  DIRECTOR │ Listening on /tmp/stepup-########/director
  DIRECTOR │ Launched worker 0
  DIRECTOR │ Launched worker 1
     PHASE │ run
     START │ ./plan.py
     START │ echo First line. > story.txt; echo Second line. >> story.txt
   SUCCESS │ echo First line. > story.txt; echo Second line. >> story.txt
     START │ grep First story.txt
   SUCCESS │ ./plan.py
   SUCCESS │ grep First story.txt
─────────────────────────────── Standard output ────────────────────────────────
First line.
────────────────────────────────────────────────────────────────────────────────
  WORKFLOW │ Dumped to .stepup/workflow.mpk.xz
     PHASE │ watch
  DIRECTOR │ Stopping workers.
  DIRECTOR │ See you!
