Yeah this failure has become more of a problem with the CapnProto event
code. Prior to that it wasn't failing for months at a time.

Long term we expect input resampling functionality to get dropped from
Mir, and this test case with it. Because client-side vsync should allow
Unity8 to use the default QML_TOUCH_COMPRESSION instead.

Shorter term, I noticed the new Capnproto code seems to do multiple
mallocs per event. Fixing that could help here.

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https://bugs.launchpad.net/bugs/1570698

Title:
  CI failure in TestClientInput.receives_one_touch_event_per_frame

Status in Mir:
  Triaged
Status in mir package in Ubuntu:
  Triaged

Bug description:
  https://mir-jenkins.ubuntu.com/job/build-2-binpkg-
  mir/arch=i386,compiler=gcc,platform=mesa,release=xenial/863/consoleFull

  02:44:41 11: [ RUN ] TestClientInput.receives_one_touch_event_per_frame
  02:44:41 11: [2016-04-15 02:44:41.425619] mirserver: Starting
  02:44:41 11: [2016-04-15 02:44:41.430805] mirserver: Selected driver: dummy 
(version 0.22.0)
  02:44:41 11: [2016-04-15 02:44:41.499565] mirserver: Using software cursor
  02:44:41 11: [2016-04-15 02:44:41.509983] mirserver: Initial display 
configuration:
  02:44:41 11: [2016-04-15 02:44:41.510510] mirserver: 1.1: VGA 0.0" 0x0mm
  02:44:41 11: [2016-04-15 02:44:41.510809] mirserver: Current mode 1000x800 
60.00Hz
  02:44:41 11: [2016-04-15 02:44:41.511107] mirserver: Preferred mode 1000x800 
60.00Hz
  02:44:41 11: [2016-04-15 02:44:41.511379] mirserver: Logical position +0+0
  02:44:41 11: [2016-04-15 02:44:41.565602] mirserver: Selected input driver: 
mir:stub-input (version: 0.22.0)
  02:44:41 11: [2016-04-15 02:44:41.568428] mirserver: Mir version 0.22.0
  02:44:44 11: 
  02:44:44 11: GMOCK WARNING:
  02:44:44 11: Uninteresting mock function call - returning directly.
  02:44:44 11: Function call: handle_input(touch_event(when=2480338825735318 
(133.240680ms ago), from=3, touch = {{id=1, action=change, tool=finger, 
x=7.68054, y=12.2889, pressure=1, major=5, minor=8, size=8}, modifiers=1))
  02:44:44 11: Stack trace:
  02:44:44 11: 
/��BUILDDIR��/mir-0.22.0+xenial881bzr3443/tests/acceptance-tests/test_client_input.cpp:639:
 Failure
  02:44:44 11: The difference between 1.0f and client_input_events_per_frame is 
0.24000000953674316, which exceeds 0.2f, where
  02:44:44 11: 1.0f evaluates to 1,
  02:44:44 11: client_input_events_per_frame evaluates to 0.75999999046325684, 
and
  02:44:44 11: 0.2f evaluates to 0.20000000298023224.
  02:44:44 11: 
  02:44:44 11: GMOCK WARNING:
  02:44:44 11: Uninteresting mock function call - returning directly.
  02:44:45 11: Function call: handle_input(touch_event(when=2480339119018976 
(10.576963ms ago), from=3, touch = {{id=1, action=change, tool=finger, 
x=7.80214, y=12.4834, pressure=1, major=5, minor=8, size=8}, modifiers=1))
  02:44:45 11: Stack trace:
  02:44:45 11: 
  02:44:45 11: GMOCK WARNING:
  02:44:45 11: Uninteresting mock function call - returning directly.
  02:44:45 11: Function call: handle_input(touch_event(when=2480339135968128 
(14.812916ms ago), from=3, touch = {{id=1, action=change, tool=finger, 
x=7.84436, y=12.551, pressure=1, major=5, minor=8, size=8}, modifiers=1))
  02:44:45 11: Stack trace:
  02:44:45 11: [2016-04-15 02:44:45.407565] mirserver: Stopping
  02:44:45 11: [ FAILED ] TestClientInput.receives_one_touch_event_per_frame 
(4083 ms)

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