        0/0 |    STARTUP │ (Re)initialized boot script
        0/0 |   DIRECTOR │ Launched worker 0
        0/1 |      PHASE │ run
        0/1 |      START │ runpy ./plan.py
        1/3 |    SUCCESS │ runpy ./plan.py
        1/3 |      START │ copy example.txt sub/example.txt
        2/3 |    SUCCESS │ copy example.txt sub/example.txt
        2/3 |      START │ runpy ./plan.py  # wd=sub/
        3/5 |    SUCCESS │ runpy ./plan.py  # wd=sub/
        3/5 |      START │ runsh tr '[:lower:]' '[:upper:]' < example.txt > upper.txt  # wd=sub/
        4/5 |    SUCCESS │ runsh tr '[:lower:]' '[:upper:]' < example.txt > upper.txt  # wd=sub/
        4/5 |      START │ runsh cat ../plan.py  # wd=sub/
        5/5 |    SUCCESS │ runsh 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/")
────────────────────────────────────────────────────────────────────────────────
        5/5 |   DIRECTOR │ Trying to delete 0 outdated output(s)
        5/5 |      PHASE │ watch
        5/5 |   DIRECTOR │ Stopping workers
        5/5 |   DIRECTOR │ See you!
