Linear history with bad commit third from beginning - model identifies third commit
Tests ability to identify the third commit as bad. Evaluates bisect with the bug early but not at the very start.
Baseline Repository
These commands set up the repo before the model sees the prompt. They define the starting file structure, staged changes, and Git history.
- 01
git init - 02
git config user.email 'test@test.com' - 03
git config user.name 'Test User' - 04
echo '#!/bin/bash' > test.sh - 05
echo '! grep -q "port: 8080" config/*.yaml 2>/dev/null' >> test.sh - 06
chmod +x test.sh - 07
git add test.sh - 08
git commit -m 'Initial commit' - 09
mkdir -p config && echo 'server: port: 3000' > config/default.yaml - 10
git add config/default.yaml - 11
git commit -m 'add default config' - 12
echo 'server: port: 8080' > config/default.yaml - 13
git add config/default.yaml - 14
git commit -m 'change port' - 15
echo 'server: port: 8080 feature: true' > config/default.yaml - 16
git add config/default.yaml - 17
git commit -m 'add feature flag' - 18
mkdir -p src && echo 'const PORT = 3000;' > src/index.js - 19
git add src/index.js - 20
git commit -m 'add port constant'
Prompt
You are debugging a git repository. The following commit history has one bad commit that broke the build. Identify the bad commit hash (first 7 characters) or commit subject line that introduced the bug. Use the git log and test output to determine which commit is bad.
Your answer should be the commit hash (e.g., 'abc1234') or the commit subject line.
Expected
change port
Fixture Metrics
Scoped model quality, cost, API time, and token usage for git_bisect/f006.
Loading...
Raw Attempt Evidence
Loading raw attempt evidence…
Model Outputs (760)
The first failing commit is **3e36461** ("change port") — the two commits before it pass, and every commit from this one onward fails.
1c7d261
JSON Schema
Structured Output
(raw) {"commit":"1c7d261"}
**Bad commit: `9c828eb` — "change port"**
The test results show the first failure occurs at `9c828eb` (change port). All commits before it pass (`61e684a`, `ae6e580`), and every commit after it continues to fail, indicating this is the commit that introduced the bug.
39391d4
JSON Schema
Structured Output
(raw) {"commit":"39391d4"}
**Bad commit: `3827fda` — "change port"**
Reasoning: Walking through the test results in chronological order, the build passes at `02d3535` (Initial commit) and `fb3b3cb` (add default config), then first fails at `3827fda` (change port). Every subsequent commit (`189fa06`, `25c0068`) also fails, which is consistent with them inheriting the breakage rather than introducing it. The transition from PASS → FAIL happens exactly at `3827fda`, so that is the commit that introduced the bug.
ae4c10f
JSON Schema
Structured Output
(raw) {"commit":"ae4c10f"}
The first failing commit is **0f0c71b** — "change port". Tests pass through `6d5ca73 add default config` and fail starting at `0f0c71b`, so that commit introduced the bug.
6e6d9a0
JSON Schema
Structured Output
(raw) {"commit": "6e6d9a0"}
The first failing commit is **76ab983** ("change port") — the two commits before it pass, and every commit from this one onward fails.
3cc15a3
JSON Schema
Structured Output
(raw) {"commit": "3cc15a3"}
**Bad commit: `f470ad5` — "change port"**
The bisection logic is straightforward:
- `b773631` (Initial commit): PASS ✅
- `4decdd6` (add default config): PASS ✅
- `f470ad5` (change port): **FAIL** ❌ ← first failing commit
- `08dd536` and `124a846` fail because they build on top of the broken commit
The transition from PASS to FAIL occurs at **f470ad5 "change port"**, making it the commit that introduced the bug.
e522775
JSON Schema
Structured Output
(raw) {"commit": "e522775"}
fdd31c7 — "change port" is the bad commit (first failing commit after passing 50e3c78).
92d9e55
JSON Schema
Structured Output
(raw) {"commit": "92d9e55"}
**Bad commit: `52207d6` — "change port"**
**Reasoning (bisect logic):**
Walking through the test results in chronological order:
| Commit | Subject | Result |
|--------|---------|--------|
| 29d9f37 | Initial commit | ✅ PASS |
| 1d19aca | add default config | ✅ PASS |
| **52207d6** | **change port** | ❌ **FAIL** ← first failure |
| 18f8243 | add feature flag | ❌ FAIL |
| fd6bfb9 | add port constant | ❌ FAIL |
The build passed through `1d19aca` and first failed at `52207d6`. All subsequent commits fail because they build on top of the broken state. Therefore, the commit that introduced the bug is **`52207d6` ("change port")** — the transition point from PASS to FAIL.
06b4c76
JSON Schema
Structured Output
(raw) {"commit": "06b4c76"}
The bad commit is **3c0ca42** ("change port").
Tests pass through 977447f, then first fail at 3c0ca42, so that commit introduced the bug.
03c2548
JSON Schema
Structured Output
(raw) {"commit": "03c2548"}
**Bad commit: `8743a9c` — "change port"**
Reasoning (bisect-style analysis):
- `1c6d822` (Initial commit): PASS ✅
- `a9527e6` (add default config): PASS ✅
- `8743a9c` (change port): **FAIL ❌ ← first failing commit**
- `b405076` (add feature flag): FAIL (inherited breakage)
- `7068f52` (add port constant): FAIL (inherited breakage)
The build transitions from PASS to FAIL at commit `8743a9c` ("change port"), making it the commit that introduced the bug. The subsequent failures are just downstream of that broken commit.
45a7cb5
JSON Schema
Structured Output
(raw) {"commit": "45a7cb5"}
# Analysis
Looking at the test results chronologically:
- **245e3ea** (Initial commit): PASS ✓
- **7811356** (add default config): PASS ✓
- **ec9b625** (change port): FAIL ✗ ← First failure
- **c712735** (add feature flag): FAIL ✗
- **fba7d17** (add port constant): FAIL ✗
The build passes through the first two commits, then fails starting with **ec9b625**. All subsequent commits also fail, but the root cause is introduced in the first failing commit.
**Answer: `ec9b625` (or "change port")**
3a3c3de
JSON Schema
Structured Output
(raw) {"commit": "3a3c3de"}
# Answer
**7ec2e18** (change port)
## Reasoning
Looking at the test results in chronological order:
- d831f40 (Initial commit): PASS ✓
- f8f7c44 (add default config): PASS ✓
- **7ec2e18 (change port): FAIL ✗** ← First failure
- 48dd8c0 (add feature flag): FAIL
- f1d6bf2 (add port constant): FAIL
The commit **7ec2e18** is the first commit where the build breaks. All commits before it pass, and all commits after it (which build on top of it) also fail. This indicates that the bug was introduced in the "change port" commit.
bedbef4
JSON Schema
Structured Output
(raw) {"commit": "bedbef4"}
# Analysis
Looking at the test results in chronological order:
1. **c678aa5** (Initial commit): ✅ PASS
2. **184d4da** (add default config): ✅ PASS
3. **37b28a0** (change port): ❌ FAIL ← Tests start failing here
4. **57b68b1** (add feature flag): ❌ FAIL
5. **d68e331** (add port constant): ❌ FAIL
The first commit where tests failed is **37b28a0**, immediately after the last passing commit.
**Answer: 37b28a0** (or "change port")
a80eb8a
JSON Schema
Structured Output
(raw) {"commit": "a80eb8a"}
The bad commit is **f2c7a45** (change port).
This is the first commit where the tests start failing. The commit "change port" introduced the bug that broke the build, and all subsequent commits also fail, indicating the bug was never fixed in later commits.
46e91de
JSON Schema
Structured Output
(raw) {"commit": "46e91de"}
# Analysis
Looking at the test results in chronological order:
- **931785b** (Initial commit): PASS ✓
- **4cb8ea7** (add default config): PASS ✓
- **8cd75c3** (change port): **FAIL** ✗ ← First failure
- **dc870e6** (add feature flag): FAIL ✗
- **b8e9d28** (add port constant): FAIL ✗
The build was passing up to commit `4cb8ea7`, and the first commit where tests start failing is `8cd75c3`. This is where the bug was introduced.
**Answer: `8cd75c3` or `change port`**
f9fcce5
JSON Schema
Structured Output
(raw) {"commit": "f9fcce5"}
The bad commit is **28e6084** (`change port`). It is the first commit where the test fails, meaning it introduced the bug.
36acbf4
JSON Schema
Structured Output
(raw) {"commit":"36acbf4"}
02d88b2
b96fc77
JSON Schema
Structured Output
(raw) {"commit":"b96fc77"}
**Bad commit: `1f72311` ("change port")**
**Reasoning:** The test results show that all commits up to and including `7b5cf24` (add default config) pass, but starting from `1f72311` (change port), all subsequent commits fail. This means `1f72311` is the first commit that introduced the failure, making it the bad commit. The later failures (`369d375`, `9e293fe`) are simply inheriting the bug introduced by `1f72311`.
b56aec0
JSON Schema
Structured Output
(raw) {"commit":"b56aec0"}
**d0425b7**
4cba54f
JSON Schema
Structured Output
(raw) {"commit":"4cba54f"}
The bad commit is `90e1a30` ("change port"). It is the first commit where the test fails after a series of passing commits.
36a9cf8
JSON Schema
Structured Output
(raw) {"commit":"36a9cf8"}
The bad commit is **3119f58** (`change port`). This is the first commit where the tests start failing, meaning it introduced the bug.
e7fa93d
JSON Schema
Structured Output
(raw) {"commit":"e7fa93d"}
94a2d9d
02a4112
JSON Schema
Structured Output
(raw) {"commit":"02a4112"}
c13f8fc
851ebde
JSON Schema
Structured Output
(raw) {"commit":"851ebde"}
Looking at the test results chronologically:
- `a5ea606` Initial commit: **PASS**
- `ecadd69` add default config: **PASS**
- `493936e` change port: **FAIL** ← First failing commit
- `f82070d` add feature flag: FAIL
- `db116a1` add port constant: FAIL
The transition from PASS to FAIL occurs at commit `493936e` "change port". All subsequent commits inherit the broken state.
**Bad commit: `493936e` (change port)**
92f75b1
JSON Schema
Structured Output
(raw) {"commit":"92f75b1"}
c14e225
58546e8
JSON Schema
Structured Output
(raw) {"commit":"58546e8"}
39ea660
955744e
JSON Schema
Structured Output
(raw) {"commit":"955744e"}
4b87f24
4c09f0a
JSON Schema
Structured Output
(raw) {"commit":"4c09f0a"}
The bad commit is **`54e2ca6`** ("change port").
The test results show a clear transition from PASS to FAIL:
- `d9ade0b` — PASS ✅
- `54e2ca6` — **FAIL** ❌ (first failing commit)
- All subsequent commits remain FAIL
Since `54e2ca6` is the first commit where the build broke (and everything before it passed), it introduced the bug.
a4c8fa9
JSON Schema
Structured Output
(raw) {"commit": "a4c8fa9"}
bc7d45b
fba3844
JSON Schema
Structured Output
(raw) {"commit":"fba3844"}
**Bad commit: `e99e829` ("change port")**
## Reasoning
Looking at the test results in chronological order (oldest to newest), I can find the transition point from passing to failing:
| Commit | Subject | Result |
|--------|---------|--------|
| 46f7337 | Initial commit | ✅ PASS |
| c1e3c4e | add default config | ✅ PASS |
| **e99e829** | **change port** | ❌ **FAIL** ← first failure |
| 417e7a1 | add feature flag | ❌ FAIL |
| 726269e | add port constant | ❌ FAIL |
The build was healthy through `c1e3c4e`, then broke starting at `e99e829`. Since every commit **before** `e99e829` passes and every commit **from** `e99e829` onward fails, this is the commit that introduced the bug.
The two later failures (`417e7a1` and `726269e`) are just inheriting the already-broken state — they aren't the root cause.
This is exactly the transition point `git bisect` would converge on:
```
git bisect start
git bisect bad 726269e # newest, known bad
git bisect good c1e3c4e # known good
# → bisect would identify e99e829 as the first bad commit
```
6212044
JSON Schema
Structured Output
(raw) {"commit": "6212044"}
**8cf4ce6** ("change port")
This is the bad commit. The build passes at `01283e1` and fails starting at `8cf4ce6`, with all subsequent commits inheriting the failure. Since `8cf4ce6` is the first commit to show FAIL (exit code 1), it introduced the bug.
51f6a3d
JSON Schema
Structured Output
(raw) {"commit": "51f6a3d"}
The bad commit is **`07945c2`** (`change port`).
This is the first commit where the tests transition from PASS to FAIL. The commit immediately before it (`237b285 add default config`) passes, and every commit from `07945c2` onward fails, indicating this commit introduced the bug that broke the build.
71c81de
JSON Schema
Structured Output
(raw) {"commit": "71c81de"}
**Bad commit: `63e0c22` ("change port")**
**Reasoning:**
Looking at the test results in chronological order (oldest → newest):
| Commit | Subject | Result |
|--------|---------|--------|
| d842fbb | Initial commit | ✅ PASS |
| 1f7e8c5 | add default config | ✅ PASS |
| **63e0c22** | **change port** | ❌ **FAIL** ← first failure |
| cf3fea9 | add feature flag | ❌ FAIL |
| 3191943 | add port constant | ❌ FAIL |
The build transitions from **PASS → FAIL** exactly at commit `63e0c22`. Every commit before it passes, and every commit from it onward fails. This is the classic bisection signature of a bug-introducing commit — `63e0c22` ("change port") is the culprit.
61e18d4
JSON Schema
Structured Output
(raw) {"commit": "61e18d4"}
The bad commit is **a95d50c** ("change port").
The tests pass through `eb60267` ("add default config"). They first fail at `a95d50c` and keep failing in every later commit. So "change port" is the first bad commit, the one that introduced the bug.
f05df03
JSON Schema
Structured Output
(raw) {"commit":"f05df03"}
The bad commit is **79f4379 ("change port")**.
The tests pass through a46ede6 ("add default config"). They first fail at 79f4379 and keep failing in every later commit. The first failing commit after a passing one is the commit that introduced the bug.
**Answer: 79f4379**
1a7f3c0
JSON Schema
Structured Output
(raw) {"commit":"1a7f3c0"}
The bad commit is **`dd62813`** ("change port").
Reading the test results from oldest to newest:
| Commit | Subject | Result |
|---|---|---|
| 1f839c6 | Initial commit | PASS |
| 3a34613 | add default config | PASS (last good) |
| **dd62813** | **change port** | **FAIL (first bad)** |
| c7ebe9c | add feature flag | FAIL |
| daec2cd | add port constant | FAIL |
The build passes through `3a34613` and fails from `dd62813` onward. Since each commit contains everything before it, `dd62813` is where the failure first appears. The later failures are most likely the same break carried forward. The subject "change port" fits this: a port change often breaks tests that expect the old value. The later commit "add port constant" did not fix it.
To confirm, you can run `git bisect` with the test as the check. It should report `dd62813` as the first bad commit:
```
git bisect start daec2cd 3a34613
git bisect run <test-command>
```
Alternatively, run `git show dd62813` to see exactly what changed.
44219e1
JSON Schema
Structured Output
(raw) {"commit":"44219e1"}
The bad commit is **b7ca080** ("change port").
The tests pass through f5a5d8a ("add default config") and first fail at b7ca080. Every later commit (1ed2311, 7361c77) also fails, which fits a regression that b7ca080 introduced and nothing afterward fixed.
94064fa
JSON Schema
Structured Output
(raw) {"commit":"94064fa"}
The bad commit is **8278d4e** ("change port").
The tests pass on `adacf6f` and `6dbdebb`. They first fail at `8278d4e` and keep failing in every later commit (`3b78a1f`, `fa85a9c`). So `8278d4e` is the first bad commit, which is the same result `git bisect` would give.
112efca
JSON Schema
Structured Output
(raw) {"commit":"112efca"}
**Bad commit: `47d7457` — "change port"**
Reasoning: The test suite passes at `19b2489` (Initial commit) and `eae7b91` (add default config), then fails starting at `47d7457` and stays failing for all subsequent commits (`e3aa626`, `d0b922f`). Since the transition from PASS → FAIL occurs exactly at `47d7457`, that commit is the one that introduced the breakage; the later failures are just inherited from it.
838f633
JSON Schema
Structured Output
(raw) {"commit":"838f633"}
96b3adf
674a4a1
JSON Schema
Structured Output
(raw) {"commit":"674a4a1"}
**Bad commit: `a9ee667` — "change port"**
Reasoning from the bisect data:
| Commit | Subject | Result |
|--------|---------|--------|
| e5aec90 | Initial commit | PASS |
| 023c03d | add default config | PASS |
| **a9ee667** | **change port** | **FAIL** ← first bad |
| e5789fe | add feature flag | FAIL |
| bb1ccb1 | add port constant | FAIL |
The build passes through `023c03d` and fails from `a9ee667` onward, with every subsequent commit inheriting the failure. That transition point makes `a9ee667` ("change port") the commit that introduced the bug — likely the port value it changed no longer matches what the tests/config expect (the later "add port constant" commit is just building on the already-broken state, not the cause).
To confirm:
```
git bisect start bb1ccb1 023c03d # reproduces the same conclusion
git show a9ee667 # inspect the port change
```
54b6f1e
JSON Schema
Structured Output
(raw) {"commit": "54b6f1e"}
**Bad commit: `c109393` — "change port"**
Reasoning from the bisect data:
| Commit | Subject | Result |
|--------|---------|--------|
| ed550d6 | Initial commit | PASS |
| 5110e21 | add default config | PASS |
| **c109393** | **change port** | **FAIL ← first failure** |
| 38f3583 | add feature flag | FAIL (inherited) |
| aeae88c | add port constant | FAIL (inherited) |
The build transitions from PASS to FAIL exactly at `c109393`. Everything before it is green, and every commit after it stays broken, which is the signature of a single bad commit whose breakage is inherited by its descendants. The later commits (`38f3583`, `aeae88c`) fail only because they build on top of `c109393`, not because of their own changes.
6a72f31
JSON Schema
Structured Output
(raw) {"commit":"6a72f31"}
**Bad commit: `5887a96` — "change port"**
**Reasoning:**
The test results show a clean transition from passing to failing:
| Commit | Subject | Result |
|--------|---------|--------|
| d637441 | Initial commit | PASS |
| 7d0eafb | add default config | PASS |
| **5887a96** | **change port** | **FAIL** ← first failure |
| 8b02d66 | add feature flag | FAIL |
| c674fa3 | add port constant | FAIL |
Since `7d0eafb` was the last good commit and `5887a96` is the first commit where the build broke, `5887a96` ("change port") introduced the bug. The subsequent failures in `8b02d66` and `c674fa3` are simply inherited from the still-broken state — they don't indicate independent defects.
Likely cause: the port value change conflicts with what the tests/config expect (e.g., a hardcoded port in tests, or a value out of valid range / already in use). A good next step would be `git show 5887a96` to inspect the diff, and confirm with `git bisect` if you want automated verification.
03244b4
JSON Schema
Structured Output
(raw) {"commit": "03244b4"}
The bad commit is **71a906d** ("change port"), as it's the first commit where the tests began failing.
eae38f0
JSON Schema
Structured Output
(raw) {"commit":"eae38f0"}
95608af
7d69b78
JSON Schema
Structured Output
(raw) {"commit":"7d69b78"}
## Analysis
Looking at the test results ordered from oldest to newest:
| Commit | Subject | Result |
|--------|---------|--------|
| `4f6a54e` | Initial commit | ✅ PASS |
| `d7df229` | add default config | ✅ PASS |
| `53ebe29` | change port | ❌ FAIL |
| `5b714a2` | add feature flag | ❌ FAIL |
| `ef46624` | add port constant | ❌ FAIL |
The build passes through `d7df229` and first breaks at `53ebe29`. All subsequent commits also fail, which is consistent with a bug being introduced and never fixed.
## Answer
**`53ebe29`**
The bad commit is `53ebe29` — **"change port"** — which is the first commit where the build transitions from PASS to FAIL.
c141677
JSON Schema
Structured Output
(raw) {"commit":"c141677"}
The bad commit is **83bce98**
50d049f
JSON Schema
Structured Output
(raw) {"commit":"50d049f"}
The bad commit is **0f6ad73**
4213655
JSON Schema
Structured Output
(raw) {"commit":"4213655"}
The bad commit is **f8984d1** ("change port"), as it is the first commit where the tests began failing.
6cd5262
JSON Schema
Structured Output
(raw) {"commit":"6cd5262"}
**4964d3e** — "change port"
This is the first commit where the test transitioned from PASS to FAIL, and all subsequent commits remain FAIL, indicating this commit introduced the breaking change (and later commits simply inherited the broken state).
da26a40
JSON Schema
Structured Output
(raw) {"commit":"da26a40"}
6ab21fd change port
1e06d02
JSON Schema
Structured Output
(raw) {"commit":"1e06d02"}
c1e10b3
6fe2893
JSON Schema
Structured Output
(raw) {"commit":"6fe2893"}
c247c18 change port
58605ee
JSON Schema
Structured Output
(raw) {"commit":"58605ee"}
**fa13c82** (commit subject: "change port")
This is the first commit where the test suite transitions from PASS to FAIL, and all subsequent commits remain in a FAIL state — consistent with a bug introduced at this point that was never fixed. Using a bisection approach: since `67cc397` passes and `fa13c82` fails, the bug was introduced in `fa13c82`.
597ad8d
JSON Schema
Structured Output
(raw) {"commit":"597ad8d"}
88e01a5
The first commit that caused a test failure is `ec54197` with the subject line "change port". This is the bad commit that introduced the bug.
The first commit that causes the test to fail is `4206cd3` ("change port"). Since the build was passing in previous commits and all subsequent commits also fail, this is the bad commit that introduced the bug.
Answer: 4206cd3
The bad commit is `a8c0038` with the subject line "change port", as it is the first commit where the tests fail (exit code 1), indicating the introduction of the bug.
24c9788**Reasoning:**
1. **Test Results Order:** The test results are listed from oldest commit to newest. This means the first test result (e0808de) is the oldest commit, and the last test result (18b1429) is the newest.
2. **Failure Pattern:** The test results show that commits `e0808de` and `8035a76` passed (exit code 0). All commits after that (`24c9788`, `3566a0b`, `18b1429`) failed (exit code 1).
3. **First Failure:** The first commit to fail is `24c9788` ("change port"). Since the build was working before this commit (as `e0808de` and `8035a76` passed), this commit is the one that introduced the bug.
4. **Subsequent Failures:** While commits `3566a0b` ("add feature flag") and `18b1429` ("add port constant") also failed, the bug was already introduced in `24c9788`. Their failures are a consequence of the existing bug, not the initial cause.
Therefore, the bad commit that broke the build is `24c9788`.
c61b131
JSON Schema
Structured Output
(raw) {
"commit": "c61b131"
}
3c2127c
6f6666d
JSON Schema
Structured Output
(raw) {
"commit": "6f6666d"
}
033e4de
**Reasoning:**
1. **Test Results Order:** The test results are listed from oldest to newest commit.
2. **Pass/Fail Pattern:** The first two commits (9b35f91 and e3ca556) passed. The third commit (033e4de) failed. The subsequent commits (3ec7f16 and ae56a64) also failed.
3. **Root Cause:** The failure starts at commit `033e4de`. This is the first commit where the test fails. While commits `3ec7f16` and `ae56a64` also fail, they are likely failing *because* the code was already broken by `033e4de`. The bug was introduced in `033e4de`.
4. **Bad Commit:** Therefore, the commit that introduced the bug is `033e4de`.
4ac9e9f
JSON Schema
Structured Output
(raw) {
"commit": "4ac9e9f"
}
2b86c68
03d8836
JSON Schema
Structured Output
(raw) {
"commit": "03d8836"
}
4146448
9be8203
JSON Schema
Structured Output
(raw) { "commit": "9be8203" }
f4795f4
931fb35
JSON Schema
Structured Output
(raw) {"commit":"931fb35"}
9451f6e
f5473ab
JSON Schema
Structured Output
(raw) {"commit": "f5473ab"}
10280fa
eb86408
JSON Schema
Structured Output
(raw) { "commit": "eb86408" }
7890a7b
88882e2
JSON Schema
Structured Output
(raw) {"commit":"88882e2"}
d3cef09
a707a10
JSON Schema
Structured Output
(raw) {
"commit": "a707a10"
}
1e6ef2f
4b5530e
JSON Schema
Structured Output
(raw) {"commit":"4b5530e"}
298f09c
6146405
35c0b42
JSON Schema
Structured Output
(raw) {"commit": "35c0b42"}
Based on the git log and test results, the first commit that fails is `2ccac79` "change port". Since commits before it pass (0444e51 and 2b83c53), and this commit introduces the failure, it is the bad commit.
**2ccac79**
7387541
JSON Schema
Structured Output
(raw) {"commit":"7387541"}
de2d08a
2020dd9
JSON Schema
Structured Output
(raw) { "commit": "2020dd9" }
a25153f
39452bc
JSON Schema
Structured Output
(raw) {"commit": "39452bc"}
d7a0d89
cb1e53b
JSON Schema
Structured Output
(raw) {"commit": "cb1e53b"}
b85dd0e
1441cc6
JSON Schema
Structured Output
(raw) {"commit": "1441cc6"}
Based on the test results, the bad commit is:
**a945a49**
This is the first commit where the tests failed, indicating it introduced the bug. All subsequent commits also fail because the bug persisted through those changes.
dacca9d
JSON Schema
Structured Output
(raw) {"commit": "dacca9d"}
9093a34
5452f3e
JSON Schema
Structured Output
(raw) {
"commit": "5452f3e"
}
5785473
8992381
JSON Schema
Structured Output
(raw) {"commit": "8992381" }
161840e
8a93032
JSON Schema
Structured Output
(raw) { "commit": "8a93032" }
34762b1 (change port)
2c5aaac
JSON Schema
Structured Output
(raw) { "commit": "2c5aaac" }
0018e46
187a99d
JSON Schema
Structured Output
(raw) { "commit": "187a99d" }
The first failing commit is **1a43f54** ("change port").
Since 41302d0 passed and 1a43f54 failed, the bad commit is the one that introduced the bug.
**Answer:** `1a43f54`
800fdbb
JSON Schema
Structured Output
(raw) { "commit": "800fdbb" }
e0d65c5
b5d1ef4
JSON Schema
Structured Output
(raw) { "commit": "b5d1ef4" }
The bad commit is 6e9cbc5 or change port.
1b2bb37
JSON Schema
Structured Output
(raw) {"commit": "1b2bb37"}
The commit that introduced the bug is 55b1bf7.
89f5bd3
JSON Schema
Structured Output
(raw) {"commit":"89f5bd3"}
The bad commit is 2a3da60.
04f5208
JSON Schema
Structured Output
(raw) {"commit":"04f5208"}
3eddd05
5a8ff77
JSON Schema
Structured Output
(raw) {"commit":"5a8ff77"}
The bad commit is **2a8b793** (subject: **change port**).
**Reasoning:**
The test results show that `b97a540` was the last commit to pass (PASS). The very next commit, `2a8b793`, was the first to fail (FAIL), indicating that the bug was introduced in that specific commit.
2e1473e
JSON Schema
Structured Output
(raw) {"commit": "2e1473e"}
The bad commit is **fa3f876** (subject line: "change port").
**Reasoning:**
Looking at the test results chronologically:
* `ef1ea4e` (the commit before `fa3f876`) passed.
* `fa3f876` failed.
Since the build was passing before this commit and failed started at this commit, `fa3f876` is the commit that introduced the bug.
dff8f40
JSON Schema
Structured Output
(raw) {"commit": "dff8f40"}
The bad commit is **35b3c78** (change port).
96214aa
JSON Schema
Structured Output
(raw) {
"commit": "96214aa"
}
The bad commit is **75c78dc** (subject: "change port").
**Reasoning:**
The test results show that commit `832f0c6` passed, but the very next commit, `75c78dc`, failed. This indicates that the change introduced in `75c78dc` caused the build failure.
5c42104
JSON Schema
Structured Output
(raw) {"commit": "5c42104"}
To find the commit that introduced the bug, we can look at the test results in sequential order, from the oldest commit to the newest. The first commit to fail the test is the one that broke the build.
Looking at your test results:
- 2c7b328 Initial commit: PASS
- 2d8ebce add default config: PASS
- **ad98c36 change port: FAIL**
- e05c3b9 add feature flag: FAIL
- eab2aa7 add port constant: FAIL
The build was passing until the "change port" commit. Therefore, the commit that introduced the bug is:
**ad98c36** (or "change port")
dfb9479
JSON Schema
Structured Output
(raw) {"commit": "dfb9479"}
The bad commit that introduced the bug is **da5d081** (or "change port").
431fb64
JSON Schema
Structured Output
(raw) {
"commit": "431fb64"
}
The bad commit that introduced the bug is **43b0bb4** ("change port").
5ed6e66
JSON Schema
Structured Output
(raw) {
"commit": "5ed6e66"
}
The bad commit that introduced the bug is **459cde1** (or "change port").
Looking at the chronological test results (oldest first), the build passes for the first two commits (`2c77517` and `b651705`) but fails immediately when `459cde1 change port` is introduced. All subsequent commits also fail over this broken state.
ec1828c
JSON Schema
Structured Output
(raw) {"commit":"ec1828c"}
df3a88e
ed4bc60
JSON Schema
Structured Output
(raw) {"commit": "ed4bc60"}
c674561
a3bd4d5
JSON Schema
Structured Output
(raw) {
"commit": "a3bd4d5"
}
be03a88
81acfa7
JSON Schema
Structured Output
(raw) {"commit":"81acfa7"}
6ab76e0
f64085d
JSON Schema
Structured Output
(raw) {"commit": "f64085d"}
c97ebf9
619898c
JSON Schema
Structured Output
(raw) {"commit":"619898c"}
c346479
50d76ed
JSON Schema
Structured Output
(raw) {"commit":"50d76ed"}
9acbf2b
0ce2221
JSON Schema
Structured Output
(raw) {"commit": "0ce2221"}
af899d4
bb5e826
JSON Schema
Structured Output
(raw) {"commit":"bb5e826"}
65949ee
a7d237e
JSON Schema
Structured Output
(raw) {"commit": "a7d237e"}
The bad commit that introduced the bug is **`8a047e0`** (change port).
bcae38a
JSON Schema
Structured Output
(raw) {"commit":"bcae38a"}
The bad commit that introduced the bug is **91800c7** (change port).
9a03b68
JSON Schema
Structured Output
(raw) {"commit":"9a03b68"}
**87f000e** (or "change port") is the bad commit that introduced the bug.
04c91fe
JSON Schema
Structured Output
(raw) {"commit":"04c91fe"}
The commit that introduced the bug is **d1010e1** (`change port`).
18d2b2d
JSON Schema
Structured Output
(raw) {"commit":"18d2b2d"}
The commit that introduced the bug is **384a0d8** (or "change port").
258038b
JSON Schema
Structured Output
(raw) {"commit":"258038b"}
38a6ee0
df235cf
JSON Schema
Structured Output
(raw) {"commit":"df235cf"}
1ce033b
979a944
JSON Schema
Structured Output
(raw) {"commit":"979a944"}
a2f803f
12b73ac
JSON Schema
Structured Output
(raw) {"commit":"12b73ac"}
c88792f
3344f7f
JSON Schema
Structured Output
(raw) {"commit":"3344f7f"}
08f7cc6
0ca9ecc
JSON Schema
Structured Output
(raw) {
"commit": "0ca9ecc"
}
022dee0
9ada336
JSON Schema
Structured Output
(raw) {
"commit": "9ada336"
}
61c74f2
17dd6ef
JSON Schema
Structured Output
(raw) {"commit": "17dd6ef"}
58e75b1
604b7ba
JSON Schema
Structured Output
(raw) {
"commit": "604b7ba"
}
5802375
afe4915
JSON Schema
Structured Output
(raw) {
"commit": "afe4915"
}
f2a8a94
87616d1
JSON Schema
Structured Output
(raw) {
"commit": "87616d1"
}
a8b037c
e3b1c58
JSON Schema
Structured Output
(raw) {"commit": "e3b1c58"}
55e9dcf
3a85262
JSON Schema
Structured Output
(raw) {
"commit": "3a85262"
}
ffd8899
89cb450
JSON Schema
Structured Output
(raw) {"commit": "89cb450"}
c2db501
bc1cafb
JSON Schema
Structured Output
(raw) {"commit": "bc1cafb"}
48b400b
cbbf970
JSON Schema
Structured Output
(raw) {"commit": "cbbf970"}
The failing test results indicate that the build started to fail with commit **fd549ee** ("change port"). While subsequent commits (8a9ca30 and eb4f8b8) also cause failures, the first occurrence of a failure marks the introduction of the bug. Therefore, the bad commit hash (first 7 characters) is:
**fd549ee**
b65edc6
JSON Schema
Structured Output
(raw) {"commit": "b65edc6"}
cb2b33a
03dfb80 change port: FAIL (exit code 1)
16035d1 add feature flag: FAIL (exit code 1)
df834ae add port constant: FAIL (exit code 1)
7368146 add default config: PASS (exit code 0)
7e7b241 Initial commit: PASS (exit code 0)
JSON Schema
Structured Output
(raw) {
"commit": "03dfb80 change port: FAIL (exit code 1)\n16035d1 add feature flag: FAIL (exit code 1)\ndf834ae add port constant: FAIL (exit code 1)\n7368146 add default config: PASS (exit code 0)\n7e7b241 Initial commit: PASS (exit code 0)\n"
}
b1a755b
7e64426
JSON Schema
Structured Output
(raw) {
"commit": "7e64426"
}
ae879dc
83a686a
4ef8e7c
JSON Schema
Structured Output
(raw) {"commit":"4ef8e7c"}
The bad commit hash (first 7 characters) is **d8d59e7**.
**Reasoning:**
- The test results are listed from oldest to newest commit: `f791d08` → `732639f` → `d8d59e7` → `106f403` → `514f12f`.
- `f791d08` and `732639f` pass the tests.
- `d8d59e7` (commit "change port") is the first commit in the test results that fails. Therefore, it is the commit that introduced the bug (since all earlier commits passed).
- Subsequent commits (`106f403` and `514f12f`) also fail, but they are built on top of the already-broken `d8d59e7`, so they do not introduce the bug—they inherit it.
Thus, the commit that first broke the build (i.e., the bad commit) is `d8d59e7`.
The commit subject line for `d8d59e7` is "change port", but the instruction specifies to return either the commit hash (first 7 chars) or the commit subject line. The safest and most precise answer per the format (commit hash first 7 chars) is **d8d59e7**.
> Note: The commit history list is newest first (so `514f12f` is newest), but the test results are oldest first (so `f791d08` is first test). The failure appears at `d8d59e7` in test order, confirming it as the first failing commit.
**Answer:** `d8d59e7`
d8d59e7
0680cca
JSON Schema
Structured Output
(raw) {
"commit": "0680cca"
}
e8ec6fd
b26b185 change port: FAIL (exit code 1)
JSON Schema
Structured Output
(raw) {
"commit": "b26b185 change port: FAIL (exit code 1)"
}
3f5f4ba
d75fcad
JSON Schema
Structured Output
(raw)
{"commit": "d75fcad"}
4c82e85
1dd720d
JSON Schema
Structured Output
(raw) {
"commit": "1dd720d"
}
a28cdc3
43dccfb
JSON Schema
Structured Output
(raw) {"commit": "43dccfb"}
e6fd3e8
7e429c3
JSON Schema
Structured Output
(raw) {"commit": "7e429c3"}
c0c52e4
eac45c0 change port
JSON Schema
Structured Output
(raw) {
"commit": "eac45c0 change port"
}
6ab76ab
6258cc5
JSON Schema
Structured Output
(raw) {"commit": "6258cc5"}
The bad commit is **0548f17** ("change port").
The test results show that the first failure occurs at commit `0548f17` ("change port"). All earlier commits pass, and all later commits also fail — indicating the bug was introduced by this commit.
b3c7e27 (b3c7e27 change port)
JSON Schema
Structured Output
(raw) {"commit":"b3c7e27 (b3c7e27 change port)"}
The first failing commit after the initial pass is **35bde5a**, as it is the earliest commit that produced a failure.
Answer: 35bde5a
The first `FAIL` after the last `PASS` is the culprit:
* Last GOOD: `14abe2d add default config`
* First BAD: `baeb241 change port`
The bad commit is:
> **baeb241 - `change port`**
9b6d320 change port
JSON Schema
Structured Output
(raw) {"commit": "9b6d320 change port"}
The first `FAIL` in the history is the culprit.
* `40a9f4b` PASS
* `75a1d41` PASS
* **`20b4076` FAIL** <- first failure
The bad commit is:
> **Hash: `20b4076`**
> **Subject: `change port`**
80b495e@change port
JSON Schema
Structured Output
(raw) {"commit": "80b495e@change port"}
The first `FAIL` in the history is the bad commit.
* `751d3ad` PASS
* `e509f16` PASS
* **`c23c0f8` FAIL** <- first bad
* `416ddd4` FAIL
* `38bbb50` FAIL
Bad commit is:
> **Hash: `c23c0f8`**
> **Subject: `change port`**
96f48d8
```
The first `FAIL` is `96f48d8`.
Transition is:
* `e59b26b add default config` -> PASS
* `96f48d8 change port` -> FAIL
So `96f48d8` / `change port` introduced the bug.
Bisect:
```
git bisect start
git bisect bad fb1c1ae
git bisect good 470ba82
# tests 96f48d8 -> FAIL -> bad
# then tests e59b26b -> PASS
# result: 96f48d8 is first bad
```
JSON Schema
Structured Output
(raw) {
"commit": "96f48d8\n```\nThe first `FAIL` is `96f48d8`.\n\nTransition is:\n\n* `e59b26b add default config` -> PASS\n* `96f48d8 change port` -> FAIL\n\nSo `96f48d8` / `change port` introduced the bug.\n\nBisect:\n```\ngit bisect start\ngit bisect bad fb1c1ae\ngit bisect good 470ba82\n# tests 96f48d8 -> FAIL -> bad\n# then tests e59b26b -> PASS\n# result: 96f48d8 is first bad\n```"}
The first `FAIL` after a `PASS` chain is the commit that introduced the bug.
* `04b061c` - PASS
* `9f73c2e` - PASS
* **`faf8bec` - FAIL** <- first bad
* `060eb54` - FAIL
* `d2025f2` - FAIL
Bad commit:
> **Hash: `faf8bec`**
> **Subject: `change port`**
a0e28ea change port
JSON Schema
Structured Output
(raw) {
"commit": "a0e28ea change port"
}
The first `FAIL` is the commit that broke the build.
* `7bec238 Initial commit` -> PASS
* `4e2dd94 add default config` -> PASS
* **`992cd79 change port` -> FAIL** <- **first bad**
The later commits `56a6b7c` and `a7d252a` also FAIL but only because they contain `992cd79`.
> **Bad commit: `992cd79`**
> **Subject: `change port`**
Found with `git bisect`:
```
git bisect start
git bisect bad a7d252a
git bisect good 7bec238
# bisect will land on 992cd79 as first bad
```
f40ad5d
JSON Schema
Structured Output
(raw) {
"commit": "f40ad5d"
}
d08c268
30c90f7
JSON Schema
Structured Output
(raw) {"commit": "30c90f7"}
f68aed7
57bc530
JSON Schema
Structured Output
(raw) {"commit": "57bc530"}
The bad commit is **706d10a** — `change port`
8df51f9
JSON Schema
Structured Output
(raw) {"commit": "8df51f9"}
234340c
4406ac4
JSON Schema
Structured Output
(raw) {"commit":"4406ac4"}
a823384
1f5264f
JSON Schema
Structured Output
(raw) { "commit": "1f5264f" }
da53b2c
b5c08c4
JSON Schema
Structured Output
(raw) {
"commit": "b5c08c4"
}
f5fcc1c (commit “change port”)
907ecbc
JSON Schema
Structured Output
(raw) {
"commit": "907ecbc"
}
9ea488f
ff960ab
JSON Schema
Structured Output
(raw) {
"commit": "ff960ab"
}
911855e
57cd797
JSON Schema
Structured Output
(raw) {
"commit": "57cd797"
}
05c4487
9bdf49e
JSON Schema
Structured Output
(raw) {"commit":"9bdf49e"}
4fa8226 (the “change port” commit) is the first one that causes the test to fail.
9e0f5d5
JSON Schema
Structured Output
(raw) {"commit":"9e0f5d5"}
14d84b7
The bad commit is `2aca6bd` (change port).
26e2a6d
JSON Schema
Structured Output
(raw) {"commit": "26e2a6d"}
cce0ac2
5ad5efe
JSON Schema
Structured Output
(raw) {"commit": "5ad5efe"}
a41bf2e
51099ec
JSON Schema
Structured Output
(raw) { "commit": "51099ec" }
6fa3493
763517f
JSON Schema
Structured Output
(raw) { "commit": "763517f" }
Based on the test results, the first commit that introduced the bug is `568c638 change port`, as it's the first commit in the history (when read from oldest to newest) that shows a FAIL result. All subsequent commits also fail, which suggests the bug was introduced in this commit and not fixed in later ones.
The bad commit is: `568c638` (or "change port")
64587a0
JSON Schema
Structured Output
(raw) {"commit": "64587a0"}
The test results show that the build was passing up to commit `68c4469` (add default config) and first failed at commit `d86431b` (change port). All subsequent commits also failed, confirming that `d86431b` is the first bad commit.
**d86431b**
08a7efb
JSON Schema
Structured Output
(raw) {"commit": "08a7efb"}
b224b30
c79d362
JSON Schema
Structured Output
(raw) {"commit": "c79d362"}
The first failing commit is `c74dee0 change port`, and all subsequent commits also fail. Since the two commits before it (`7c42a6e` and `06d7f35`) pass, **`c74dee0` is the bad commit that broke the build**.
c74dee0
bb44116
JSON Schema
Structured Output
(raw) {"commit": "bb44116"}
The bad commit is `866d255` (commit subject: "change port").
This is because:
1. The test passes for commits 92b49cc and ec4870e
2. The test first fails at commit 866d255
3. All subsequent commits (459760d and f0bd616) also fail, indicating the bug was introduced in 866d255 and never fixed
Therefore, the bad commit is `866d255`.
133805c
JSON Schema
Structured Output
(raw) {"commit": "133805c"}
The test passes for the first two commits (Initial commit and add default config) but starts failing at **86a96d1 change port** and continues to fail for all subsequent commits. This indicates the bug was introduced in that commit.
86a96d1
af9feed
JSON Schema
Structured Output
(raw) {"commit": "af9feed"}
3e12858
ccdaa6c
JSON Schema
Structured Output
(raw) { "commit": "ccdaa6c" }
bdd7864
68fe6b8
JSON Schema
Structured Output
(raw)
{
"commit": "68fe6b8"
}
180012a
e92410b
JSON Schema
Structured Output
(raw)
{
"commit": "e92410b"
}
7c5e85a
6f1bd4c
JSON Schema
Structured Output
(raw)
{
"commit": "6f1bd4c"
}
587431d (change port)
b2fabe0 change port
JSON Schema
Structured Output
(raw) { "commit": "b2fabe0 change port" }
1db698f
34293f4 (change port)
aab009a change port
JSON Schema
Structured Output
(raw) {
"commit": "aab009a change port"
}
**64a412c** — “change port”
This is the first commit in the test results that fails, so it introduced the bug.
6deddd5
JSON Schema
Structured Output
(raw) { "commit": "6deddd5" }
**Bad commit: `7d91952` — "change port"**
**Reasoning:**
- `8418c12` (Initial commit) → PASS
- `fec8d96` (add default config) → PASS
- `7d91952` (change port) → **FAIL** ← first failure appears here
- `aa9a67b` (add feature flag) → FAIL
- `2e250f3` (add port constant) → FAIL
Since the build passed at `fec8d96` and first failed at `7d91952`, the commit `7d91952` ("change port") is the one that introduced the bug. All subsequent commits fail because they build on top of it.
3fd5f9d — “change port”
**Bad commit: `3e5ff9c` — "change port"**
**Reasoning:** The build passed at `0be0239` (Initial commit) and `9059f8d` (add default config), but began failing at `3e5ff9c` (change port). Every commit after it also fails, which is consistent with the bug being introduced at `3e5ff9c` and persisting through all subsequent commits. Since `9059f8d` is the last passing commit and `3e5ff9c` is the first failing one, `3e5ff9c` is the commit that introduced the bug.
47b7e6a — “change port”
**Bad commit: `6c2bdb2` — "change port"**
**Reasoning:** Walking the history from oldest to newest:
- `ac52625` (Initial commit) — PASS
- `cea3e3f` (add default config) — PASS
- `6c2bdb2` (change port) — **FAIL** ← first failure
- `0d38f59` and `8b2dcd5` — FAIL (they inherit the breakage)
Since `cea3e3f` is the last passing commit and `6c2bdb2` is the first failing one, the bug was introduced in `6c2bdb2` ("change port"). The subsequent commits remain broken because they build on top of this bad change — notably, the later commit "add port constant" (`8b2dcd5`) didn't fix the port change that broke things.
**Bad commit: `9785417` — "change port"**
The tests pass on the first two commits (`099c6ca` and `f0ac59d`), but `9785417` is the first commit where the test suite fails (exit code 1). Since every subsequent commit also fails, `9785417` is the commit that introduced the bug. In a `git bisect` workflow, this is exactly what bisection would converge on: the transition point from PASS to FAIL.
**Bad commit: `f3f268d` ("change port")**
**Reasoning:** This follows the standard git bisect logic — the bad commit is the *first* commit where the test transitions from PASS to FAIL:
| Commit | Result |
|--------|--------|
| `5135b3c` Initial commit | ✅ PASS |
| `3f0417f` add default config | ✅ PASS |
| **`f3f268d` change port** | ❌ **FAIL** ← first failure |
| `02a8090` add feature flag | ❌ FAIL |
| `4a477bd` add port constant | ❌ FAIL |
Since `3f0417f` passes and `f3f268d` is the first commit to fail — with all subsequent commits also failing — the bug was introduced in **`f3f268d` ("change port")**. The later commits didn't break the build; they just inherited the breakage.
**Bad commit: `c80ca9b` ("change port")**
**Reasoning:**
- `7872e04` (Initial commit) → PASS
- `8b1fa3e` (add default config) → PASS
- `c80ca9b` (change port) → **FAIL** ← first failure
- `52f414c` (add feature flag) → FAIL
- `5866934` (add port constant) → FAIL
The tests pass through `8b1fa3e` and first fail at `c80ca9b`. Since the bug appears in every commit from `c80ca9b` onward and in none before it, `c80ca9b` ("change port") is the commit that introduced the bug.
7580a34 — “change port”
**Bad commit: `67d36d9` — "change port"**
**Reasoning:** Walking the history from oldest to newest:
- `292f6dc` (Initial commit): PASS
- `89c2ea8` (add default config): PASS
- `67d36d9` (change port): **FAIL** ← first failure
- `007502d` (add feature flag): FAIL
- `a3db15d` (add port constant): FAIL
Since `89c2ea8` is the last passing commit and `67d36d9` is the first failing commit — with every subsequent commit also failing — the bug was introduced in `67d36d9` ("change port"). This matches a classic git bisect result: the transition point from PASS to FAIL identifies the culprit.
2ba2f4d
e2ad374
JSON Schema
Structured Output
(raw) { "commit": "e2ad374" }
1824dc4
85a88cc
JSON Schema
Structured Output
(raw) {"commit":"85a88cc"}
**f9f8ffc** (the “change port” commit)
15f0b0d
JSON Schema
Structured Output
(raw) {
"commit": "15f0b0d"
}
2b5bc53 change port
af85a59
JSON Schema
Structured Output
(raw) { "commit": "af85a59" }
03097d6 (change port)
dc1c0ee
JSON Schema
Structured Output
(raw) {
"commit": "dc1c0ee"
}
3036ff3
0f2dc4a
JSON Schema
Structured Output
(raw) { "commit": "0f2dc4a" }
2c60686 change port
c812775
JSON Schema
Structured Output
(raw) {
"commit": "c812775"
}
744d8d3
e1c5c3d
JSON Schema
Structured Output
(raw) {
"commit": "e1c5c3d"
}
b5dceab change port
1575838
JSON Schema
Structured Output
(raw) {
"commit": "1575838"
}
1952ef8
b4e3665
JSON Schema
Structured Output
(raw) {
"commit": "b4e3665"
}
875b92d
33743bb
JSON Schema
Structured Output
(raw) {"commit":"33743bb"}
9c0c2ea
f1d8845
JSON Schema
Structured Output
(raw) {"commit":"f1d8845"}
7b9ca16
16c1ca8
JSON Schema
Structured Output
(raw) {"commit":"16c1ca8"}
190d4ae
ed18d3a
JSON Schema
Structured Output
(raw) {"commit":"ed18d3a"}
7674313
e029420
JSON Schema
Structured Output
(raw) {"commit":"e029420"}
85c55d1
7c3ffd6
JSON Schema
Structured Output
(raw) {"commit":"7c3ffd6"}
60fd69e
c1afac4
JSON Schema
Structured Output
(raw) {"commit":"c1afac4"}
c8678ca
460b966
JSON Schema
Structured Output
(raw) {"commit":"460b966"}
5c1fdd1
4777217
JSON Schema
Structured Output
(raw) {"commit":"4777217"}
0f22aa8
2f43ad5
JSON Schema
Structured Output
(raw) {"commit":"2f43ad5"}
f4a4a45
f47e91f
JSON Schema
Structured Output
(raw) {"commit":"f47e91f"}
3379971
90e4aad
JSON Schema
Structured Output
(raw) {"commit":"90e4aad"}
72af161
761d232
JSON Schema
Structured Output
(raw) {"commit":"761d232"}
5865379
bb05bef
JSON Schema
Structured Output
(raw) {"commit":"bb05bef"}
101c6bb
c9e645e
JSON Schema
Structured Output
(raw) {"commit":"c9e645e"}
3700566
181ae98
JSON Schema
Structured Output
(raw) {"commit":"181ae98"}
23f7a58
46345ef
JSON Schema
Structured Output
(raw) {"commit":"46345ef"}
d365ddd
eb5d8e6
JSON Schema
Structured Output
(raw) {"commit":"eb5d8e6"}
e90d3ea
f10f2e8
JSON Schema
Structured Output
(raw) {"commit":"f10f2e8"}
1ceb7cf
77f1093
JSON Schema
Structured Output
(raw) {"commit":"77f1093"}
1815531
57fed0f
JSON Schema
Structured Output
(raw) {"commit":"57fed0f"}
89a0d99
bec0fbd
JSON Schema
Structured Output
(raw) {"commit":"bec0fbd"}
c916a06
9bf31d2
JSON Schema
Structured Output
(raw) {"commit":"9bf31d2"}
7982808
f195199
JSON Schema
Structured Output
(raw) {"commit":"f195199"}
94fccde
68c776b
JSON Schema
Structured Output
(raw) {"commit":"68c776b"}
3d56cbc
f785d71
JSON Schema
Structured Output
(raw) {"commit":"f785d71"}
b38e3fc
785c548
JSON Schema
Structured Output
(raw) {"commit":"785c548"}
161e44d
bcbe8c7
JSON Schema
Structured Output
(raw) {"commit":"bcbe8c7"}
5ee0446
968e222
JSON Schema
Structured Output
(raw) {"commit":"968e222"}
17fc202
814fff4
JSON Schema
Structured Output
(raw) {"commit":"814fff4"}
3f2c00d
5e0e301
JSON Schema
Structured Output
(raw) {"commit":"5e0e301"}
3db5fea
06726d7
JSON Schema
Structured Output
(raw) {"commit":"06726d7"}
5c7cf9e
4ebed82
JSON Schema
Structured Output
(raw) {"commit":"4ebed82"}
30a4025
b3f8f3e
JSON Schema
Structured Output
(raw) {"commit":"b3f8f3e"}
0e0861f
1d9349f
JSON Schema
Structured Output
(raw) {"commit":"1d9349f"}
864ca6e
8e5657c
JSON Schema
Structured Output
(raw) {"commit":"8e5657c"}
c5a1279
b160c9b
JSON Schema
Structured Output
(raw) {"commit":"b160c9b"}
ae2a883
1c4aa1f
JSON Schema
Structured Output
(raw) {"commit":"1c4aa1f"}
64db1e0
f5eeb82
JSON Schema
Structured Output
(raw) {"commit":"f5eeb82"}
539dec6
dd68197
JSON Schema
Structured Output
(raw) {"commit":"dd68197"}
0e7c788
3cc7504
JSON Schema
Structured Output
(raw) {"commit":"3cc7504"}
fc9a494
9fc0efc
JSON Schema
Structured Output
(raw) {"commit":"9fc0efc"}
4cae136
eb511ae
JSON Schema
Structured Output
(raw) {"commit":"eb511ae"}
f4febfd
9730d6b
JSON Schema
Structured Output
(raw) {"commit":"9730d6b"}
f7e8751
b9324d8
JSON Schema
Structured Output
(raw) {"commit":"b9324d8"}
16515cb
bf28aa2
JSON Schema
Structured Output
(raw) {"commit":"bf28aa2"}
f69eedd
9a79058
JSON Schema
Structured Output
(raw) {"commit":"9a79058"}
5876227
6dd23a3
JSON Schema
Structured Output
(raw) {"commit":"6dd23a3"}
e91e594
c76d1d8
JSON Schema
Structured Output
(raw) {"commit":"c76d1d8"}
261bd9c
b9cb019
JSON Schema
Structured Output
(raw) {"commit":"b9cb019"}
a38bb6a
77eaac7
JSON Schema
Structured Output
(raw) {"commit":"77eaac7"}
ff8d261
4a7f7ec
JSON Schema
Structured Output
(raw) {"commit":"4a7f7ec"}
2cd5cc6
c2d957e
JSON Schema
Structured Output
(raw) {"commit":"c2d957e"}
0d31c2b (change port)
bdc21e2
JSON Schema
Structured Output
(raw) { "commit": "bdc21e2" }
a827ea7 (change port)
81d3552
JSON Schema
Structured Output
(raw) {"commit":"81d3552"}
277f777 (change port)
a45c0c8
JSON Schema
Structured Output
(raw) {
"commit": "a45c0c8"
}
fe46e3c (change port)
3d2f5a0
JSON Schema
Structured Output
(raw) { "commit": "3d2f5a0" }
The failing commit is **1e25259** – the “change port” commit introduced the bug.
090cebf
JSON Schema
Structured Output
(raw) {"commit":"090cebf"}
ca4384c
5a745a6
JSON Schema
Structured Output
(raw) { "commit": "5a745a6" }
5bd29cc
(The `"change port"` commit is the first one that causes the tests to fail.)
b1f6948
JSON Schema
Structured Output
(raw) { "commit": "b1f6948" }
f5d0556 (the “change port” commit)
c089201
630b385
JSON Schema
Structured Output
(raw) {"commit": "630b385"}
f9e5936
4065975
JSON Schema
Structured Output
(raw) {
"commit": "4065975"
}
c7aa663
4635bcd
JSON Schema
Structured Output
(raw) {"commit": "4635bcd"}
f483a82
9e6c431
JSON Schema
Structured Output
(raw) {"commit": "9e6c431"}
e9078d6
2224e89
JSON Schema
Structured Output
(raw) {"commit": "2224e89"}
The bad commit is c39c7b5.
**Reasoning:**
- Tests passed for commits up to `64cfbfc` (add default config).
- The first failure occurred at `c39c7b5` (change port).
- Subsequent commits (`a7392e4`, `b6512db`) inherit the broken state, but the root cause is the first failing commit.
Answer: c39c7b5
c3b1c4b
JSON Schema
Structured Output
(raw) {
"commit": "c3b1c4b"
}
The bad commit is the first one that caused the test to fail. The test passed for the initial commit and adding the default config, but failed when the port was changed. Subsequent commits also failed, so the root cause is the first failure point.
**Answer:** 541e4f1
65ed133
JSON Schema
Structured Output
(raw) {"commit": "65ed133"}
The bad commit is **6c1830a**.
**Reasoning:**
The test results show that the build passes for commits up to `5f75dcf` (add default config). The first failure occurs at `6c1830a` (change port), which introduces the bug. Subsequent commits (`63d57e1` and `ad2fe17`) inherit the failure but are not the root cause. The commit subject line for `6c1830a` is "change port", but the hash is the direct identifier.
**Answer:**
6c1830a
2dfa2ae
JSON Schema
Structured Output
(raw) {
"commit": "2dfa2ae"
}
4bdf8a2
0f7a8ea
JSON Schema
Structured Output
(raw) {
"commit": "0f7a8ea"
}
The bad commit is f984149.
**Explanation:**
- The test results show that the first failure occurs at commit `f984149` (change port).
- All subsequent commits build on top of this commit and inherit the failure.
- Since the commits before `f984149` (`6751886` and `ed833b4`) passed, the bug must have been introduced in `f984149`.
Answer: `f984149`
3fc937a
JSON Schema
Structured Output
(raw) {"commit": "3fc937a"}
Looking at the test results chronologically:
- 6b98fd7 Initial commit: PASS
- aac878b add default config: PASS
- 2dcacd9 change port: **FAIL** ← First failure
The tests pass until commit `2dcacd9` ("change port"), which is the first commit to fail. This is the bad commit that introduced the bug.
**Answer: 2dcacd9**
708b7ef
JSON Schema
Structured Output
(raw) {
"commit": "708b7ef"
}
Based on the test results, the first commit where the build fails is **f1530aa** with the subject "change port". This is the commit that introduced the bug, as all subsequent commits also fail.
**Answer:** f1530aa
410ca02
JSON Schema
Structured Output
(raw) {"commit":"410ca02"}
Based on the test results, I can see that:
1. **b76f4f4 Initial commit**: PASS
2. **7d9e007 add default config**: PASS
3. **880a821 change port**: FAIL ← First failure
The build was passing up to and including commit `7d9e007`, but then failed starting with commit `880a821`. This indicates that commit introduced the bug.
**Bad commit: 880a821**
533e500
JSON Schema
Structured Output
(raw) {"commit":"533e500"}
Looking at the test results, I can see that:
- Commits `4cc8e71` and `050fb45` pass
- Commit `8f190a8` fails and all subsequent commits also fail
The bad commit is `8f190a8` with the subject "change port".
784e56e change port
JSON Schema
Structured Output
(raw) {"commit": "784e56e change port"}
Looking at the test results chronologically:
- b6ebc46 Initial commit: PASS
- c2f9ff2 add default config: PASS
- e063001 change port: FAIL
The tests pass up until commit `c2f9ff2`, but fail starting with `e063001`. This means the bug was introduced in commit `e063001` with the subject "change port".
**Answer: e063001**
4906688
JSON Schema
Structured Output
(raw) {
"commit": "4906688"
}
The bad commit is **f7373b0** ("change port").
**Reasoning:** Tracing the test results from oldest to newest:
| Commit | Subject | Result |
|--------|---------|--------|
| ab7a87d | Initial commit | ✅ PASS |
| 39b8eb3 | add default config | ✅ PASS |
| **f7373b0** | **change port** | ❌ FAIL |
| 1ab3684 | add feature flag | ❌ FAIL |
| c1a28b2 | add port constant | ❌ FAIL |
Commit `39b8eb3` was the last one to pass, and `f7373b0` ("change port") is the first commit that fails the build. All subsequent commits also fail, confirming that the bug was introduced in **f7373b0**.
0f5de71
JSON Schema
Structured Output
(raw)
{"commit":"0f5de71"}
The bad commit is **6efa32a** ("change port").
The tests pass through `4e21e8e` (add default config) and first fail at `6efa32a` (change port). All subsequent commits remain failing, confirming that `6efa32a` is the commit that introduced the regression.
49b69b1
JSON Schema
Structured Output
(raw)
{"commit":"49b69b1"}
f724b08
9fe9492
JSON Schema
Structured Output
(raw)
{"commit":"9fe9492"}
The bad commit is **3b385c1** (change port).
Reasoning: The tests pass on the first two commits (7732f45 and 5df399e), but start failing from 3b385c1 onward. Since 5df399e is the last known good commit and 3b385c1 is the first failing commit, the commit that introduced the bug is `3b385c1 change port`.
405b0a7
JSON Schema
Structured Output
(raw)
{"commit":"405b0a7"}
ade9c04
6cbf4b6
JSON Schema
Structured Output
(raw) {"commit":"6cbf4b6"}
1bd1023
d2f5fc1
JSON Schema
Structured Output
(raw)
{"commit":"d2f5fc1"}
41138d8
6a178d4
JSON Schema
Structured Output
(raw) {
"commit": "6a178d4"
}
dd5dd3b
aca61df
JSON Schema
Structured Output
(raw) {
"commit": "aca61df"
}
60b2797
d120fad change port
JSON Schema
Structured Output
(raw) {
"commit": "d120fad change port"
}
bb7c447
296d80b change port
JSON Schema
Structured Output
(raw) {
"commit": "296d80b change port"
}
399016b
07e75af
JSON Schema
Structured Output
(raw) {
"commit": "07e75af"
}
8e75d5f
5221868
JSON Schema
Structured Output
(raw) {
"commit": "5221868"
}
27ed23d
f2b0fcd
JSON Schema
Structured Output
(raw) {
"commit": "f2b0fcd"
}
5e915a0
6b0b8c9
JSON Schema
Structured Output
(raw) { "commit": "6b0b8c9" }
ce53469
6c4e0d9
JSON Schema
Structured Output
(raw) {
"commit": "6c4e0d9"
}
9727bee
0c0e1e8
JSON Schema
Structured Output
(raw) {
"commit": "0c0e1e8"
}
366b04f
e4b2a71
524aba2
5727ef2
815c966
c654954
fbd6d1b
455196b
1b3eba4
7eb6011
06f39ea
aa610f7
000ab48
49eceb7
Based on the test results, the build was passing at commit `057a7ef` and started failing at commit `8b43555`. Since the tests are ordered oldest first and the first failure occurs at `8b43555`, this is the commit that introduced the bug.
**8b43555**
1e4f5bc
The bad commit is **88a0e8f** ("change port").
This is the first commit where the test fails. The previous commit `067279f` ("add default config") passed, so `88a0e8f` is the commit that introduced the bug.
The bad commit is **b2c205a** (subject: "change port").
Reasoning: This is the first commit in the history (from oldest to newest) where the test result transitions from PASS to FAIL. The previous commit `383caed add default config` passed, and the very next commit `b2c205a change port` failed. This makes `b2c205a` the commit that introduced the bug.
The bad commit is **c70f1fe** with the subject line **"change port"**.
This is the first commit where the test result changed from PASS to FAIL. The previous commit (`17bb20f add default config`) passed, so `c70f1fe change port` is the commit that introduced the bug.
d0fec4c
The bad commit is **cfe90e3** ("change port").
**Reasoning:** This is a straightforward git bisect scenario. Looking at the test results from oldest to newest:
- `a12ed55` Initial commit: **PASS** ✅
- `ecc82d2` add default config: **PASS** ✅
- `cfe90e3` change port: **FAIL** ❌
- `891b912` add feature flag: **FAIL** ❌
- `6fd9c36` add port constant: **FAIL** ❌
The last passing commit is `ecc82d2`, and the first failing commit is `cfe90e3`. Therefore, `cfe90e3` introduced the bug. All subsequent commits continue to fail, consistent with the build remaining broken from that point forward.
9d66acf
845a7d2 change port
JSON Schema
Structured Output
(raw) {
"commit":"845a7d2 change port"
}
764c50d
7bee58b
JSON Schema
Structured Output
(raw) {
"commit": "7bee58b"
}
83985d1
0c6602b
JSON Schema
Structured Output
(raw) {
"commit": "0c6602b"
}
d38e628
fccdad6 change port
JSON Schema
Structured Output
(raw) {"commit": "fccdad6 change port"}
3d92995
e5c2486 change port
JSON Schema
Structured Output
(raw) {"commit": "e5c2486 change port"}
59642d9
9af97fa
JSON Schema
Structured Output
(raw) {
"commit": "9af97fa"
}
The bad commit is **69256a7** ("change port").
This is determined by finding the first commit where the test result transitions from PASS to FAIL:
- `f041da1` — PASS ✓
- `6adfc6e` — PASS ✓
- `69256a7` — **FAIL** ✗ ← first failure
- `4dc51ea` — FAIL ✗
- `747fe1e` — FAIL ✗
The commit `69256a7` ("change port") is the one that introduced the bug.
4f6a9b1
JSON Schema
Structured Output
(raw) {"commit": "4f6a9b1"}
3992623
ea4930a change port
JSON Schema
Structured Output
(raw) {
"commit": "ea4930a change port"
}
The bad commit is **7df1e9d** ("change port").
This is determined by looking at the test results: the build passes at `930004c` (add default config) and first fails at `7df1e9d` (change port). All subsequent commits also fail, confirming that `7df1e9d` is the commit that introduced the bug.
0b8bc37
JSON Schema
Structured Output
(raw) {"commit":"0b8bc37"}
8518b7c
33f1a7a
JSON Schema
Structured Output
(raw) {
"commit": "33f1a7a"
}
c62285a
a81e289
JSON Schema
Structured Output
(raw) {"commit":"a81e289"}
99c1b04
8d42912
JSON Schema
Structured Output
(raw) {"commit":"8d42912"}
dc26bf0
d73d305
JSON Schema
Structured Output
(raw) {"commit":"d73d305"}
efe17c6
b62174e
JSON Schema
Structured Output
(raw) {"commit":"b62174e"}
e981b3c
95873cc
JSON Schema
Structured Output
(raw) {"commit":"95873cc"}
**7ac9e86** ("change port") is the bad commit.
This is a straightforward linear analysis:
- `e9cf018` Initial commit → PASS
- `06fe22b` add default config → PASS
- `7ac9e86` change port → **FAIL** (first failure)
- All subsequent commits (`160499e`, `d0980cd`) also FAIL
Since the build passed on `06fe22b` and first broke at `7ac9e86`, that commit introduced the bug. This mirrors what `git bisect` would find: the first commit in the sequence where the test flips from passing to failing.
The bad commit is **9bf5b96** ("change port") — it's the first commit where tests fail; all earlier commits pass.
**Bad commit: `cb969b0` — "change port"**
**Reasoning:**
Looking at the test results chronologically (oldest first):
| Commit | Subject | Result |
|---|---|---|
| `51415e6` | Initial commit | ✅ PASS |
| `3af470c` | add default config | ✅ PASS |
| `cb969b0` | change port | ❌ **FAIL** |
| `f81b7dd` | add feature flag | ❌ FAIL |
| `7e773b9` | add port constant | ❌ FAIL |
Since `3af470c` (add default config) passes and `cb969b0` (change port) is the first commit to fail, the build break was introduced by `cb969b0`. All subsequent commits (`f81b7dd`, `7e773b9`) also fail, which is consistent with them inheriting the bug — they did not introduce it.
This is exactly what `git bisect` would identify as the first bad commit.
1d68c58
2452086
JSON Schema
Structured Output
(raw) { "commit": "2452086" }
5abb60b
057d69d
JSON Schema
Structured Output
(raw) { "commit": "057d69d" }
a98e5ca
2c87420
JSON Schema
Structured Output
(raw) { "commit": "2c87420" }
47c625e change port
22f2ad8
JSON Schema
Structured Output
(raw) { "commit": "22f2ad8" }
56e76ca
0242c62
JSON Schema
Structured Output
(raw) { "commit": "0242c62" }
d302cfa
4254e11
JSON Schema
Structured Output
(raw) {"commit": "4254e11"}
b4d114d (change port)
f68ae59
JSON Schema
Structured Output
(raw) {"commit": "f68ae59"}
b1e7887
c89dd7b
JSON Schema
Structured Output
(raw) { "commit": "c89dd7b" }
619116a
1937b97
JSON Schema
Structured Output
(raw) {
"commit": "1937b97"
}
6eff949<|end_message|>
f8a424b
71fe270
JSON Schema
Structured Output
(raw) {"commit":"71fe270"}
f9c6ac8
d59e578
0d36e7e
JSON Schema
Structured Output
(raw) {
"commit": "0d36e7e"
}
The first commit that fails is **486146c** (subject: `change port`).
- `bd7c1d7` PASS
- `945d5a6` PASS
- `486146c` FAIL ← bug introduced here
- `6675dbe` FAIL
- `aaee787` FAIL
**Answer:** `486146c`
cfbadb5
JSON Schema
Structured Output
(raw) { "commit": "cfbadb5" }
83da9d9
61180b6
JSON Schema
Structured Output
(raw) { "commit": "61180b6" }
65c7674<|end_message|>
fa25243
JSON Schema
Structured Output
(raw) {"commit":"fa25243"}
2732c8b
57b0656
ab68d9d
JSON Schema
Structured Output
(raw) {"commit":"ab68d9d"}
The test results show that commits 61ffcf6 and 5ed0c1f both pass. The very next commit in the history (541e4f1) is the first one to produce a failing test. All later commits continue to fail, confirming that the bug was introduced exactly when "change port" landed and was never subsequently fixed.
Thus the bad commit is 541e4f1.
Final answer: 541e4f1
ca955c3
JSON Schema
Structured Output
(raw) {"commit": "ca955c3"}
b869933
c158fff
JSON Schema
Structured Output
(raw) {"commit":"c158fff"}
The commit history is linear, and the provided test results explicitly show a clean pass/fail transition point. The two oldest commits both exit with code 0 (green builds). The third commit, `1f21d76`, is the first one whose test run exits with a non-zero code; every subsequent commit also fails.
Consequently the single commit that introduced the regression is the one whose subject line is “change port” (hash `1f21d76`).
Final answer: 1f21d76
cdfa4da
JSON Schema
Structured Output
(raw) {"commit":"cdfa4da"}
f389cb4
0aaf71b
JSON Schema
Structured Output
(raw) {"commit":"0aaf71b"}
0eb7fd4
afd5cf4
JSON Schema
Structured Output
(raw) {"commit": "afd5cf4"}
803deba
6324657
JSON Schema
Structured Output
(raw) {"commit":"6324657"}
2519d5e
0d3673f
JSON Schema
Structured Output
(raw) {"commit":"0d3673f"}
623ddab
4529337
JSON Schema
Structured Output
(raw) {"commit":"4529337"}
87f1061
f52773d
JSON Schema
Structured Output
(raw) {
"commit": "f52773d"
}
e78a313
36aa612
JSON Schema
Structured Output
(raw) {"commit":"36aa612"}
ec4567b
b836e15
JSON Schema
Structured Output
(raw) {"commit":"b836e15"}
6ae9035
88372f4
JSON Schema
Structured Output
(raw) {"commit":"88372f4"}
806dfd4
55020df
JSON Schema
Structured Output
(raw) {"commit":"55020df"}
e46f93f
e5dd1fc
JSON Schema
Structured Output
(raw) {"commit":"e5dd1fc"}
ec63a90
d86729d
JSON Schema
Structured Output
(raw) {"commit":"d86729d"}
**8275349** — "change port"
**Reasoning:** This is a classic bisection. Walking the history from oldest to newest, the test results were:
| Commit | Subject | Result |
|---|---|---|
| fef4a24 | Initial commit | ✅ PASS |
| fc251c1 | add default config | ✅ PASS |
| **8275349** | **change port** | ❌ **FAIL** ← first failure |
| 92bfad5 | add feature flag | ❌ FAIL |
| dffbcc4 | add port constant | ❌ FAIL |
The build was passing at `fc251c1` and started failing at `8275349`. Since every commit after it also fails, `8275349` ("change port") is the first bad commit — it introduced the bug (likely by changing the port to a value that broke the test/configuration). The subsequent commits did not introduce the failure; they merely inherited it.
302c72b
JSON Schema
Structured Output
(raw) {"commit": "302c72b"}
**f503ce1** (commit subject: `change port`)
**Reasoning:** The test results show the build passing at `a373552` and first failing at `f503ce1`. Since this is the first commit where the test output changes from PASS to FAIL, `f503ce1` is the commit that introduced the bug. The subsequent commits (`b0b6536`, `b1657bd`) merely inherited the already-broken state.
903e847
JSON Schema
Structured Output
(raw) {"commit":"903e847"}
**317fd98** — "change port"
**Reasoning (bisect):**
| Commit | Result |
|---|---|
| 0e8a779 Initial commit | ✅ PASS |
| a1863b1 add default config | ✅ PASS |
| **317fd98 change port** | ❌ **FAIL** ← first failure |
| 31d36d6 add feature flag | ❌ FAIL |
| 0f8cdd1 add port constant | ❌ FAIL |
The build was green up through `a1863b1` and turned red at `317fd98`, with every subsequent commit also failing. Since the bug was introduced at the boundary between the last passing commit and the first failing one, **317fd98 ("change port")** is the bad commit that broke the build.
082b28e
JSON Schema
Structured Output
(raw) {"commit":"082b28e"}
## Analysis
Using a **bisect**-style approach, I compared the test results for each commit from oldest to newest, looking for the first transition from PASS to FAIL:
| Commit | Subject | Result |
|---|---|---|
| `7d862e7` | Initial commit | ✅ PASS |
| `a324bf9` | add default config | ✅ PASS |
| **`7c55e9c`** | **change port** | ❌ **FAIL** ← first failure |
| `52efc92` | add feature flag | ❌ FAIL |
| `16ef82d` | add port constant | ❌ FAIL |
The last known good commit is `a324bf9`, and the first known bad commit is `7c55e9c`. All subsequent commits still fail, confirming that `7c55e9c` is the commit that introduced the bug.
## Answer
**`7c55e9c`** — *change port*
1b985bb
JSON Schema
Structured Output
(raw) {"commit":"1b985bb"}
f3eee68
2281e5a
JSON Schema
Structured Output
(raw) {
"commit": "2281e5a"
}
## Analysis
Looking at the test results from oldest to newest commit:
| Commit | Hash | Result |
|---|---|---|
| Initial commit | `fbfdedd` | ✅ PASS |
| add default config | `f00f2fc` | ✅ PASS |
| change port | `79be5d3` | ❌ **FAIL** |
| add feature flag | `519af49` | ❌ FAIL |
| add port constant | `62ab79a` | ❌ FAIL |
The first commit to introduce the failure is **`79be5d3`** — everything before it passed, and it (plus all subsequent commits) fails.
## Bad commit
```
79be5d3 (change port)
```
a54ade6
JSON Schema
Structured Output
(raw) { "commit": "a54ade6" }
**429d230** (change port)
Reasoning: The tests pass up to and including `bbc0431` ("add default config") and begin failing at `429d230` ("change port"). Since the failure first appears at that commit and persists through all subsequent commits, `429d230` is the commit that introduced the bug.
423cd89
JSON Schema
Structured Output
(raw) {
"commit": "423cd89"
}
**ff90053** ("change port")
**Reasoning:**
Looking at the test results in chronological (oldest first) order:
| Commit | Subject | Result |
|--------|---------|--------|
| 4111f3f | Initial commit | PASS |
| 0d3f811 | add default config | PASS |
| **ff90053** | **change port** | **FAIL** ← first failure |
| cb5a19b | add feature flag | FAIL |
| 562a1ba | add port constant | FAIL |
The build passes at `4111f3f` and `0d3f811`, then starts failing at `ff90053` and continues failing for every subsequent commit. Since the state of the tree at `ff90053` is the first to exhibit the failure, and all later commits inherit that broken state (they fail as well, never restoring the pass), the regression was introduced by `ff90053 change port` — a bad change to the port value (likely an invalid/out-of-range or mismatched port) that broke the build.
The later commits (`cb5a19b`, `562a1ba`) are merely *carrying* the bug forward; they didn't introduce it (they also fail, but so did the commit before them). By standard bisect logic (find the first commit where PASS transitions to FAIL), the culprit is `ff90053`.
a1b0e38
JSON Schema
Structured Output
(raw) { "commit": "a1b0e38" }
## Reasoning
**Step 1 — Establish the boundary between good and bad builds.**
Working through the test results in chronological (oldest → newest) order:
| Order | Commit | Subject | Result |
|-------|--------|---------|--------|
| 1 | `90ff152` | Initial commit | PASS ✅ |
| 2 | `134d254` | add default config | PASS ✅ |
| 3 | `4959857` | change port | FAIL ❌ |
| 4 | `3c92341` | add feature flag | FAIL ❌ |
| 5 | `2c64632` | add port constant | FAIL ❌ |
**Step 2 — Apply the bisect invariant.**
For a single bad commit, the history must look like:
```
good → good → [BAD] → bad → bad
```
There is exactly one transition from PASS to FAIL in the sequence, and it occurs between `134d254` (last PASS) and `4959857` (first FAIL). Since `134d254` still builds and every commit from `4959857` onward fails, the failure cannot be caused by `3c92341` or `2c64632` — the build was already broken by the time they were committed. Those later commits only *inherit* the broken state (note that `2c64632 add port constant` did **not** restore the build, confirming the breakage is not later-reverted).
**Step 3 — Conclusion.**
The commit that changed the port (`change port`) is the one that introduced the bug — consistent with the semantic hint: `134d254 add default config` set a default port that passed tests, `4959857 change port` changed it to a value the tests reject, and `2c64632 add port constant` only extracted a constant without correcting the bad value.
## Final Answer
**4959857** (subject: `change port`)
4163f05 (change port)
JSON Schema
Structured Output
(raw) { "commit": "4163f05 (change port)" }
## Analysis
Looking at the test results in chronological order (oldest → newest):
| Commit | Subject | Result |
|--------|---------|--------|
| 4a2819a | Initial commit | PASS ✅ |
| 8fb64e1 | add default config | PASS ✅ |
| **3a30c3d** | **change port** | **FAIL ❌** |
| 7d8a28f | add feature flag | FAIL ❌ |
| de39ffa | add port constant | FAIL ❌ |
The build transitions from **PASS → FAIL** exactly at commit `3a30c3d`. All subsequent commits remain failing because the bug introduced in `3a30c3d` was never fixed by any of the later commits (which added other features but did not resolve the port issue).
## Answer
**`3a30c3d`** (commit subject: *change port*)
51e514c
JSON Schema
Structured Output
(raw) {"commit": "51e514c"}
## Reasoning
The standard `git bisect` approach: find the boundary between the last known-good commit and the first known-bad commit.
**Ordered test results (oldest → newest):**
| # | Commit | Subject | Result |
|---|--------|---------|--------|
| 1 | `7522449` | Initial commit | PASS (0) |
| 2 | `dd46cee` | add default config | PASS (0) |
| 3 | `8f60056` | change port | **FAIL (1)** |
| 4 | `966efdb` | add feature flag | FAIL (1) |
| 5 | `606cf8b` | add port constant | FAIL (1) |
**Analysis:**
1. The first two commits build and pass — the tree is healthy at `dd46cee`.
2. The failure appears exactly at `8f60056` and *persists* through every later commit (`966efdb`, `606cf8b`).
The key distinction is that `966efdb` and `606cf8b` are **not independently guilty** — they merely inherit the broken state from their parent. Since each commit passed/failed in a monotonic way (PASS, PASS, FAIL, FAIL, FAIL) — a classic single-regression pattern — the bug must have been introduced at the **transition point** where PASS became FAIL.
3. The transition is `dd46cee` (PASS) → `8f60056` (FAIL). Therefore `8f60056` is the culprit.
Note that `606cf8b` ("add port constant") attempts to clean up the port value and `966efdb` adds unrelated logic, but neither restores the build — consistent with the damage already having been done in the "change port" commit (e.g., the port was changed to a value that mismatches a hard-coded constant or violates a test's expected value).
The bad commit is the one at the bisect boundary: **`8f60056`**.
## Final Answer
**8f60056** — commit subject: "change port"
21bb95a change port
JSON Schema
Structured Output
(raw) { "commit": "21bb95a change port" }
e814324
be869f5
JSON Schema
Structured Output
(raw) { "commit": "be869f5" }
bf7a483
07d8c16
JSON Schema
Structured Output
(raw) { "commit": "07d8c16" }
d1cef2e
3b75114
JSON Schema
Structured Output
(raw) { "commit": "3b75114" }
397c869 change port
8c19e61
b3f5860
JSON Schema
Structured Output
(raw) { "commit": "b3f5860" }
36525e6
5fe012a
JSON Schema
Structured Output
(raw) { "commit": "5fe012a" }
6e22d3c
5d2f9a9
JSON Schema
Structured Output
(raw) {
"commit": "5d2f9a9"
}
The bad commit that introduced the bug is:
53c9a7e
a5be1c6
JSON Schema
Structured Output
(raw) { "commit": "a5be1c6" }
8e9ddd8
1fe87f8 change port
JSON Schema
Structured Output
(raw) {"commit": "1fe87f8 change port"}
868e64f
cd0fba6
JSON Schema
Structured Output
(raw) { "commit": "cd0fba6" }
**Bad commit: `de1a7f5` — "change port"**
**Reasoning:**
Testing each commit from oldest to newest:
- `62a0f73` Initial commit: PASS
- `e9f2f48` add default config: PASS
- `de1a7f5` change port: **FAIL** ← first failure
- `552b917` add feature flag: FAIL
- `3b1496a` add port constant: FAIL
Since `e9f2f48` passed and `de1a7f5` was the first commit to fail, `de1a7f5` ("change port") is the commit that introduced the bug. This is exactly the binary search logic `git bisect` uses to find the first bad commit.
f9d3382 change port
JSON Schema
Structured Output
(raw) { "commit": "f9d3382 change port" }
**be64db1** — "change port"
It's the first commit in the history whose test run failed; all prior commits passed, so this commit introduced the bug (subsequent commits inherited the failure).
**Bad commit: `feab84c` ("change port")**
**Reasoning:**
This is a classic git bisect scenario. Working from the oldest commit to the newest:
| Commit | Subject | Test Result |
|--------|---------|-------------|
| `7225b8f` | Initial commit | ✅ PASS |
| `6e6b46d` | add default config | ✅ PASS |
| `feab84c` | **change port** | ❌ **FAIL** |
| `a518d6e` | add feature flag | ❌ FAIL |
| `cccfe8b` | add port constant | ❌ FAIL |
The first commit where the test transitions from **PASS → FAIL** is `feab84c` ("change port"). All subsequent commits also fail, which is consistent with a bug being introduced at `feab84c` and carried forward.
In git bisect terms:
```
git bisect good 6e6b46d
git bisect bad feab84c
# feab84c is the first bad commit
```
The commit subject "change port" also fits — changing a port value is a plausible way to break a build or test (e.g., tests connecting to the old port).
68cd18b
JSON Schema
Structured Output
(raw) {"commit": "68cd18b"}
**Bad commit: 7825ba2 ("change port")**
The first failing commit in the history is `7825ba2`, since `22efd0f` passed and all subsequent commits (including `7825ba2`) failed. That's the commit that introduced the bug.
1fb732a
JSON Schema
Structured Output
(raw) { "commit": "1fb732a" }
**Bad commit: `adbcc23` ("change port")**
**Reasoning:**
- `8a2d323` (Initial commit) — PASS
- `493bcd4` (add default config) — PASS
- `adbcc23` (change port) — **FAIL** ← first failure
- `424362f` and `fef0329` — FAIL (but these likely just inherited the breakage)
Since all commits before `adbcc23` pass and it is the first commit where the tests fail, `adbcc23` is the commit that introduced the bug. This is exactly the bisection logic used by `git bisect` — the culprit is the earliest failing commit, not the later ones that merely inherited the broken state.
144aaef
JSON Schema
Structured Output
(raw) {"commit":"144aaef"}
Invalid JSON. Output:
JSON Schema
Structured Output
Structured Output Error
Failed to parse structured JSON response: Expecting value: line 1 column 1 (char 0)
Failure: Failed to parse structured JSON response: Expecting value: line 1 column 1 (char 0)
Invalid JSON. Output:
JSON Schema
Structured Output
Structured Output Error
Failed to parse structured JSON response: Expecting value: line 1 column 1 (char 0)
Failure: Failed to parse structured JSON response: Expecting value: line 1 column 1 (char 0)
Invalid JSON. Output:
JSON Schema
Structured Output
Structured Output Error
Failed to parse structured JSON response: Expecting value: line 1 column 1 (char 0)
Failure: Failed to parse structured JSON response: Expecting value: line 1 column 1 (char 0)
Invalid JSON. Output:
JSON Schema
Structured Output
Structured Output Error
Failed to parse structured JSON response: Expecting value: line 1 column 1 (char 0)
Failure: Failed to parse structured JSON response: Expecting value: line 1 column 1 (char 0)
Invalid structured output. Output: 8414171
JSON Schema
Structured Output
Structured Output Error
Structured output schema validation failed: $ must be of type object
Failure: Structured output schema validation failed: $ must be of type object
b334454 add port constant
JSON Schema
Structured Output
(raw) {
"commit": "b334454 add port constant"
}
Failure: Expected target hash/prefix or subject 'change port'
Invalid JSON. Output: The bad commit is **e3083c3** — it's the first commit after "add default config" that caused the build to fail, as subsequent commits also failed but only after this point.
**Answer:** e3083c3
JSON Schema
Structured Output
Structured Output Error
Failed to parse structured JSON response: Expecting value: line 1 column 1 (char 0)
Failure: Failed to parse structured JSON response: Expecting value: line 1 column 1 (char 0)
Invalid JSON. Output:
JSON Schema
Structured Output
Structured Output Error
Failed to parse structured JSON response: Expecting value: line 1 column 1 (char 0)
Failure: Failed to parse structured JSON response: Expecting value: line 1 column 1 (char 0)
Invalid JSON. Output:
JSON Schema
Structured Output
Structured Output Error
Failed to parse structured JSON response: Expecting value: line 1 column 1 (char 0)
Failure: Failed to parse structured JSON response: Expecting value: line 1 column 1 (char 0)
analysis
JSON Schema
Structured Output
(raw) {"commit":"analysis"}
Failure: Expected target hash/prefix or subject 'change port'
(empty output)
JSON Schema
Structured Output
Failure: Error code: 400 - {'error': {'message': 'Provider returned error', 'code': 400, 'metadata': {'raw': '{"error":{"message":"<400> InternalError.Algo.InvalidParameter: \'messages\' must contain the word \'json\' in some form, to use \'response_format\' of type \'json_object\'.","type":"invalid_request_error","param":null,"code":"invalid_parameter_error"},"id":"chatcmpl-aa5dc41a-2035-986a-8fe0-d4255f149841","request_id":"aa5dc41a-2035-986a-8fe0-d4255f149841"}', 'provider_name': 'Alibaba', 'is_byok': False}}, 'user_id': 'user_3FrVBkmFqVIuZ58dEh7AU8vhXUV'}
(empty output)
JSON Schema
Structured Output
Failure: Error code: 400 - {'error': {'message': 'Provider returned error', 'code': 400, 'metadata': {'raw': '{"error":{"message":"<400> InternalError.Algo.InvalidParameter: \'messages\' must contain the word \'json\' in some form, to use \'response_format\' of type \'json_object\'.","type":"invalid_request_error","param":null,"code":"invalid_parameter_error"},"id":"chatcmpl-ad5f940e-67ff-9c73-8409-315aac548073","request_id":"ad5f940e-67ff-9c73-8409-315aac548073"}', 'provider_name': 'Alibaba', 'is_byok': False}}, 'user_id': 'user_3FrVBkmFqVIuZ58dEh7AU8vhXUV'}
(empty output)
JSON Schema
Structured Output
Failure: Error code: 400 - {'error': {'message': 'Provider returned error', 'code': 400, 'metadata': {'raw': '{"error":{"message":"<400> InternalError.Algo.InvalidParameter: \'messages\' must contain the word \'json\' in some form, to use \'response_format\' of type \'json_object\'.","type":"invalid_request_error","param":null,"code":"invalid_parameter_error"},"id":"chatcmpl-d5460bad-3648-9dd2-bbe5-69ae324faac7","request_id":"d5460bad-3648-9dd2-bbe5-69ae324faac7"}', 'provider_name': 'Alibaba', 'is_byok': False}}, 'user_id': 'user_3FrVBkmFqVIuZ58dEh7AU8vhXUV'}
(empty output)
JSON Schema
Structured Output
Failure: Error code: 400 - {'error': {'message': 'Provider returned error', 'code': 400, 'metadata': {'raw': '{"error":{"message":"<400> InternalError.Algo.InvalidParameter: \'messages\' must contain the word \'json\' in some form, to use \'response_format\' of type \'json_object\'.","type":"invalid_request_error","param":null,"code":"invalid_parameter_error"},"id":"chatcmpl-82bfe362-06df-961e-a7f3-207e0df6bf86","request_id":"82bfe362-06df-961e-a7f3-207e0df6bf86"}', 'provider_name': 'Alibaba', 'is_byok': False}}, 'user_id': 'user_3FrVBkmFqVIuZ58dEh7AU8vhXUV'}
(empty output)
JSON Schema
Structured Output
Failure: Error code: 400 - {'error': {'message': 'Provider returned error', 'code': 400, 'metadata': {'raw': '{"error":{"message":"<400> InternalError.Algo.InvalidParameter: \'messages\' must contain the word \'json\' in some form, to use \'response_format\' of type \'json_object\'.","type":"invalid_request_error","param":null,"code":"invalid_parameter_error"},"id":"chatcmpl-879274c3-fbbb-9fa3-8081-a1dab5b409ec","request_id":"879274c3-fbbb-9fa3-8081-a1dab5b409ec"}', 'provider_name': 'Alibaba', 'is_byok': False}}, 'user_id': 'user_3FrVBkmFqVIuZ58dEh7AU8vhXUV'}
(empty output)
JSON Schema
Structured Output
Failure: Error code: 400 - {'error': {'message': 'Provider returned error', 'code': 400, 'metadata': {'raw': 'data: {"error":{"code":"invalid_parameter_error","param":null,"message":"\'messages\' must contain the word \'json\' in some form, to use \'response_format\' of type \'json_object\'.","type":"invalid_request_error"},"id":"chatcmpl-869098e4-5a45-9929-9d65-0fe82a7694ff"}\n\n', 'provider_name': 'Alibaba', 'is_byok': False}}, 'user_id': 'user_3FrVBkmFqVIuZ58dEh7AU8vhXUV'}
(empty output)
JSON Schema
Structured Output
Failure: Error code: 400 - {'error': {'message': 'Provider returned error', 'code': 400, 'metadata': {'raw': 'data: {"error":{"code":"invalid_parameter_error","param":null,"message":"\'messages\' must contain the word \'json\' in some form, to use \'response_format\' of type \'json_object\'.","type":"invalid_request_error"},"id":"chatcmpl-a9aee63d-cf1b-95ad-960b-6f7094ac1d7b"}\n\n', 'provider_name': 'Alibaba', 'is_byok': False}}, 'user_id': 'user_3FrVBkmFqVIuZ58dEh7AU8vhXUV'}
(empty output)
JSON Schema
Structured Output
Failure: Error code: 400 - {'error': {'message': 'Provider returned error', 'code': 400, 'metadata': {'raw': 'data: {"error":{"code":"invalid_parameter_error","param":null,"message":"\'messages\' must contain the word \'json\' in some form, to use \'response_format\' of type \'json_object\'.","type":"invalid_request_error"},"id":"chatcmpl-97c16312-90ad-93af-b76c-5dd021be3966"}\n\n', 'provider_name': 'Alibaba', 'is_byok': False}}, 'user_id': 'user_3FrVBkmFqVIuZ58dEh7AU8vhXUV'}
(empty output)
JSON Schema
Structured Output
Failure: Error code: 400 - {'error': {'message': 'Provider returned error', 'code': 400, 'metadata': {'raw': 'data: {"error":{"code":"invalid_parameter_error","param":null,"message":"\'messages\' must contain the word \'json\' in some form, to use \'response_format\' of type \'json_object\'.","type":"invalid_request_error"},"id":"chatcmpl-5f4090b0-f124-98f3-b301-e35ff0f7be61"}\n\n', 'provider_name': 'Alibaba', 'is_byok': False}}, 'user_id': 'user_3FrVBkmFqVIuZ58dEh7AU8vhXUV'}
(empty output)
JSON Schema
Structured Output
Failure: Error code: 400 - {'error': {'message': 'Provider returned error', 'code': 400, 'metadata': {'raw': 'data: {"error":{"code":"invalid_parameter_error","param":null,"message":"\'messages\' must contain the word \'json\' in some form, to use \'response_format\' of type \'json_object\'.","type":"invalid_request_error"},"id":"chatcmpl-6d061d49-e9b5-91f6-b225-c3700e6b6aac"}\n\n', 'provider_name': 'Alibaba', 'is_byok': False}}, 'user_id': 'user_3FrVBkmFqVIuZ58dEh7AU8vhXUV'}
(empty output)
JSON Schema
Structured Output
Failure: Error code: 400 - {'error': {'message': 'Provider returned error', 'code': 400, 'metadata': {'raw': 'data: {"error":{"code":"invalid_parameter_error","param":null,"message":"\'messages\' must contain the word \'json\' in some form, to use \'response_format\' of type \'json_object\'.","type":"invalid_request_error"},"id":"chatcmpl-20fb7831-4702-964c-8cc9-922d1585b571"}\n\n', 'provider_name': 'Alibaba', 'is_byok': False}}, 'user_id': 'user_3FrVBkmFqVIuZ58dEh7AU8vhXUV'}
(empty output)
JSON Schema
Structured Output
Failure: Error code: 400 - {'error': {'message': 'Provider returned error', 'code': 400, 'metadata': {'raw': '{"error":{"message":"<400> InternalError.Algo.InvalidParameter: \'messages\' must contain the word \'json\' in some form, to use \'response_format\' of type \'json_object\'.","type":"invalid_request_error","param":null,"code":"invalid_parameter_error"},"id":"chatcmpl-afd19ae5-3a21-95d5-b073-58d73cafdf3b","request_id":"afd19ae5-3a21-95d5-b073-58d73cafdf3b"}', 'provider_name': 'Alibaba', 'is_byok': False}}, 'user_id': 'user_3FrVBkmFqVIuZ58dEh7AU8vhXUV'}
(empty output)
JSON Schema
Structured Output
Failure: Error code: 400 - {'error': {'message': 'Provider returned error', 'code': 400, 'metadata': {'raw': '{"error":{"message":"<400> InternalError.Algo.InvalidParameter: \'messages\' must contain the word \'json\' in some form, to use \'response_format\' of type \'json_object\'.","type":"invalid_request_error","param":null,"code":"invalid_parameter_error"},"id":"chatcmpl-c31252df-392d-9bba-846a-4112c879d81a","request_id":"c31252df-392d-9bba-846a-4112c879d81a"}', 'provider_name': 'Alibaba', 'is_byok': False}}, 'user_id': 'user_3FrVBkmFqVIuZ58dEh7AU8vhXUV'}
(empty output)
JSON Schema
Structured Output
Failure: Error code: 400 - {'error': {'message': 'Provider returned error', 'code': 400, 'metadata': {'raw': '{"error":{"message":"<400> InternalError.Algo.InvalidParameter: \'messages\' must contain the word \'json\' in some form, to use \'response_format\' of type \'json_object\'.","type":"invalid_request_error","param":null,"code":"invalid_parameter_error"},"id":"chatcmpl-0831c242-630e-9114-bbb6-3cc01a81e5e8","request_id":"0831c242-630e-9114-bbb6-3cc01a81e5e8"}', 'provider_name': 'Alibaba', 'is_byok': False}}, 'user_id': 'user_3FrVBkmFqVIuZ58dEh7AU8vhXUV'}
(empty output)
JSON Schema
Structured Output
Failure: Error code: 400 - {'error': {'message': 'Provider returned error', 'code': 400, 'metadata': {'raw': '{"error":{"message":"<400> InternalError.Algo.InvalidParameter: \'messages\' must contain the word \'json\' in some form, to use \'response_format\' of type \'json_object\'.","type":"invalid_request_error","param":null,"code":"invalid_parameter_error"},"id":"chatcmpl-01fb5fb4-7fe3-98c2-b836-316c6fbdb2b1","request_id":"01fb5fb4-7fe3-98c2-b836-316c6fbdb2b1"}', 'provider_name': 'Alibaba', 'is_byok': False}}, 'user_id': 'user_3FrVBkmFqVIuZ58dEh7AU8vhXUV'}
(empty output)
JSON Schema
Structured Output
Failure: Error code: 400 - {'error': {'message': 'Provider returned error', 'code': 400, 'metadata': {'raw': '{"error":{"message":"<400> InternalError.Algo.InvalidParameter: \'messages\' must contain the word \'json\' in some form, to use \'response_format\' of type \'json_object\'.","type":"invalid_request_error","param":null,"code":"invalid_parameter_error"},"id":"chatcmpl-9c84996b-5c63-9d04-a39b-b951ec86b00c","request_id":"9c84996b-5c63-9d04-a39b-b951ec86b00c"}', 'provider_name': 'Alibaba', 'is_byok': False}}, 'user_id': 'user_3FrVBkmFqVIuZ58dEh7AU8vhXUV'}
(empty output)
JSON Schema
Structured Output
Failure: Error code: 400 - {'error': {'message': 'Provider returned error', 'code': 400, 'metadata': {'raw': '{"error":{"message":"<400> InternalError.Algo.InvalidParameter: \'messages\' must contain the word \'json\' in some form, to use \'response_format\' of type \'json_object\'.","type":"invalid_request_error","param":null,"code":"invalid_parameter_error"},"id":"chatcmpl-6b6ccfe2-4d6f-92db-b866-3163ff8db948","request_id":"6b6ccfe2-4d6f-92db-b866-3163ff8db948"}', 'provider_name': 'Alibaba', 'is_byok': False}}, 'user_id': 'user_3FrVBkmFqVIuZ58dEh7AU8vhXUV'}
(empty output)
JSON Schema
Structured Output
Failure: Error code: 400 - {'error': {'message': 'Provider returned error', 'code': 400, 'metadata': {'raw': '{"error":{"message":"<400> InternalError.Algo.InvalidParameter: \'messages\' must contain the word \'json\' in some form, to use \'response_format\' of type \'json_object\'.","type":"invalid_request_error","param":null,"code":"invalid_parameter_error"},"id":"chatcmpl-94c1e47d-4e14-9360-bacd-21d230c5f7ee","request_id":"94c1e47d-4e14-9360-bacd-21d230c5f7ee"}', 'provider_name': 'Alibaba', 'is_byok': False}}, 'user_id': 'user_3FrVBkmFqVIuZ58dEh7AU8vhXUV'}
(empty output)
JSON Schema
Structured Output
Failure: Error code: 400 - {'error': {'message': 'Provider returned error', 'code': 400, 'metadata': {'raw': '{"error":{"message":"<400> InternalError.Algo.InvalidParameter: \'messages\' must contain the word \'json\' in some form, to use \'response_format\' of type \'json_object\'.","type":"invalid_request_error","param":null,"code":"invalid_parameter_error"},"id":"chatcmpl-4f06493c-fe82-9bc7-baad-e3b451326245","request_id":"4f06493c-fe82-9bc7-baad-e3b451326245"}', 'provider_name': 'Alibaba', 'is_byok': False}}, 'user_id': 'user_3FrVBkmFqVIuZ58dEh7AU8vhXUV'}
(empty output)
JSON Schema
Structured Output
Failure: Error code: 400 - {'error': {'message': 'Provider returned error', 'code': 400, 'metadata': {'raw': '{"error":{"message":"<400> InternalError.Algo.InvalidParameter: \'messages\' must contain the word \'json\' in some form, to use \'response_format\' of type \'json_object\'.","type":"invalid_request_error","param":null,"code":"invalid_parameter_error"},"id":"chatcmpl-e10b4340-932b-9390-a5c2-9f13fb958414","request_id":"e10b4340-932b-9390-a5c2-9f13fb958414"}', 'provider_name': 'Alibaba', 'is_byok': False}}, 'user_id': 'user_3FrVBkmFqVIuZ58dEh7AU8vhXUV'}
(empty output)
JSON Schema
Structured Output
Failure: Error code: 400 - {'error': {'message': 'Provider returned error', 'code': 400, 'metadata': {'raw': '{"error":{"message":"<400> InternalError.Algo.InvalidParameter: \'messages\' must contain the word \'json\' in some form, to use \'response_format\' of type \'json_object\'.","type":"invalid_request_error","param":null,"code":"invalid_parameter_error"},"id":"chatcmpl-6e2998d0-c1a4-9dfd-914a-6a23a5e99e23","request_id":"6e2998d0-c1a4-9dfd-914a-6a23a5e99e23"}', 'provider_name': 'Alibaba', 'is_byok': False}}, 'user_id': 'user_3FrVBkmFqVIuZ58dEh7AU8vhXUV'}
Invalid JSON. Output: The bad commit is **6b68d48** ("change port").
Reasoning: The test passed at `84b0d92` ("add default config") and failed starting at `6b68d48` ("change port"), and all subsequent commits (`7553f71`, `ae83667`) continued to fail. This means the bug was introduced by `6b68d48`, the first commit where the build broke.
JSON Schema
Structured Output
Structured Output Error
Failed to parse structured JSON response: Expecting value: line 1 column 1 (char 0)
Failure: Failed to parse structured JSON response: Expecting value: line 1 column 1 (char 0)
Invalid JSON. Output: The bad commit is **0f61a18** ("change port") — the first commit where tests fail, after both prior commits passed.
JSON Schema
Structured Output
Structured Output Error
Failed to parse structured JSON response: Expecting value: line 1 column 1 (char 0)
Failure: Failed to parse structured JSON response: Expecting value: line 1 column 1 (char 0)
Invalid JSON. Output: **Bad commit:** `74df37d` — "change port"
**Reasoning:**
This follows the same logic as `git bisect`. Testing from oldest to newest:
| Commit | Subject | Result |
|---|---|---|
| `52b7ea8` | Initial commit | PASS |
| `bb08b31` | add default config | PASS |
| `74df37d` | **change port** | **FAIL** ← first failure |
| `f226896` | add feature flag | FAIL |
| `80d3859` | add port constant | FAIL |
The build was passing through `bb08b31`, and the first commit that introduced the failure is `74df37d` ("change port"). All subsequent commits (`f226896`, `80d3859`) also fail, but that's expected — they inherit the breakage rather than causing it. The culprit is therefore **74df37d**, which makes sense intuitively as well, since a port change is exactly the kind of modification likely to break a build.
JSON Schema
Structured Output
Structured Output Error
Failed to parse structured JSON response: Expecting value: line 1 column 1 (char 0)
Failure: Failed to parse structured JSON response: Expecting value: line 1 column 1 (char 0)
Invalid JSON. Output: 1d40860{"commit":"1d40860"}
JSON Schema
Structured Output
Structured Output Error
Failed to parse structured JSON response: Extra data: line 1 column 2 (char 1)
Failure: Failed to parse structured JSON response: Extra data: line 1 column 2 (char 1)
Invalid JSON. Output: The first failing commit is **b4a978b** (subject: "change port").
Tests pass up through `b81afb0`, then fail starting at `b4a978b`, so that commit introduced the bug.
JSON Schema
Structured Output
Structured Output Error
Failed to parse structured JSON response: Expecting value: line 1 column 1 (char 0)
Failure: Failed to parse structured JSON response: Expecting value: line 1 column 1 (char 0)
Invalid JSON. Output: The build first fails at **ba7133d** (`change port`).
**Answer:** `ba7133d` (or `change port`)
JSON Schema
Structured Output
Structured Output Error
Failed to parse structured JSON response: Expecting value: line 1 column 1 (char 0)
Failure: Failed to parse structured JSON response: Expecting value: line 1 column 1 (char 0)
39dc92f
JSON Schema
Structured Output
(raw) {"commit": "39dc92f"}
Failure: Expected target hash/prefix or subject 'change port'
Invalid JSON. Output: **13d4031 — "change port"**
It's the first commit in history where tests fail; "add default config" passed, so this commit introduced the bug, and all later commits inherit it.
JSON Schema
Structured Output
Structured Output Error
Failed to parse structured JSON response: Expecting value: line 1 column 1 (char 0)
Failure: Failed to parse structured JSON response: Expecting value: line 1 column 1 (char 0)