Fix build.rs not exiting if make commands fail
Fix build.rs not exiting if make commands fail

rahulpalamuttam/weld,rahulpalamuttam/weld,sppalkia/weld,rahulpalamuttam/weld,rahulpalamuttam/weld,weld-project/weld,weld-project/weld,sppalkia/weld,rahulpalamuttam/weld,sppalkia/weld,weld-project/weld,sppalkia/weld,weld-project/weld,weld-project/weld,sppalkia/weld