cargo clean only if the compiler version is downgraded

Signed-off-by: Uncle Stinky <uncle.stinky@ghostchain.io>

scripts/starter.sh

@@ -98,6 +98,9 @@ downgrade_compiler_if_needed() {
         toolchain_name=$(rustup show | grep default | head -n 1 | cut -d' ' -f1)
         rustup target add wasm32-unknown-unknown --toolchain $toolchain_name
         rustup component add rust-src --toolchain $toolchain_name
+        cd $PROJECT_FOLDER
+        echo "[+] clean build cache..."
+        cargo clean
     else
         echo "[+] rustc compiler version is compatible"
     fi
@@ -226,8 +229,6 @@ if [[ $HARD_RESET = true ]]; then
     sudo rm -rf "$BASE_PATH/chains/casper_staging_testnet"
 
     cd $PROJECT_FOLDER
-    echo "[+] clean build cache..."
-    cargo clean
     echo "[+] starting build in 3 seconds..."
     sleep 3
     cargo build --release