[RESEARCH] Check how different logging methods affect memory consumption in a worker

[AlexPykavy]

Cases to consider:

• func (c *Cmd) Output() ([]byte, error) & func (c *Cmd) CombinedOutput() ([]byte, error)
• cmd.Stdout = os.Stdout
• r, cmd.Stdout, err := os.Pipe()
• func (c *Cmd) StdoutPipe() (io.ReadCloser, error)

Cover it with tests if possible, e.g. run worker in a Docker container with memory limit set to 32MB.