diff --git a/clients/python/text_generation/client.py b/clients/python/text_generation/client.py
index 45301b63..0b60d93a 100644
--- a/clients/python/text_generation/client.py
+++ b/clients/python/text_generation/client.py
@@ -867,7 +867,7 @@ class AsyncClient:
         async with ClientSession(
             headers=self.headers, cookies=self.cookies, timeout=self.timeout
         ) as session:
-            async with session.post(self.base_url, json=request.dict()) as resp:
+            async with session.post(self.base_url, json=request.model_dump()) as resp:
                 payload = await resp.json()
 
                 if resp.status != 200:
diff --git a/integration-tests/conftest.py b/integration-tests/conftest.py
index 6f8aa715..2d3ae8a2 100644
--- a/integration-tests/conftest.py
+++ b/integration-tests/conftest.py
@@ -1,4 +1,5 @@
 # ruff: noqa: E402
+from _pytest.fixtures import SubRequest
 import requests
 
 
@@ -10,13 +11,13 @@ class SessionTimeoutFix(requests.Session):
 
 requests.sessions.Session = SessionTimeoutFix
 
+import warnings
 import asyncio
 import contextlib
 import json
 import math
 import os
 import random
-import shutil
 import subprocess
 import sys
 import tempfile
@@ -72,6 +73,16 @@ def pytest_collection_modifyitems(config, items):
             item.add_marker(skip_release)
 
 
+@pytest.fixture(autouse=True)
+def container_log(request: SubRequest):
+    error_log = request.getfixturevalue("error_log")
+    assert error_log is not None
+    yield
+    if request.session.testsfailed:
+        error_log.seek(0)
+        print(error_log.read(), file=sys.stderr)
+
+
 class ResponseComparator(JSONSnapshotExtension):
     rtol = 0.2
     ignore_logprob = False
@@ -278,8 +289,10 @@ class IgnoreLogProbResponseComparator(ResponseComparator):
 
 
 class LauncherHandle:
-    def __init__(self, port: int):
-        self.client = AsyncClient(f"http://localhost:{port}", timeout=30)
+    def __init__(self, port: int, error_log):
+        with warnings.catch_warnings(action="ignore"):
+            self.client = AsyncClient(f"http://localhost:{port}", timeout=30)
+        self.error_log = error_log
 
     def _inner_health(self):
         raise NotImplementedError
@@ -288,6 +301,8 @@ class LauncherHandle:
         assert timeout > 0
         for _ in range(timeout):
             if not self._inner_health():
+                self.error_log.seek(0)
+                print(self.error_log.read(), file=sys.stderr)
                 raise RuntimeError("Launcher crashed")
 
             try:
@@ -295,12 +310,14 @@ class LauncherHandle:
                 return
             except (ClientConnectorError, ClientOSError, ServerDisconnectedError):
                 time.sleep(1)
+        self.error_log.seek(0)
+        print(self.error_log.read(), file=sys.stderr)
         raise RuntimeError("Health check failed")
 
 
 class ContainerLauncherHandle(LauncherHandle):
-    def __init__(self, docker_client, container_name, port: int):
-        super(ContainerLauncherHandle, self).__init__(port)
+    def __init__(self, docker_client, container_name, port: int, error_log):
+        super().__init__(port, error_log)
         self.docker_client = docker_client
         self.container_name = container_name
 
@@ -310,8 +327,8 @@ class ContainerLauncherHandle(LauncherHandle):
 
 
 class ProcessLauncherHandle(LauncherHandle):
-    def __init__(self, process, port: int):
-        super(ProcessLauncherHandle, self).__init__(port)
+    def __init__(self, process, port: int, error_log):
+        super().__init__(port, error_log)
         self.process = process
 
     def _inner_health(self) -> bool:
@@ -334,14 +351,13 @@ def ignore_logprob_response_snapshot(snapshot):
 
 
 @pytest.fixture(scope="module")
-def event_loop():
-    loop = asyncio.get_event_loop()
-    yield loop
-    loop.close()
+def error_log():
+    with tempfile.TemporaryFile("w+") as tmp:
+        yield tmp
 
 
 @pytest.fixture(scope="module")
-def launcher(event_loop):
+async def launcher(error_log):
     @contextlib.contextmanager
     def local_launcher(
         model_id: str,
@@ -429,22 +445,19 @@ def launcher(event_loop):
         if attention is not None:
             env["ATTENTION"] = attention
 
-        with tempfile.TemporaryFile("w+") as tmp:
+            # with tempfile.TemporaryFile("w+") as tmp:
             # We'll output stdout/stderr to a temporary file. Using a pipe
             # cause the process to block until stdout is read.
-            with subprocess.Popen(
-                args,
-                stdout=tmp,
-                stderr=subprocess.STDOUT,
-                env=env,
-            ) as process:
-                yield ProcessLauncherHandle(process, port)
+        with subprocess.Popen(
+            args,
+            stdout=error_log,
+            stderr=subprocess.STDOUT,
+            env=env,
+        ) as process:
+            yield ProcessLauncherHandle(process, port, error_log=error_log)
 
-                process.terminate()
-                process.wait(60)
-
-                tmp.seek(0)
-                shutil.copyfileobj(tmp, sys.stderr)
+            process.terminate()
+            process.wait(60)
 
         if not use_flash_attention:
             del env["USE_FLASH_ATTENTION"]
@@ -578,8 +591,21 @@ def launcher(event_loop):
             shm_size="1G",
         )
 
+        def pipe():
+            for log in container.logs(stream=True):
+                log = log.decode("utf-8")
+                error_log.write(log)
+
+        # Start looping to pipe the logs
+        import threading
+
+        t = threading.Thread(target=pipe, args=())
+        t.start()
+
         try:
-            yield ContainerLauncherHandle(client, container.name, port)
+            yield ContainerLauncherHandle(
+                client, container.name, port, error_log=error_log
+            )
 
             if not use_flash_attention:
                 del env["USE_FLASH_ATTENTION"]
@@ -590,9 +616,6 @@ def launcher(event_loop):
             except NotFound:
                 pass
 
-            container_output = container.logs().decode("utf-8")
-            print(container_output, file=sys.stderr)
-
         finally:
             try:
                 container.remove()