Updates grab-queue: e6bcfe8 Rollback and minor fix

diff --git a/grab-queue b/grab-queue
index a005d2aa99a8be5b87d81935ff4ad6df400c2c46..e6bcfe8364968d3be47e97ee9f4a08a37caa7daf 160000 (submodule)
--- a/grab-queue
+++ b/grab-queue
@@ -1 +1 @@
-Subproject commit a005d2aa99a8be5b87d81935ff4ad6df400c2c46
+Subproject commit e6bcfe8364968d3be47e97ee9f4a08a37caa7daf