./mach static-analyzer check --fix dom/ [...] 0:02.08 readability-uniqueptr-delete-release 0:02.08 0:02.08 0:02.08 Traceback (most recent call last): 0:02.08 main() 0:02.08 file_name_re = re.compile('(' + ')|('.join(args.files) + ')') 0:02.08 File "/home/sylvestre/dev/mozilla/mozilla-central.hg/obj-x86_64-pc-linux-gnu/_virtualenv/lib/python2.7/re.py", line 194, in compile 0:02.09 return _compile(pattern, flags) 0:02.09 File "/home/sylvestre/dev/mozilla/mozilla-central.hg/obj-x86_64-pc-linux-gnu/_virtualenv/lib/python2.7/re.py", line 249, in _compile 0:02.09 p = sre_compile.compile(pattern, flags) 0:02.09 File "/home/sylvestre/dev/mozilla/mozilla-central.hg/obj-x86_64-pc-linux-gnu/_virtualenv/lib/python2.7/sre_compile.py", line 583, in compile 0:02.09 "sorry, but this version only supports 100 named groups" 0:02.09 AssertionError: sorry, but this version only supports 100 named groups Error running mach: ['static-analyzer', 'check', '--fix', 'dom/'] 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: fixed upstream here: https://github.com/llvm-mirror/clang-tools-extra/commit/6da17244b6805ba4d8cef963a09d90d7ecb41f3b#diff-d084b68c49291b42fe7e4d5addb8f7b0