It's a bug in assert_eq_sorted.
I managed to reduce it down to the following minimal reproducible example:
#[cfg(test)]
mod test {
use pretty_assertions_sorted::assert_eq_sorted;
use serde_json::json;
#[test]
fn double_panic() {
assert_eq_sorted!(json!({"a":0}), json!(null));
}
}
When run with cargo test -- --nocapture:
running 1 test
thread 'test::double_panic' panicked at 'Failed to parse Debug output, err: Failed to consume all of string!
Value:
Object
Rest:
" {\"a\": Number(0)}"', /home/finomnis/.cargo/registry/src/github.com-1ecc6299db9ec823/pretty_assertions_sorted-1.2.0/src/lib.rs:101:17
stack backtrace:
0: 0x56291e9c8e3d - std::backtrace_rs::backtrace::libunwind::trace::h8217d0a8f3fd2f41
at /rustc/4b91a6ea7258a947e59c6522cd5898e7c0a6a88f/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5
1: 0x56291e9c8e3d - std::backtrace_rs::backtrace::trace_unsynchronized::h308103876b3af410
at /rustc/4b91a6ea7258a947e59c6522cd5898e7c0a6a88f/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
2: 0x56291e9c8e3d - std::sys_common::backtrace::_print_fmt::hc208018c6153605e
at /rustc/4b91a6ea7258a947e59c6522cd5898e7c0a6a88f/library/std/src/sys_common/backtrace.rs:66:5
3: 0x56291e9c8e3d - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hf89a7ed694dfb585
at /rustc/4b91a6ea7258a947e59c6522cd5898e7c0a6a88f/library/std/src/sys_common/backtrace.rs:45:22
4: 0x56291e9ebc1c - core::fmt::write::h21038c1382fe4264
at /rustc/4b91a6ea7258a947e59c6522cd5898e7c0a6a88f/library/core/src/fmt/mod.rs:1197:17
5: 0x56291e9c5931 - std::io::Write::write_fmt::h7dbb1c9a3c254aef
at /rustc/4b91a6ea7258a947e59c6522cd5898e7c0a6a88f/library/std/src/io/mod.rs:1672:15
6: 0x56291e9ca8b5 - std::sys_common::backtrace::_print::h4e8889719c9ddeb8
at /rustc/4b91a6ea7258a947e59c6522cd5898e7c0a6a88f/library/std/src/sys_common/backtrace.rs:48:5
7: 0x56291e9ca8b5 - std::sys_common::backtrace::print::h1506fe2cb3022667
at /rustc/4b91a6ea7258a947e59c6522cd5898e7c0a6a88f/library/std/src/sys_common/backtrace.rs:35:9
8: 0x56291e9ca8b5 - std::panicking::default_hook::{{closure}}::hd9d7ce2a8a782440
at /rustc/4b91a6ea7258a947e59c6522cd5898e7c0a6a88f/library/std/src/panicking.rs:295:22
9: 0x56291e9ca5d6 - std::panicking::default_hook::h5b16ec25444b1b5d
at /rustc/4b91a6ea7258a947e59c6522cd5898e7c0a6a88f/library/std/src/panicking.rs:314:9
10: 0x56291e9cae46 - std::panicking::rust_panic_with_hook::hb0138cb6e6fea3e4
at /rustc/4b91a6ea7258a947e59c6522cd5898e7c0a6a88f/library/std/src/panicking.rs:698:17
11: 0x56291e9cad37 - std::panicking::begin_panic_handler::{{closure}}::h4cb67095557cd1aa
at /rustc/4b91a6ea7258a947e59c6522cd5898e7c0a6a88f/library/std/src/panicking.rs:588:13
12: 0x56291e9c92f4 - std::sys_common::backtrace::__rust_end_short_backtrace::h2bfcac279dcdc911
at /rustc/4b91a6ea7258a947e59c6522cd5898e7c0a6a88f/library/std/src/sys_common/backtrace.rs:138:18
13: 0x56291e9caa69 - rust_begin_unwind
at /rustc/4b91a6ea7258a947e59c6522cd5898e7c0a6a88f/library/std/src/panicking.rs:584:5
14: 0x56291e8f33e3 - core::panicking::panic_fmt::h1de71520faaa17d3
at /rustc/4b91a6ea7258a947e59c6522cd5898e7c0a6a88f/library/core/src/panicking.rs:142:14
15: 0x56291e8f8f18 - <pretty_assertions_sorted::SortedDebug<T> as core::fmt::Debug>::fmt::h57312b215cce8a2d
at /home/finomnis/.cargo/registry/src/github.com-1ecc6299db9ec823/pretty_assertions_sorted-1.2.0/src/lib.rs:101:17
16: 0x56291e8f8cb6 - <&T as core::fmt::Debug>::fmt::h08992fb97cb26304
at /rustc/4b91a6ea7258a947e59c6522cd5898e7c0a6a88f/library/core/src/fmt/mod.rs:2135:62
17: 0x56291e9ebb9b - core::fmt::run::h04a2d130287fdf44
at /rustc/4b91a6ea7258a947e59c6522cd5898e7c0a6a88f/library/core/src/fmt/mod.rs:1245:5
18: 0x56291e9ebb9b - core::fmt::write::h21038c1382fe4264
at /rustc/4b91a6ea7258a947e59c6522cd5898e7c0a6a88f/library/core/src/fmt/mod.rs:1213:26
19: 0x56291e9e61b9 - core::fmt::Write::write_fmt::hb01fdc89301b9dd0
at /rustc/4b91a6ea7258a947e59c6522cd5898e7c0a6a88f/library/core/src/fmt/mod.rs:187:9
20: 0x56291e9e61b9 - alloc::fmt::format::format_inner::h3fdf7b01996f555c
at /rustc/4b91a6ea7258a947e59c6522cd5898e7c0a6a88f/library/alloc/src/fmt.rs:612:9
21: 0x56291e957ce1 - alloc::fmt::format::{{closure}}::h8d5a6d5a9f27ae79
at /rustc/4b91a6ea7258a947e59c6522cd5898e7c0a6a88f/library/alloc/src/fmt.rs:616:34
22: 0x56291e958fea - core::option::Option<T>::map_or_else::h2173b95551bac11e
at /rustc/4b91a6ea7258a947e59c6522cd5898e7c0a6a88f/library/core/src/option.rs:1023:21
23: 0x56291e8f81ee - alloc::fmt::format::hec789ac598d607bd
at /rustc/4b91a6ea7258a947e59c6522cd5898e7c0a6a88f/library/alloc/src/fmt.rs:616:5
24: 0x56291e8f90ec - <pretty_assertions::Comparison<TLeft,TRight> as core::fmt::Display>::fmt::hebb40026d1dd72ef
at /home/finomnis/.cargo/registry/src/github.com-1ecc6299db9ec823/pretty_assertions-1.3.0/src/lib.rs:135:26
25: 0x56291e9ebc1c - core::fmt::write::h21038c1382fe4264
at /rustc/4b91a6ea7258a947e59c6522cd5898e7c0a6a88f/library/core/src/fmt/mod.rs:1197:17
26: 0x56291e9cabdc - core::fmt::Write::write_fmt::h7dde5490f740f43d
at /rustc/4b91a6ea7258a947e59c6522cd5898e7c0a6a88f/library/core/src/fmt/mod.rs:187:9
27: 0x56291e9cabdc - std::panicking::begin_panic_handler::PanicPayload::fill::{{closure}}::he65d23c331dfcce3
at /rustc/4b91a6ea7258a947e59c6522cd5898e7c0a6a88f/library/std/src/panicking.rs:550:22
28: 0x56291e9cabdc - core::option::Option<T>::get_or_insert_with::hb4d636eeeddd23cb
at /rustc/4b91a6ea7258a947e59c6522cd5898e7c0a6a88f/library/core/src/option.rs:1544:49
29: 0x56291e9cabdc - std::panicking::begin_panic_handler::PanicPayload::fill::h4e79032a5d9ce017
at /rustc/4b91a6ea7258a947e59c6522cd5898e7c0a6a88f/library/std/src/panicking.rs:548:13
30: 0x56291e9cabdc - <std::panicking::begin_panic_handler::PanicPayload as core::panic::BoxMeUp>::get::h7f9447447ad87273
at /rustc/4b91a6ea7258a947e59c6522cd5898e7c0a6a88f/library/std/src/panicking.rs:566:13
31: 0x56291e9cae31 - std::panicking::rust_panic_with_hook::hb0138cb6e6fea3e4
at /rustc/4b91a6ea7258a947e59c6522cd5898e7c0a6a88f/library/std/src/panicking.rs:697:34
32: 0x56291e9cad37 - std::panicking::begin_panic_handler::{{closure}}::h4cb67095557cd1aa
at /rustc/4b91a6ea7258a947e59c6522cd5898e7c0a6a88f/library/std/src/panicking.rs:588:13
33: 0x56291e9c92f4 - std::sys_common::backtrace::__rust_end_short_backtrace::h2bfcac279dcdc911
at /rustc/4b91a6ea7258a947e59c6522cd5898e7c0a6a88f/library/std/src/sys_common/backtrace.rs:138:18
34: 0x56291e9caa69 - rust_begin_unwind
at /rustc/4b91a6ea7258a947e59c6522cd5898e7c0a6a88f/library/std/src/panicking.rs:584:5
35: 0x56291e8f33e3 - core::panicking::panic_fmt::h1de71520faaa17d3
at /rustc/4b91a6ea7258a947e59c6522cd5898e7c0a6a88f/library/core/src/panicking.rs:142:14
36: 0x56291e8f3eea - rust_tmp::test::double_panic::h45d788b1dd43b0d6
at /home/finomnis/work/rust-tmp/src/lib.rs:8:9
37: 0x56291e8f8c6a - rust_tmp::test::double_panic::{{closure}}::h2e78776b44f9e8d8
at /home/finomnis/work/rust-tmp/src/lib.rs:7:5
38: 0x56291e8f858e - core::ops::function::FnOnce::call_once::haa7b0260a53ae747
at /rustc/4b91a6ea7258a947e59c6522cd5898e7c0a6a88f/library/core/src/ops/function.rs:248:5
39: 0x56291e92e7b3 - core::ops::function::FnOnce::call_once::h0834638dccd7f44f
at /rustc/4b91a6ea7258a947e59c6522cd5898e7c0a6a88f/library/core/src/ops/function.rs:248:5
40: 0x56291e92e7b3 - test::__rust_begin_short_backtrace::h236b9d3086614016
at /rustc/4b91a6ea7258a947e59c6522cd5898e7c0a6a88f/library/test/src/lib.rs:572:5
41: 0x56291e92d5ba - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h836d617c8cafab84
at /rustc/4b91a6ea7258a947e59c6522cd5898e7c0a6a88f/library/alloc/src/boxed.rs:1951:9
42: 0x56291e92d5ba - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h749e4286e2b07713
at /rustc/4b91a6ea7258a947e59c6522cd5898e7c0a6a88f/library/core/src/panic/unwind_safe.rs:271:9
43: 0x56291e92d5ba - std::panicking::try::do_call::h43a1b83a3cb9edc8
at /rustc/4b91a6ea7258a947e59c6522cd5898e7c0a6a88f/library/std/src/panicking.rs:492:40
44: 0x56291e92d5ba - std::panicking::try::h5622fa742e7f1abc
at /rustc/4b91a6ea7258a947e59c6522cd5898e7c0a6a88f/library/std/src/panicking.rs:456:19
45: 0x56291e92d5ba - std::panic::catch_unwind::h99900a1dadf94a68
at /rustc/4b91a6ea7258a947e59c6522cd5898e7c0a6a88f/library/std/src/panic.rs:137:14
46: 0x56291e92d5ba - test::run_test_in_process::h3893e153ea830832
at /rustc/4b91a6ea7258a947e59c6522cd5898e7c0a6a88f/library/test/src/lib.rs:595:18
47: 0x56291e92d5ba - test::run_test::run_test_inner::{{closure}}::h1a6c1ab1f6c36f74
at /rustc/4b91a6ea7258a947e59c6522cd5898e7c0a6a88f/library/test/src/lib.rs:489:39
48: 0x56291e8f9b2d - test::run_test::run_test_inner::{{closure}}::hb34d5332aa2ee72c
at /rustc/4b91a6ea7258a947e59c6522cd5898e7c0a6a88f/library/test/src/lib.rs:516:37
49: 0x56291e8f9b2d - std::sys_common::backtrace::__rust_begin_short_backtrace::h99ab4c6a3071a36c
at /rustc/4b91a6ea7258a947e59c6522cd5898e7c0a6a88f/library/std/src/sys_common/backtrace.rs:122:18
50: 0x56291e8ff558 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h27cba0714207d393
at /rustc/4b91a6ea7258a947e59c6522cd5898e7c0a6a88f/library/std/src/thread/mod.rs:505:17
51: 0x56291e8ff558 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h9cf84e534f80e48a
at /rustc/4b91a6ea7258a947e59c6522cd5898e7c0a6a88f/library/core/src/panic/unwind_safe.rs:271:9
52: 0x56291e8ff558 - std::panicking::try::do_call::hcd5ff80e96737b38
at /rustc/4b91a6ea7258a947e59c6522cd5898e7c0a6a88f/library/std/src/panicking.rs:492:40
53: 0x56291e8ff558 - std::panicking::try::h1813b6532a9dacd8
at /rustc/4b91a6ea7258a947e59c6522cd5898e7c0a6a88f/library/std/src/panicking.rs:456:19
54: 0x56291e8ff558 - std::panic::catch_unwind::hff2a46cca1d01f0b
at /rustc/4b91a6ea7258a947e59c6522cd5898e7c0a6a88f/library/std/src/panic.rs:137:14
55: 0x56291e8ff558 - std::thread::Builder::spawn_unchecked_::{{closure}}::h83c4b74ca1b724fc
at /rustc/4b91a6ea7258a947e59c6522cd5898e7c0a6a88f/library/std/src/thread/mod.rs:504:30
56: 0x56291e8ff558 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h9e3eb359359c7897
at /rustc/4b91a6ea7258a947e59c6522cd5898e7c0a6a88f/library/core/src/ops/function.rs:248:5
57: 0x56291e9cf5f3 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h1680342795a2dc08
at /rustc/4b91a6ea7258a947e59c6522cd5898e7c0a6a88f/library/alloc/src/boxed.rs:1951:9
58: 0x56291e9cf5f3 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h45204a69827b0e83
at /rustc/4b91a6ea7258a947e59c6522cd5898e7c0a6a88f/library/alloc/src/boxed.rs:1951:9
59: 0x56291e9cf5f3 - std::sys::unix::thread::Thread::new::thread_start::h5d4e11bbda4161c8
at /rustc/4b91a6ea7258a947e59c6522cd5898e7c0a6a88f/library/std/src/sys/unix/thread.rs:108:17
60: 0x7f595c40b609 - start_thread
at /build/glibc-SzIz7B/glibc-2.31/nptl/pthread_create.c:477:8
61: 0x7f595c1db133 - clone
at /build/glibc-SzIz7B/glibc-2.31/misc/../sysdeps/unix/sysv/linux/x86_64/clone.S:95
62: 0x0 - <unknown>
thread panicked while panicking. aborting.
It seems that the pretty_assertions_sorted crate has a panic! in one of its functions, causing a double panic.
Disclaimer - personal opinion: Such an error is an indication of bad programming style, in my opinion. I'd avoid the crate for now. (time of writing: pretty_assertions_sorted 1.2.0)
Here is the full reproduction of the error:
#[cfg(test)]
mod test {
use pretty_assertions_sorted::{assert_eq_sorted, Comparison, SortedDebug};
use serde_json::json;
#[test]
fn double_panic_highlevel() {
assert_eq_sorted!(json!({"a":0}), json!(null));
}
#[test]
fn double_panic_midlevel1() {
format!(
"{}",
Comparison::new(
&SortedDebug::new(json!({"a":0})),
&SortedDebug::new(json!(null))
)
);
}
#[test]
fn double_panic_midlevel2() {
format!("{:#?}", &SortedDebug::new(json!({"a":0})));
}
#[test]
fn double_panic_lowlevel1() {
darrentsung_debug_parser::parse(&format!("{:?}", json!({"a":0}))).unwrap();
}
#[test]
fn double_panic_lowlevel2() {
darrentsung_debug_parser::parse("Object {\"a\": Number(0)}").unwrap();
}
}
