Setting up ubuntu-release-upgrader-core (1:18.04.33) ...
Processing triggers for initramfs-tools (0.130ubuntu3.7) ...
update-initramfs: Generating /boot/initrd.img-4.15.0-50-generic

I have several other examples of same error all happened to be using

Ubuntu 18.04.2 LTS
Linux-4.15.0-50-generic-x86_64-with-Ubuntu-18.04-bionic