Build failing when trying to run a pinpoint job (e.g., [1]) for Android Nexus 5x. Example failure:
 
https://ci.chromium.org/buildbot/tryserver.chromium.perf/Android%20Compile%20Perf/5068

Traceback (most recent call last):
  File "/b/rr/tmpYD4Yuk/rw/checkout/scripts/slave/.recipe_deps/recipe_engine/recipe_engine/run.py", line 103, in run_steps
    recipe_test_api.DisabledTestData())
  File "/b/rr/tmpYD4Yuk/rw/checkout/scripts/slave/.recipe_deps/recipe_engine/recipe_engine/loader.py", line 693, in create_recipe_api
    setattr(api, k, mapper.instantiate(v))
  File "/b/rr/tmpYD4Yuk/rw/checkout/scripts/slave/.recipe_deps/recipe_engine/recipe_engine/loader.py", line 554, in instantiate
    for name, dep in mod.LOADED_DEPS.iteritems() }
  File "/b/rr/tmpYD4Yuk/rw/checkout/scripts/slave/.recipe_deps/recipe_engine/recipe_engine/loader.py", line 554, in <dictcomp>
    for name, dep in mod.LOADED_DEPS.iteritems() }
  File "/b/rr/tmpYD4Yuk/rw/checkout/scripts/slave/.recipe_deps/recipe_engine/recipe_engine/loader.py", line 554, in instantiate
    for name, dep in mod.LOADED_DEPS.iteritems() }
  File "/b/rr/tmpYD4Yuk/rw/checkout/scripts/slave/.recipe_deps/recipe_engine/recipe_engine/loader.py", line 554, in <dictcomp>
    for name, dep in mod.LOADED_DEPS.iteritems() }
  File "/b/rr/tmpYD4Yuk/rw/checkout/scripts/slave/.recipe_deps/recipe_engine/recipe_engine/loader.py", line 555, in instantiate
    self._instances[mod] = self._instantiator(mod, deps_dict)
  File "/b/rr/tmpYD4Yuk/rw/checkout/scripts/slave/.recipe_deps/recipe_engine/recipe_engine/loader.py", line 649, in instantiator
    mod.API, engine.properties, engine.environ, prop_defs, **kwargs)
  File "/b/rr/tmpYD4Yuk/rw/checkout/scripts/slave/.recipe_deps/recipe_engine/recipe_engine/loader.py", line 636, in invoke_with_properties
    arg_names, **additional_args)
  File "/b/rr/tmpYD4Yuk/rw/checkout/scripts/slave/.recipe_deps/recipe_engine/recipe_engine/loader.py", line 599, in _invoke_with_properties
    return callable_obj(*props, **additional_args)
  File "/b/rr/tmpYD4Yuk/rw/checkout/scripts/slave/.recipe_deps/recipe_engine/recipe_modules/buildbucket/api.py", line 61, in __init__
    util.timestamp_to_datetime(created_ts))
  File "/b/rr/tmpYD4Yuk/rw/checkout/scripts/slave/.recipe_deps/recipe_engine/recipe_modules/buildbucket/util.py", line 87, in timestamp_to_datetime
    assert isinstance(value, (int, long, float)), value
AssertionError: 1546608432757401


[1] https://pinpoint-dot-chromeperf.appspot.com/job/15643eca940000