I can't tell what the errors mean

Here's the log:
Build (/usr/bin/uck-gui --wait-before-exit) started at 2016-09-05 12:17:15
>> Ubuntu Customization Kit 2.4.7 on Ubuntu 16.04, 4.4.0-36-generic i686
Starting CD remastering on Mon Sep 5 12:17:19 EDT 2016
Customization dir=/home/hershey/tmp/customization-scripts
Removing remastering root dir...
Removing ISO remastering dir...
Mounting ISO image...
mount: /dev/loop0 is write-protected, mounting read-only
Unpacking ISO image...
Unmounting ISO image...
Mounting SquashFS image...
Unpacking SquashFS image...
Unmounting SquashFS image...
Removing win32 files...
Creating root home...
Mounting /proc
Mounting /sys
Mounting /dev/pts
Mounting /tmp
Mounting /home/hershey/tmp/remaster-root-home
Mounting /home/hershey/tmp/remaster-apt-cache
Mounting /run
Mounting /home/hershey/tmp/customization-scripts
Copying fstab/mtab...
Creating DBUS uuid...
Deactivating initctl...
mv: cannot stat '/sbin/initctl': No such file or directory
Deactivating update-grub...
Deactivating grub-probe...
Hacking grub-probe postinst/postrm...
Remembering kernel update state...
>> Customizing: Ubuntu 16.04, 4.4.0-21-generic i586
Get:1 http://security.ubuntu.com/ubuntu xenial-security InRelease [94.5 kB]
Get:2 http://archive.ubuntu.com/ubuntu xenial InRelease [247 kB]
Get:3 http://archive.ubuntu.com/ubuntu xenial-updates InRelease [95.7 kB]
Get:4 http://security.ubuntu.com/ubuntu xenial-security/main i386 Packages [134 kB]
Get:5 http://archive.ubuntu.com/ubuntu xenial/main i386 Packages [1196 kB]
Get:6 http://security.ubuntu.com/ubuntu xenial-security/main Translation-en [56.6 kB]
Get:7 http://security.ubuntu.com/ubuntu xenial-security/universe i386 Packages [40.8 kB]
Get:8 http://security.ubuntu.com/ubuntu xenial-security/universe Translation-en [24.9 kB]
Get:9 http://security.ubuntu.com/ubuntu xenial-security/multiverse i386 Packages [1344 B]
Get:10 http://security.ubuntu.com/ubuntu xenial-security/multiverse Translation-en [628 B]
Get:11 http://archive.ubuntu.com/ubuntu xenial/main Translation-en [568 kB]
Get:12 http://archive.ubuntu.com/ubuntu xenial/universe i386 Packages [7512 kB]
Get:13 http://archive.ubuntu.com/ubuntu xenial/universe Translation-en [4354 kB]
Get:14 http://archive.ubuntu.com/ubuntu xenial/multiverse i386 Packages [140 kB]
Get:15 http://archive.ubuntu.com/ubuntu xenial/multiverse Translation-en [106 kB]
Get:16 http://archive.ubuntu.com/ubuntu xenial-updates/main i386 Packages [378 kB]
Get:17 http://archive.ubuntu.com/ubuntu xenial-updates/main Translation-en [145 kB]
Get:18 http://archive.ubuntu.com/ubuntu xenial-updates/universe i386 Packages [320 kB]
Get:19 http://archive.ubuntu.com/ubuntu xenial-updates/universe Translation-en [111 kB]
Get:20 http://archive.ubuntu.com/ubuntu xenial-updates/multiverse i386 Packages [4280 B]
Get:21 http://archive.ubuntu.com/ubuntu xenial-updates/multiverse Translation-en [2428 B]
Fetched 15.5 MB in 11s (1352 kB/s)
Reading package lists...
Installing language packs (en)...
Reading package lists...
Building dependency tree...
Reading state information...
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
 language-pack-touch-en : Conflicts: language-pack-en but 1:16.04+20160627 is to be installed
E: Unable to correct problems, you have held broken packages.
apt-get install language-pack-en language-pack-en-base language-pack-touch-en failed, error=100
Restoring kernel update state...
Reactivating initctl...
mv: cannot stat '/sbin/initctl.uck_blocked': No such file or directory
Reactivating update-grub...
Reactivating grub-probe...
Reactivating grub-probe postinst/postrm...
Removing /home/username directory...
Removing generated machine uuid...
Removing generated fstab/mtab...
Removing crash reports...
Unmounting /home/hershey/tmp/remaster-root/var/cache/apt...
Unmounting /home/hershey/tmp/remaster-root/tmp/customization-scripts...
Unmounting /home/hershey/tmp/remaster-root/tmp...
Unmounting /home/hershey/tmp/remaster-root/sys...
Unmounting /home/hershey/tmp/remaster-root/run...
Unmounting /home/hershey/tmp/remaster-root/root...
Unmounting /home/hershey/tmp/remaster-root/proc...
Unmounting /home/hershey/tmp/remaster-root/dev/pts...
Cleaning up temporary directories...
Gtk-Message: GtkDialog mapped without a transient parent. This is discouraged.
Build ended at 2016-09-05 12:29:01
Build (/usr/bin/uck-gui --wait-before-exit) started at 2016-09-05 12:33:49
>> Ubuntu Customization Kit 2.4.7 on Ubuntu 16.04, 4.4.0-36-generic i686
Starting CD remastering on Mon Sep 5 12:33:56 EDT 2016
Customization dir=/home/hershey/tmp/customization-scripts
Removing remastering root dir...
Removing ISO remastering dir...
Mounting ISO image...
mount: /dev/loop0 is write-protected, mounting read-only
Unpacking ISO image...
Unmounting ISO image...
Mounting SquashFS image...
Unpacking SquashFS image...
Unmounting SquashFS image...
Removing win32 files...
Creating root home...
Mounting /proc
Mounting /sys
Mounting /dev/pts
Mounting /tmp
Mounting /home/hershey/tmp/remaster-root-home
Mounting /home/hershey/tmp/remaster-apt-cache
Mounting /run
Mounting /home/hershey/tmp/customization-scripts
Copying fstab/mtab...
Creating DBUS uuid...
Deactivating initctl...
mv: cannot stat '/sbin/initctl': No such file or directory
Deactivating update-grub...
Deactivating grub-probe...
Hacking grub-probe postinst/postrm...
Remembering kernel update state...
>> Customizing: Ubuntu 16.04, 4.4.0-21-generic i586
Get:1 http://archive.ubuntu.com/ubuntu xenial InRelease [247 kB]
Get:2 http://security.ubuntu.com/ubuntu xenial-security InRelease [94.5 kB]
Get:3 http://archive.ubuntu.com/ubuntu xenial-updates InRelease [95.7 kB]
Get:4 http://security.ubuntu.com/ubuntu xenial-security/main i386 Packages [134 kB]
Get:5 http://archive.ubuntu.com/ubuntu xenial/main i386 Packages [1196 kB]
Get:6 http://security.ubuntu.com/ubuntu xenial-security/main Translation-en [56.6 kB]
Get:7 http://security.ubuntu.com/ubuntu xenial-security/universe i386 Packages [40.8 kB]
Get:8 http://security.ubuntu.com/ubuntu xenial-security/universe Translation-en [24.9 kB]
Get:9 http://archive.ubuntu.com/ubuntu xenial/main Translation-en [568 kB]
Get:10 http://security.ubuntu.com/ubuntu xenial-security/multiverse i386 Packages [1344 B]
Get:11 http://security.ubuntu.com/ubuntu xenial-security/multiverse Translation-en [628 B]
Get:12 http://archive.ubuntu.com/ubuntu xenial/universe i386 Packages [7512 kB]
Get:13 http://archive.ubuntu.com/ubuntu xenial/universe Translation-en [4354 kB]
Get:14 http://archive.ubuntu.com/ubuntu xenial/multiverse i386 Packages [140 kB]
Get:15 http://archive.ubuntu.com/ubuntu xenial/multiverse Translation-en [106 kB]
Get:16 http://archive.ubuntu.com/ubuntu xenial-updates/main i386 Packages [378 kB]
Get:17 http://archive.ubuntu.com/ubuntu xenial-updates/main Translation-en [145 kB]
Get:18 http://archive.ubuntu.com/ubuntu xenial-updates/universe i386 Packages [320 kB]
Get:19 http://archive.ubuntu.com/ubuntu xenial-updates/universe Translation-en [111 kB]
Get:20 http://archive.ubuntu.com/ubuntu xenial-updates/multiverse i386 Packages [4280 B]
Get:21 http://archive.ubuntu.com/ubuntu xenial-updates/multiverse Translation-en [2428 B]
Fetched 15.5 MB in 11s (1397 kB/s)
Reading package lists...
Installing language packs ()...
Done
Restoring kernel update state...
Reactivating initctl...
mv: cannot stat '/sbin/initctl.uck_blocked': No such file or directory
Reactivating update-grub...
Reactivating grub-probe...
Reactivating grub-probe postinst/postrm...
Removing /home/username directory...
Removing generated machine uuid...
Removing generated fstab/mtab...
Removing crash reports...
Unmounting /home/hershey/tmp/remaster-root/var/cache/apt...
Unmounting /home/hershey/tmp/remaster-root/tmp/customization-scripts...
Unmounting /home/hershey/tmp/remaster-root/tmp...
Unmounting /home/hershey/tmp/remaster-root/sys...
Unmounting /home/hershey/tmp/remaster-root/run...
Unmounting /home/hershey/tmp/remaster-root/root...
Unmounting /home/hershey/tmp/remaster-root/proc...
Unmounting /home/hershey/tmp/remaster-root/dev/pts...
Cleaning up temporary directories...
Running ISO customization script /home/hershey/tmp/customization-scripts/customize_iso...
--2016-09-05 12:44:24-- http://archive.ubuntu.com/ubuntu/ubuntu/ubuntu/dists/xenial/main/source/Sources.gz
Resolving archive.ubuntu.com (archive.ubuntu.com)... 2001:67c:1360:8001::17, 2001:67c:1560:8001::14, 2001:67c:1360:8001::21, ...
Connecting to archive.ubuntu.com (archive.ubuntu.com)|2001:67c:1360:8001::17|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 1102678 (1.1M) [application/x-gzip]
Saving to: ‘/tmp/tmp.TOb02hx1oa/Sources.gz’

     0K .......... .......... .......... .......... .......... 4% 126K 8s
    50K .......... .......... .......... .......... .......... 9% 249K 6s
   100K .......... .......... .......... .......... .......... 13% 6.57M 4s
   150K .......... .......... .......... .......... .......... 18% 16.4M 3s
   200K .......... .......... .......... .......... .......... 23% 249K 3s
   250K .......... .......... .......... .......... .......... 27% 130M 2s
   300K .......... .......... .......... .......... .......... 32% 5.99M 2s
   350K .......... .......... .......... .......... .......... 37% 3.92M 1s
   400K .......... .......... .......... .......... .......... 41% 611K 1s
   450K .......... .......... .......... .......... .......... 46% 4.27M 1s
   500K .......... .......... .......... .......... .......... 51% 3.55M 1s
   550K .......... .......... .......... .......... .......... 55% 4.25M 1s
   600K .......... .......... .......... .......... .......... 60% 127M 1s
   650K .......... .......... .......... .......... .......... 65% 5.01M 1s
   700K .......... .......... .......... .......... .......... 69% 51.9M 0s
   750K .......... .......... .......... .......... .......... 74% 10.2M 0s
   800K .......... .......... .......... .......... .......... 78% 5.91M 0s
   850K .......... .......... .......... .......... .......... 83% 1.19M 0s
   900K .......... .......... .......... .......... .......... 88% 2.11M 0s
   950K .......... .......... .......... .......... .......... 92% 11.5M 0s
  1000K .......... .......... .......... .......... .......... 97% 1.60M 0s
  1050K .......... .......... ...... 100% 39.4M=1.1s

2016-09-05 12:44:25 (1004 KB/s) - ‘/tmp/tmp.TOb02hx1oa/Sources.gz’ saved [1102678/1102678]

--2016-09-05 12:44:26-- http://archive.ubuntu.com/ubuntu/ubuntu/ubuntu/pool/main/g/gfxboot-theme-ubuntu/
Resolving archive.ubuntu.com (archive.ubuntu.com)... 2001:67c:1560:8001::14, 2001:67c:1560:8001::11, 2001:67c:1360:8001::17, ...
Connecting to archive.ubuntu.com (archive.ubuntu.com)|2001:67c:1560:8001::14|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 5525 (5.4K) [text/html]
Saving to: ‘index.html’

     0K ..... 100% 8.84M=0.001s

2016-09-05 12:44:26 (8.84 MB/s) - ‘index.html’ saved [5525/5525]

tar (child): *.tar.gz: Cannot open: No such file or directory
tar (child): Error is not recoverable: exiting now
tar: Child returned status 2
tar: Error is not recoverable: exiting now
Unable to extract gfxboot-theme-ubuntu source package
Gtk-Message: GtkDialog mapped without a transient parent. This is discouraged.