set backtrace

Author: tgross35

.github/workflows/check-binary-size.yml

@@ -13,6 +13,7 @@ on:
 # Both the "measure" and "report" jobs need to know this.
 env:
   SIZE_DATA_DIR: sizes
+  RUST_BACKTRACE: 1
 
 # Responsibility is divided between two jobs "measure" and "report", so that the
 # job that builds (and potentnially runs) untrusted code does not have PR write