plain OkHttp 4.12.0, 10 runs each, stub streaming 60 chunks at 20 ms, reader thread blocked in a read
  response.close() threw: java.lang.IllegalStateException: Unbalanced enter/exit
response.close() from another thread: upstream connection closed in 0 of 10 runs
call.cancel()     from another thread: upstream connection closed in 10 of 10 runs