Update logs

src/py/flwr/cli/app.py

@@ -33,7 +33,6 @@
 )
 
 app.command()(new)
-app.command()(logs)
 app.command()(example)
 app.command()(run)
 app.command()(build)

src/py/flwr/superexec/exec_servicer.py

@@ -41,7 +41,7 @@ class ExecServicer(exec_pb2_grpc.ExecServicer):
 
     def __init__(self, plugin: Executor) -> None:
         self.plugin = plugin
-        self.runs: Dict[int, subprocess.Popen[str]] = {}
+        self.runs: Dict[int, Popen[str]] = {}
         self.logs = []
         self.lock = threading.Lock()
 
@@ -59,11 +59,12 @@ def StartRun(
 
     def _capture_logs(self, proc):
         select_timeout = 1.0
+
         def run():
             while True:
-                reads, _, _ = select.select([proc.stdout], [], [], select_timeout)
+                reads, _, _ = select.select([proc.stderr], [], [], select_timeout)
                 if reads:
-                    line = proc.stdout.readline()
+                    line = proc.stderr.readline()
                     if line:
                         self.logs.append(line.rstrip())