Started getting this today on fx-team tip (Ubuntu 13.10): past@holo:fx-team$ ./mach xpcshell-test From _tests: Kept 12805 existing; Added/updated 0; Removed 0 files and 0 directories. Error running mach: ['xpcshell-test'] The error occurred in the implementation of the invoked mach command. This should never occur and is likely a bug in the implementation of that command. 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: AttributeError: 'unicode' object has no attribute 'test_paths' File "/home/past/src/fx-team/testing/xpcshell/mach_commands.py", line 333, in run_xpcshell_test return xpcshell.run_test(**params) File "/home/past/src/fx-team/testing/xpcshell/mach_commands.py", line 74, in run_test rerun_failures=rerun_failures) File "/home/past/src/fx-team/testing/xpcshell/mach_commands.py", line 52, in run_suite return self._run_xpcshell_harness(manifest=manifest, **kwargs) File "/home/past/src/fx-team/testing/xpcshell/mach_commands.py", line 124, in _run_xpcshell_harness verbose_output = test_path is not None or (manifest and len(manifest.test_paths())==1)

Why is "manifest" a unicode? That's really weird.

manifest = os.path.join(self.topobjdir, '_tests', 'xpcshell', 'xpcshell.ini') return self._run_xpcshell_harness(manifest=manifest, **kwargs)