Resolved non varname bento warnings

[linkous8]

Bento Output:

bandit try-except-pass https://bandit.readthedocs.io/en/latest/plugins/b110_try_except_pass.html
     > measure_driver.py:62                                                           
     ╷                                                                                
   62│   except:                                                                      
     ╵
     = Try, Except, Pass detected.

flake8 ambiguous-variable-name https://lintlyci.github.io/Flake8Rules/rules/E741.html
     > measure_driver.py:235
     ╷
  235│   l = line.decode().strip()
     ╵
     = ambiguous variable name 'l'