CI Flake: Abandoning Parent test

[asmacdo]

=================================== FAILURES ===================================
__________________________ test_abandoning_parent[1] ___________________________

temp_output_dir = '/tmp/pytest-of-runner/pytest-0/test_abandoning_parent_1_0/'
num_children = 1

@pytest.mark.parametrize("num_children", [1, 2, 10])
def test_abandoning_parent(temp_output_dir: str, num_children: int) -> None:
    duct_prefix = f"{temp_output_dir}log_"
    command = f"duct --s-i 0.001 --r-i 0.01 -p {duct_prefix} {ABANDONING_PARENT} {num_children} sleep 0.2"
    subprocess.check_output(command, shell=True)

    with open(f"{duct_prefix}usage.json") as usage_file:
        all_samples = [json.loads(line) for line in usage_file]

    all_pids = set(chain.from_iterable(sample["processes"] for sample in all_samples))

    # 1 for each child, 1 for pstree, 1 for parent

  assert len(all_pids) == num_children + 2

E AssertionError: assert 4 == (1 + 2)
E + where 4 = len({'2626', '2627', '2633', '2635'})

test/test_e2e.py:28: AssertionError
----------------------------- Captured stderr call -----------------------------
2025-02-27T19:58:39+0000 [INFO ] con-duct: duct is executing '/home/runner/work/duct/duct/test/data/abandoning_parent.sh 1 sleep 0.2'...
2025-02-27T19:58:39+0000 [INFO ] con-duct: Log files will be written to /tmp/pytest-of-runner/pytest-0/test_abandoning_parent_1_0/log_
2025-02-27T19:58:39+0000 [INFO ] con-duct: Summary:
Exit Code: 0
Command: /home/runner/work/duct/duct/test/data/abandoning_parent.sh 1 sleep 0.2
Log files location: /tmp/pytest-of-runner/pytest-0/test_abandoning_parent_1_0/log_
Wall Clock Time: 0.254 sec
Memory Peak Usage (RSS): 7.3 MB
Memory Average Usage (RSS): 6.7 MB
Virtual Memory Peak Usage (VSZ): 20.4 MB
Virtual Memory Average Usage (VSZ): 18.6 MB
Memory Peak Percentage: 0.00%
Memory Average Percentage: 0.00%
CPU Peak Usage: 0.00%
Average CPU Usage: 0.00%

=========================== short test summary info ============================
FAILED test/test_e2e.py::test_abandoning_parent[1] - AssertionError: assert 4 == (1 + 2)

• where 4 = len({'2626', '2627', '2633', '2635'})
  ======================== 1 failed, 196 passed in 37.83s ========================
  py: exit 1 (39.01 seconds) /home/runner/work/duct/duct> pytest -vv --cov-report=xml test pid=2533
  py: FAIL code 1 (102.58=setup[63.57]+cmd[39.01] seconds)
  evaluation failed :( (102.84 seconds)