Provide further information when LibFuzzerMonitor fails to

[pyoor]

When the LibFuzzerMonitor fails to init, we have very little insight into what caused it. We should include the most recent parsed lines in the output.

Job 0 terminated, processing results...
Process did not startup correctly, aborting... (1)
[Job 1] Received terminate request...
[Job 1] ==668== libFuzzer: run interrupted; exiting
[Job 2] Received terminate request...
[Job 2] ==670== libFuzzer: run interrupted; exiting
[Job 3] Received terminate request...
[Job 3] ==673== libFuzzer: run interrupted; exiting

guided-fuzzing-daemon/src/guided_fuzzing_daemon/libfuzzer.py

Line 584 in eeb20af

"Process did not startup correctly, aborting... (1)",