package mdadm 3.3-2ubuntu7.1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 128

Bug report generated during update from 14.04 to 16.04

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: mdadm 3.3-2ubuntu7.1
ProcVersionSignature: Ubuntu 4.4.0-36.55-generic 4.4.16
Uname: Linux 4.4.0-36-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
Date: Mon Sep 12 06:54:05 2016
DuplicateSignature:
 package:mdadm:3.3-2ubuntu7.1
 Installing new version of config file /etc/init.d/mdadm ...
 dpkg: error processing package mdadm (--configure):
  subprocess installed post-installation script returned error exit status 128
ErrorMessage: subprocess installed post-installation script returned error exit status 128
InstallationDate: Installed on 2013-05-15 (1215 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
Lsusb:
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
 Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
MDadmExamine.dev.sda:
 /dev/sda:
    MBR Magic : aa55
 Partition[0] : 497664 sectors at 2048 (type 83)
 Partition[1] : 77660162 sectors at 501758 (type 05)
MDadmExamine.dev.sda1: Error: command ['/sbin/mdadm', '-E', '/dev/sda1'] failed with exit code 1: mdadm: No md superblock detected on /dev/sda1.
MDadmExamine.dev.sda2:
 /dev/sda2:
    MBR Magic : aa55
 Partition[0] : 77660160 sectors at 2 (type 8e)
MDadmExamine.dev.sda5: Error: command ['/sbin/mdadm', '-E', '/dev/sda5'] failed with exit code 1: mdadm: No md superblock detected on /dev/sda5.
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-36-generic root=/dev/mapper/ubuntu--vg-root ro persistent quiet splash vt.handoff=7
ProcMDstat:
 Personalities : [raid6] [raid5] [raid4] [linear] [multipath] [raid0] [raid1] [raid10]
 md0 : active raid5 sde[4] sdd[2] sdc[1] sdb[0]
       732198912 blocks super 1.2 level 5, 256k chunk, algorithm 2 [4/4] [UUUU]

 unused devices: <none>
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1.1
 apt 1.2.12~ubuntu16.04.1
SourcePackage: mdadm
Title: package mdadm 3.3-2ubuntu7.1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 128
UpgradeStatus: Upgraded to xenial on 2016-09-12 (0 days ago)
dmi.bios.date: 06/05/2008
dmi.bios.vendor: Award Software International, Inc.
dmi.bios.version: F7c
dmi.board.name: 945P-S3
dmi.board.vendor: Gigabyte Technology Co., Ltd.
dmi.board.version: x.x
dmi.chassis.type: 3
dmi.modalias: dmi:bvnAwardSoftwareInternational,Inc.:bvrF7c:bd06/05/2008:svn:pn:pvr:rvnGigabyteTechnologyCo.,Ltd.:rn945P-S3:rvrx.x:cvn:ct3:cvr:
etc.blkid.tab: Error: [Errno 2] No such file or directory: '/etc/blkid.tab'