The DB dependency is missing on Windows, yet the the build didn’t fail despite having errors. I can try to track down the issue later, but just post it here to see if anyone understands what’s going on. https://github.com/racket/racket/runs/1565805759 2020-12-16T19:07:48.6534681Z standard-module-name-resolver: collection not found 2020-12-16T19:07:48.6536709Z for module path: (lib "tests/db/all-tests") 2020-12-16T19:07:48.6538033Z collection: "tests/db" EDIT: Actually there are more test failures Section(submodule) ERROR: make-directory: cannot make directory path: C:\Users\RUNNER~1\AppData\Local\Temp\submodule-tests-"16081454311608145431924" system error: Invalid argument; errno=22 The log then continues with the contract tests: Section(submodule) ERROR: make-directory: cannot make directory path: C:\Users\RUNNER~1\AppData\Local\Temp\submodule-tests-"16081454311608145431924" system error: Invalid argument; errno=22 FINISHED any-and-none.rkt FINISHED arrow-d.rkt ... Does this mean the core tests did not even finish?