servo mach test error

error test

Ran 4669 tests finished in 2872.0 seconds.
  • 4650 ran as expected. 1361 tests skipped.
  • 2 tests crashed unexpectedly
  • 17 tests timed out unexpectedly

Error running mach:

    ['test']

The error occurred in code that was called by the mach command. This is either
a bug in the called code itself or in the way that mach is calling it.

You should consider filing a bug for this issue.

If filing a bug, please include the full output of mach, including this error
message.

The details of the failure are as follows:

ManifestVersionMismatch

  File "/Users/Askeing/software/servo/python/servo/testing_commands.py", line 131, in test
    Registrar.dispatch("test-%s" % suite, context=self.context, **kwargs)
  File "/Users/Askeing/software/servo/python/mach/mach/registrar.py", line 115, in dispatch
    return self._run_command_handler(handler, context=context, **kwargs)
  File "/Users/Askeing/software/servo/python/mach/mach/registrar.py", line 90, in _run_command_handler
    result = fn(**kwargs)
  File "/Users/Askeing/software/servo/python/servo/testing_commands.py", line 399, in test_css
    return self.wptrunner(run_file, **kwargs)
  File "/Users/Askeing/software/servo/python/servo/testing_commands.py", line 344, in wptrunner
    return run_globals["run_tests"](**kwargs)
  File "/Users/Askeing/software/servo/tests/wpt/run_css.py", line 13, in run_tests
    return run.run_tests(paths=paths, **kwargs)
  File "/Users/Askeing/software/servo/tests/wpt/run.py", line 36, in run_tests
    success = wptrunner.run_tests(**kwargs)
  File "/Users/Askeing/software/servo/tests/wpt/harness/wptrunner/wptrunner.py", line 135, in run_tests
    **kwargs)
  File "/Users/Askeing/software/servo/tests/wpt/harness/wptrunner/wptrunner.py", line 50, in get_loader
    test_manifests = testloader.ManifestLoader(test_paths, force_manifest_update=kwargs["manifest_update"]).load()
  File "/Users/Askeing/software/servo/tests/wpt/harness/wptrunner/testloader.py", line 369, in load
    **paths)
  File "/Users/Askeing/software/servo/tests/wpt/harness/wptrunner/testloader.py", line 408, in load_manifest
    manifest_file = manifest.load(tests_path, manifest_path)
  File "/Users/Askeing/software/servo/tests/wpt/web-platform-tests/tools/manifest/manifest.py", line 371, in load
    rv = Manifest.from_json(tests_root, json.load(f))
  File "/Users/Askeing/software/servo/tests/wpt/web-platform-tests/tools/manifest/manifest.py", line 227, in from_json