We are currently solving the following issue within our repository. Here is the issue text:
--- BEGIN ISSUE ---
Job resubmission with job scheduler doesn't work 
I was not able to find out the reason behind resubmission issue with job scheduler, such as:
`veros-resubmit -i acc.lowres -n 50 -l 62208000 -c "python acc.py -b bohrium -v debug" --callback "/usr/bin/sbatch /groups/ocean/nutrik/veros_cases/paper/acc/veros_batch.sh"`
Although jobs with run length of up to 29 days are resubmitted fine, those with longer run length are not resubmitted and no errors or messages are reported.

In fact, jobs are successfully resubmitted without scheduler (`--callback "./veros_batch.sh"`) for any run length.

--- END ISSUE ---

Below are some code segments, each from a relevant file. One or more of these files may contain bugs.
--- BEGIN FILES ---
Path: `veros/cli/veros_resubmit.py`
Content:
```
1 #!/usr/bin/env python
2 
3 import functools
4 import subprocess
5 import shlex
6 import sys
7 import os
8 
9 import click
10 
11 LAST_N_FILENAME = "{identifier}.current_run"
12 
13 
14 class ShellCommand(click.ParamType):
15     name = "command"
16 
17     def convert(self, value, param, ctx):
18         return shlex.split(value)
19 
20 
21 def get_current_n(filename):
22     if not os.path.isfile(filename):
23         return 0
24 
25     with open(filename, "r") as f:
26         return int(f.read())
27 
28 
29 def write_next_n(n, filename):
30     with open(filename, "w") as f:
31         f.write(str(n))
32 
33 
34 def call_veros(cmd, name, n, runlen):
35     identifier = "{name}.{n:0>4}".format(name=name, n=n)
36     prev_id = "{name}.{n:0>4}".format(name=name, n=n - 1)
37     args = ["-s", "identifier", identifier, "-s", "restart_output_filename",
38             "{identifier}.restart.h5", "-s", "runlen", "{}".format(runlen)]
39     if n:
40         args += ["-s", "restart_input_filename", "{prev_id}.restart.h5".format(prev_id=prev_id)]
41     sys.stdout.write("\n >>> {}\n\n".format(" ".join(cmd + args)))
42     sys.stdout.flush()
43     try:
44         subprocess.check_call(cmd + args)
45     except subprocess.CalledProcessError:
46         raise RuntimeError("Run {} failed, exiting".format(n))
47 
48 
49 def resubmit(identifier, num_runs, length_per_run, veros_cmd, callback):
50     """Performs several runs of Veros back to back, using the previous run as restart input.
51 
52     Intended to be used with scheduling systems (e.g. SLURM or PBS).
53 
54     """
55     last_n_filename = LAST_N_FILENAME.format(identifier=identifier)
56 
57     current_n = get_current_n(last_n_filename)
58     if current_n >= num_runs:
59         return
60 
61     call_veros(veros_cmd, identifier, current_n, length_per_run)
62     write_next_n(current_n + 1, last_n_filename)
63     subprocess.Popen(callback)
64 
65 
66 @click.command("veros-resubmit", short_help="Re-run a Veros setup several times")
67 @click.option("-i", "--identifier", required=True,
68               help="Base identifier of the simulation")
69 @click.option("-n", "--num-runs", type=click.INT, required=True,
70               help="Total number of runs to execute")
71 @click.option("-l", "--length-per-run", type=click.FLOAT, required=True,
72               help="Length (in seconds) of each run")
73 @click.option("-c", "--veros-cmd", type=ShellCommand(), required=True,
74               help="The command that is used to call veros (quoted)")
75 @click.option("--callback", metavar="CMD", type=ShellCommand(), default=None,
76               help="Command to call after each run has finished (quoted, default: call self)")
77 @functools.wraps(resubmit)
78 def cli(*args, **kwargs):
79     if kwargs["callback"] is None:
80         kwargs["callback"] = sys.argv
81     resubmit(*args, **kwargs)
82 
83 
84 if __name__ == "__main__":
85     cli()
86
```
--- END FILES ---

Please first localize the bug based on the issue statement, and then generate a patch according to the `git diff` format fenced by three backticks.

Here is an example:

```diff
diff --git a/examples/server_async.py b/examples/server_async.py
--- a/examples/server_async.py
+++ b/examples/server_async.py
@@ -313,4 +313,4 @@
 
 
 if __name__ == "__main__":
-    asyncio.run(run_async_server("."), debug=True)
+    asyncio.run(run_async_server(), debug=True)
diff --git a/examples/server_sync.py b/examples/server_sync.py
--- a/examples/server_sync.py
+++ b/examples/server_sync.py
@@ -313,5 +313,5 @@
 
 
 if __name__ == "__main__":
-    server = run_sync_server(".")
+    server = run_sync_server()
     server.shutdown()

```

diff --git a/veros/cli/veros_resubmit.py b/veros/cli/veros_resubmit.py
--- a/veros/cli/veros_resubmit.py
+++ b/veros/cli/veros_resubmit.py
@@ -5,10 +5,13 @@
 import shlex
 import sys
 import os
+import time
 
 import click
 
 LAST_N_FILENAME = "{identifier}.current_run"
+CHILD_TIMEOUT = 10
+POLL_DELAY = 0.1
 
 
 class ShellCommand(click.ParamType):
@@ -60,7 +63,21 @@
 
     call_veros(veros_cmd, identifier, current_n, length_per_run)
     write_next_n(current_n + 1, last_n_filename)
-    subprocess.Popen(callback)
+    next_proc = subprocess.Popen(callback)
+
+    # catch immediately crashing processes
+    timeout = CHILD_TIMEOUT
+
+    while timeout > 0:
+        retcode = next_proc.poll()
+        if retcode is not None:
+            if retcode > 0:
+                # process crashed
+                raise RuntimeError("Callback exited with {}".format(retcode))
+            else:
+                break
+        time.sleep(POLL_DELAY)
+        timeout -= POLL_DELAY
 
 
 @click.command("veros-resubmit", short_help="Re-run a Veros setup several times")
@@ -78,6 +95,7 @@
 def cli(*args, **kwargs):
     if kwargs["callback"] is None:
         kwargs["callback"] = sys.argv
+
     resubmit(*args, **kwargs)

{"golden_diff": "diff --git a/veros/cli/veros_resubmit.py b/veros/cli/veros_resubmit.py\n--- a/veros/cli/veros_resubmit.py\n+++ b/veros/cli/veros_resubmit.py\n@@ -5,10 +5,13 @@\n import shlex\n import sys\n import os\n+import time\n \n import click\n \n LAST_N_FILENAME = \"{identifier}.current_run\"\n+CHILD_TIMEOUT = 10\n+POLL_DELAY = 0.1\n \n \n class ShellCommand(click.ParamType):\n@@ -60,7 +63,21 @@\n \n     call_veros(veros_cmd, identifier, current_n, length_per_run)\n     write_next_n(current_n + 1, last_n_filename)\n-    subprocess.Popen(callback)\n+    next_proc = subprocess.Popen(callback)\n+\n+    # catch immediately crashing processes\n+    timeout = CHILD_TIMEOUT\n+\n+    while timeout > 0:\n+        retcode = next_proc.poll()\n+        if retcode is not None:\n+            if retcode > 0:\n+                # process crashed\n+                raise RuntimeError(\"Callback exited with {}\".format(retcode))\n+            else:\n+                break\n+        time.sleep(POLL_DELAY)\n+        timeout -= POLL_DELAY\n \n \n @click.command(\"veros-resubmit\", short_help=\"Re-run a Veros setup several times\")\n@@ -78,6 +95,7 @@\n def cli(*args, **kwargs):\n     if kwargs[\"callback\"] is None:\n         kwargs[\"callback\"] = sys.argv\n+\n     resubmit(*args, **kwargs)\n", "issue": "Job resubmission with job scheduler doesn't work \nI was not able to find out the reason behind resubmission issue with job scheduler, such as:\r\n`veros-resubmit -i acc.lowres -n 50 -l 62208000 -c \"python acc.py -b bohrium -v debug\" --callback \"/usr/bin/sbatch /groups/ocean/nutrik/veros_cases/paper/acc/veros_batch.sh\"`\r\nAlthough jobs with run length of up to 29 days are resubmitted fine, those with longer run length are not resubmitted and no errors or messages are reported.\r\n\r\nIn fact, jobs are successfully resubmitted without scheduler (`--callback \"./veros_batch.sh\"`) for any run length.\n", "before_files": [{"content": "#!/usr/bin/env python\n\nimport functools\nimport subprocess\nimport shlex\nimport sys\nimport os\n\nimport click\n\nLAST_N_FILENAME = \"{identifier}.current_run\"\n\n\nclass ShellCommand(click.ParamType):\n    name = \"command\"\n\n    def convert(self, value, param, ctx):\n        return shlex.split(value)\n\n\ndef get_current_n(filename):\n    if not os.path.isfile(filename):\n        return 0\n\n    with open(filename, \"r\") as f:\n        return int(f.read())\n\n\ndef write_next_n(n, filename):\n    with open(filename, \"w\") as f:\n        f.write(str(n))\n\n\ndef call_veros(cmd, name, n, runlen):\n    identifier = \"{name}.{n:0>4}\".format(name=name, n=n)\n    prev_id = \"{name}.{n:0>4}\".format(name=name, n=n - 1)\n    args = [\"-s\", \"identifier\", identifier, \"-s\", \"restart_output_filename\",\n            \"{identifier}.restart.h5\", \"-s\", \"runlen\", \"{}\".format(runlen)]\n    if n:\n        args += [\"-s\", \"restart_input_filename\", \"{prev_id}.restart.h5\".format(prev_id=prev_id)]\n    sys.stdout.write(\"\\n >>> {}\\n\\n\".format(\" \".join(cmd + args)))\n    sys.stdout.flush()\n    try:\n        subprocess.check_call(cmd + args)\n    except subprocess.CalledProcessError:\n        raise RuntimeError(\"Run {} failed, exiting\".format(n))\n\n\ndef resubmit(identifier, num_runs, length_per_run, veros_cmd, callback):\n    \"\"\"Performs several runs of Veros back to back, using the previous run as restart input.\n\n    Intended to be used with scheduling systems (e.g. SLURM or PBS).\n\n    \"\"\"\n    last_n_filename = LAST_N_FILENAME.format(identifier=identifier)\n\n    current_n = get_current_n(last_n_filename)\n    if current_n >= num_runs:\n        return\n\n    call_veros(veros_cmd, identifier, current_n, length_per_run)\n    write_next_n(current_n + 1, last_n_filename)\n    subprocess.Popen(callback)\n\n\n@click.command(\"veros-resubmit\", short_help=\"Re-run a Veros setup several times\")\n@click.option(\"-i\", \"--identifier\", required=True,\n              help=\"Base identifier of the simulation\")\n@click.option(\"-n\", \"--num-runs\", type=click.INT, required=True,\n              help=\"Total number of runs to execute\")\n@click.option(\"-l\", \"--length-per-run\", type=click.FLOAT, required=True,\n              help=\"Length (in seconds) of each run\")\n@click.option(\"-c\", \"--veros-cmd\", type=ShellCommand(), required=True,\n              help=\"The command that is used to call veros (quoted)\")\n@click.option(\"--callback\", metavar=\"CMD\", type=ShellCommand(), default=None,\n              help=\"Command to call after each run has finished (quoted, default: call self)\")\n@functools.wraps(resubmit)\ndef cli(*args, **kwargs):\n    if kwargs[\"callback\"] is None:\n        kwargs[\"callback\"] = sys.argv\n    resubmit(*args, **kwargs)\n\n\nif __name__ == \"__main__\":\n    cli()\n", "path": "veros/cli/veros_resubmit.py"}], "after_files": [{"content": "#!/usr/bin/env python\n\nimport functools\nimport subprocess\nimport shlex\nimport sys\nimport os\nimport time\n\nimport click\n\nLAST_N_FILENAME = \"{identifier}.current_run\"\nCHILD_TIMEOUT = 10\nPOLL_DELAY = 0.1\n\n\nclass ShellCommand(click.ParamType):\n    name = \"command\"\n\n    def convert(self, value, param, ctx):\n        return shlex.split(value)\n\n\ndef get_current_n(filename):\n    if not os.path.isfile(filename):\n        return 0\n\n    with open(filename, \"r\") as f:\n        return int(f.read())\n\n\ndef write_next_n(n, filename):\n    with open(filename, \"w\") as f:\n        f.write(str(n))\n\n\ndef call_veros(cmd, name, n, runlen):\n    identifier = \"{name}.{n:0>4}\".format(name=name, n=n)\n    prev_id = \"{name}.{n:0>4}\".format(name=name, n=n - 1)\n    args = [\"-s\", \"identifier\", identifier, \"-s\", \"restart_output_filename\",\n            \"{identifier}.restart.h5\", \"-s\", \"runlen\", \"{}\".format(runlen)]\n    if n:\n        args += [\"-s\", \"restart_input_filename\", \"{prev_id}.restart.h5\".format(prev_id=prev_id)]\n    sys.stdout.write(\"\\n >>> {}\\n\\n\".format(\" \".join(cmd + args)))\n    sys.stdout.flush()\n    try:\n        subprocess.check_call(cmd + args)\n    except subprocess.CalledProcessError:\n        raise RuntimeError(\"Run {} failed, exiting\".format(n))\n\n\ndef resubmit(identifier, num_runs, length_per_run, veros_cmd, callback):\n    \"\"\"Performs several runs of Veros back to back, using the previous run as restart input.\n\n    Intended to be used with scheduling systems (e.g. SLURM or PBS).\n\n    \"\"\"\n    last_n_filename = LAST_N_FILENAME.format(identifier=identifier)\n\n    current_n = get_current_n(last_n_filename)\n    if current_n >= num_runs:\n        return\n\n    call_veros(veros_cmd, identifier, current_n, length_per_run)\n    write_next_n(current_n + 1, last_n_filename)\n    next_proc = subprocess.Popen(callback)\n\n    # catch immediately crashing processes\n    timeout = CHILD_TIMEOUT\n\n    while timeout > 0:\n        retcode = next_proc.poll()\n        if retcode is not None:\n            if retcode > 0:\n                # process crashed\n                raise RuntimeError(\"Callback exited with {}\".format(retcode))\n            else:\n                break\n        time.sleep(POLL_DELAY)\n        timeout -= POLL_DELAY\n\n\n@click.command(\"veros-resubmit\", short_help=\"Re-run a Veros setup several times\")\n@click.option(\"-i\", \"--identifier\", required=True,\n              help=\"Base identifier of the simulation\")\n@click.option(\"-n\", \"--num-runs\", type=click.INT, required=True,\n              help=\"Total number of runs to execute\")\n@click.option(\"-l\", \"--length-per-run\", type=click.FLOAT, required=True,\n              help=\"Length (in seconds) of each run\")\n@click.option(\"-c\", \"--veros-cmd\", type=ShellCommand(), required=True,\n              help=\"The command that is used to call veros (quoted)\")\n@click.option(\"--callback\", metavar=\"CMD\", type=ShellCommand(), default=None,\n              help=\"Command to call after each run has finished (quoted, default: call self)\")\n@functools.wraps(resubmit)\ndef cli(*args, **kwargs):\n    if kwargs[\"callback\"] is None:\n        kwargs[\"callback\"] = sys.argv\n\n    resubmit(*args, **kwargs)\n\n\nif __name__ == \"__main__\":\n    cli()\n", "path": "veros/cli/veros_resubmit.py"}]}