Traceback (most recent call last):
  File "/usr/bin/btest-setsid", line 15, in <module>
    os.execvp(prog, args)
    ~~~~~~~~~^^^^^^^^^^^^
  File "<frozen os>", line 612, in execvp
  File "<frozen os>", line 654, in _execvpe
  File "<frozen os>", line 645, in _execvpe
FileNotFoundError: [Errno 2] No such file or directory