Mastra
- Expected changes
- 10
- Regression
- 1
- Time to fix
- 247hours
A Persistence Fix Skipped Final Processors
Failed turns could bypass output handling and persistence behavior configured for the stream.
Read the Case FileProduct evidence
Regression Case Files
Confirmed open-source regressions, replayed with Early and verified against upstream evidence.
Conan
- Expected changes
- 8
- Regression
- 1
- Time to fix
- ~20hours
A Valid No-Op Became a Build Failure
A valid no-op replacement could raise a false pattern-not-found exception and stop a Conan recipe build.
Read the Case FilePydantic AI
- Expected changes
- 5
- Regression
- 1
- Time to fix
- 28days
A Pydantic AI Regression Inside a 47-File Fix
A streaming handler that returned early could leave an agent run with an incomplete or empty response.
Read the Case FileRspack
- Expected changes
- 4
- Regression
- 1
- Time to fix
- ~18hours
The Build Passed. The Import Failed.
Production optimization could remove a valid CommonJS default export, causing consumers' default imports to resolve to undefined at runtime.
Read the Case FileHono
- Expected changes
- 6
- Regression
- 1
- Time to fix
- 12days
A Valid Form Request Returned Corrupted Fields
A valid form request could fail with HTTP 500 or return HTTP 200 with corrupted fields.
Read the Case FileHow a replay becomes a Case File
Every published case follows the same evidence path.
- 1
Select the release window
Start with a confirmed regression and compare the last known-good release with the affected release.
- 2
Run Early
Analyze the repository changes without providing the later issue or fix as the expected answer.
- 3
Reproduce the behavior
Execute a focused reproduction across the known-good, affected, and fixed versions.
- 4
Match the evidence
Compare Early's finding with the public issue, introducing change, and upstream fix.
Remember your last regression? Let Early trace it.
Use a release your team already understands to evaluate what Early finds.
