Linux: thread 'main' panicked at src/speedtest.rs:284:10:

[iam-TJ]

I run IPv6 only networks. When passing the --ipv6 parameter this crash occurs but without it the program executes correctly using IPv6!

$ cfspeedtest --version
cfspeedtest 1.2.6

$ RUST_LOG=debug RUST_BACKTRACE=full cfspeedtest --ipv6
Starting Cloudflare speed test
[2024-09-15T20:21:37Z DEBUG reqwest::connect] starting new connection: https://speed.cloudflare.com/
thread 'main' panicked at src/speedtest.rs:284:10:
failed to get response: reqwest::Error { kind: Request, url: "https://speed.cloudflare.com/__down?bytes=0", source: TimedOut }
stack backtrace:
0:     0x563c4bb2a375 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hd736fd5964392270
1:     0x563c4bb5175b - core::fmt::write::hc6043626647b98ea
2:     0x563c4bb278ff - std::io::Write::write_fmt::h0d24b3e0473045db
3:     0x563c4bb2a14e - std::sys_common::backtrace::print::h45eb8174d25a1e76
4:     0x563c4bb2b4e9 - std::panicking::default_hook::{{closure}}::haf3f0170eb4f3b53
5:     0x563c4bb2b28a - std::panicking::default_hook::hb5d3b27aa9f6dcda
6:     0x563c4bb2b983 - std::panicking::rust_panic_with_hook::h6b49d59f86ee588c
7:     0x563c4bb2b864 - std::panicking::begin_panic_handler::{{closure}}::hd4c2f7ed79b82b70
8:     0x563c4bb2a839 - std::sys_common::backtrace::__rust_end_short_backtrace::h2946d6d32d7ea1ad
9:     0x563c4bb2b597 - rust_begin_unwind
10:     0x563c4b81da43 - core::panicking::panic_fmt::ha02418e5cd774672
11:     0x563c4b81ded6 - core::result::unwrap_failed::h55f86ada3ace5ed2
12:     0x563c4b836b32 - cfspeedtest::speedtest::fetch_metadata::he0ce9391ed3851c1
13:     0x563c4b8342e0 - cfspeedtest::speedtest::speed_test::h5b6956eae1f0e785
14:     0x563c4b8247f6 - cfspeedtest::main::h57ecd72add4d29d8
15:     0x563c4b822dd3 - std::sys_common::backtrace::__rust_begin_short_backtrace::hb03a4ce4a2592ae6
16:     0x563c4b8238e9 - std::rt::lang_start::{{closure}}::hb2dbeb1682d5b494
17:     0x563c4bb2218d - std::rt::lang_start_internal::hcee5ed89fc25829a
18:     0x563c4b824965 - main
19:     0x7f3a8444724a - __libc_start_call_main
at ./csu/../sysdeps/nptl/libc_start_call_main.h:58:16
20:     0x7f3a84447305 - __libc_start_main_impl
at ./csu/../csu/libc-start.c:360:3
21:     0x563c4b81e295 - _start
22:                0x0 - <unknown>

$ RUST_LOG=debug RUST_BACKTRACE=full cfspeedtest -d -m 25m --ipv6
Starting Cloudflare speed test
[2024-09-15T20:05:07Z DEBUG reqwest::connect] starting new connection: https://speed.cloudflare.com/
thread 'main' panicked at src/speedtest.rs:284:10:
failed to get response: reqwest::Error { kind: Request, url: "https://speed.cloudflare.com/__down?bytes=0", source: TimedOut }
stack backtrace:
0:     0x55691a9bc375 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hd736fd5964392270
1:     0x55691a9e375b - core::fmt::write::hc6043626647b98ea
2:     0x55691a9b98ff - std::io::Write::write_fmt::h0d24b3e0473045db
3:     0x55691a9bc14e - std::sys_common::backtrace::print::h45eb8174d25a1e76
4:     0x55691a9bd4e9 - std::panicking::default_hook::{{closure}}::haf3f0170eb4f3b53
5:     0x55691a9bd28a - std::panicking::default_hook::hb5d3b27aa9f6dcda
6:     0x55691a9bd983 - std::panicking::rust_panic_with_hook::h6b49d59f86ee588c
7:     0x55691a9bd864 - std::panicking::begin_panic_handler::{{closure}}::hd4c2f7ed79b82b70
8:     0x55691a9bc839 - std::sys_common::backtrace::__rust_end_short_backtrace::h2946d6d32d7ea1ad
9:     0x55691a9bd597 - rust_begin_unwind
10:     0x55691a6afa43 - core::panicking::panic_fmt::ha02418e5cd774672
11:     0x55691a6afed6 - core::result::unwrap_failed::h55f86ada3ace5ed2
12:     0x55691a6c8b32 - cfspeedtest::speedtest::fetch_metadata::he0ce9391ed3851c1
13:     0x55691a6c62e0 - cfspeedtest::speedtest::speed_test::h5b6956eae1f0e785
14:     0x55691a6b67f6 - cfspeedtest::main::h57ecd72add4d29d8
15:     0x55691a6b4dd3 - std::sys_common::backtrace::__rust_begin_short_backtrace::hb03a4ce4a2592ae6
16:     0x55691a6b58e9 - std::rt::lang_start::{{closure}}::hb2dbeb1682d5b494
17:     0x55691a9b418d - std::rt::lang_start_internal::hcee5ed89fc25829a
18:     0x55691a6b6965 - main
19:     0x7f239357124a - __libc_start_call_main
at ./csu/../sysdeps/nptl/libc_start_call_main.h:58:16
20:     0x7f2393571305 - __libc_start_main_impl
at ./csu/../csu/libc-start.c:360:3
21:     0x55691a6b0295 - _start
22:                0x0 - <unknown>

Without --ipv6 it executes well but appears to hit a timeout on a 25MB Upload test:

$ RUST_LOG=debug RUST_BACKTRACE=full cfspeedtest
Starting Cloudflare speed test
[2024-09-15T20:22:38Z DEBUG reqwest::connect] starting new connection: https://speed.cloudflare.com/
City: London
Country: GB
Ip: 2a0d:3344:11e:1ff0::ff
Asn: 14593
Colo: LHR
latency test    [========----------------------][2024-09-15T20:22:38Z DEBUG reqwest::connect] starting new connection: https://speed.cloudflare.com/
latency test    [===========================---][2024-09-15T20:22:40Z DEBUG reqwest::connect] starting new connection: https://speed.cloudflare.com/
latency test    [==============================]
Avg GET request latency 44.71 ms (RTT excluding server processing time)

[2024-09-15T20:22:40Z DEBUG cfspeedtest::speedtest] getting payload iterations for max_payload_size M25
[2024-09-15T20:22:40Z DEBUG cfspeedtest::speedtest] running tests for payload_size 100000
Download 100KB  [==============================]    3.85 mbit/s | 100KB in  207ms -> status: 200 OK
[2024-09-15T20:22:43Z DEBUG cfspeedtest::speedtest] running tests for payload_size 1000000
Download 1MB    [==============================]   19.59 mbit/s |   1MB in  408ms -> status: 200 OK
[2024-09-15T20:22:49Z INFO  cfspeedtest::speedtest] Exceeded threshold
[2024-09-15T20:22:49Z DEBUG cfspeedtest::speedtest] running tests for payload_size 100000
Upload 100KB    [==============================]    3.95 mbit/s | 100KB in  202ms -> status: 200 OK
[2024-09-15T20:22:51Z DEBUG cfspeedtest::speedtest] running tests for payload_size 1000000
Upload 1MB      [==============================]    5.16 mbit/s |   1MB in 1551ms -> status: 200 OK
[2024-09-15T20:23:09Z INFO  cfspeedtest::speedtest] Exceeded threshold

Summary Statistics
Type     Payload |  min/max/avg in mbit/s
[2024-09-15T20:23:09Z DEBUG cfspeedtest::measurements] calc_stats for mbit_measurements [12.246415577489602, 7.904119708209146, 21.228657371274462, 29.715668596600292, 10.725077009069354, 46.603599568823505, 1.6359097736458106, 5.174808692335741, 11.488866971960329, 3.849527494319024]
Download  100KB  |  min 1.64    max 46.60   avg 15.06
[2024-09-15T20:23:09Z DEBUG cfspeedtest::measurements] calc_stats for mbit_measurements [11.344095160668278, 9.19194575745485, 13.512372585378289, 15.298056889958843, 15.92554083455185, 18.506198659337407, 17.295242248566986, 20.111887660144173, 24.06715011654743, 19.591721647323286]
Download  1MB    |  min 9.19    max 24.07   avg 16.48
[2024-09-15T20:23:09Z DEBUG cfspeedtest::measurements] calc_stats for mbit_measurements [3.1637613161019287, 3.6607311267117235, 4.838822892217065, 5.175536269983506, 5.769410078612755, 4.413203256006197, 4.284376863921502, 3.5729299995574033, 3.261766958851946, 3.9477344435625863]
Upload    100KB  |  min 3.16    max 5.77    avg 4.21
[2024-09-15T20:23:09Z DEBUG cfspeedtest::measurements] calc_stats for mbit_measurements [3.8861134334214635, 4.464745044864102, 5.209199803683491, 3.957150171503902, 4.14393592629695, 6.0001326914344375, 3.927061084384679, 4.644309485609912, 4.918096283741058, 5.155002416922883]
Upload    1MB    |  min 3.89    max 6.00    avg 4.63

$ RUST_LOG=debug RUST_BACKTRACE=full cfspeedtest -d -m 25m
Starting Cloudflare speed test
[2024-09-15T20:13:50Z DEBUG reqwest::connect] starting new connection: https://speed.cloudflare.com/
City: London
Country: GB
Ip: 2a0d:3344:11e:1ff0::ff
Asn: 14593
Colo: LHR
latency test    [==============================]
Avg GET request latency 37.17 ms (RTT excluding server processing time)

[2024-09-15T20:13:53Z DEBUG cfspeedtest::speedtest] getting payload iterations for max_payload_size M25
[2024-09-15T20:13:53Z DEBUG cfspeedtest::speedtest] running tests for payload_size 100000
Download 100KB  [==============================]   49.93 mbit/s | 100KB in   16ms -> status: 200 OK
[2024-09-15T20:13:54Z DEBUG cfspeedtest::speedtest] running tests for payload_size 1000000
Download 1MB    [==============================]   23.88 mbit/s |   1MB in  335ms -> status: 200 OK
[2024-09-15T20:13:57Z DEBUG cfspeedtest::speedtest] running tests for payload_size 10000000
Download 10MB   [==============================]   48.48 mbit/s |  10MB in 1650ms -> status: 200 OK
[2024-09-15T20:14:08Z DEBUG cfspeedtest::speedtest] running tests for payload_size 25000000
Download 25MB   [==============================]  108.82 mbit/s |  25MB in 1837ms -> status: 200 OK
[2024-09-15T20:14:32Z DEBUG cfspeedtest::speedtest] running tests for payload_size 100000
Upload 100KB    [==============================]    6.27 mbit/s | 100KB in  127ms -> status: 200 OK
[2024-09-15T20:14:33Z DEBUG cfspeedtest::speedtest] running tests for payload_size 1000000
Upload 1MB      [==============================]    8.63 mbit/s |   1MB in  926ms -> status: 200 OK
[2024-09-15T20:14:42Z DEBUG cfspeedtest::speedtest] running tests for payload_size 10000000
Upload 10MB     [==============================]    4.86 mbit/s |  10MB in 16454ms -> status: 200 OK
[2024-09-15T20:16:12Z DEBUG cfspeedtest::speedtest] running tests for payload_size 25000000
Upload 25MB     [===========================---]thread 'main' panicked at src/speedtest.rs:230:43:OK
failed to get response: reqwest::Error { kind: Request, url: "https://speed.cloudflare.com/__up", source: TimedOut }
stack backtrace:
0:     0x5646648f4375 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hd736fd5964392270
1:     0x56466491b75b - core::fmt::write::hc6043626647b98ea
2:     0x5646648f18ff - std::io::Write::write_fmt::h0d24b3e0473045db
3:     0x5646648f414e - std::sys_common::backtrace::print::h45eb8174d25a1e76
4:     0x5646648f54e9 - std::panicking::default_hook::{{closure}}::haf3f0170eb4f3b53
5:     0x5646648f528a - std::panicking::default_hook::hb5d3b27aa9f6dcda
6:     0x5646648f5983 - std::panicking::rust_panic_with_hook::h6b49d59f86ee588c
7:     0x5646648f5864 - std::panicking::begin_panic_handler::{{closure}}::hd4c2f7ed79b82b70
8:     0x5646648f4839 - std::sys_common::backtrace::__rust_end_short_backtrace::h2946d6d32d7ea1ad
9:     0x5646648f5597 - rust_begin_unwind
10:     0x5646645e7a43 - core::panicking::panic_fmt::ha02418e5cd774672
11:     0x5646645e7ed6 - core::result::unwrap_failed::h55f86ada3ace5ed2
12:     0x5646645fff64 - cfspeedtest::speedtest::test_upload::h155f9c133d585604
13:     0x5646645ff8d8 - cfspeedtest::speedtest::run_tests::h48fb3b524bfac5e2
14:     0x5646645fe4de - cfspeedtest::speedtest::speed_test::h5b6956eae1f0e785
15:     0x5646645ee7f6 - cfspeedtest::main::h57ecd72add4d29d8
16:     0x5646645ecdd3 - std::sys_common::backtrace::__rust_begin_short_backtrace::hb03a4ce4a2592ae6
17:     0x5646645ed8e9 - std::rt::lang_start::{{closure}}::hb2dbeb1682d5b494
18:     0x5646648ec18d - std::rt::lang_start_internal::hcee5ed89fc25829a
19:     0x5646645ee965 - main
20:     0x7fea4beb824a - __libc_start_call_main
at ./csu/../sysdeps/nptl/libc_start_call_main.h:58:16
21:     0x7fea4beb8305 - __libc_start_main_impl
at ./csu/../csu/libc-start.c:360:3
22:     0x5646645e8295 - _start
23:                0x0 - <unknown>
```