Make QuerierWrapper/Deps non-Copy

CHANGELOG.md

@@ -14,6 +14,10 @@ and this project adheres to
   support longer address formats than bech32.
 - cosmwasm-std: Make `CustomQuery` a subtrait of `Clone`, i.e. types that
   implement `CustomQuery` need to be `Clone`able.
+- cosmwasm-std: Remove `Copy` implementation from `QuerierWrapper` and `Deps`
+  which is not derived for custom non-`Copy` query type `C`. Both types are too
+  complex to guarantee `Copy` conformance long term, even if they are cheap to
+  clone right now.
 
 ### Removed
 

packages/std/src/deps.rs

@@ -17,7 +17,7 @@ pub struct DepsMut<'a> {
     pub querier: QuerierWrapper<'a>,
 }
 
-#[derive(Copy, Clone)]
+#[derive(Clone)]
 pub struct Deps<'a> {
     pub storage: &'a dyn Storage,
     pub api: &'a dyn Api,
@@ -47,15 +47,15 @@ impl<'a> DepsMut<'a> {
         Deps {
             storage: self.storage,
             api: self.api,
-            querier: self.querier,
+            querier: self.querier.clone(),
         }
     }
 
     pub fn branch(&'_ mut self) -> DepsMut<'_> {
         DepsMut {
             storage: self.storage,
             api: self.api,
-            querier: self.querier,
+            querier: self.querier.clone(),
         }
     }
 }
@@ -74,7 +74,7 @@ mod tests {
     fn execute2(_deps: DepsMut) {}
 
     fn query(deps: Deps) {
-        query2(deps);
+        query2(deps.clone());
         query2(deps);
     }
     fn query2(_deps: Deps) {}

packages/std/src/traits.rs

@@ -134,7 +134,7 @@ pub trait Querier {
     fn raw_query(&self, bin_request: &[u8]) -> QuerierResult;
 }
 
-#[derive(Copy, Clone)]
+#[derive(Clone)]
 pub struct QuerierWrapper<'a>(&'a dyn Querier);
 
 /// This allows us to use self.raw_query to access the querier.