librarian: cannot generate OpenAPI validation library for Rust #3936
Description
Using the current version of librarian on google-cloud-rust I get:
git -C ../librarian/ rev-parse HEAD
e20ee8818e0b971e21e74ac05f4c2a59f6df012c
go -C ../librarian/cmd/librarian build && ../librarian/cmd/librarian/librarian -f generate --all
2026/02/06 10:13:31 WARN mismatched body in additional binding (see AIP-127) message=.google.devtools.cloudbuild.v1.RunBuildTriggerRequest topLevelBody=source additionalBindingBody=*
2026/02/06 10:13:48 librarian: API testdata/secretmanager_openapi_v1.json is not in allowlist
and the generation fails.