  WORKFLOW │ Loaded from .stepup/workflow.mpk.xz
  DIRECTOR │ Launched worker 0
     PHASE │ run
    NOSKIP │ ./plan.py
──────────────────────────── Changes causing rerun ─────────────────────────────
Modified step hash   extended, digest f9085952 ➜ f2fab713, inp_digset f9085952 ➜ f2fab713
Modified env var     ENV_VAR_TEST_STEPUP_PREFIX ='README' ➜ ='FOO'
────────────────────────────── Remained the same ───────────────────────────────
Same inp hash        ./
Same inp hash        plan.py
────────────────────────────────────────────────────────────────────────────────
     START │ ./plan.py
   SUCCESS │ ./plan.py
     START │ grep variable FOO.md ${ENV_VAR_TEST_STEPUP_PREFIX}.txt > FOO-stdout.txt 2> FOO-stderr.txt
   SUCCESS │ grep variable FOO.md ${ENV_VAR_TEST_STEPUP_PREFIX}.txt > FOO-stdout.txt 2> FOO-stderr.txt
     CLEAN │ README-stdout.txt
     CLEAN │ README-stderr.txt
  WORKFLOW │ Dumped to .stepup/workflow.mpk.xz
     PHASE │ watch
  DIRECTOR │ Stopping workers.
  DIRECTOR │ See you!
