$ ./python -c "
import _xxtestfuzz
data = open('/tmp/testcase', 'rb').read()
_xxtestfuzz.run(data)
"
<string>:3: ResourceWarning: unclosed file <_io.BufferedReader name='/tmp/testcase'>
ResourceWarning: Enable tracemalloc to get the object allocation traceback
Traceback (most recent call last):
  File "/home/stan/dev/cpython/Lib/ast.py", line 64, in literal_eval
    return _convert_literal(node_or_string)
  File "/home/stan/dev/cpython/Lib/ast.py", line 108, in _convert_literal
    return left + right
           ~~~~~^~~~~~~
OverflowError: int too large to convert to float
Aborted (core dumped)

$ ./python -c "
import _xxtestfuzz
data = open('/tmp/testcase', 'rb').read()
_xxtestfuzz.run(data)
"
<string>:3: ResourceWarning: unclosed file <_io.BufferedReader name='/tmp/testcase'>
ResourceWarning: Enable tracemalloc to get the object allocation traceback