Evidence: Block 40 · Service (block-40)

• block type: block
• date: 2026-08-23
• resulting state: closed/verified
• story points (combined assembled cost): 52679
• execution id: 20260823.114910.696Z-b8005d40

Stories built

• Implement diagnostics and stderr output. (IO-002) [story]

Acceptance tooling authorization

• FEATURE-IO-002.md#io-002-diagnostics-conformance: executable=python3; scope=test; authorization=existing Target environment
• FEATURE-IO-002.md#io-002-channels: executable=python3; scope=test; authorization=existing Target environment

Stacked context

• compass: COMPASS.md (SP 3420)
• implements: FEATURE-IO-002.md (SP 609)
• context: jq-manual.txt (SP 32696)
• context: jq.test (SP 13058)
• context: ARCHITECTURE_compact.md (SP 154)
• stack: python_compact.md (SP 1534)
• stack: common_compact.md (SP 1179)

Build directory changes

• jq_interpreter/init.py
• jq_interpreter/cli.py
• jq_interpreter/errors.py
• jq_interpreter/evaluator.py
• jq_interpreter/parser.py
• tests/test_io_002_diagnostics.py

Pre-build acceptance observation

• RED: io-002-diagnostics-conformance (FEATURE-IO-002.md)

intent: The authoritative corpus cases covering debug, stderr, and halt_error execute and pass. return code: 1 stdout: { "candidate": [ "/mnt/c/Users/barlo/projects/drydock/uat/jq/runs/20260822.044627/build/jq/jq" ], "corpus": "jq.test", "summary": { "pass": 0, "fail": 1, "error": 0, "skip": 0 }, "cases": [ { "line": 2341, "program": "debug", "status": "fail", "detail": "output mismatch", "expect_failure": false, "expected": [ "1" ], "actual": [] } ] } stderr: --- drydock: progress --- cases: pass=0 fail=1 error=0 skip=0 total=1 from=summary --- drydock: end progress --- --- drydock: values at failure --- summary = {'pass': 0, 'fail': 1, 'error': 0, 'skip': 0} --- drydock: end values --- Traceback (most recent call last): File "io-002-diagnostics-conformance.py", line 18, in <module> assert summary["fail"] == 0 and summary["error"] == 0 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ AssertionError

• RED: io-002-channels (FEATURE-IO-002.md)

intent: The selected corpus exercises diagnostic filters while the conformance runner observes the declared process contract. return code: 1 stdout: { "candidate": [ "/mnt/c/Users/barlo/projects/drydock/uat/jq/runs/20260822.044627/build/jq/jq" ], "corpus": "jq.test", "summary": { "pass": 0, "fail": 1, "error": 0, "skip": 0 }, "cases": [ { "line": 2341, "program": "debug", "status": "fail", "detail": "output mismatch", "expect_failure": false, "expected": [ "1" ], "actual": [] } ] } stderr: --- drydock: progress --- cases: pass=0 fail=1 error=0 skip=0 total=1 from=summary --- drydock: end progress --- --- drydock: values at failure --- summary = {'pass': 0, 'fail': 1, 'error': 0, 'skip': 0} --- drydock: end values --- Traceback (most recent call last): File "io-002-channels.py", line 18, in <module> assert summary["fail"] == 0 and summary["error"] == 0 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ AssertionError

Post-build programmatic acceptance

• PASS: io-002-diagnostics-conformance (FEATURE-IO-002.md)

intent: The authoritative corpus cases covering debug, stderr, and halt_error execute and pass. target interpreter: /mnt/c/Users/barlo/projects/drydock/.venv/bin/python3 provisioning: not required return code: 0 stdout: { "candidate": [ "/mnt/c/Users/barlo/projects/drydock/uat/jq/runs/20260822.044627/build/jq/jq" ], "corpus": "jq.test", "summary": { "pass": 1, "fail": 0, "error": 0, "skip": 0 }, "cases": [] }

• PASS: io-002-channels (FEATURE-IO-002.md)

intent: The selected corpus exercises diagnostic filters while the conformance runner observes the declared process contract. target interpreter: /mnt/c/Users/barlo/projects/drydock/.venv/bin/python3 provisioning: not required return code: 0 stdout: { "candidate": [ "/mnt/c/Users/barlo/projects/drydock/uat/jq/runs/20260822.044627/build/jq/jq" ], "corpus": "jq.test", "summary": { "pass": 1, "fail": 0, "error": 0, "skip": 0 }, "cases": [] }

Build summary

RESULT: SUCCESS

FILES CHANGED:

• jq_interpreter/init.py
• jq_interpreter/cli.py
• jq_interpreter/errors.py
• jq_interpreter/evaluator.py
• jq_interpreter/parser.py
• tests/test_io_002_diagnostics.py

SUMMARY: Implemented debug, stderr, and halt_error with channel separation and exit semantics. All 177 tests pass; diagnostics conformance passes with 1 pass, 0 failures, 0 errors.

BLOCKERS:

• None