https://luci-milo.appspot.com/buildbot/chromeos/nyan-full-compile-paladin/9624

I have no idea what this is, if it's not flake.

Tracking bug for build failure annotation.

Failure: crc32c signature computed for local file (0+nuCw==) doesn't match cloud-supplied digest (VWWoBg==). Local file (/build/nyan/packages/chromeos-base/chromeos-chrome-61.0.3142.0_rc-r1.debug.tbz2) will be deleted..

cmd=['/mnt/host/source/.cache/common/gsutil_4.19.tar.gz/gsutil/gsutil', '-o', 'Boto:num_retries=10', 'cp', '-v', '--', 'gs://chromeos-prebuilt/board/nyan/chrome-R61-9690.0.0-rc1/packages/chromeos-base/chromeos-chrome-61.0.3142.0_rc-r1.debug.tbz2', u'/build/nyan/packages/chromeos-base/chromeos-chrome-61.0.3142.0_rc-r1.debug.tbz2'], extra env={'BOTO_CONFIG': u'/mnt/host/source/src/private-overlays/chromeos-overlay/googlestorage_account.boto'}
Traceback (most recent call last):
  File "/mnt/host/source/chromite/lib/parallel.py", line 602, in TaskRunner
    task(*x, **task_kwargs)
  File "/mnt/host/source/chromite/lib/parallel.py", line 800, in <lambda>
    fn = lambda idx, task_args: out_queue.put((idx, task(*task_args)))
  File "/mnt/host/source/chromite/scripts/cros_install_debug_syms.py", line 94, in Install
    self._gs_context.Copy(url, archive, debug_level=logging.DEBUG)
  File "/mnt/host/source/chromite/lib/gs.py", line 870, in Copy
    raise
  File "/mnt/host/source/chromite/lib/gs.py", line 847, in Copy
    result = self.DoCommand(cmd, **kwargs)
  File "/mnt/host/source/chromite/lib/gs.py", line 783, in DoCommand
    raise GSCommandError(e.msg, e.result, e.exception)
GSCommandError: return code: 1; command: /mnt/host/source/.cache/common/gsutil_4.19.tar.gz/gsutil/gsutil -o 'Boto:num_retries=10' cp -v -- gs://chromeos-prebuilt/board/nyan/chrome-R61-9690.0.0-rc1/packages/chromeos-base/chromeos-chrome-61.0.3142.0_rc-r1.debug.tbz2 /build/nyan/packages/chromeos-base/chromeos-chrome-61.0.3142.0_rc-r1.debug.tbz2