write results on failures

scripts/benchmark.py

@@ -42,9 +42,13 @@ class Cmd:
         self.execution_time = None  # type: Optional[datetime.timedelta]
 
     @property
-    def has_title(self):
+    def has_title(self) -> bool:
         return self.title is not None
 
+    @property
+    def was_executed(self) -> bool:
+        return self.execution_time is not None
+
 
 class Remove(Cmd):
     """Remove command, sensitive to OS."""
@@ -86,8 +90,10 @@ def run_benchmark(commit: str, name: str, result_file_path: str, workdir: str, p
     if os.path.exists(workdir):
         run_cmd(Remove(workdir), cmd_parameters, '.')
     os.makedirs(workdir)
+    try:
         for command in COMMANDS:
             run_cmd(command, cmd_parameters, workdir)
+    finally:
         write_results(COMMANDS, result_file_path, name)
 
 
@@ -107,7 +113,7 @@ def write_results(commands: List[Cmd], result_file_path : str, name: str):
             'timestamp': datetime.datetime.now().timestamp(),
             'OS': platform.platform()
         }
-        for command in (cmd for cmd in commands if cmd.has_title):
+        for command in (cmd for cmd in commands if (cmd.has_title and cmd.was_executed)):
             row[command.title] = command.execution_time.total_seconds()
         writer.writerow(row)
     print('Benchmark completed.')