Fix tool build

src/Tools/run_cargo.sh

@@ -32,6 +32,11 @@ elif [ $2 = clean ]; then
   echo "cargo clean $1"
   $HOME/.cargo/bin/cargo clean
 
+  exit $?
+elif [ $2 = update ]; then
+  echo "cargo update $1"
+  $HOME/.cargo/bin/cargo update
+
   exit $?
 else
   echo "Unkown cargo command $2 for project $1"