Function get_cargo_version

configure.py:1502–1519

(cargo)

    return 0

def get_cargo_version(cargo):
  try:
    proc = subprocess.Popen(shlex.split(cargo) + ['--version'],
                            stdin=subprocess.PIPE, stderr=subprocess.PIPE,
                            stdout=subprocess.PIPE)
  except OSError:
    return '0.0'

  with proc:
    cargo_ret = to_utf8(proc.communicate()[0])

  match = re.match(r"cargo ([0-9]+\.[0-9]+\.[0-9]+)", cargo_ret)

  if match:
    return match.group(1)

  warn(f'Could not recognize `cargo`: {cargo_ret}')
  return '0.0'

def get_rustc_version(rustc):
  try: