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checkpoint

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Fabro 2026-03-16 01:33:41 -04:00
parent fb5022b806
commit a8ffb550f3
4 changed files with 40 additions and 10 deletions
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34
checkpoint.json
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@ -1,25 +1,28 @@
{
"timestamp": "2026-03-16T05:33:37.802643Z",
"current_node": "solve",
"timestamp": "2026-03-16T05:33:41.205524Z",
"current_node": "extract_patch",
"completed_nodes": [
"start",
"setup",
"solve"
"solve",
"extract_patch"
],
"node_retries": {
"start": 1,
"solve": 1,
"setup": 1
"extract_patch": 1,
"setup": 1,
"solve": 1
},
"context_values": {
"internal.thread_id": "setup",
"internal.thread_id": "solve",
"last_response": "The fix works correctly. The old regex with `^...$` incorrectly matched `'bad\\n'` (a username ending with a newline), while the new regex with `\\A...\\Z` properly rejects it. All valid usernames contin",
"thread.solve.current_node": "extract_patch",
"graph.goal": "UsernameValidator allows trailing newline in usernames\nDescription\n\t\nASCIIUsernameValidator and UnicodeUsernameValidator use the regex \nr'^[\\w.@+-]+$'\nThe intent is to only allow alphanumeric characters as well as ., @, +, and -. However, a little known quirk of Python regexes is that $ will also match a trailing newline. Therefore, the user name validators will accept usernames which end with a newline. You can avoid this behavior by instead using \\A and \\Z to terminate regexes. For example, the validator regex could be changed to\nr'\\A[\\w.@+-]+\\Z'\nin order to reject usernames that end with a newline.\nI am not sure how to officially post a patch, but the required change is trivial - using the regex above in the two validators in contrib.auth.validators.\n",
"current.preamble": "Goal: UsernameValidator allows trailing newline in usernames\nDescription\n\t\nASCIIUsernameValidator and UnicodeUsernameValidator use the regex \nr'^[\\w.@+-]+$'\nThe intent is to only allow alphanumeric characters as well as ., @, +, and -. However, a little known quirk of Python regexes is that $ will also match a trailing newline. Therefore, the user name validators will accept usernames which end with a newline. You can avoid this behavior by instead using \\A and \\Z to terminate regexes. For example, the validator regex could be changed to\nr'\\A[\\w.@+-]+\\Z'\nin order to reject usernames that end with a newline.\nI am not sure how to officially post a patch, but the required change is trivial - using the regex above in the two validators in contrib.auth.validators.\n\n\n## Completed stages\n- **setup**: fail\n - Script: `git clone https://github.com/django/django.git . && git checkout d26b2424437dabeeca94d7900b37d2df4410da0c && python -m pip install -e .`\n - Stdout:\n ```\n fatal: destination path '.' already exists and is not an empty directory.\n ```\n - Stderr: (empty)\n\n## Context\n- failure_class: deterministic\n- failure_signature: setup|deterministic|script failed with exit code: <n> ## stdout fatal: destination path '.' already exists and is not an empty directory.\n",
"current.preamble": "Goal: UsernameValidator allows trailing newline in usernames\nDescription\n\t\nASCIIUsernameValidator and UnicodeUsernameValidator use the regex \nr'^[\\w.@+-]+$'\nThe intent is to only allow alphanumeric characters as well as ., @, +, and -. However, a little known quirk of Python regexes is that $ will also match a trailing newline. Therefore, the user name validators will accept usernames which end with a newline. You can avoid this behavior by instead using \\A and \\Z to terminate regexes. For example, the validator regex could be changed to\nr'\\A[\\w.@+-]+\\Z'\nin order to reject usernames that end with a newline.\nI am not sure how to officially post a patch, but the required change is trivial - using the regex above in the two validators in contrib.auth.validators.\n\n\n## Completed stages\n- **setup**: fail\n - Script: `git clone https://github.com/django/django.git . && git checkout d26b2424437dabeeca94d7900b37d2df4410da0c && python -m pip install -e .`\n - Stdout:\n ```\n fatal: destination path '.' already exists and is not an empty directory.\n ```\n - Stderr: (empty)\n- **solve**: success\n - Model: claude-opus-4-6, 3.5k tokens in / 1.5k out\n - Files: /tmp/django_repo/django/contrib/auth/validators.py\n",
"internal.fidelity": "compact",
"internal.node_visit_count": 1,
"command.stderr": "",
"command.output": "fatal: destination path '.' already exists and is not an empty directory.\n",
"command.output": "",
"failure_signature": "",
"graph.rankdir": "LR",
"internal.retry_count.solve": 1,
@ -29,9 +32,10 @@
"response.solve": "The fix works correctly. The old regex with `^...$` incorrectly matched `'bad\\n'` (a username ending with a newline), while the new regex with `\\A...\\Z` properly rejects it. All valid usernames continue to match.\n\n**Summary of changes:** In `/tmp/django_repo/django/contrib/auth/validators.py`, changed the `regex` attribute in both `ASCIIUsernameValidator` and `UnicodeUsernameValidator` from `r'^[\\w.@+-]+$'` to `r'\\A[\\w.@+-]+\\Z'`. This replaces `^` and `$` anchors (which allow a trailing newline due to Python regex behavior) with `\\A` and `\\Z` anchors (which match only the absolute start and end of the string), preventing usernames with trailing newlines from being accepted.",
"last_stage": "solve",
"outcome": "success",
"internal.retry_count.extract_patch": 1,
"internal.retry_count.setup": 1,
"internal.run_id": "01KKTJ3AE7ZTCWABE6W5ZVRY4N",
"current_node": "solve",
"current_node": "extract_patch",
"thread.setup.current_node": "solve"
},
"logs": [],
@ -62,6 +66,15 @@
"status": "success",
"duration_ms": 0
},
"extract_patch": {
"status": "success",
"context_updates": {
"command.output": "",
"command.stderr": ""
},
"notes": "Script completed: git diff",
"duration_ms": 87
},
"setup": {
"status": "fail",
"context_updates": {
@ -75,12 +88,13 @@
"duration_ms": 83
}
},
"next_node_id": "extract_patch",
"next_node_id": "exit",
"loop_failure_signatures": {
"setup|deterministic|script failed with exit code: <n> ## stdout fatal: destination path '.' already exists and is not an empty directory.": 1
},
"node_visits": {
"solve": 1,
"extract_patch": 1,
"start": 1,
"setup": 1
}

5
nodes/extract_patch/script_invocation.json Normal file
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@ -0,0 +1,5 @@
{
"command": "git diff",
"language": "shell",
"timeout_ms": null
}

5
nodes/extract_patch/script_timing.json Normal file
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@ -0,0 +1,5 @@
{
"duration_ms": 86,
"exit_code": 0,
"timed_out": false
}

6
nodes/extract_patch/status.json Normal file
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@ -0,0 +1,6 @@
{
"status": "success",
"notes": "Script completed: git diff",
"failure_reason": null,
"timestamp": "2026-03-16T05:33:41.204915+00:00"
}