fix: dev: be sure to catch error.

bin/compose-core

@@ -3912,8 +3912,8 @@ if [ "$full_init" ]; then
     ## Get relations
     if [ -z "$no_relations" ]; then
         if [ "${#rebuild_relations_to_service[@]}" != 0 ]; then
-            rebuild_relations_to_service=(
-                $(get_master_services "${rebuild_relations_to_service[@]}"))
+            rebuild_relations_to_service=$(get_master_services "${rebuild_relations_to_service[@]}") || return 1
+            rebuild_relations_to_service=($rebuild_relations_to_service)
             project=$(get_default_project_name) || return 1
             for service in "${rebuild_relations_to_service[@]}"; do
                 for dir in "$VARDIR/relations/$project/"*"-${service}/"*; do