[regression] mirout crashes when connecting to unity8 or any nested server: [libprotobuf FATAL /usr/include/google/protobuf/repeated_field.h:1408] CHECK failed: (index) < (current_size_):

Bisected. The bug started in:

------------------------------------------------------------
revno: 3943 [merge]
author: Brandon Schaefer <email address hidden>
committer: Tarmac
branch nick: development-branch
timestamp: Mon 2017-01-16 21:13:52 +0000
message:
  Start replacing the internals of the display configuration to display config.

  Note display cards are not a thing in the new display config which reflects in a lot of removing of those things.

  Approved by mir-ci-bot, Alan Griffiths, Cemil Azizoglu.
------------------------------------------------------------

Fix committed into lp:mir at revision None, scheduled for release in mir, milestone 1.0.0

Fix committed to lp:mir/0.26 at revision 4029, scheduled for release in Mir 0.26.2 (if at all)

This bug was fixed in the package mir - 0.26.2+17.04.20170322.1-0ubuntu1

---------------
mir (0.26.2+17.04.20170322.1-0ubuntu1) zesty; urgency=medium

  [ Daniel van Vugt ]
  * New upstream release 0.26.2 (https://launchpad.net/mir/+milestone/0.26.2)
    - Bugs fixed:
      . EDID does not change when hotplugging a monitor (LP: #1660017)
      . [regression] mirout crashes when connecting to unity8 or any nested
        server: [libprotobuf FATAL /usr/include/google/protobuf/repeated_field.
        h:1408] CHECK failed: (index) < (current_size_) (LP: #1661163)
      . Mir server crashed with SIGSEGV in
        mir::compositor::TemporaryBuffer::size() called from
        mir::gl::tessellate_renderable_into_rectangle() (LP: #1664760)
      . Nested servers (Unity8) periodically stutter (half frame rate) with
        Mir 0.26.1 (LP: #1666372)
      . Don't dereference the end iterator in ms::ApplicationSession::
        surface_after() (LP: #1667645)
      . [regression] OSK input shaping no longer works correctly (LP: #1669444)
      . Setting MirWindowSpec parameters always causes window's input_region
        to be reset (LP: #1670876)
      . Subpixel order not included in Mir display information (LP: #1393578)
      . Presentation chains should support various swap interval modes
        (LP: #1673533)
      . Need an extension for GBM buffers to replace
        mir_buffer_get_buffer_package() (LP: #1673534)
      . Seg fault on detect_fd_leaks (LP: #1661498)

 -- Cemil Azizoglu <email address hidden> Wed, 22 Mar 2017 04:54:19 +0000