indexers: remove Sync requirement from AnyResolver

src/indexers/any.rs

@@ -22,7 +22,6 @@
 // limitations under the License.
 
 use std::collections::HashMap;
-use std::sync::Arc;
 
 use bp::Tx;
 use bpstd::Network;
@@ -45,15 +44,15 @@ pub trait RgbResolver: Send {
 #[derive(From)]
 #[non_exhaustive]
 pub struct AnyResolver {
-    inner: Arc<dyn RgbResolver + Sync>,
+    inner: Box<dyn RgbResolver>,
     terminal_txes: HashMap<Txid, Tx>,
 }
 
 impl AnyResolver {
     #[cfg(feature = "electrum_blocking")]
     pub fn electrum_blocking(url: &str, config: Option<electrum::Config>) -> Result<Self, String> {
         Ok(AnyResolver {
-            inner: Arc::new(
+            inner: Box::new(
                 electrum::Client::from_config(url, config.unwrap_or_default())
                     .map_err(|e| e.to_string())?,
             ),
@@ -64,7 +63,7 @@ impl AnyResolver {
     #[cfg(feature = "esplora_blocking")]
     pub fn esplora_blocking(url: &str, config: Option<esplora::Config>) -> Result<Self, String> {
         Ok(AnyResolver {
-            inner: Arc::new(
+            inner: Box::new(
                 esplora::BlockingClient::from_config(url, config.unwrap_or_default())
                     .map_err(|e| e.to_string())?,
             ),
@@ -75,7 +74,7 @@ impl AnyResolver {
     #[cfg(feature = "mempool_blocking")]
     pub fn mempool_blocking(url: &str, config: Option<esplora::Config>) -> Result<Self, String> {
         Ok(AnyResolver {
-            inner: Arc::new(super::mempool_blocking::MemPoolClient::new(
+            inner: Box::new(super::mempool_blocking::MemPoolClient::new(
                 url,
                 config.unwrap_or_default(),
             )?),