Updating certificates in /etc/ssl/certs... 
173 added, 0 removed; done. Running hooks in /etc/ca-certificates/update.d....
done. 
Processing triggers for sgml-base (1.26+nmu4ubuntu1) ... 
E: 10mount: umount: /var/lib/schroot/mount/click-ubuntu-sdk-15.04-armhf-ce968a83-ebdb-48f1-b435-f34744fdd4a4/home/jrbt: target is busy E: 10mount: (In some cases useful info about processes that E: 10mount: use the device is found by lsof(8) or fuser(1).) 
E: click-ubuntu-sdk-15.04-armhf-ce968a83-ebdb-48f1-b435-f34744fdd4a4: Chroot setup failed: stage=setup-stop 
umount: /var/lib/schroot/mount/click-ubuntu-sdk-15.04-armhf-ce968a83-ebdb-48f1-b435-f34744fdd4a4/home/jrbt: target is busy (In some cases useful info about processes that use the device is found by lsof(8) or fuser(1).) 
umount: /var/lib/schroot/mount/click-ubuntu-sdk-15.04-armhf-ce968a83-ebdb-48f1-b435-f34744fdd4a4/home: target is busy (In some cases useful info about processes that use the device is found by lsof(8) or fuser(1).) 
umount: /var/lib/schroot/mount/click-ubuntu-sdk-15.04-armhf-ce968a83-ebdb-48f1-b435-f34744fdd4a4: target is busy (In some cases useful info about processes that use the device is found by lsof(8) or fuser(1).) 
Command returned 1: schroot -u root -c source:click-ubuntu-sdk-15.04-armhf -- /finish.sh 
Traceback (most recent call last): File "/usr/bin/click", line 86, in sys.exit(main()) File "/usr/bin/click", line 82, in main return mod.run(args) File "/usr/lib/python3/dist-packages/click/commands/chroot.py", line 266, in run return args.func(parser, args) File "/usr/lib/python3/dist-packages/click/commands/chroot.py", line 68, in create return chroot.create(args.keep_broken_chroot) File "/usr/lib/python3/dist-packages/click/chroot.py", line 551, in create self.destroy() File "/usr/lib/python3/dist-packages/click/chroot.py", line 649, in destroy shutil.rmtree(chroot_dir) File "/usr/lib/python3.4/shutil.py", line 464, in rmtree _rmtree_safe_fd(fd, path, onerror) File "/usr/lib/python3.4/shutil.py", line 406, in _rmtree_safe_fd onerror(os.rmdir, fullname, sys.exc_info()) File "/usr/lib/python3.4/shutil.py", line 404, in _rmtree_safe_fd os.rmdir(name, dir_fd=topfd) OSError: [Errno 16] Device or resource busy: 'home' 
There was an error creating the click target, cleaning up 
umount: /var/lib/schroot/mount/click-ubuntu-sdk-15.04-armhf-ce968a83-ebdb-48f1-b435-f34744fdd4a4/home/jrbt: target is busy (In some cases useful info about processes that use the device is found by lsof(8) or fuser(1).) 
umount: 
/var/lib/schroot/mount/click-ubuntu-sdk-15.04-armhf-ce968a83-ebdb-48f1-b435-f34744fdd4a4/home: target is busy (In some cases useful info about processes that use the device is found by lsof(8) or fuser(1).) 
umount: /var/lib/schroot/mount/click-ubuntu-sdk-15.04-armhf-ce968a83-ebdb-48f1-b435-f34744fdd4a4: target is busy (In some cases useful info about processes that use the device is found by lsof(8) or fuser(1).) 
Traceback (most recent call last): File "/usr/bin/click", line 86, in sys.exit(main()) File "/usr/bin/click", line 82, in main return mod.run(args) File "/usr/lib/python3/dist-packages/click/commands/chroot.py", line 266, in run return args.func(parser, args) File "/usr/lib/python3/dist-packages/click/commands/chroot.py", line 91, in destroy return chroot.destroy() File "/usr/lib/python3/dist-packages/click/chroot.py", line 649, in destroy shutil.rmtree(chroot_dir) File "/usr/lib/python3.4/shutil.py", line 464, in rmtree _rmtree_safe_fd(fd, path, onerror) File "/usr/lib/python3.4/shutil.py", line 406, in _rmtree_safe_fd onerror(os.rmdir, fullname, sys.exc_info()) File "/usr/lib/python3.4/shutil.py", line 404, in _rmtree_safe_fd os.rmdir(name, dir_fd=topfd) OSError: [Errno 16] Device or resource busy: 'home' 
Unmounting /var/lib/schroot/mount/click-ubuntu-sdk-15.04-armhf-ce968a83-ebdb-48f1-b435-f34744fdd4a4 
Unmount failed... trying to force 
umount: /var/lib/schroot/mount/click-ubuntu-sdk-15.04-armhf-ce968a83-ebdb-48f1-b435-f34744fdd4a4: target is busy (In some cases useful info about processes that use the device is found by lsof(8) or fuser(1).) 
Unmounting /var/lib/schroot/mount/click-ubuntu-sdk-15.04-armhf-ce968a83-ebdb-48f1-b435-f34744fdd4a4/home 
umount: 
/var/lib/schroot/mount/click-ubuntu-sdk-15.04-armhf-ce968a83-ebdb-48f1-b435-f34744fdd4a4/home: mountpoint not found 
Unmount failed... trying to force 
Unmounting /var/lib/schroot/mount/click-ubuntu-sdk-15.04-armhf-ce968a83-ebdb-48f1-b435-f34744fdd4a4/home failed Unmounting /var/lib/schroot/mount/click-ubuntu-sdk-15.04-armhf-ce968a83-ebdb-48f1-b435-f34744fdd4a4/home/jrbt 
umount: /var/lib/schroot/mount/click-ubuntu-sdk-15.04-armhf-ce968a83-ebdb-48f1-b435-f34744fdd4a4/home: mountpoint not found 
Unmount failed... trying to force 
umount: /var/lib/schroot/mount/click-ubuntu-sdk-15.04-armhf-ce968a83-ebdb-48f1-b435-f34744fdd4a4/home/jrbt: mountpoint not found 
umount: /var/lib/schroot/mount/click-ubuntu-sdk-15.04-armhf-ce968a83-ebdb-48f1-b435-f34744fdd4a4/home/jrbt: mountpoint not found 
Unmounting /var/lib/schroot/mount/click-ubuntu-sdk-15.04-armhf-ce968a83-ebdb-48f1-b435-f34744fdd4a4/home/jrbt failed Deleting /etc/schroot/chroot.d/click-ubuntu-sdk-15.04-armhf 
Deleting /var/lib/schroot/chroots/click-ubuntu-sdk-15.04-armhf 
click target was removed successfully 
---Click exited with errors, please check the output---