Error unmarshaling iperf3 report: invalid character 'i' looking for beginning of value

[pau-hedgehog]

https://github.com/githedgehog/fabricator/actions/runs/21490987297/job/61914097900

2026-01-29T20:04:52.9655657Z 20:04:52 DBG Running iperf3 from=server-05 to=server-04
2026-01-29T20:05:21.1598767Z 20:05:21 WRN iperf3 server error, but could not retrieve error message from command output parseErr="unmarshaling iperf3 report: invalid character 'i' looking for beginning of value" stdout="iperf_json_finish: pthread_mutex_lock: No such file or directory\n{\n\t\"start\":\t{\n\t\t\"connected\":\t[{\n\t\t\t\t\"socket\":\t5,\n\t\t\t\t\"local_host\":\t\"10.0.4.2\",\n\t\t\t\t\"local_port\":\t5201,\n\t\t\t\t\"remote_host\":\t\"10.0.5.2\",\n\t\t\t\t\"remote_port\":\t37692\n\t\t\t}, {\n\t\t\t\t\"socket\":\t8,\n\t\t\t\t\"local_host\":\t\"10.0.4.2\",\n\t\t\t\t\"local_port\":\t5201,\n\t\t\t\t\"remote_host\":\t\"10.0.5.2\",\n\t\t\t\t\"remote_port\":\t37708\n\t\t\t}, {\n\t\t\t\t\"socket\":\t10,\n\t\t\t\t\"local_host\":\t\"10.0.4.2\",\n\t\t\t\t\"local_port\":\t5201,\n\t\t\t\t\"remote_host\":\t\"10.0.5.2\",\n\t\t\t\t\"remote_port\":\t37712\n\t\t\t}, 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- the server has terminated\"\n}\niperf_errexit: pthread_mutex_unlock: No such file or directory\n" stderr=""

[edipascale]

any idea for the reason behind the error in question?

iperf_json_finish: pthread_mutex_lock: No such file or directory

fixing the parsing will help with troubleshooting, but I suspect that if we see an error here iperf will fail anyway

[pau-hedgehog]

iperf_json_finish: pthread_mutex_lock: No such file or directory

Yes, I think I will add this to the pattern match script to see how frequent this is and investigate accordingly. Thanks for pointing this out

[pau-hedgehog]

I've been digging a bit and found this: esnet/iperf#1631

Not exactly the same but close enough, IMO.

I think it's worth checking with @Frostman what are out chances to upgrade iperf3 in toolbox

[Frostman]

@pau-hedgehog I guess it's possibly the root cause. The problem is that we're just installing iperf3 from packages in ubuntu 24.04 so it's very unlikely it's going to be updated from

root@4b3ae261c8f2:/# iperf3 --version
iperf 3.16 (cJSON 1.7.15)

that we currently have there. If you think it's happening regular enough, could you please take a look at toolbox repo and see if iperf3 should be installed from source there, you should only be modifying packages.sh

[pau-hedgehog]

@pau-hedgehog I guess it's possibly the root cause. The problem is that we're just installing iperf3 from packages in ubuntu 24.04 so it's very unlikely it's going to be updated from

root@4b3ae261c8f2:/# iperf3 --version
iperf 3.16 (cJSON 1.7.15)

that we currently have there. If you think it's happening regular enough, could you please take a look at toolbox repo and see if iperf3 should be installed from source there, you should only be modifying packages.sh

I'll add a pattern in our CI failure tracking scripts for this to prioritize if we are hitting it too frequently

[pau-hedgehog]

f you think it's happening regular enough, could you please take a look at toolbox repo and see if iperf3 should be installed from source there, you should only be modifying packages.sh

So yes, it's the 2nd CI offender of the last 5 days:

iPerf JSON Parse Failed (pthread errors)
   Jobs: 7
   Description: iPerf3 JSON parsing failed due to pthread_mutex errors corrupting output (fixed in PR 1402)
   Issue: https://github.com/githedgehog/fabricator/issues/1401 ○
   Example: 20:22:52 WRN iperf3 server error, but could not retrieve error message from command output parseErr=

   Affected jobs:
     - https://github.com/githedgehog/fabricator/actions/runs/21604232034/job/62258340391 (pau/show-tech-for-each-failed-relase-test: v-up25.05-gw-iso-l2vni-rt / Upgrade and test VLAB) [run-4.h 02-02 20:33→21:48]
     - https://github.com/githedgehog/fabricator/actions/runs/21571751700/job/62152166519 (pau/show-tech-for-each-failed-relase-test: v-mesh-iso-l2vni-rt / Run and test VLAB) [run-6.h 02-01 23:57→00:31]
     - https://github.com/githedgehog/fabricator/actions/runs/21569494814/job/62146474192 (pau/show-tech-for-each-failed-relase-test: v-up25.04-mesh-iso-l2vni-rt / Upgrade and test VLAB) [run-8.h 02-01 21:20→22:06]
     - https://github.com/githedgehog/fabricator/actions/runs/21569494814/job/62146474226 (pau/show-tech-for-each-failed-relase-test: v-usb-l2vni-rt / Run and test VLAB) [run-6.h 02-01 21:20→22:11]
     - https://github.com/githedgehog/fabricator/actions/runs/21545829765/job/62087210268 (pau/show-tech-for-each-failed-relase-test: v-up25.04-iso-l2vni-rt / Upgrade and test VLAB) [run-8.h 01-31 15:27→16:35]
     - https://github.com/githedgehog/fabricator/actions/runs/21490987297/job/61914097900 (pau/show-tech-for-each-failed-relase-test: v-up25.05-mesh-gw-iso-l2vni-rt / Upgrade and test VLAB) [run-3.h 01-29 20:26→21:20]
     - https://github.com/githedgehog/fabricator/actions/runs/21480444285/job/61875996409 (pau/dhcp_static_lease: v-up25.05-mesh-gw-iso-l2vni-rt / Upgrade and test VLAB) [run-4.h 01-29 14:52→15:50]

@Frostman, do you think we could just give 26.04 a try instead of building it for 24.04? It includes iperf 3.20
https://github.com/githedgehog/toolbox/actions/runs/21608216773/job/62270265417?pr=24#step:8:159

If you are ok exploring this path I can try a custom toolbox on my VLAB. Creating a tag in the toobox repo would update latest, right?

[pau-hedgehog]

We don't have the unmarshaling error anymore on iperf3 3.20. hhfab still complains about not being able to retrieve error message, though:

01:52:12 WRN iperf3 server error, but could not retrieve error message from command output parseErr=<nil> stdout="{\n\t\"start\":\t{\n\t\t\"connected\":\t[{\n\t\t\t\t\"socket\":\t5,\n\t\t\t\t\"local_host\":\t\"10.30.2.5\",\n\t\t\t\t\"local_port\":\t5201,\n\t\t\t\t\"remote_host\":\t\"10.30.1.2\",\n\t\t\t\t\"remote_port\":\t57954\n\t\t\t}, {\n\t\t\t\t\"socket\":\t8,\n\t\t\t\t\"local_host\":\t\"10.30.2.5\",\n\t\t\t\t\"local_port\":\t5201,\n\t\t\t\t\"remote_host\":\t\"10.30.1.2\",\n\t\t\t\t\"remote_port\":\t57958\n\t\t\t}, {\n\t\t\t\t\"socket\":\t10,\n\t\t\t\t\"local_host\":\t\"10.30.2.5\",\n\t\t\t\t\"local_port\":\t5201,\n\t\t\t\t\"remote_host\":\t\"10.30.1.2\",\n\t\t\t\t\"remote_port\":\t57970\n\t\t\t}, {\n\t\t\t\t\"socket\":\t12,\n\t\t\t\t\"local_host\":\t\"10.30.2.5\",\n\t\t\t\t\"local_port\":\t5201,\n\t\t\t\t\"remote_host\":\t\"10.30.1.2\",\n\t\t\t\t\"remote_port\":\t57974\n\t\t\t}],\n\t\t\"version\":\t\"iperf 3.20\",\n\t\t\"system_info\":\t\"Linux server-5 6.12.61-flatcar #1 SMP PREEMPT_DYNAMIC Fri Dec 12 15:21:28 -00 2025 x86_64\",\n\t\t\"sock_bufsize\":\t0,\n\t\t\"sndbuf_actual\":\t16384,\n\t\t\"rcvbuf_actual\":\t131072,\n\t\t\"timestamp\":\t{\n\t\t\t\"time\":\t\"Fri, 06 Feb 2026 01:52:08 GMT\",\n\t\t\t\"timesecs\":\t1770342728,\n\t\t\t\"timemillisecs\":\t1770342728971\n\t\t},\n\t\t\"accepted_connection\":\t{\n\t\t\t\"host\":\t\"10.30.1.2\",\n\t\t\t\"port\":\t57952\n\t\t},\n\t\t\"cookie\":\t\"xxn7kznlav4kyo6qyfjhftq3lsjvnthmorim\",\n\t\t\"tcp_mss_default\":\t0,\n\t\t\"target_bitrate\":\t0,\n\t\t\"fq_rate\":\t0,\n\t\t\"test_start\":\t{\n\t\t\t\"protocol\":\t\"TCP\",\n\t\t\t\"num_streams\":\t4,\n\t\t\t\"blksize\":\t131072,\n\t\t\t\"omit\":\t0,\n\t\t\t\"duration\":\t3,\n\t\t\t\"bytes\":\t0,\n\t\t\t\"blocks\":\t0,\n\t\t\t\"reverse\":\t0,\n\t\t\t\"tos\":\t0,\n\t\t\t\"target_bitrate\":\t0,\n\t\t\t\"bidir\":\t0,\n\t\t\t\"fqrate\":\t0,\n\t\t\t\"interval\":\t1\n\t\t}\n\t},\n\t\"intervals\":\t[{\n\t\t\t\"streams\":\t[{\n\t\t\t\t\t\"socket\":\t5,\n\t\t\t\t\t\"start\":\t0,\n\t\t\t\t\t\"end\":\t1.000246,\n\t\t\t\t\t\"seconds\":\t1.0002460479736328,\n\t\t\t\t\t\"bytes\":\t122421248,\n\t\t\t\t\t\"bits_per_second\":\t979129071.27608752,\n\t\t\t\t\t\"omitted\":\tfalse,\n\t\t\t\t\t\"sender\":\tfalse\n\t\t\t\t}, {\n\t\t\t\t\t\"socket\":\t8,\n\t\t\t\t\t\"start\":\t0,\n\t\t\t\t\t\"end\":\t1.000255,\n\t\t\t\t\t\"seconds\":\t1.0002549886703491,\n\t\t\t\t\t\"bytes\":\t122683392,\n\t\t\t\t\t\"bits_per_second\":\t981216936.797962,\n\t\t\t\t\t\"omitted\":\tfalse,\n\t\t\t\t\t\"sender\":\tfalse\n\t\t\t\t}, {\n\t\t\t\t\t\"socket\":\t10,\n\t\t\t\t\t\"start\":\t0,\n\t\t\t\t\t\"end\":\t1.000256,\n\t\t\t\t\t\"seconds\":\t1.0002559423446655,\n\t\t\t\t\t\"bytes\":\t124387328,\n\t\t\t\t\t\"bits_per_second\":\t994844001.2937324,\n\t\t\t\t\t\"omitted\":\tfalse,\n\t\t\t\t\t\"sender\":\tfalse\n\t\t\t\t}, {\n\t\t\t\t\t\"socket\":\t12,\n\t\t\t\t\t\"start\":\t0,\n\t\t\t\t\t\"end\":\t1.000257,\n\t\t\t\t\t\"seconds\":\t1.0002570152282715,\n\t\t\t\t\t\"bytes\":\t159645696,\n\t\t\t\t\t\"bits_per_second\":\t1276837401.343828,\n\t\t\t\t\t\"omitted\":\tfalse,\n\t\t\t\t\t\"sender\":\tfalse\n\t\t\t\t}],\n\t\t\t\"sum\":\t{\n\t\t\t\t\"start\":\t0,\n\t\t\t\t\"end\":\t1.000246,\n\t\t\t\t\"seconds\":\t1.0002460479736328,\n\t\t\t\t\"bytes\":\t529137664,\n\t\t\t\t\"bits_per_second\":\t4232060022.2072434,\n\t\t\t\t\"omitted\":\tfalse,\n\t\t\t\t\"sender\":\tfalse\n\t\t\t}\n\t\t}, {\n\t\t\t\"streams\":\t[{\n\t\t\t\t\t\"socket\":\t5,\n\t\t\t\t\t\"start\":\t1.000246,\n\t\t\t\t\t\"end\":\t2.000202,\n\t\t\t\t\t\"seconds\":\t0.99995601177215576,\n\t\t\t\t\t\"bytes\":\t108527616,\n\t\t\t\t\t\"bits_per_second\":\t868259121.18005025,\n\t\t\t\t\t\"omitted\":\tfalse,\n\t\t\t\t\t\"sender\":\tfalse\n\t\t\t\t}, {\n\t\t\t\t\t\"socket\":\t8,\n\t\t\t\t\t\"start\":\t1.000255,\n\t\t\t\t\t\"end\":\t2.000207,\n\t\t\t\t\t\"seconds\":\t0.99995201826095581,\n\t\t\t\t\t\"bytes\":\t135397376,\n\t\t\t\t\t\"bits_per_second\":\t1083230983.3063655,\n\t\t\t\t\t\"omitted\":\tfalse,\n\t\t\t\t\t\"sender\":\tfalse\n\t\t\t\t}, {\n\t\t\t\t\t\"socket\":\t10,\n\t\t\t\t\t\"start\":\t1.000256,\n\t\t\t\t\t\"end\":\t2.000208,\n\t\t\t\t\t\"seconds\":\t0.99995201826095581,\n\t\t\t\t\t\"bytes\":\t150339584,\n\t\t\t\t\t\"bits_per_second\":\t1202774383.206584,\n\t\t\t\t\t\"omitted\":\tfalse,\n\t\t\t\t\t\"sender\":\tfalse\n\t\t\t\t}, {\n\t\t\t\t\t\"socket\":\t12,\n\t\t\t\t\t\"start\":\t1.000257,\n\t\t\t\t\t\"end\":\t2.000209,\n\t\t\t\t\t\"seconds\":\t0.99995201826095581,\n\t\t\t\t\t\"bytes\":\t160563200,\n\t\t\t\t\t\"bits_per_second\":\t1284567235.7698915,\n\t\t\t\t\t\"omitted\":\tfalse,\n\t\t\t\t\t\"sender\":\tfalse\n\t\t\t\t}],\n\t\t\t\"sum\":\t{\n\t\t\t\t\"start\":\t1.000246,\n\t\t\t\t\"end\":\t2.000202,\n\t\t\t\t\"seconds\":\t0.99995601177215576,\n\t\t\t\t\"bytes\":\t554827776,\n\t\t\t\t\"bits_per_second\":\t4438817463.713953,\n\t\t\t\t\"omitted\":\tfalse,\n\t\t\t\t\"sender\":\tfalse\n\t\t\t}\n\t\t}, {\n\t\t\t\"streams\":\t[{\n\t\t\t\t\t\"socket\":\t5,\n\t\t\t\t\t\"start\":\t2.000202,\n\t\t\t\t\t\"end\":\t3.001038,\n\t\t\t\t\t\"seconds\":\t1.0008360147476196,\n\t\t\t\t\t\"bytes\":\t146931712,\n\t\t\t\t\t\"bits_per_second\":\t1174471820.2376177,\n\t\t\t\t\t\"omitted\":\tfalse,\n\t\t\t\t\t\"sender\":\tfalse\n\t\t\t\t}, {\n\t\t\t\t\t\"socket\":\t8,\n\t\t\t\t\t\"start\":\t2.000207,\n\t\t\t\t\t\"end\":\t3.001043,\n\t\t\t\t\t\"seconds\":\t1.0008360147476196,\n\t\t\t\t\t\"bytes\":\t122552320,\n\t\t\t\t\t\"bits_per_second\":\t979599600.28739738,\n\t\t\t\t\t\"omitted\":\tfalse,\n\t\t\t\t\t\"sender\":\tfalse\n\t\t\t\t}, {\n\t\t\t\t\t\"socket\":\t10,\n\t\t\t\t\t\"start\":\t2.000208,\n\t\t\t\t\t\"end\":\t3.001045,\n\t\t\t\t\t\"seconds\":\t1.000836968421936,\n\t\t\t\t\t\"bytes\":\t140247040,\n\t\t\t\t\t\"bits_per_second\":\t1121038046.5552444,\n\t\t\t\t\t\"omitted\":\tfalse,\n\t\t\t\t\t\"sender\":\tfalse\n\t\t\t\t}, {\n\t\t\t\t\t\"socket\":\t12,\n\t\t\t\t\t\"start\":\t2.000209,\n\t\t\t\t\t\"end\":\t3.001046,\n\t\t\t\t\t\"seconds\":\t1.000836968421936,\n\t\t\t\t\t\"bytes\":\t149028864,\n\t\t\t\t\t\"bits_per_second\":\t1191233886.8535635,\n\t\t\t\t\t\"omitted\":\tfalse,\n\t\t\t\t\t\"sender\":\tfalse\n\t\t\t\t}],\n\t\t\t\"sum\":\t{\n\t\t\t\t\"start\":\t2.000202,\n\t\t\t\t\"end\":\t3.001038,\n\t\t\t\t\"seconds\":\t1.0008360147476196,\n\t\t\t\t\"bytes\":\t558759936,\n\t\t\t\t\"bits_per_second\":\t4466345557.2461767,\n\t\t\t\t\"omitted\":\tfalse,\n\t\t\t\t\"sender\":\tfalse\n\t\t\t}\n\t\t}],\n\t\"end\":\t{\n\t\t\"streams\":\t[{\n\t\t\t\t\"sender\":\t{\n\t\t\t\t\t\"socket\":\t5,\n\t\t\t\t\t\"start\":\t0,\n\t\t\t\t\t\"end\":\t3.001329,\n\t\t\t\t\t\"seconds\":\t3.001329,\n\t\t\t\t\t\"bytes\":\t0,\n\t\t\t\t\t\"bits_per_second\":\t0,\n\t\t\t\t\t\"sender\":\tfalse\n\t\t\t\t},\n\t\t\t\t\"receiver\":\t{\n\t\t\t\t\t\"socket\":\t5,\n\t\t\t\t\t\"start\":\t0,\n\t\t\t\t\t\"end\":\t3.001329,\n\t\t\t\t\t\"seconds\":\t3.001329,\n\t\t\t\t\t\"bytes\":\t377880576,\n\t\t\t\t\t\"bits_per_second\":\t1007235330.7484784,\n\t\t\t\t\t\"sender\":\tfalse\n\t\t\t\t}\n\t\t\t}, {\n\t\t\t\t\"sender\":\t{\n\t\t\t\t\t\"socket\":\t8,\n\t\t\t\t\t\"start\":\t0,\n\t\t\t\t\t\"end\":\t3.001329,\n\t\t\t\t\t\"seconds\":\t3.001329,\n\t\t\t\t\t\"bytes\":\t0,\n\t\t\t\t\t\"bits_per_second\":\t0,\n\t\t\t\t\t\"sender\":\tfalse\n\t\t\t\t},\n\t\t\t\t\"receiver\":\t{\n\t\t\t\t\t\"socket\":\t8,\n\t\t\t\t\t\"start\":\t0,\n\t\t\t\t\t\"end\":\t3.001329,\n\t\t\t\t\t\"seconds\":\t3.001329,\n\t\t\t\t\t\"bytes\":\t380633088,\n\t\t\t\t\t\"bits_per_second\":\t1014572112.5541384,\n\t\t\t\t\t\"sender\":\tfalse\n\t\t\t\t}\n\t\t\t}, {\n\t\t\t\t\"sender\":\t{\n\t\t\t\t\t\"socket\":\t10,\n\t\t\t\t\t\"start\":\t0,\n\t\t\t\t\t\"end\":\t3.001329,\n\t\t\t\t\t\"seconds\":\t3.001329,\n\t\t\t\t\t\"bytes\":\t0,\n\t\t\t\t\t\"bits_per_second\":\t0,\n\t\t\t\t\t\"sender\":\tfalse\n\t\t\t\t},\n\t\t\t\t\"receiver\":\t{\n\t\t\t\t\t\"socket\":\t10,\n\t\t\t\t\t\"start\":\t0,\n\t\t\t\t\t\"end\":\t3.001329,\n\t\t\t\t\t\"seconds\":\t3.001329,\n\t\t\t\t\t\"bytes\":\t414973952,\n\t\t\t\t\t\"bits_per_second\":\t1106107199.8438025,\n\t\t\t\t\t\"sender\":\tfalse\n\t\t\t\t}\n\t\t\t}, {\n\t\t\t\t\"sender\":\t{\n\t\t\t\t\t\"socket\":\t12,\n\t\t\t\t\t\"start\":\t0,\n\t\t\t\t\t\"end\":\t3.001329,\n\t\t\t\t\t\"seconds\":\t3.001329,\n\t\t\t\t\t\"bytes\":\t0,\n\t\t\t\t\t\"bits_per_second\":\t0,\n\t\t\t\t\t\"sender\":\tfalse\n\t\t\t\t},\n\t\t\t\t\"receiver\":\t{\n\t\t\t\t\t\"socket\":\t12,\n\t\t\t\t\t\"start\":\t0,\n\t\t\t\t\t\"end\":\t3.001329,\n\t\t\t\t\t\"seconds\":\t3.001329,\n\t\t\t\t\t\"bytes\":\t469237760,\n\t\t\t\t\t\"bits_per_second\":\t1250746612.5839586,\n\t\t\t\t\t\"sender\":\tfalse\n\t\t\t\t}\n\t\t\t}],\n\t\t\"sum_sent\":\t{\n\t\t\t\"start\":\t0,\n\t\t\t\"end\":\t3.001329,\n\t\t\t\"seconds\":\t3.001329,\n\t\t\t\"bytes\":\t0,\n\t\t\t\"bits_per_second\":\t0,\n\t\t\t\"sender\":\tfalse\n\t\t},\n\t\t\"sum_received\":\t{\n\t\t\t\"start\":\t0,\n\t\t\t\"end\":\t3.001329,\n\t\t\t\"seconds\":\t3.001329,\n\t\t\t\"bytes\":\t1642725376,\n\t\t\t\"bits_per_second\":\t4378661255.7303782,\n\t\t\t\"sender\":\tfalse\n\t\t},\n\t\t\"cpu_utilization_percent\":\t{\n\t\t\t\"host_total\":\t28.77618860560554,\n\t\t\t\"host_user\":\t1.5073201985904359,\n\t\t\t\"host_system\":\t27.268768452094772,\n\t\t\t\"remote_total\":\t0,\n\t\t\t\"remote_user\":\t0,\n\t\t\t\"remote_system\":\t0\n\t\t},\n\t\t\"receiver_tcp_congestion\":\t\"cubic\"\n\t}\n}\n" stderr=""
01:59:31 ERR Test connectivity failed ping=0 iperf=2 curl=0 took=8m22.054065411s errors="iperf server-4 -> server-5: client: iperf3 send speed too low, server: running command: cancelled: context canceled:  (sent 4388.92 Mbps, rcvd 4378.66 Mbps, min expected 8200.00 Mbps)\niperf server-2 -> server-12: client: iperf3 send speed too low (sent 4382.66 Mbps, rcvd 4374.78 Mbps, min expected 8200.00 Mbps)"
01:59:37 ERR FAIL test="MCLAG Failover" error="iperf server-4 -> server-5: client: iperf3 send speed too low, server: running command: cancelled: context canceled:  (sent 4388.92 Mbps, rcvd 4378.66 Mbps, min expected 8200.00 Mbps)\niperf server-2 -> server-12: client: iperf3 send speed too low (sent 4382.66 Mbps, rcvd 4374.78 Mbps, min expected 8200.00 Mbps)"

[pau-hedgehog]

We still hit this but only in 25.04 or 25.05 upgrade jobs, as the fix is going for 26.01:

     Jobs: 2                                                                                                                                                                                                                     
     Description: iPerf3 JSON parsing failed due to pthread_mutex errors corrupting output (fixed in PR 1402)                                                                                                                        
     Issue: https://github.com/githedgehog/fabricator/issues/1401 ○                                                                                                                                                                
     Example: 17:45:16 WRN iperf3 server error, but could not retrieve error message from command output parseErr=                                                                                                               
                                                                                                                                                                                                                                 
     Affected jobs:                                                                                                                                                                                                              
       - https://github.com/githedgehog/fabricator/actions/runs/21956273375/job/63422186255 (pau/show-tech-for-each-failed-relase-test: v-up25.05-mesh-gw-iso-l2vni-rt / Upgrade and test VLAB) [run-2.h 02-12 18:10→19:07]      
       - https://github.com/githedgehog/fabricator/actions/runs/21852757411/job/63063491944 (pau/show-tech-for-each-failed-relase-test: v-up25.05-mesh-gw-iso-l2vni-rt / Upgrade and test VLAB) [run-1.h 02-10 06:52→07:46] 

[pau-hedgehog]

Just hit a similar one:

16:41:05 WRN Error running on-ready commands err="testing connectivity: iperf server-04 -> server-01: client: running command: cancelled: context canceled: , server: cannot parse iperf3 report: unmarshaling iperf3 report: invalid character 'w' looking for beginning of value"

https://github.com/githedgehog/fabricator/actions/runs/22070129756/job/63773015960?pr=1463