upstart crashing on arale since 2016-04

It looks like image 297 was when arale got the new adb with authentication, along with some unity8 packages. Here's the commit log:

http://people.canonical.com/~lzemczak/landing-team/ubuntu-touch/rc-proposed/meizu.en/arale/297.commitlog

Commitlog between the 20160401 and 20160401.1 rootfs.

=== CI Train landings ===
Title: New adb version for target and host taken from Android 5.1.1 This adds a new authentication feature to adb which lets the user acknowledge on the device if a connected laptop/PC is allowed to connect or not. In conjunction with adb this also includes new android packages to add support for this new authentication mechanism for mako and flo. For all other devices we need also device tarball landings to get adb back working with this. This silo now also include a update for indicator-display which will display a popup for the user when a new adb connection is setup.
Owner: morphis ondra charles
Source packages modified: indicator-display android-tools
Changelogs:
 indicator-display (0.1+15.04.20160324.1-0ubuntu1)

  [ Charles Kerr ]
  * When a new device appears to ADB, prompt the user whether or not to
    allow the connection.

 android-tools (5.1.1r36+git20160322-0ubuntu3~overlay1)

  * debian/android-tools-adb.postinst:
    - Don't modify current user's HOME adb config

Included binary packages:
 android-tools-adbd
   from 4.2.2+git20130218-3ubuntu41
     to 5.1.1r36+git20160322-0ubuntu3~overlay1
 indicator-display
   from 0.1+15.04.20150302-0ubuntu1
     to 0.1+15.04.20160324.1-0ubuntu1

=== Normal uploads (or not tracked) ===

 === Upgraded Packages ===
  language-pack-touch-ast from 1:15.04+20160331.1 to 1:15.04+20160331.2
  language-pack-touch-bg from 1:15.04+20160331.1 to 1:15.04+20160331.2
  ...
  language-pack-touch-zh-hans from 1:15.04+20160331.1 to 1:15.04+20160331.2
  language-pack-touch-zh-hant from 1:15.04+20160331.1 to 1:15.04+20160331.2
  qtdeclarative5-qtmir-plugin:armhf from 0.4.8+15.04.20160329.1-0ubuntu1 to 0.4.8+15.04.20160330-0ubuntu1
  qtmir-android:armhf from 0.4.8+15.04.20160329.1-0ubuntu1 to 0.4.8+15.04.20160330-0ubuntu1
  unity8 from 8.12+15.04.20160330-0ubuntu1 to 8.12+15.04.20160401-0ubuntu1
  unity8-common from 8.12+15.04.20160330-0ubuntu1 to 8.12+15.04.20160401-0ubuntu1
  unity8-private:armhf from 8.12+15.04.20160330-0ubuntu1 to 8.12+15.04.20160401-0ubuntu1

Oh, and the list of test runs which recorded an upstart crash:

2016-04-04_18:40:30-arale-28-power_usage_idle/2/
2016-04-08_15:07:15-arale-297-power_usage_idle/2/
2016-04-08_15:49:13-arale-297-power_usage_display_on/6/
2016-04-08_20:16:20-arale-298-power_usage_bt_on_wifi_disconnected/1/
2016-04-08_21:41:17-arale-299-power_usage_idle/8/
2016-04-08_22:01:45-arale-299-power_usage_idle_reduced/4/
2016-04-08_22:22:25-arale-299-power_usage_display_on/4/
2016-04-08_22:22:25-arale-299-power_usage_display_on/8/
2016-04-08_23:13:23-arale-299-power_usage_video/2/
2016-04-08_23:13:23-arale-299-power_usage_video/8/
2016-04-08_23:54:26-arale-299-power_usage_flight_mode_on/1/
2016-04-09_15:44:22-arale-301-power_usage_music/3/
2016-04-09_20:49:41-arale-29-power_usage_display_on/11/
2016-04-09_20:49:41-arale-29-power_usage_display_on/5/
2016-04-10_03:22:33-arale-29-power_usage_music/6/
2016-04-10_13:57:41-arale-29-power_usage_bt_on_wifi_disconnected/4/
2016-04-10_17:39:26-arale-302-power_usage_display_on/3/
2016-04-10_18:05:13-arale-302-power_usage_music/2/
2016-04-20_19:11:17-arale-307-power_usage_flight_mode_on/2/
2016-04-21_02:27:46-arale-309-power_usage_idle_reduced/1/
2016-04-21_02:27:46-arale-309-power_usage_idle_reduced/4/
2016-04-21_22:39:01-arale-310-power_usage_idle/1/
2016-04-21_23:54:06-arale-310-power_usage_display_on/4/
2016-04-25_10:02:37-arale-31-power_usage_idle/3/
2016-04-25_11:00:57-arale-31-power_usage_idle_reduced/7/
2016-04-26_01:41:35-arale-31-power_usage_video/6/
2016-04-26_05:38:19-arale-312-power_usage_idle/2/
2016-04-26_07:04:44-arale-312-power_usage_display_on/4/
2016-04-26_07:04:44-arale-312-power_usage_display_on/6/
2016-04-26_07:35:24-arale-312-power_usage_music/3/
2016-04-27_15:42:41-arale-313-power_usage_video/1/
2016-04-28_03:06:02-arale-314-power_usage_flight_mode_on/3/
2016-05-04_21:10:24-arale-315-power_usage_idle/4/
2016-05-05_15:22:09-arale-317-power_usage_display_on/4/
2016-05-06_16:27:23-arale-32-power_usage_idle_reduced/7/
2016-05-07_09:03:19-arale-318-power_usage_display_on/10/
2016-05-07_09:03:19-arale-318-power_usage_display_on/11/
2016-05-07_09:34:18-arale-318-power_usage_music/6/
2016-05-07_10:16:25-arale-318-power_usage_bt_on_wifi_disconnected/2/
2016-05-12_19:29:53-arale-319-power_usage_video/4/
2016-05-13_00:59:58-arale-320-power_usage_idle_reduced/1/
2016-05-13_17:08:43-arale-322-power_usage_idle/8/
2016-05-13_19:26:11-arale-322-power_usage_flight_mode_on/5/
2016-05-13_19:26:11-arale-322-power_usage_flight_mode_on/6/
2016-05-13_22:25:22-arale-323-power_usage_music/3/
2016-05-14_01:49:40-arale-324-power_usage_idle/6/
2016-05-14_01:49:40-arale-324-power_usage_idle/8/
2016-05-14_02:12:43-arale-324-power_usage_idle_reduced/1/
2016-05-14_03:05:44-arale-324-power_usage_music/7/
2016-05-14_03:27:20-arale-324-power_usage_video/1/
2016-05-14_03:27:20-arale-324-power_usage_video/4/
2016-05-14_03:48:32-arale-324-power_usage_bt_on_wifi_disconnected/2/
2016-05-14_04:10:18-arale-324-power_usage_flight_mode_on/3/
2016-05-14_06:44:11-arale-33-power_usage_music/3/
2016-05-14_10:20:39-arale-325-power_usage_idle/1/
2016-05-14_17:32:22-arale-326-power_usage_bt_on_wifi_disconnected/2/
2016-05-14_20:37:46-arale-327-power_usage_dis...

none of the crashes retraced successfully. Setting to incomplete until it can be reproduced with a good backtrace