I'm trying to fix this as discussed in IRC, that is respawning the D-Bus
test connection (and related mock services) at every test, and having a
longer timeout.

However I'm getting a crash when calling startServices():

http://paste.ubuntu.com/20160205/

The crash seems to happen after one Accounts::Manager object has been
created, and must be related to D-Bus: if I comment out all "new
Accounts::Manager()" from the tests or if I add the
Accounts::Manager::DisableNotifications option to the Accounts::Manager
constructor (which effectively disables any usage of D-Bus in the
library), I don't get any crash when invoking startServices() in later
tests.

I'm still trying to understand why this happens. Note that libaccounts-
qt doesn't use D-Bus itself: it wraps libaccounts-glib, which calls

  g_bus_get_sync (G_BUS_TYPE_SESSION, NULL, &error_int);

This must return the right thing, as the testAccountChanges() test works
fine itself -- it just causes any startServices() invoked afterwards to
fail.

Will continue investigating...

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https://bugs.launchpad.net/bugs/1603706

Title:
  Possible races in tst_daemon tests.

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