CodeChecker check stops with "ValueError: need more than 2 values to unpack"
```
[INFO] - clang-tidy analyzed Unified_cpp_gfx_src0.cpp successfully.
Exception in thread Thread-3:
Traceback (most recent call last):
  File "/usr/lib/python2.7/threading.py", line 810, in __bootstrap_inner
    self.run()
  File "/usr/lib/python2.7/threading.py", line 763, in run
    self.__target(*self.__args, **self.__kwargs)
  File "/usr/lib/python2.7/multiprocessing/pool.py", line 396, in _handle_results
    cache[job]._set(i, obj)
  File "/usr/lib/python2.7/multiprocessing/pool.py", line 599, in _set
    self._callback(self._value)
  File "/data/jenkins/codechecker_package/CodeChecker/cc_lib/python2.7/codechecker_lib/analysis_manager.py", line 35, in worker_result_handler
    for res, skipped, analyzer_type in results:
ValueError: need more than 2 values to unpack
```

And the analysis freezes 

diff --git a/codechecker_lib/analysis_manager.py b/codechecker_lib/analysis_manager.py
index a1f5f671..44f13837 100644
--- a/codechecker_lib/analysis_manager.py
+++ b/codechecker_lib/analysis_manager.py
@@ -67,10 +67,10 @@ def check(check_data):
     args, action, context, analyzer_config_map, skp_handler, \\
         report_output_dir, use_db = check_data
 
+    skipped = False
     try:
         # if one analysis fails the check fails
         return_codes = 0
-        skipped = False
         for source in action.sources:
 
             # if there is no skiplist handler there was no skip list file
@@ -135,7 +135,7 @@ def check(check_data):
     except Exception as e:
         LOG.debug_analyzer(str(e))
         traceback.print_exc(file=sys.stdout)
-        return (1, action.analyzer_type)
+        return (1, skipped, action.analyzer_type)
 
 def start_workers(args, actions, context, analyzer_config_map, skp_handler):
     """
['codechecker_lib/analysis_manager.py']