Failing build: https://build.chromium.org/p/tryserver.chromium.perf/builders/android_nexus5_perf_bisect/builds/3785

Relevant output:

Traceback (most recent call last):@@@
  File "/b/build/scripts/slave/.recipe_deps/recipe_engine/recipe_engine/run.py", line 413, in run@@@
    recipe_result = recipe_script.run(api, api._engine.properties)@@@
  File "/b/build/scripts/slave/.recipe_deps/recipe_engine/recipe_engine/loader.py", line 57, in run@@@
    self.RunSteps, properties, self.PROPERTIES, api=api)@@@
  File "/b/build/scripts/slave/.recipe_deps/recipe_engine/recipe_engine/loader.py", line 521, in invoke_with_properties@@@
    **additional_args)@@@
  File "/b/build/scripts/slave/.recipe_deps/recipe_engine/recipe_engine/loader.py", line 482, in _invoke_with_properties@@@
    return callable_obj(*props, **additional_args)@@@
  File "/b/build/scripts/slave/recipes/bisection/android_bisect.py", line 113, in RunSteps@@@
    api.auto_bisect.start_try_job(api, update_step=update_step, bot_db=bot_db)@@@
  File "/b/build/scripts/slave/.recipe_deps/recipe_engine/recipe_engine/recipe_api.py", line 238, in _inner@@@
    return func(*a, **kw)@@@
  File "/b/build/scripts/slave/recipe_modules/auto_bisect/api.py", line 380, in start_try_job@@@
    local_bisect.perform_bisect(self, **flags)  # pragma: no cover@@@
  File "/b/build/scripts/slave/recipe_modules/auto_bisect/local_bisect.py", line 34, in perform_bisect@@@
    connected_devices = api.m.chromium_android.devices()@@@
TypeError: 'list' object is not callable@@@

It seems that https://codereview.chromium.org/2045043002 is the most likely culprit.