I'm consistently getting this error in catapult CQ:

[81/142] value.heap_profiler_unittest.HeapProfilerUnitTest.testHeapProfiler failed unexpectedly:
  Traceback (most recent call last):
    File "/b/s/w/ir/kitchen-workdir/catapult/tracing/tracing/value/heap_profiler_unittest.py", line 38, in testHeapProfiler
      self.assertEquals(len(properties), 12)
  AssertionError: 11 != 12

This seems completely unrelated to my changes:
https://chromium-review.googlesource.com/c/catapult/+/1404268

+benjhayden could this be related to some of your recent work here?