tracker broken for KDE/X/lightdm

tracker 1.6.2-0ubuntu1.1 on 16.04 could be made to work for KDE/X/lightdm
- https://bugzilla.gnome.org/show_bug.cgi?id=769715#c12
- DBUS_SESSION_BUS_ADDRESS has an incorrect value

on 16.10 it’s beyond repair:

dpkg --status tracker | egrep ^V
Version: 1.10.0-1ubuntu1

tracker reset hard && tracker daemon --start && tracker daemon --list-processes
Found process ID 23118 for 'tracker-extract'
Found process ID 23135 for 'tracker-store'
Found process ID 23145 for 'tracker-miner-user-guides'
Found process ID 23150 for 'tracker-miner-fs'
Found process ID 23155 for 'tracker-miner-apps'
- produces unhealthy tracker

A healthy tracker has one or two tracker entries
tracker daemon --start && tracker daemon --list-processes
Starting miners…
  ✓ Userguides
  ✓ File System
  ✓ Applications
  ✓ Extractor
Found 6 PIDs…
Found process ID 4185 for 'tracker-store'
Found process ID 4196 for 'tracker-miner-fs'
Found process ID 4201 for 'tracker-miner-apps'
Found process ID 4207 for 'tracker-extract'
Found process ID 4229 for 'tracker'
Found process ID 4921 for 'tracker-miner-user-guides'

16/10/Unity 8 and 16.10/GNOME/Wayland are healthy, kde is not

On login tracker kind of works, but after a while the 'tracker' entry dies and tracker is no longer with us.

There are some new fancy race conditions, too:

on reset occasionally
(tracker daemon:13618): Tracker-CRITICAL **: Could not create proxy on the D-Bus session bus, Error calling StartServiceByName for org.freedesktop.Tracker1.Miner.Extract: Timeout was reached

on list processes occasionally:
Could not stat() file '/proc/21722', Error when getting information for file '/proc/21722': No such file or directoryFound 5 PIDs…

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: tracker 1.6.2-0ubuntu1.1
ProcVersionSignature: Ubuntu 4.4.0-47.68-generic 4.4.24
Uname: Linux 4.4.0-47-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
Date: Thu Nov 24 13:57:04 2016
InstallationDate: Installed on 2016-08-26 (89 days ago)
InstallationMedia: Ubuntu-GNOME 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160720)
ProcEnviron:
 TERM=screen
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: tracker
UpgradeStatus: No upgrade log present (probably fresh install)