Unable to create ubuntu-sdk-14.10 click chroot

[Chris Wayne]

click 0.4.32.1 running on 14.04

I can't create a click chroot, when I try to run sudo click chroot -a armhf -f ubuntu-sdk-14.10 -s utopic create, I get:

The following packages will be upgraded:
  gnupg
1 upgraded, 0 newly installed, 0 to remove and 851 not upgraded.
Need to get 0 B/610 kB of archives.
After this operation, 0 B of additional disk space will be used.
debconf: delaying package configuration, since apt-utils is not installed
(Reading database ... 107562 files and directories currently installed.)
Preparing to unpack .../gnupg_1.4.16-1.2ubuntu1_amd64.deb ...
Unpacking gnupg (1.4.16-1.2ubuntu1) over (1.4.16-1ubuntu2.1) ...
Processing triggers for man-db (2.6.7.1-1) ...
debconf: unable to initialize frontend: Dialog
debconf: (No usable dialog-like program is installed, so the dialog based frontend cannot be used. at /usr/share/perl5/Debconf/FrontEnd/Dialog.pm line 76.)
debconf: falling back to frontend: Readline
Processing triggers for install-info (5.2.0.dfsg.1-2) ...
/var/lib/dpkg/info/install-info.postinst: 32: /var/lib/dpkg/info/install-info.postinst: update-info-dir: not found
dpkg: error processing package install-info (--unpack):
 subprocess installed post-installation script returned error exit status 127
Errors were encountered while processing:
 install-info
E: Sub-process /usr/bin/dpkg returned an error code (1)
Command returned 100: schroot -u root -c source:click-ubuntu-sdk-14.10-armhf -- /finish.sh
Traceback (most recent call last):
  File "/usr/bin/click", line 86, in <module>
    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 244, in run
    return args.func(parser, args)
  File "/usr/lib/python3/dist-packages/click/commands/chroot.py", line 67, in create
    return chroot.create(args.keep_broken_chroot)
  File "/usr/lib/python3/dist-packages/click/chroot.py", line 473, in create
    self.full_name, ret_code))
click.chroot.ClickChrootException: Failed to create chroot 'click-ubuntu-sdk-14.10-armhf' (exit status 100)

[Chris Wayne (cwayne)]

Oops, I'd forgotten to pipe stderr too:

/var/lib/dpkg/info/install-info.postinst: 32: /var/lib/dpkg/info/install-info.postinst: update-info-dir: not found
dpkg: error processing package install-info (--configure):
 subprocess installed post-installation script returned error exit status 127
Errors were encountered while processing:
 install-info
E: Sub-process /usr/bin/dpkg returned an error code (1)
Command returned 100: schroot -u root -c source:click-ubuntu-sdk-14.10-armhf -- /finish.sh

[Colin Watson (cjwatson)]

Apparently the host node was misconfigured to bind-mount all of /var into click chroots. This is spectacularly invalid and will break the world (including, probably, the host node, as dpkg inside chroots will have done rather arbitrary things to it). I suggest closing the savilerow task too.