fail on empty api response?

[gaborcsardi]

Error in response$text[[length(response$text)]] : 
  attempt to select less than one element in integerOneIndex
Call `rlang::last_error()` to see a backtrace
[master] > traceback()
    █
 1. └─rhub::check(platform = "ubuntu-rchk")
 2.   └─chk$livelog()
 3.     └─rhub:::check_livelog(self, private, which)
 4.       └─rhub:::make_streamer(private$ids_[[which]], make_status_parser)
 5.         └─base::grepl("^(Finished: ABORTED|Finished: ERROR)$", response$text[[length(response$text)]])