15.2 Canary Breaks Tests - Cannot Read BuildId

[columk1]

The problem

Latest canary release breaks tests for API routes. I understand canary is unstable but I'm sharing in case it's helpful. Please close if not relevant.

This is the error:

"TypeError: Cannot read properties of undefined (reading 'buildId') at AppRouteRouteModule.handle"

Reproduction steps

Here's a simple reproduction:
https://stackblitz.com/edit/stackblitz-starters-fzzan9n5?file=package.json

1. Run npx vitest
2. See error "TypeError: Cannot read properties of undefined (reading 'buildId') at AppRouteRouteModule.handle"
3. Revert from next@canary(15.2.0-canary.28) to next 15.1.6 and the test works.

Additional context

In my project, I also get an error about console.error being called, which happens even if console.error is mocked.

Error: vitest-fail-on-console > Expected test not to call console.error().
If the error is expected, test for it explicitly by mocking it out using:
vi.spyOn(console, 'error').mockImplementation(() => {})
and test that the warning occurs.

TypeError: Cannot read properties of undefined (reading 'buildId')
at AppRouteRouteModule.handle

[Xunnamius]

Thanks for the heads up! I'll take a look at this