do not save latest stdlib

crates/rooch-framework-release/README.md

@@ -4,15 +4,15 @@ Rooch stdlib include the MoveOS standard library and Rooch framework.
 
 This crate is used to compile the moveos-stdlib and rooch-framework, and then generate the compiled Move bytecode, documentation, and error descriptions for use by the Move Explain tool.
 
-## Compile, check compatibility and save the latest stdlib 
+## Compile, check compatibility with previous version
 
 1. Compile 
 
 ```bash
 cargo run --package rooch-framework-release --bin rooch-framework-release
 ```
 
-This command will compile the moveos-stdlib and rooch-framework, and then check the compatibility with previous one (if exists), and finally save the new compiled stdlib.
+This command will compile the latest moveos-stdlib and rooch-framework, and then check the compatibility with previous one (if exists).
 
 ## Release a new version
 

crates/rooch-framework-release/src/main.rs

@@ -64,9 +64,13 @@ fn main() {
             assert_stdlib_compatibility(&curr_stdlib, &prev_stdlib);
         }
     }
-    curr_stdlib
-        .save_to_file(stdlib_output_file(&version.as_string()))
-        .unwrap();
+
+    // Only save the stdlib with given version number
+    if version != StdlibVersion::Latest {
+        curr_stdlib
+            .save_to_file(stdlib_output_file(&version.as_string()))
+            .unwrap();
+    }
 }
 
 /// Check whether the new stdlib is compatible with the old stdlib