   STARTUP │ (Re)initialized boot script
  DIRECTOR │ Launched worker 0
     PHASE │ run
     START │ ./plan.py
   SUCCESS │ ./plan.py
     START │ cp -aT example.txt sub/example.txt
   SUCCESS │ cp -aT example.txt sub/example.txt
     START │ ./plan.py  # wd=sub/
   SUCCESS │ ./plan.py  # wd=sub/
     START │ tr '[:lower:]' '[:upper:]' < example.txt > upper.txt  # wd=sub/
   SUCCESS │ tr '[:lower:]' '[:upper:]' < example.txt > upper.txt  # wd=sub/
     START │ cat ../plan.py  # wd=sub/
   SUCCESS │ cat ../plan.py  # wd=sub/
─────────────────────────────── Standard output ────────────────────────────────
#!/usr/bin/env python3
from stepup.core.api import copy, plan, static

static("example.txt")
static("sub/")
static("sub/plan.py")
copy("example.txt", "sub/")
plan("sub/")
────────────────────────────────────────────────────────────────────────────────
  DIRECTOR │ Trying to delete 0 outdated output(s).
     PHASE │ watch
  DIRECTOR │ Stopping workers.
  DIRECTOR │ See you!
