malor@devstack:~/sandbox/boris$ testr run --parallel
running=seq 2
running=WORKER_ID=1 python -m subunit.run discover . --list 
running=WORKER_ID=1 python -m subunit.run discover .  --load-list /tmp/tmpimaOhX
running=WORKER_ID=2 python -m subunit.run discover .  --load-list /tmp/tmpw6PYwH
Hello from test_b() worker-1
Hello from test_a() worker-2
Ran 2 tests in 0.001s (-0.001s)
PASSED (id=5)
running=