run foo: DBG: cd '[TMP]'; PATH=[$PATH] foo.py arg1 arg2
run foo: DBG: [TMP]/stdout
run foo: DBG: [TMP]/stderr
run foo(pid=[PID]): Launched
stdout:
(launched: [DATETIME])
foo stdout
[[$0], 'arg1', 'arg2']

stderr:
(launched: [DATETIME])
foo stderr

run foo(pid=[PID]): Terminating (SIGINT)
run foo(pid=[PID]): DBG: Cleanup
run foo(pid=[PID]): Terminated {rc=42}
result: 42
stdout:
(launched: [DATETIME])
foo stdout
[[$0], 'arg1', 'arg2']
SIGINT received
Exiting (stdout)

stderr:
(launched: [DATETIME])
foo stderr
Exiting (stderr)

done.