void set_stderr(StreamAction);
/** Returns captured output, if any. This may be called while the task is
void set_stderr(StreamAction);
/** Returns captured output, if any. This may be called while the task is
const std::string &get_output() const { return output; }
/** Executes a command and captures its output. If the command exits with
const std::string &get_output() const { return output; }
/** Executes a command and captures its output. If the command exits with