: GitBench

f006 — merge_conflicts

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← merge_conflicts
Multi-line hunk: config block conflict
Tests ability to resolve a configuration block merge conflict with port and host changes. Evaluates infrastructure-merge judgment.
medium merge-conflict config infrastructure resolution
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.

  1. 01 git init
  2. 02 git config user.email 'test@test.com'
  3. 03 git config user.name 'Test User'
  4. 04 printf 'server: port: 8080 host: localhost' > config.yaml
  5. 05 git add config.yaml
  6. 06 git commit -m 'Initial config'
  7. 07 git checkout -b prod
  8. 08 printf 'server: port: 443 host: localhost' > config.yaml
  9. 09 git add config.yaml
  10. 10 git commit -m 'Use HTTPS port'
  11. 11 git checkout main
  12. 12 printf 'server: port: 8080 host: 0.0.0.0' > config.yaml
  13. 13 git add config.yaml
  14. 14 git commit -m 'Listen on all interfaces'
  15. 15 git merge prod
Prompt
Resolve the merge conflict in config.yaml. The base had port: 8080 and host: localhost. Branch A changed port to 443 (HTTPS) keeping localhost. Branch B kept port 8080 but changed host to 0.0.0.0. Provide ONLY the resolved file content.
Expected
server: port: 443 host: 0.0.0.0
Campaign Evidence
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Model Outputs (14)
deepseek/deepseek-v4-flash:high PASS 100% 123 in → 239 out (213 reasoning)
server: port: 443 host: 0.0.0.0
deepseek/deepseek-v4-flash:none PASS 100% 123 in → 26 out (0 reasoning)
```yaml server: port: 443 host: 0.0.0.0 ```
deepseek/deepseek-v4-flash:none__json_schema PASS 100% 123 in → 31 out (0 reasoning)
server: port: 443 host: 0.0.0.0
JSON Schema Structured Output
(raw) { "resolved_content": "server:\n port: 443\n host: 0.0.0.0" }
mistralai/devstral-2512 PASS 100% 130 in → 27 out
```yaml server: port: 443 host: 0.0.0.0 ```
mistralai/devstral-2512__json_schema PASS 100% 130 in → 30 out
server: port: 443 host: 0.0.0.0
JSON Schema Structured Output
(raw) {"resolved_content": "server:\n port: 443\n host: 0.0.0.0"}
poolside/laguna-xs.2:high PASS 100% 174 in → 554 out (529 reasoning)
server: port: 443 host: 0.0.0.0
poolside/laguna-xs.2:high__json_schema PASS 100% 174 in → 196 out (165 reasoning)
server: port: 443 host: 0.0.0.0
JSON Schema Structured Output
(raw) {"resolved_content": "server:\n port: 443\n host: 0.0.0.0\n"}
poolside/laguna-xs.2:none PASS 100% 174 in → 29 out (0 reasoning)
```yaml server: port: 443 host: 0.0.0.0 ```
poolside/laguna-xs.2:none__json_schema PASS 100% 174 in → 29 out (0 reasoning)
server: port: 443 host: 0.0.0.0
JSON Schema Structured Output
(raw) {"resolved_content": "server:\n port: 443\n host: 0.0.0.0"}
deepseek/deepseek-v4-flash:high__json_schema FAIL 0%
Invalid JSON. Output: server: port: 443 host: 0.0.0.0
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)
nvidia/nemotron-3-nano-30b-a3b:high FAIL 0% 143 in → 32,768 out (26 reasoning)
(empty output)
Failure: Expected 'server: port: 443 host: 0.0.0.0 ', got ''
nvidia/nemotron-3-nano-30b-a3b:high__json_schema FAIL 0% 143 in → 668 out (637 reasoning)
server:\n port: 443\n host: localhost
JSON Schema Structured Output
(raw) { "resolved_content": "server:\\n port: 443\\n host: localhost" }
Failure: Expected 'server: port: 443 host: 0.0.0.0 ', got 'server:\n port: 443\n host: localhost'
nvidia/nemotron-3-nano-30b-a3b:none FAIL 0% 143 in → 19 out (0 reasoning)
--- config.yaml server: port: 443 host: localhost
Failure: Expected 'server: port: 443 host: 0.0.0.0 ', got '--- config.yaml server: port: 443 host: localhost'
nvidia/nemotron-3-nano-30b-a3b:none__json_schema FAIL 0% 143 in → 26 out (0 reasoning)
server: port: 443 host: localhost
JSON Schema Structured Output
(raw) { "resolved_content": "server:\n port: 443\n host: localhost" }
Failure: Expected 'server: port: 443 host: 0.0.0.0 ', got 'server: port: 443 host: localhost'