NXP-14845: cosmit
NXP-14848: FulltextUpdaterWork.IndexAndText must be Serializable
NXP-14849: fix NPE in logging after deserializing AbstractWork
NXP-14852: fix dependency
NXP-14845: Add a stack trace in trace mode
NXP-14847: make MemRepository thread-safe

Also remove rpop, which is not a safe operation (we don't know
what's going to be removed if there's a concurrent rpush).