Traceback (most recent call last):
  File "/usr/lib/python3.8/runpy.py", line 193, in _run_module_as_main
    return _run_code(code, main_globals, None,
  File "/usr/lib/python3.8/runpy.py", line 86, in _run_code
    exec(code, run_globals)
  File "/usr/lib/python3.8/site-packages/namcap.py", line 247, in <module>
    process_pkgbuild(package, active_modules)
  File "/usr/lib/python3.8/site-packages/namcap.py", line 148, in process_pkgbuild
    ret = rule.analyze(pkginfo, package)
  File "/usr/lib/python3.8/site-packages/Namcap/rules/makedepends.py", line 59, in analyze
    for s in pkginfo["source"]:
  File "/usr/lib/python3.8/site-packages/Namcap/package.py", line 128, in __getitem__
    return self._data[self.canonical_varname(key)]
KeyError: 'source'