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				@@ -850,7 +850,7 @@ def main(): 
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				     burndown_warning = "Burndown stats were not collected. Re-run hercules with -burndown." 
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				     burndown_files_warning = \ 
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				-        "Burndown stats for people were not collected. Re-run hercules with " \ 
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				+        "Burndown stats for files were not collected. Re-run hercules with " \ 
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				         "-burndown -burndown-files." 
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				     burndown_people_warning = \ 
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				         "Burndown stats for people were not collected. Re-run hercules with " \ 
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				@@ -861,7 +861,7 @@ def main(): 
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				         try: 
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				             full_header = header + reader.get_burndown_parameters() 
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				         except KeyError: 
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				-            print(burndown_warning) 
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				+            print("project: " + burndown_warning) 
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				             return 
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				         plot_burndown(args, "project", 
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				                       *load_burndown(full_header, *reader.get_project_burndown(), 
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				@@ -876,7 +876,7 @@ def main(): 
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				         try: 
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				             plot_many_burndown(args, "file", full_header, reader.get_files_burndown()) 
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				         except KeyError: 
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				-            print(burndown_files_warning) 
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				+            print("files: " + burndown_files_warning) 
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				     def people_burndown(): 
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				         try: 
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				@@ -887,14 +887,14 @@ def main(): 
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				         try: 
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				             plot_many_burndown(args, "person", full_header, reader.get_people_burndown()) 
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				         except KeyError: 
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				-            print(burndown_people_warning) 
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				+            print("people: " + burndown_people_warning) 
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				     def churn_matrix(): 
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				         try: 
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				             plot_churn_matrix(args, name, *load_churn_matrix( 
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				                 *reader.get_people_interaction(), max_people=args.max_people)) 
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				         except KeyError: 
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				-            print(burndown_people_warning) 
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				+            print("churn_matrix: " + burndown_people_warning) 
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				     def ownership_burndown(): 
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				         try: 
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				@@ -906,7 +906,7 @@ def main(): 
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				             plot_ownership(args, name, *load_ownership( 
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				                 full_header, *reader.get_ownership_burndown(), max_people=args.max_people)) 
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				         except KeyError: 
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				-            print(burndown_people_warning) 
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				+            print("ownership: " + burndown_people_warning) 
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				     def couples(): 
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				         try: 
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