Fail the script if duplicate deps found

Author: nyonson

ci/run_task.sh

@@ -298,7 +298,7 @@ do_dup_deps() {
 
     if [ "$duplicate_dependencies" -ne 0 ]; then
         cargo tree  --target=all --all-features --duplicates
-        say_err "Dependency tree is broken, contains duplicates"
+        err "Dependency tree is broken, contains duplicates"
     fi
 
     set -o pipefail