I got the following when crosperf wants to read data from cache.
UTPUT: Storing email message body in /usr/local/google/home/yunlian/clean/src/third_party/toolchain-utils/crosperf/telemetry_crosperf_suites_example_results.
OUTPUT: Storing results of each benchmark run.
Traceback (most recent call last):
  File "./crosperf.py", line 128, in <module>
    Main(sys.argv)
  File "./crosperf.py", line 124, in Main
    runner.Run()
  File "/usr/local/google/home/yunlian/clean/src/third_party/toolchain-utils/crosperf/experiment_runner.py", line 263, in Run
    self._Run(self._experiment)
  File "/usr/local/google/home/yunlian/clean/src/third_party/toolchain-utils/crosperf/experiment_runner.py", line 150, in _Run
    schedv2 = Schedv2(experiment)
  File "/usr/local/google/home/yunlian/clean/src/third_party/toolchain-utils/crosperf/schedv2.py", line 242, in __init__
    self._read_br_cache()
  File "/usr/local/google/home/yunlian/clean/src/third_party/toolchain-utils/crosperf/schedv2.py", line 283, in _read_br_cache
    BenchmarkRunCacheReader(self, self._experiment.benchmark_runs).run()
  File "/usr/local/google/home/yunlian/clean/src/third_party/toolchain-utils/crosperf/schedv2.py", line 210, in run
    br.ReadCache()
  File "/usr/local/google/home/yunlian/clean/src/third_party/toolchain-utils/crosperf/benchmark_run.py", line 78, in ReadCache
    self.result = self.cache.ReadResult()
  File "/usr/local/google/home/yunlian/clean/src/third_party/toolchain-utils/crosperf/results_cache.py", line 723, in ReadResult
    self.test_name, self.suite)
  File "/usr/local/google/home/yunlian/clean/src/third_party/toolchain-utils/crosperf/results_cache.py", line 478, in CreateFromCacheHit
    result.PopulateFromCacheDir(cache_dir, test, suite)
  File "/usr/local/google/home/yunlian/clean/src/third_party/toolchain-utils/crosperf/results_cache.py", line 383, in PopulateFromCacheDir
    self.ProcessResults()
  File "/usr/local/google/home/yunlian/clean/src/third_party/toolchain-utils/crosperf/results_cache.py", line 340, in ProcessResults
    self.keyvals = self.GetKeyvals()
  File "/usr/local/google/home/yunlian/clean/src/third_party/toolchain-utils/crosperf/results_cache.py", line 180, in GetKeyvals
    keyvals_dict, units_dict = self.GetNewKeyvals(keyvals_dict)
  File "/usr/local/google/home/yunlian/clean/src/third_party/toolchain-utils/crosperf/results_cache.py", line 111, in GetNewKeyvals
    result_dict = field_dict[k2]
TypeError: string indices must be integers