fix(helper): box envelope verification errors

helper/src/main.rs

@@ -2869,15 +2869,15 @@ mod pacman_envelope_tests {
 fn verify_envelope(
     envelope_file: &str,
     now: i64,
-) -> Result<MutationEnvelope, (Option<MutationEnvelope>, Denial)> {
-    let envelope = read_envelope_from_file(envelope_file).map_err(|d| (None, d))?;
+) -> Result<MutationEnvelope, Box<(Option<MutationEnvelope>, Denial)>> {
+    let envelope = read_envelope_from_file(envelope_file).map_err(|d| Box::new((None, d)))?;
 
     // Evaluate the denial before moving the envelope into the return — every
     // detail string reads from it.
     macro_rules! deny {
         ($d:expr) => {{
             let denial = $d;
-            return Err((Some(envelope), denial));
+            return Err(Box::new((Some(envelope), denial)));
         }};
     }
 
@@ -3048,7 +3048,7 @@ fn run_envelope(envelope_file: &str, now: i64) -> (Option<MutationEnvelope>, Den
                 ),
             )
         }
-        Err(result) => result,
+        Err(result) => *result,
     }
 }
 
@@ -3256,7 +3256,8 @@ fn run_execute_envelope_cli(args: &[String]) -> i32 {
                 )
             }
         },
-        Err((envelope, denial)) => {
+        Err(result) => {
+            let (envelope, denial) = *result;
             let decision = if denial.code == EXIT_EXEC_FAILED {
                 "failed"
             } else {