Index: lldb/examples/python/crashlog.py
===================================================================
--- lldb/examples/python/crashlog.py
+++ lldb/examples/python/crashlog.py
@@ -26,7 +26,6 @@
 #   PYTHONPATH=/path/to/LLDB.framework/Resources/Python ./crashlog.py ~/Library/Logs/DiagnosticReports/a.crash
 #----------------------------------------------------------------------
 
-from __future__ import print_function
 import cmd
 import contextlib
 import datetime
@@ -43,6 +42,7 @@
 import sys
 import time
 import uuid
+import concurrent.futures
 
 try:
     # First try for LLDB in case PYTHONPATH is already correctly setup.
@@ -269,7 +269,7 @@
             self.resolved = True
             uuid_str = self.get_normalized_uuid_string()
             if self.show_symbol_progress():
-                print('Getting symbols for %s %s...\n' % (uuid_str, self.path), end=' ')
+                print('Getting symbols for %s %s...' % (uuid_str, self.path))
             if os.path.exists(self.dsymForUUIDBinary):
                 dsym_for_uuid_command = '%s %s' % (
                     self.dsymForUUIDBinary, uuid_str)
@@ -319,7 +319,7 @@
                     pass
             if (self.resolved_path and os.path.exists(self.resolved_path)) or (
                     self.path and os.path.exists(self.path)):
-                print('Resolved symbols for %s %s...\n' % (uuid_str, self.path), end=' ')
+                print('Resolved symbols for %s %s...' % (uuid_str, self.path))
                 return True
             else:
                 self.unavailable = True
@@ -914,7 +914,6 @@
         option_parser = CrashLogOptionParser()
         return option_parser.format_help()
 
-
 def SymbolicateCrashLog(crash_log, options):
     if options.debug:
         crash_log.dump()
@@ -961,9 +960,16 @@
                 else:
                     print('error: can\'t find image for identifier "%s"' % ident)
 
-    for image in images_to_load:
-        if image not in loaded_images:
-            err = image.add_module(target)
+    futures = []
+    with concurrent.futures.ThreadPoolExecutor() as executor:
+        def add_module(image, target):
+            return image, image.add_module(target)
+
+        for image in images_to_load:
+            futures.append(executor.submit(add_module, image=image, target=target))
+
+        for future in concurrent.futures.as_completed(futures):
+            image, err = future.result()
             if err:
                 print(err)
             else: