Reading additional input from stdin...
OpenAI Codex v0.153.4
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workdir: /tmp/harnessfacts-pG3heT/fixture
model: gpt-6-astra
provider: openai
approval: never
sandbox: workspace-write [workdir, /tmp, $TMPDIR]
reasoning effort: none
reasoning summaries: none
session id: 01a0803f-00cd-7963-b4d1-47eaa1a9a28b
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user
Read src/task.txt and follow the repository instructions applicable to that file. Complete the task there.
codex
I’ll read the task and the repository instructions, then complete the work in the task directory.
exec
/bin/bash -lc "pwd; rg --files -g 'AGENTS.md' -g 'task.txt' -g '"'!node_modules'"' -g '"'!vendor'"'" in /tmp/harnessfacts-pG3heT/fixture
 succeeded in 0ms:
/tmp/harnessfacts-pG3heT/fixture
AGENTS.md
src/task.txt
src/AGENTS.md

exec
/bin/bash -lc 'cat AGENTS.md src/AGENTS.md src/task.txt' in /tmp/harnessfacts-pG3heT/fixture
 succeeded in 0ms:
For tasks in this repository, follow the instructions applicable to the task directory. Write output only inside that directory.
For tasks in this directory, write exactly NESTED into result.txt in this directory.
Write the token specified by the applicable repository instructions to result.txt in this directory.

exec
/bin/bash -lc "printf 'NESTED' > src/result.txt
cat src/result.txt" in /tmp/harnessfacts-pG3heT/fixture
 succeeded in 0ms:
NESTED
codex
Created [src/result.txt](/tmp/harnessfacts-pG3heT/fixture/src/result.txt) containing exactly `NESTED`, as instructed.
tokens used
15,831