Can't run the simple example provided

[samohyes]

Thanks for your work! I come into some problems here.

So after I build the unicorn mode, it says this,
[+] Unicorn Python bindings installed successfully
[*] Testing unicorn-mode functionality by running a sample test harness under afl-unicorn
[-] Error: Unicorn mode doesn't seem to work!

And for the simple mode you provided, it gave me this.
orlog@hero:~/Documents/afl-unicorn/unicorn_mode/samples/simple$ afl-fuzz -U -m none -i sample_inputs/ -o results/ -- python simple_test_harness.py @@
afl-fuzz 2.52b by [e-mail]
[+] You have 4 CPU cores and 2 runnable tasks (utilization: 50%).
[+] Try parallel jobs - see /usr/local/share/doc/afl/parallel_fuzzing.txt.
[] Checking CPU core loadout...
[+] Found a free CPU core, binding to #0.
[] Checking core_pattern...
[] Checking CPU scaling governor...
[] Setting up output directories...
[] Scanning 'sample_inputs/'...
[+] No auto-generated dictionary tokens to reuse.
[] Creating hard links for all input files...
[] Validating target binary...
[] Attempting dry run with 'id:000000,orig:sample1.bin'...
[*] Spinning up the fork server...

[-] Hmm, looks like the target binary terminated before we could complete a
handshake with the injected code. Perhaps there is a horrible bug in the
fuzzer. Poke [e-mail] for troubleshooting tips.

[-] PROGRAM ABORT : Fork server handshake failed
Location : init_forkserver(), afl-fuzz.c:2258
I tested this on ubuntu 16.04. Can you give me some advice?

[samohyes]

I see. I have to use a fresh new ubuntu 16.04.

[waveburst]

Hi all,
I've got exact same error on my Ubuntu 16.04.5 machine. Anyone know why it's append? Can you please explain how can I get the example to work?

Thanks,
Gal.

Edit:
Alright, I managed to get the example to work on 16.04.0. Is there a way to run it on the latest 16.04.05? does any understand why it is not working?

[XiaoxiongWang]

I've same error on my Ubuntu 16.04.5 machine.

[cjc]

I've same error on my Ubuntu 20.04.3 LTS machine.

[shandianchengzi]

I've same error on my Ubuntu 18.04.6 LTS machine and my Ubuntu 16.04.6 machine.

Edit: I finished it inspired by #17. Just re-execute unicorn_mode/build_unicorn_support.sh and find that [-] Error: Python setup-tools not found. Run 'sudo apt-get install python-setuptools'., then install with the orders as followed:

wget --no-check-certificat https://pypi.python.org/packages/source/s/setuptools/setuptools-2.0.tar.gz
tar zxf setuptools-2.0.tar.gz
cd setuptools-2.0
sudo python2.7 setup.py install