timeouts on train schedules summaries

[Castavo]

What happened?

When launching the following code twice, the second call to /train_schedule/simulation_summary hangs indefinitely...

import json

import requests

EDITOAST_URL = "http://localhost:8090"
RAILJSON_PATH = "../osrd/tests/data/infras/small_infra/infra.json"
TRAIN_SCHEDULES_PATH = "1000_trains.json"

with open(RAILJSON_PATH) as f:
    small_infra = json.load(f)

# Load small infra
r = requests.post(f"{EDITOAST_URL}/infra/railjson?name=small_infra", json=small_infra)
r.raise_for_status()
infra_id = r.json()["infra"]

# Get a timetable with 1000 trains
with open(TRAIN_SCHEDULES_PATH) as f:
    timetable = json.load(f)

r = requests.post(f"{EDITOAST_URL}/timetable")
r.raise_for_status()
timetable_id = r.json()["timetable_id"]

r = requests.post(
    f"{EDITOAST_URL}/timetable/{timetable_id}/train_schedule", json=timetable
)
r.raise_for_status()
train_schedule_ids = [train_schedule["id"] for train_schedule in r.json()]
print(f"Got {len(train_schedule_ids)} train schedules")


# Call simulation summary
print(f"Calling for infra {infra_id}")
r = requests.post(f"{EDITOAST_URL}/infra/{infra_id}/load")
r.raise_for_status()

r = requests.post(
    f"{EDITOAST_URL}/train_schedule/simulation_summary",
    json={"infra_id": infra_id, "ids": train_schedule_ids},
)
r.raise_for_status()

Then the rabbitmq web interface shows that messages are stuck in queue

When checking, there are indeed messages stuck in the core-orphan queue.
Also, a core instance with the right infra id is present and healthy when calling docker ps

What did you expect to happen?

I expected the call to not freeze

How can we reproduce it (as minimally and precisely as possible)?

1. Get this python script (should be the same code as above)
2. Download the train schedules 1000_trains.json
3. Maybe update the paths in the file to suit yourself
4. docker compose up -d
5. Launch the script twice
6. Witness

On which environments the bug occurs?

Recette (SNCF), Local

On which browser the bug occurs?

Firefox

OSRD version (top right corner Account button > Informations)

13d0dd3

[flomonster]

Since #10594 has been merged can we reproduce this bug?