Old toolchain gives zeroize error on cloning

contract/src/errors.rs

@@ -7,8 +7,8 @@ pub enum Error {
     ThresholdViolation = 3,
     MaxKeysLimit = 4,
     DuplicateKey = 5,
-    KeyManagementThresholdError = 6,
-    DeploymentThresholdError = 7,
+    KeyManagementThreshold = 6,
+    DeploymentThreshold = 7,
     InsufficientTotalWeight = 8,
     MissingArgument0 = 20,
     MissingArgument1 = 21,

contract/src/main.rs

@@ -115,8 +115,8 @@ fn update_key_weight(account: AccountHash, weight: Weight) {
 fn set_threshold(permission_level: ActionType, threshold: Weight) -> Result<(), Error> {
     match account::set_action_threshold(permission_level, threshold) {
         Ok(()) => Ok(()),
-        Err(SetThresholdFailure::KeyManagementThreshold) => Err(Error::KeyManagementThresholdError),
-        Err(SetThresholdFailure::DeploymentThreshold) => Err(Error::DeploymentThresholdError),
+        Err(SetThresholdFailure::KeyManagementThreshold) => Err(Error::KeyManagementThreshold),
+        Err(SetThresholdFailure::DeploymentThreshold) => Err(Error::DeploymentThreshold),
         Err(SetThresholdFailure::PermissionDeniedError) => Err(Error::PermissionDenied),
         Err(SetThresholdFailure::InsufficientTotalWeight) => Err(Error::InsufficientTotalWeight),
     }

rust-toolchain

@@ -1 +1 @@
-nightly-2020-12-16
+nightly-2021-06-17