Test C to Py utf-8 marshalling wiht invalid utf-8
https://sentry.io/share/issue/a2f5cf7dd43e45fa9d59cd3295acbc13/
Looks like this leads to "SystemError: gi.FunctionInfo(parse_error) returned a result with an error set"
https://sentry.io/share/issue/a2f5cf7dd43e45fa9d59cd3295acbc13/
Looks like this leads to "SystemError: gi.FunctionInfo(parse_error) returned a result with an error set"