test-serve: let run-tests.py kill the daemons
If the daemons die while the tests are still running, we'll get additional
"killed!" messages, making the test fail.
abort: repository a not found!
255
abort: error: Connection refused
255
abort: repository a not found!
255
abort: destination '../a' already exists
255
abort: repository a not found!
255
destination directory: q
abort: destination 'q' already exists