diff --git a/acbu_escrow/src/lib.rs b/acbu_escrow/src/lib.rs
index 262ee5a..b78b211 100644
--- a/acbu_escrow/src/lib.rs
+++ b/acbu_escrow/src/lib.rs
@@ -216,7 +216,7 @@ impl Escrow {
 
         // CEI: write state before the external token transfer so any token-level
         // callback observes the escrow as already recorded.
-        env.storage()
+       env.storage()
             .temporary()
             .set(&key, &(payer.clone(), payee.clone(), amount, expiry));
 
diff --git a/build.rs b/build.rs
index d1730e7..ff88564 100644
--- a/build.rs
+++ b/build.rs
@@ -122,9 +122,10 @@ fn verify_source_hashes() {
             }
             Err(e) => {
                 eprintln!(
-                    "cargo:warning=Could not read {} for hash check: {}",
+                    "error[build]: Could not read {} for hash check: {}",
                     path, e
                 );
+                process::exit(1);
             }
         }
     }