Chrome checkout synced at: 3aaf78725a83d3bd67c30ae3e2cf32eb8ba35ac8 (r457638)
Catapult checkout at: 04bd283195375fd3c2ee62b9b08ce9a51276f13c

What steps will reproduce the problem?
(1) cd $SRC/android/tools/loading
(2) ./run_tests

What is the expected result?

All tests pass.

What happens instead?

The following 5 fail:
- sandwich_prefetch_unittest
- chrome_cache_unittest
- trace_test.webserver_unittest
- wpr_backend_unittest
- sandwich_metrics_unittest


All of the errors appear to have the same root, a python stack similar to:

ImportError: Failed to import test module: sandwich_metrics_unittest
Traceback (most recent call last):
  File "/usr/lib/python2.7/unittest/loader.py", line 254, in _find_tests
    module = self._get_module_from_name(name)
  File "/usr/lib/python2.7/unittest/loader.py", line 232, in _get_module_from_name
    __import__(name)
  File "/usr/local/google/code/clankium/src/tools/android/loading/trace_test/../sandwich_metrics_unittest.py", line 15, in <module>
    import sandwich_metrics as puller
  File "/usr/local/google/code/clankium/src/tools/android/loading/trace_test/../sandwich_metrics.py", line 26, in <module>
    from telemetry.internal.image_processing import video
  File "/usr/local/google/code/clankium/src/third_party/catapult/telemetry/telemetry/internal/image_processing/video.py", line 9, in <module>
    from telemetry.core import platform
  File "/usr/local/google/code/clankium/src/third_party/catapult/telemetry/telemetry/core/platform.py", line 14, in <module>
    from telemetry.internal.platform import (platform_backend as
  File "/usr/local/google/code/clankium/src/third_party/catapult/telemetry/telemetry/internal/platform/platform_backend.py", line 11, in <module>
    from telemetry.internal.platform import tracing_controller_backend
  File "/usr/local/google/code/clankium/src/third_party/catapult/telemetry/telemetry/internal/platform/tracing_controller_backend.py", line 23, in <module>
    from tracing.trace_data import trace_data as trace_data_module
ImportError: No module named trace_data


Looks like there is a "tracing.py" in $SRC/tools/android/loading clashing with a "tracing/__init__.py" in $CATAPULT/tracing.

Not sure for how long these tests have been failing, are they run continuously on some bots?

They are failing now for me on presubmit when trying to upload a CL that touches some files in tools/android/loading.