fails:Thread#to_s returns a description including file and line number
fails:Thread#to_s has a binary encoding
fails:Thread#to_s can check it's own status
fails:Thread#to_s describes a running thread
fails:Thread#to_s describes a sleeping thread
fails:Thread#to_s describes a blocked thread
fails:Thread#to_s describes a completed thread
fails:Thread#to_s describes a killed thread
fails:Thread#to_s describes a thread with an uncaught exception
fails:Thread#to_s describes a dying sleeping thread
fails:Thread#to_s reports aborting on a killed thread
fails:Thread#to_s reports aborting on a killed thread after sleep
