   STARTUP │ (Re)initialized boot script
  DIRECTOR │ Launched worker 0
     PHASE │ run
     START │ ./plan.py
   SUCCESS │ ./plan.py
     START │ ./work.py
   SUCCESS │ ./work.py
      FAIL │ cat f1.txt f2.txt > f3.txt
────────────────────────────────── Step info ───────────────────────────────────
Command               cat f1.txt f2.txt > f3.txt
──────────────────────────────── Invalid inputs ────────────────────────────────
Input changed unexpectedly: f1.txt (digest 7ea59e7a ➜ a97fe9ac, size 3 ➜ 15)
────────────────────────────────────────────────────────────────────────────────
     ERROR │ The scheduler has been drained due to unexpected input changes.
   WARNING │ 1 step(s) failed.
   WARNING │ Scheduler is put on hold. Not reporting pending steps.
   WARNING │ Skipping file cleanup due to incomplete build.
   WARNING │ Check logs: .stepup/fail.log .stepup/warning.log
     PHASE │ watch
   UPDATED │ f1.txt
  DIRECTOR │ Stopping workers.
  DIRECTOR │ See you!
