This is curious. I'm not seeing an error in the logs, and I wasn't able to reproduce locally (on main) with Postgres 17 and arm64. I'm going to try an amd64 build next. This is the command I used.

POSTGRES_VERSION=17 docker buildx bake --set '*.platform=linux/arm64' --load postgres

I wonder if this the build hitting a resource constraint of the worker.

In mostly unrelated news, public arm64 workers are here, though how to get the build to properly split across platforms and push to Dockerhub correctly is not trivial based on our previous attempts.
https://github.com/orgs/community/discussions/148648

Edit: example (complicated) workflow that does just that

one last idea, could try disabling ninja e.g. with DUCKDB_GEN=make make -j$(nproc). I had to do that for pgxman, though I don't remember the error that resulted in me doing so.

Closing this in favor of #578