The generator was calling a binary of the wrong architecture and failing
internally, but passing the build (incorrectly). Explode right away.
Signed-off-by: Austin Schuh <austin.linux@gmail.com>
This removes a build dependency on the quickbuf generator being available for the build platform.
It's safe to generate Java because the quickbuf version is defined by the project.
C++ protobufs can't be committed because the protoc version must
match the library version (this is a particular issue for cmake builds).
