Add some track_caller info to precondition panics #129658

saethlin · 2024-08-27T15:06:59Z

Thought of this while looking at #129642 (comment)

saethlin · 2024-08-27T16:30:13Z

bors · 2024-08-27T16:31:24Z

⌛ Trying commit 18e2a95 with merge 7798f9b...

Add some track_caller info to precondition panics r? `@ghost` Thought of this while looking at rust-lang#129642 (comment)

library/core/src/panicking.rs

bors · 2024-08-27T18:24:54Z

☀️ Try build successful - checks-actions
Build commit: 7798f9b (7798f9b35d0cd727f26631c015620e3dfe62e1f6)

rust-timer · 2024-08-27T19:39:49Z

Finished benchmarking commit (7798f9b): comparison URL.

Overall result: no relevant changes - no action needed

Benchmarking this pull request likely means that it is perf-sensitive, so we're automatically marking it as not fit for rolling up. While you can manually mark this PR as fit for rollup, we strongly recommend not doing so since this PR may lead to changes in compiler perf.

@bors rollup=never
@rustbot label: -S-waiting-on-perf -perf-regression

Instruction count

This benchmark run did not return any relevant results for this metric.

Max RSS (memory usage)

Results (secondary -2.7%)

This is a less reliable metric that may be of interest but was not used to determine the overall result at the top of this comment.

	mean	range	count
Regressions ❌ (primary)	-	-	0
Regressions ❌ (secondary)	-	-	0
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-2.7%	[-3.1%, -2.3%]	2
All ❌✅ (primary)	-	-	0

Cycles

This benchmark run did not return any relevant results for this metric.

Binary size

Results (primary 0.1%, secondary 0.1%)

This is a less reliable metric that may be of interest but was not used to determine the overall result at the top of this comment.

	mean	range	count
Regressions ❌ (primary)	0.1%	[0.0%, 0.6%]	47
Regressions ❌ (secondary)	0.1%	[0.0%, 0.4%]	35
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-	-	0
All ❌✅ (primary)	0.1%	[0.0%, 0.6%]	47

Bootstrap: 749.925s -> 752.783s (0.38%)
Artifact size: 338.74 MiB -> 338.79 MiB (0.02%)

saethlin · 2024-08-27T19:55:42Z

That looks possibly acceptable. Let's just see how bad this becomes?

@bors try @rust-timer queue

bors · 2024-08-27T19:56:53Z

⌛ Trying commit 197c7b3 with merge 0e77a71...

Add some track_caller info to precondition panics r? `@ghost` Thought of this while looking at rust-lang#129642 (comment)

bors · 2024-08-27T21:50:53Z

☀️ Try build successful - checks-actions
Build commit: 0e77a71 (0e77a71199b6b2f7fac064cdf0b55e84d7ccca61)

rust-timer · 2024-08-27T23:24:55Z

Finished benchmarking commit (0e77a71): comparison URL.

Overall result: ❌✅ regressions and improvements - ACTION NEEDED

Benchmarking this pull request likely means that it is perf-sensitive, so we're automatically marking it as not fit for rolling up. While you can manually mark this PR as fit for rollup, we strongly recommend not doing so since this PR may lead to changes in compiler perf.

Next Steps: If you can justify the regressions found in this try perf run, please indicate this with @rustbot label: +perf-regression-triaged along with sufficient written justification. If you cannot justify the regressions please fix the regressions and do another perf run. If the next run shows neutral or positive results, the label will be automatically removed.

@bors rollup=never
@rustbot label: -S-waiting-on-perf +perf-regression

Instruction count

This is a highly reliable metric that was used to determine the overall result at the top of this comment.

	mean	range	count
Regressions ❌ (primary)	0.2%	[0.2%, 0.2%]	1
Regressions ❌ (secondary)	-	-	0
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-0.3%	[-0.3%, -0.3%]	6
All ❌✅ (primary)	0.2%	[0.2%, 0.2%]	1

Max RSS (memory usage)

This benchmark run did not return any relevant results for this metric.

Cycles

This benchmark run did not return any relevant results for this metric.

Binary size

Results (primary 0.3%, secondary 0.1%)

This is a less reliable metric that may be of interest but was not used to determine the overall result at the top of this comment.

	mean	range	count
Regressions ❌ (primary)	0.3%	[0.0%, 1.4%]	65
Regressions ❌ (secondary)	0.1%	[0.0%, 0.5%]	35
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-	-	0
All ❌✅ (primary)	0.3%	[0.0%, 1.4%]	65

Bootstrap: 749.925s -> 751.312s (0.18%)
Artifact size: 338.74 MiB -> 338.81 MiB (0.02%)

bors · 2025-01-21T02:44:26Z

☔ The latest upstream changes (presumably #134286) made this pull request unmergeable. Please resolve the merge conflicts.

bors · 2025-02-03T20:12:19Z

☔ The latest upstream changes (presumably #136481) made this pull request unmergeable. Please resolve the merge conflicts.

bors · 2025-02-14T00:19:59Z

☔ The latest upstream changes (presumably #134633) made this pull request unmergeable. Please resolve the merge conflicts.

saethlin · 2025-02-14T03:33:50Z

@bors try @rust-timer queue

Add some track_caller info to precondition panics r? `@ghost` Thought of this while looking at rust-lang#129642 (comment)

bors · 2025-02-14T03:35:02Z

⌛ Trying commit b45b561 with merge 16510aa...

bors · 2025-02-14T05:22:16Z

☀️ Try build successful - checks-actions
Build commit: 16510aa (16510aa153539b45d265e4c5030971d50eaa9b08)

rust-timer · 2025-02-14T06:40:06Z

Finished benchmarking commit (16510aa): comparison URL.

Overall result: ❌ regressions - please read the text below

Benchmarking this pull request likely means that it is perf-sensitive, so we're automatically marking it as not fit for rolling up. While you can manually mark this PR as fit for rollup, we strongly recommend not doing so since this PR may lead to changes in compiler perf.

Next Steps: If you can justify the regressions found in this try perf run, please indicate this with @rustbot label: +perf-regression-triaged along with sufficient written justification. If you cannot justify the regressions please fix the regressions and do another perf run. If the next run shows neutral or positive results, the label will be automatically removed.

@bors rollup=never
@rustbot label: -S-waiting-on-perf +perf-regression

Instruction count

This is the most reliable metric that we have; it was used to determine the overall result at the top of this comment. However, even this metric can sometimes exhibit noise.

	mean	range	count
Regressions ❌ (primary)	2.1%	[0.2%, 7.4%]	4
Regressions ❌ (secondary)	-	-	0
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-	-	0
All ❌✅ (primary)	2.1%	[0.2%, 7.4%]	4

Max RSS (memory usage)

Results (primary 6.4%)

This is a less reliable metric that may be of interest but was not used to determine the overall result at the top of this comment.

	mean	range	count
Regressions ❌ (primary)	6.4%	[3.1%, 9.8%]	2
Regressions ❌ (secondary)	-	-	0
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-	-	0
All ❌✅ (primary)	6.4%	[3.1%, 9.8%]	2

Cycles

Results (primary 9.7%)

This is a less reliable metric that may be of interest but was not used to determine the overall result at the top of this comment.

	mean	range	count
Regressions ❌ (primary)	9.7%	[9.7%, 9.7%]	1
Regressions ❌ (secondary)	-	-	0
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-	-	0
All ❌✅ (primary)	9.7%	[9.7%, 9.7%]	1

Binary size

Results (primary 0.4%, secondary 0.2%)

This is a less reliable metric that may be of interest but was not used to determine the overall result at the top of this comment.

	mean	range	count
Regressions ❌ (primary)	0.4%	[0.0%, 1.4%]	67
Regressions ❌ (secondary)	0.2%	[0.0%, 0.6%]	31
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-	-	0
All ❌✅ (primary)	0.4%	[0.0%, 1.4%]	67

Bootstrap: 789.427s -> 790.091s (0.08%)
Artifact size: 347.75 MiB -> 347.78 MiB (0.01%)

bors · 2025-03-15T08:54:43Z

☔ The latest upstream changes (presumably #138379) made this pull request unmergeable. Please resolve the merge conflicts.

bors · 2025-04-10T23:44:32Z

☔ The latest upstream changes (presumably #137412) made this pull request unmergeable. Please resolve the merge conflicts.

bors · 2025-04-24T23:14:52Z

☔ The latest upstream changes (presumably #140256) made this pull request unmergeable. Please resolve the merge conflicts.

rust-log-analyzer · 2025-04-25T23:27:03Z

The job x86_64-gnu-tools failed! Check out the build log: (web) (plain)

Click to see the possible cause of the failure (guessed by this bot)

tests/fail/function_calls/exported_symbol_bad_unwind2.rs (revision `definition`) ... FAILED
tests/fail/function_calls/exported_symbol_bad_unwind2.rs (revision `both`) ... FAILED

FAILED TEST: tests/fail/intrinsics/uninit_uninhabited_type.rs
command: MIRI_ENV_VAR_TEST="0" MIRI_TEMP="/tmp/miri-uitest-crWDme" RUST_BACKTRACE="1" "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2/bin/miri" "--error-format=json" "--sysroot=/checkout/obj/build/x86_64-unknown-linux-gnu/miri-sysroot" "-Dwarnings" "-Dunused" "-Ainternal_features" "-Zui-testing" "--out-dir" "/checkout/obj/build/x86_64-unknown-linux-gnu/stage1-tools/miri_ui/0/tests/fail/intrinsics" "tests/fail/intrinsics/uninit_uninhabited_type.rs" "--edition" "2021"

error: actual output differed from expected
Execute `./miri test --bless` to update `tests/fail/intrinsics/uninit_uninhabited_type.stderr` to the actual output
--- tests/fail/intrinsics/uninit_uninhabited_type.stderr
+++ <stderr output>
 
-thread 'main' panicked at tests/fail/intrinsics/uninit_uninhabited_type.rs:LL:CC:
+thread 'main' panicked at RUSTLIB/core/src/panicking.rs:LL:CC:
 aborted execution: attempted to instantiate uninhabited type `!`
 note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
... 12 lines skipped ...
    = note: inside `std::sys::backtrace::__rust_end_short_backtrace::<{closure@std::panicking::begin_panic_handler::{closure#0}}, !>` at RUSTLIB/std/src/sys/backtrace.rs:LL:CC
    = note: inside `std::panicking::begin_panic_handler` at RUSTLIB/std/src/panicking.rs:LL:CC
+   = note: inside `core::panicking::panic_nounwind` at RUSTLIB/core/src/panicking.rs:LL:CC
 note: inside `main`
   --> tests/fail/intrinsics/uninit_uninhabited_type.rs:LL:CC
... 6 lines skipped ...
---

thread 'main' panicked at /checkout/library/core/src/panicking.rs:218:5:
aborted execution: attempted to instantiate uninhabited type `!`
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
note: in Miri, you may have to set `MIRIFLAGS=-Zmiri-env-forward=RUST_BACKTRACE` for the environment variable to have an effect
thread caused non-unwinding panic. aborting.
error: abnormal termination: the program aborted execution
##[error]  --> /checkout/library/std/src/sys/pal/unix/mod.rs:366:14
   |
LL |     unsafe { libc::abort() }
   |              ^^^^^^^^^^^^^ the program aborted execution
   |
   = note: BACKTRACE:
   = note: inside `std::sys::pal::unix::abort_internal` at /checkout/library/std/src/sys/pal/unix/mod.rs:366:14: 366:27
   = note: inside `std::panicking::rust_panic_with_hook` at /checkout/library/std/src/panicking.rs:855:9: 855:37
   = note: inside closure at /checkout/library/std/src/panicking.rs:699:13: 704:14
   = note: inside `std::sys::backtrace::__rust_end_short_backtrace::<{closure@std::panicking::begin_panic_handler::{closure#0}}, !>` at /checkout/library/std/src/sys/backtrace.rs:168:18: 168:21
   = note: inside `std::panicking::begin_panic_handler` at /checkout/library/std/src/panicking.rs:697:5: 713:7
   = note: inside `core::panicking::panic_nounwind` at /checkout/library/core/src/panicking.rs:218:5: 218:91
note: inside `main`
  --> tests/fail/intrinsics/uninit_uninhabited_type.rs:10:22
   |
LL |     let _ = unsafe { std::mem::uninitialized::<!>() };
   |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

note: some details are omitted, run with `MIRIFLAGS=-Zmiri-backtrace=full` for a verbose backtrace

error: aborting due to 1 previous error
---

thread 'main' panicked at /checkout/library/core/src/panicking.rs:218:5:
aborted execution: attempted to instantiate uninhabited type `!`
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
note: in Miri, you may have to set `MIRIFLAGS=-Zmiri-env-forward=RUST_BACKTRACE` for the environment variable to have an effect
thread caused non-unwinding panic. aborting.
error: abnormal termination: the program aborted execution
##[error]  --> /checkout/library/std/src/sys/pal/unix/mod.rs:366:14
   |
LL |     unsafe { libc::abort() }
   |              ^^^^^^^^^^^^^ the program aborted execution
   |
   = note: BACKTRACE:
   = note: inside `std::sys::pal::unix::abort_internal` at /checkout/library/std/src/sys/pal/unix/mod.rs:366:14: 366:27
   = note: inside `std::panicking::rust_panic_with_hook` at /checkout/library/std/src/panicking.rs:855:9: 855:37
   = note: inside closure at /checkout/library/std/src/panicking.rs:699:13: 704:14
   = note: inside `std::sys::backtrace::__rust_end_short_backtrace::<{closure@std::panicking::begin_panic_handler::{closure#0}}, !>` at /checkout/library/std/src/sys/backtrace.rs:168:18: 168:21
   = note: inside `std::panicking::begin_panic_handler` at /checkout/library/std/src/panicking.rs:697:5: 713:7
   = note: inside `core::panicking::panic_nounwind` at /checkout/library/core/src/panicking.rs:218:5: 218:91
note: inside `main`
  --> tests/fail/intrinsics/uninit_uninhabited_type.rs:10:22
   |
LL |     let _ = unsafe { std::mem::uninitialized::<!>() };
   |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

note: some details are omitted, run with `MIRIFLAGS=-Zmiri-backtrace=full` for a verbose backtrace

error: aborting due to 1 previous error


full stdout:



FAILED TEST: tests/fail/intrinsics/zero_fn_ptr.rs
command: MIRI_ENV_VAR_TEST="0" MIRI_TEMP="/tmp/miri-uitest-crWDme" RUST_BACKTRACE="1" "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2/bin/miri" "--error-format=json" "--sysroot=/checkout/obj/build/x86_64-unknown-linux-gnu/miri-sysroot" "-Dwarnings" "-Dunused" "-Ainternal_features" "-Zui-testing" "--out-dir" "/checkout/obj/build/x86_64-unknown-linux-gnu/stage1-tools/miri_ui/0/tests/fail/intrinsics" "tests/fail/intrinsics/zero_fn_ptr.rs" "--edition" "2021"

error: actual output differed from expected
Execute `./miri test --bless` to update `tests/fail/intrinsics/zero_fn_ptr.stderr` to the actual output
--- tests/fail/intrinsics/zero_fn_ptr.stderr
+++ <stderr output>
 
-thread 'main' panicked at tests/fail/intrinsics/zero_fn_ptr.rs:LL:CC:
+thread 'main' panicked at RUSTLIB/core/src/panicking.rs:LL:CC:
 aborted execution: attempted to zero-initialize type `fn()`, which is invalid
 note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
... 12 lines skipped ...
    = note: inside `std::sys::backtrace::__rust_end_short_backtrace::<{closure@std::panicking::begin_panic_handler::{closure#0}}, !>` at RUSTLIB/std/src/sys/backtrace.rs:LL:CC
    = note: inside `std::panicking::begin_panic_handler` at RUSTLIB/std/src/panicking.rs:LL:CC
+   = note: inside `core::panicking::panic_nounwind` at RUSTLIB/core/src/panicking.rs:LL:CC
 note: inside `main`
   --> tests/fail/intrinsics/zero_fn_ptr.rs:LL:CC
... 6 lines skipped ...
---

thread 'main' panicked at /checkout/library/core/src/panicking.rs:218:5:
aborted execution: attempted to zero-initialize type `fn()`, which is invalid
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
note: in Miri, you may have to set `MIRIFLAGS=-Zmiri-env-forward=RUST_BACKTRACE` for the environment variable to have an effect
thread caused non-unwinding panic. aborting.
error: abnormal termination: the program aborted execution
##[error]  --> /checkout/library/std/src/sys/pal/unix/mod.rs:366:14
   |
LL |     unsafe { libc::abort() }
   |              ^^^^^^^^^^^^^ the program aborted execution
   |
   = note: BACKTRACE:
   = note: inside `std::sys::pal::unix::abort_internal` at /checkout/library/std/src/sys/pal/unix/mod.rs:366:14: 366:27
   = note: inside `std::panicking::rust_panic_with_hook` at /checkout/library/std/src/panicking.rs:855:9: 855:37
   = note: inside closure at /checkout/library/std/src/panicking.rs:699:13: 704:14
   = note: inside `std::sys::backtrace::__rust_end_short_backtrace::<{closure@std::panicking::begin_panic_handler::{closure#0}}, !>` at /checkout/library/std/src/sys/backtrace.rs:168:18: 168:21
   = note: inside `std::panicking::begin_panic_handler` at /checkout/library/std/src/panicking.rs:697:5: 713:7
   = note: inside `core::panicking::panic_nounwind` at /checkout/library/core/src/panicking.rs:218:5: 218:91
note: inside `main`
  --> tests/fail/intrinsics/zero_fn_ptr.rs:9:22
   |
LL |     let _ = unsafe { std::mem::zeroed::<fn()>() };
   |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^

note: some details are omitted, run with `MIRIFLAGS=-Zmiri-backtrace=full` for a verbose backtrace

error: aborting due to 1 previous error
---

thread 'main' panicked at /checkout/library/core/src/panicking.rs:218:5:
aborted execution: attempted to zero-initialize type `fn()`, which is invalid
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
note: in Miri, you may have to set `MIRIFLAGS=-Zmiri-env-forward=RUST_BACKTRACE` for the environment variable to have an effect
thread caused non-unwinding panic. aborting.
error: abnormal termination: the program aborted execution
##[error]  --> /checkout/library/std/src/sys/pal/unix/mod.rs:366:14
   |
LL |     unsafe { libc::abort() }
   |              ^^^^^^^^^^^^^ the program aborted execution
   |
   = note: BACKTRACE:
   = note: inside `std::sys::pal::unix::abort_internal` at /checkout/library/std/src/sys/pal/unix/mod.rs:366:14: 366:27
   = note: inside `std::panicking::rust_panic_with_hook` at /checkout/library/std/src/panicking.rs:855:9: 855:37
   = note: inside closure at /checkout/library/std/src/panicking.rs:699:13: 704:14
   = note: inside `std::sys::backtrace::__rust_end_short_backtrace::<{closure@std::panicking::begin_panic_handler::{closure#0}}, !>` at /checkout/library/std/src/sys/backtrace.rs:168:18: 168:21
   = note: inside `std::panicking::begin_panic_handler` at /checkout/library/std/src/panicking.rs:697:5: 713:7
   = note: inside `core::panicking::panic_nounwind` at /checkout/library/core/src/panicking.rs:218:5: 218:91
note: inside `main`
  --> tests/fail/intrinsics/zero_fn_ptr.rs:9:22
   |
LL |     let _ = unsafe { std::mem::zeroed::<fn()>() };
   |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^

note: some details are omitted, run with `MIRIFLAGS=-Zmiri-backtrace=full` for a verbose backtrace

error: aborting due to 1 previous error


full stdout:



FAILED TEST: tests/fail/terminate-terminator.rs
command: MIRI_ENV_VAR_TEST="0" MIRI_TEMP="/tmp/miri-uitest-crWDme" RUST_BACKTRACE="1" "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2/bin/miri" "--error-format=json" "--sysroot=/checkout/obj/build/x86_64-unknown-linux-gnu/miri-sysroot" "-Dwarnings" "-Dunused" "-Ainternal_features" "-Zui-testing" "--out-dir" "/checkout/obj/build/x86_64-unknown-linux-gnu/stage1-tools/miri_ui/0/tests/fail" "tests/fail/terminate-terminator.rs" "-Zmir-opt-level=3" "-Zinline-mir-hint-threshold=1000" "--edition" "2021"

error: actual output differed from expected
Execute `./miri test --bless` to update `tests/fail/terminate-terminator.stderr` to the actual output
--- tests/fail/terminate-terminator.stderr
+++ <stderr output>
 warning: You have explicitly enabled MIR optimizations, overriding Miri's default which is to completely disable them. Any optimizations may hide UB that Miri would otherwise detect, and it is not necessarily possible to predict what kind of UB will be missed. If you are enabling optimizations to make Miri run faster, we advise using cfg(miri) to shrink your workload instead. The performance benefit of enabling MIR optimizations is usually marginal at best.
 
... 20 lines skipped ...
    = note: inside `std::sys::backtrace::__rust_end_short_backtrace::<{closure@std::panicking::begin_panic_handler::{closure#0}}, !>` at RUSTLIB/std/src/sys/backtrace.rs:LL:CC
    = note: inside `std::panicking::begin_panic_handler` at RUSTLIB/std/src/panicking.rs:LL:CC
+   = note: inside `core::panicking::panic_nounwind` at RUSTLIB/core/src/panicking.rs:LL:CC
    = note: inside `core::panicking::panic_cannot_unwind` at RUSTLIB/core/src/panicking.rs:LL:CC
 note: inside `has_cleanup`
... 20 lines skipped ...
 error: aborting due to 1 previous error; 1 warning emitted
 

Full unnormalized output:
warning: You have explicitly enabled MIR optimizations, overriding Miri's default which is to completely disable them. Any optimizations may hide UB that Miri would otherwise detect, and it is not necessarily possible to predict what kind of UB will be missed. If you are enabling optimizations to make Miri run faster, we advise using cfg(miri) to shrink your workload instead. The performance benefit of enabling MIR optimizations is usually marginal at best.


thread 'main' panicked at tests/fail/terminate-terminator.rs:19:5:
explicit panic
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
note: in Miri, you may have to set `MIRIFLAGS=-Zmiri-env-forward=RUST_BACKTRACE` for the environment variable to have an effect

thread 'main' panicked at /checkout/library/core/src/panicking.rs:218:5:
panic in a function that cannot unwind
stack backtrace:
   0:           0xfa9edc - std::backtrace_rs::backtrace::miri::trace_unsynchronized::<&mut {closure@std::sys::backtrace::_print_fmt::{closure#1}}>
                               at /checkout/library/std/src/../../backtrace/src/backtrace/miri.rs:108:9
   1:           0xfa9a2e - std::backtrace_rs::backtrace::miri::trace::<&mut {closure@std::sys::backtrace::_print_fmt::{closure#1}}>
                               at /checkout/library/std/src/../../backtrace/src/backtrace/miri.rs:65:14
   2:           0xfa81c9 - std::backtrace_rs::backtrace::trace_unsynchronized::<{closure@std::sys::backtrace::_print_fmt::{closure#1}}>
                               at /checkout/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
   3:           0xee18e0 - std::sys::backtrace::_print_fmt
                               at /checkout/library/std/src/sys/backtrace.rs:66:9
   4:           0xee14c3 - <std::sys::backtrace::BacktraceLock<'_>::print::DisplayBacktrace as std::fmt::Display>::fmt
                               at /checkout/library/std/src/sys/backtrace.rs:39:26
---
  12:           0x1d633b - std::panicking::rust_panic_with_hook
                               at /checkout/library/std/src/panicking.rs:833:13
  13:           0x1d4ef4 - std::panicking::begin_panic_handler::{closure#0}
                               at /checkout/library/std/src/panicking.rs:699:13
  14:           0xee2781 - std::sys::backtrace::__rust_end_short_backtrace::<{closure@std::panicking::begin_panic_handler::{closure#0}}, !>
                               at /checkout/library/std/src/sys/backtrace.rs:168:18
  15:           0x1d4e98 - std::panicking::begin_panic_handler
                               at /checkout/library/std/src/panicking.rs:697:5
  16:           0x19a761 - core::panicking::panic_nounwind_fmt::runtime
                               at /checkout/library/core/src/panicking.rs:117:22
  17:           0x3aca8c - core::panicking::panic_nounwind_fmt
---
  28:            0x9bb58 - std::panic::catch_unwind::<&dyn std::ops::Fn() -> i32 + std::marker::Sync + std::panic::RefUnwindSafe, i32>
                               at /checkout/library/std/src/panic.rs:359:14
  29:           0x1b39f2 - std::rt::lang_start_internal::{closure#0}
                               at /checkout/library/std/src/rt.rs:168:24
  30:           0x1d40dc - std::panicking::r#try::do_call::<{closure@std::rt::lang_start_internal::{closure#0}}, isize>
                               at /checkout/library/std/src/panicking.rs:589:40
  31:           0x1d3a57 - std::panicking::r#try::<isize, {closure@std::rt::lang_start_internal::{closure#0}}>
                               at /checkout/library/std/src/panicking.rs:552:19
  32:            0x9bb7d - std::panic::catch_unwind::<{closure@std::rt::lang_start_internal::{closure#0}}, isize>
                               at /checkout/library/std/src/panic.rs:359:14
  33:           0x1b3978 - std::rt::lang_start_internal
                               at /checkout/library/std/src/rt.rs:164:5
  34:           0x1b3e30 - std::rt::lang_start::<()>
                               at /checkout/library/std/src/rt.rs:198:5
---
   = note: BACKTRACE:
   = note: inside `std::sys::pal::unix::abort_internal` at /checkout/library/std/src/sys/pal/unix/mod.rs:366:14: 366:27
   = note: inside `std::panicking::rust_panic_with_hook` at /checkout/library/std/src/panicking.rs:855:9: 855:37
   = note: inside closure at /checkout/library/std/src/panicking.rs:699:13: 704:14
   = note: inside `std::sys::backtrace::__rust_end_short_backtrace::<{closure@std::panicking::begin_panic_handler::{closure#0}}, !>` at /checkout/library/std/src/sys/backtrace.rs:168:18: 168:21
   = note: inside `std::panicking::begin_panic_handler` at /checkout/library/std/src/panicking.rs:697:5: 713:7
   = note: inside `core::panicking::panic_nounwind` at /checkout/library/core/src/panicking.rs:218:5: 218:91
   = note: inside `core::panicking::panic_cannot_unwind` at /checkout/library/core/src/panicking.rs:323:5: 323:61
note: inside `has_cleanup`
  --> tests/fail/terminate-terminator.rs:17:1
---



full stderr:
warning: You have explicitly enabled MIR optimizations, overriding Miri's default which is to completely disable them. Any optimizations may hide UB that Miri would otherwise detect, and it is not necessarily possible to predict what kind of UB will be missed. If you are enabling optimizations to make Miri run faster, we advise using cfg(miri) to shrink your workload instead. The performance benefit of enabling MIR optimizations is usually marginal at best.


thread 'main' panicked at tests/fail/terminate-terminator.rs:19:5:
explicit panic
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
note: in Miri, you may have to set `MIRIFLAGS=-Zmiri-env-forward=RUST_BACKTRACE` for the environment variable to have an effect

thread 'main' panicked at /checkout/library/core/src/panicking.rs:218:5:
panic in a function that cannot unwind
stack backtrace:
   0:           0xfa9edc - std::backtrace_rs::backtrace::miri::trace_unsynchronized::<&mut {closure@std::sys::backtrace::_print_fmt::{closure#1}}>
                               at /checkout/library/std/src/../../backtrace/src/backtrace/miri.rs:108:9
   1:           0xfa9a2e - std::backtrace_rs::backtrace::miri::trace::<&mut {closure@std::sys::backtrace::_print_fmt::{closure#1}}>
                               at /checkout/library/std/src/../../backtrace/src/backtrace/miri.rs:65:14
   2:           0xfa81c9 - std::backtrace_rs::backtrace::trace_unsynchronized::<{closure@std::sys::backtrace::_print_fmt::{closure#1}}>
                               at /checkout/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
   3:           0xee18e0 - std::sys::backtrace::_print_fmt
                               at /checkout/library/std/src/sys/backtrace.rs:66:9
   4:           0xee14c3 - <std::sys::backtrace::BacktraceLock<'_>::print::DisplayBacktrace as std::fmt::Display>::fmt
                               at /checkout/library/std/src/sys/backtrace.rs:39:26
---
  12:           0x1d633b - std::panicking::rust_panic_with_hook
                               at /checkout/library/std/src/panicking.rs:833:13
  13:           0x1d4ef4 - std::panicking::begin_panic_handler::{closure#0}
                               at /checkout/library/std/src/panicking.rs:699:13
  14:           0xee2781 - std::sys::backtrace::__rust_end_short_backtrace::<{closure@std::panicking::begin_panic_handler::{closure#0}}, !>
                               at /checkout/library/std/src/sys/backtrace.rs:168:18
  15:           0x1d4e98 - std::panicking::begin_panic_handler
                               at /checkout/library/std/src/panicking.rs:697:5
  16:           0x19a761 - core::panicking::panic_nounwind_fmt::runtime
                               at /checkout/library/core/src/panicking.rs:117:22
  17:           0x3aca8c - core::panicking::panic_nounwind_fmt
---
  28:            0x9bb58 - std::panic::catch_unwind::<&dyn std::ops::Fn() -> i32 + std::marker::Sync + std::panic::RefUnwindSafe, i32>
                               at /checkout/library/std/src/panic.rs:359:14
  29:           0x1b39f2 - std::rt::lang_start_internal::{closure#0}
                               at /checkout/library/std/src/rt.rs:168:24
  30:           0x1d40dc - std::panicking::r#try::do_call::<{closure@std::rt::lang_start_internal::{closure#0}}, isize>
                               at /checkout/library/std/src/panicking.rs:589:40
  31:           0x1d3a57 - std::panicking::r#try::<isize, {closure@std::rt::lang_start_internal::{closure#0}}>
                               at /checkout/library/std/src/panicking.rs:552:19
  32:            0x9bb7d - std::panic::catch_unwind::<{closure@std::rt::lang_start_internal::{closure#0}}, isize>
                               at /checkout/library/std/src/panic.rs:359:14
  33:           0x1b3978 - std::rt::lang_start_internal
                               at /checkout/library/std/src/rt.rs:164:5
  34:           0x1b3e30 - std::rt::lang_start::<()>
                               at /checkout/library/std/src/rt.rs:198:5
---
   = note: BACKTRACE:
   = note: inside `std::sys::pal::unix::abort_internal` at /checkout/library/std/src/sys/pal/unix/mod.rs:366:14: 366:27
   = note: inside `std::panicking::rust_panic_with_hook` at /checkout/library/std/src/panicking.rs:855:9: 855:37
   = note: inside closure at /checkout/library/std/src/panicking.rs:699:13: 704:14
   = note: inside `std::sys::backtrace::__rust_end_short_backtrace::<{closure@std::panicking::begin_panic_handler::{closure#0}}, !>` at /checkout/library/std/src/sys/backtrace.rs:168:18: 168:21
   = note: inside `std::panicking::begin_panic_handler` at /checkout/library/std/src/panicking.rs:697:5: 713:7
   = note: inside `core::panicking::panic_nounwind` at /checkout/library/core/src/panicking.rs:218:5: 218:91
   = note: inside `core::panicking::panic_cannot_unwind` at /checkout/library/core/src/panicking.rs:323:5: 323:61
note: inside `has_cleanup`
  --> tests/fail/terminate-terminator.rs:17:1
---



FAILED TEST: tests/fail/unwind-action-terminate.rs
command: MIRI_ENV_VAR_TEST="0" MIRI_TEMP="/tmp/miri-uitest-crWDme" RUST_BACKTRACE="1" "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2/bin/miri" "--error-format=json" "--sysroot=/checkout/obj/build/x86_64-unknown-linux-gnu/miri-sysroot" "-Dwarnings" "-Dunused" "-Ainternal_features" "-Zui-testing" "--out-dir" "/checkout/obj/build/x86_64-unknown-linux-gnu/stage1-tools/miri_ui/0/tests/fail" "tests/fail/unwind-action-terminate.rs" "--edition" "2021"

error: actual output differed from expected
Execute `./miri test --bless` to update `tests/fail/unwind-action-terminate.stderr` to the actual output
--- tests/fail/unwind-action-terminate.stderr
+++ <stderr output>
 
 thread 'main' panicked at tests/fail/unwind-action-terminate.rs:LL:CC:
... 18 lines skipped ...
    = note: inside `std::sys::backtrace::__rust_end_short_backtrace::<{closure@std::panicking::begin_panic_handler::{closure#0}}, !>` at RUSTLIB/std/src/sys/backtrace.rs:LL:CC
    = note: inside `std::panicking::begin_panic_handler` at RUSTLIB/std/src/panicking.rs:LL:CC
+   = note: inside `core::panicking::panic_nounwind` at RUSTLIB/core/src/panicking.rs:LL:CC
    = note: inside `core::panicking::panic_cannot_unwind` at RUSTLIB/core/src/panicking.rs:LL:CC
 note: inside `panic_abort`
... 14 lines skipped ...
---

thread 'main' panicked at tests/fail/unwind-action-terminate.rs:7:5:
explicit panic
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
note: in Miri, you may have to set `MIRIFLAGS=-Zmiri-env-forward=RUST_BACKTRACE` for the environment variable to have an effect

thread 'main' panicked at /checkout/library/core/src/panicking.rs:218:5:
panic in a function that cannot unwind
stack backtrace:
   0:           0xfa93c2 - std::backtrace_rs::backtrace::miri::trace_unsynchronized::<&mut {closure@std::sys::backtrace::_print_fmt::{closure#1}}>
                               at /checkout/library/std/src/../../backtrace/src/backtrace/miri.rs:108:9
   1:           0xfa8f06 - std::backtrace_rs::backtrace::miri::trace::<&mut {closure@std::sys::backtrace::_print_fmt::{closure#1}}>
                               at /checkout/library/std/src/../../backtrace/src/backtrace/miri.rs:65:14
   2:           0xfa769f - std::backtrace_rs::backtrace::trace_unsynchronized::<{closure@std::sys::backtrace::_print_fmt::{closure#1}}>
                               at /checkout/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
   3:           0xee0db2 - std::sys::backtrace::_print_fmt
                               at /checkout/library/std/src/sys/backtrace.rs:66:9
   4:           0xee099b - <std::sys::backtrace::BacktraceLock<'_>::print::DisplayBacktrace as std::fmt::Display>::fmt
                               at /checkout/library/std/src/sys/backtrace.rs:39:26
---
  12:           0x1d580c - std::panicking::rust_panic_with_hook
                               at /checkout/library/std/src/panicking.rs:833:13
  13:           0x1d43be - std::panicking::begin_panic_handler::{closure#0}
                               at /checkout/library/std/src/panicking.rs:699:13
  14:           0xee1c46 - std::sys::backtrace::__rust_end_short_backtrace::<{closure@std::panicking::begin_panic_handler::{closure#0}}, !>
                               at /checkout/library/std/src/sys/backtrace.rs:168:18
  15:           0x1d435f - std::panicking::begin_panic_handler
                               at /checkout/library/std/src/panicking.rs:697:5
  16:           0x199c27 - core::panicking::panic_nounwind_fmt::runtime
                               at /checkout/library/core/src/panicking.rs:117:22
  17:           0x3abf4d - core::panicking::panic_nounwind_fmt
---
  28:            0x9b019 - std::panic::catch_unwind::<&dyn std::ops::Fn() -> i32 + std::marker::Sync + std::panic::RefUnwindSafe, i32>
                               at /checkout/library/std/src/panic.rs:359:14
  29:           0x1b2eb1 - std::rt::lang_start_internal::{closure#0}
                               at /checkout/library/std/src/rt.rs:168:24
  30:           0x1d359b - std::panicking::r#try::do_call::<{closure@std::rt::lang_start_internal::{closure#0}}, isize>
                               at /checkout/library/std/src/panicking.rs:589:40
  31:           0x1d2f1f - std::panicking::r#try::<isize, {closure@std::rt::lang_start_internal::{closure#0}}>
                               at /checkout/library/std/src/panicking.rs:552:19
  32:            0x9b03c - std::panic::catch_unwind::<{closure@std::rt::lang_start_internal::{closure#0}}, isize>
                               at /checkout/library/std/src/panic.rs:359:14
  33:           0x1b2e35 - std::rt::lang_start_internal
                               at /checkout/library/std/src/rt.rs:164:5
  34:           0x1b32ea - std::rt::lang_start::<()>
                               at /checkout/library/std/src/rt.rs:198:5
---
   = note: BACKTRACE:
   = note: inside `std::sys::pal::unix::abort_internal` at /checkout/library/std/src/sys/pal/unix/mod.rs:366:14: 366:27
   = note: inside `std::panicking::rust_panic_with_hook` at /checkout/library/std/src/panicking.rs:855:9: 855:37
   = note: inside closure at /checkout/library/std/src/panicking.rs:699:13: 704:14
   = note: inside `std::sys::backtrace::__rust_end_short_backtrace::<{closure@std::panicking::begin_panic_handler::{closure#0}}, !>` at /checkout/library/std/src/sys/backtrace.rs:168:18: 168:21
   = note: inside `std::panicking::begin_panic_handler` at /checkout/library/std/src/panicking.rs:697:5: 713:7
   = note: inside `core::panicking::panic_nounwind` at /checkout/library/core/src/panicking.rs:218:5: 218:91
   = note: inside `core::panicking::panic_cannot_unwind` at /checkout/library/core/src/panicking.rs:323:5: 323:61
note: inside `panic_abort`
  --> tests/fail/unwind-action-terminate.rs:6:1
---

thread 'main' panicked at tests/fail/unwind-action-terminate.rs:7:5:
explicit panic
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
note: in Miri, you may have to set `MIRIFLAGS=-Zmiri-env-forward=RUST_BACKTRACE` for the environment variable to have an effect

thread 'main' panicked at /checkout/library/core/src/panicking.rs:218:5:
panic in a function that cannot unwind
stack backtrace:
   0:           0xfa93c2 - std::backtrace_rs::backtrace::miri::trace_unsynchronized::<&mut {closure@std::sys::backtrace::_print_fmt::{closure#1}}>
                               at /checkout/library/std/src/../../backtrace/src/backtrace/miri.rs:108:9
   1:           0xfa8f06 - std::backtrace_rs::backtrace::miri::trace::<&mut {closure@std::sys::backtrace::_print_fmt::{closure#1}}>
                               at /checkout/library/std/src/../../backtrace/src/backtrace/miri.rs:65:14
   2:           0xfa769f - std::backtrace_rs::backtrace::trace_unsynchronized::<{closure@std::sys::backtrace::_print_fmt::{closure#1}}>
                               at /checkout/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
   3:           0xee0db2 - std::sys::backtrace::_print_fmt
                               at /checkout/library/std/src/sys/backtrace.rs:66:9
   4:           0xee099b - <std::sys::backtrace::BacktraceLock<'_>::print::DisplayBacktrace as std::fmt::Display>::fmt
                               at /checkout/library/std/src/sys/backtrace.rs:39:26
---
  12:           0x1d580c - std::panicking::rust_panic_with_hook
                               at /checkout/library/std/src/panicking.rs:833:13
  13:           0x1d43be - std::panicking::begin_panic_handler::{closure#0}
                               at /checkout/library/std/src/panicking.rs:699:13
  14:           0xee1c46 - std::sys::backtrace::__rust_end_short_backtrace::<{closure@std::panicking::begin_panic_handler::{closure#0}}, !>
                               at /checkout/library/std/src/sys/backtrace.rs:168:18
  15:           0x1d435f - std::panicking::begin_panic_handler
                               at /checkout/library/std/src/panicking.rs:697:5
  16:           0x199c27 - core::panicking::panic_nounwind_fmt::runtime
                               at /checkout/library/core/src/panicking.rs:117:22
  17:           0x3abf4d - core::panicking::panic_nounwind_fmt
---
  28:            0x9b019 - std::panic::catch_unwind::<&dyn std::ops::Fn() -> i32 + std::marker::Sync + std::panic::RefUnwindSafe, i32>
                               at /checkout/library/std/src/panic.rs:359:14
  29:           0x1b2eb1 - std::rt::lang_start_internal::{closure#0}
                               at /checkout/library/std/src/rt.rs:168:24
  30:           0x1d359b - std::panicking::r#try::do_call::<{closure@std::rt::lang_start_internal::{closure#0}}, isize>
                               at /checkout/library/std/src/panicking.rs:589:40
  31:           0x1d2f1f - std::panicking::r#try::<isize, {closure@std::rt::lang_start_internal::{closure#0}}>
                               at /checkout/library/std/src/panicking.rs:552:19
  32:            0x9b03c - std::panic::catch_unwind::<{closure@std::rt::lang_start_internal::{closure#0}}, isize>
                               at /checkout/library/std/src/panic.rs:359:14
  33:           0x1b2e35 - std::rt::lang_start_internal
                               at /checkout/library/std/src/rt.rs:164:5
  34:           0x1b32ea - std::rt::lang_start::<()>
                               at /checkout/library/std/src/rt.rs:198:5
---
   = note: BACKTRACE:
   = note: inside `std::sys::pal::unix::abort_internal` at /checkout/library/std/src/sys/pal/unix/mod.rs:366:14: 366:27
   = note: inside `std::panicking::rust_panic_with_hook` at /checkout/library/std/src/panicking.rs:855:9: 855:37
   = note: inside closure at /checkout/library/std/src/panicking.rs:699:13: 704:14
   = note: inside `std::sys::backtrace::__rust_end_short_backtrace::<{closure@std::panicking::begin_panic_handler::{closure#0}}, !>` at /checkout/library/std/src/sys/backtrace.rs:168:18: 168:21
   = note: inside `std::panicking::begin_panic_handler` at /checkout/library/std/src/panicking.rs:697:5: 713:7
   = note: inside `core::panicking::panic_nounwind` at /checkout/library/core/src/panicking.rs:218:5: 218:91
   = note: inside `core::panicking::panic_cannot_unwind` at /checkout/library/core/src/panicking.rs:323:5: 323:61
note: inside `panic_abort`
  --> tests/fail/unwind-action-terminate.rs:6:1
---



FAILED TEST: tests/fail/panic/double_panic.rs
command: MIRI_ENV_VAR_TEST="0" MIRI_TEMP="/tmp/miri-uitest-crWDme" RUST_BACKTRACE="1" "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2/bin/miri" "--error-format=json" "--sysroot=/checkout/obj/build/x86_64-unknown-linux-gnu/miri-sysroot" "-Dwarnings" "-Dunused" "-Ainternal_features" "-Zui-testing" "--out-dir" "/checkout/obj/build/x86_64-unknown-linux-gnu/stage1-tools/miri_ui/0/tests/fail/panic" "tests/fail/panic/double_panic.rs" "--edition" "2021"

error: actual output differed from expected
Execute `./miri test --bless` to update `tests/fail/panic/double_panic.stderr` to the actual output
--- tests/fail/panic/double_panic.stderr
+++ <stderr output>
 
 thread 'main' panicked at tests/fail/panic/double_panic.rs:LL:CC:
... 21 lines skipped ...
    = note: inside `std::sys::backtrace::__rust_end_short_backtrace::<{closure@std::panicking::begin_panic_handler::{closure#0}}, !>` at RUSTLIB/std/src/sys/backtrace.rs:LL:CC
    = note: inside `std::panicking::begin_panic_handler` at RUSTLIB/std/src/panicking.rs:LL:CC
+   = note: inside `core::panicking::panic_nounwind_nobacktrace` at RUSTLIB/core/src/panicking.rs:LL:CC
    = note: inside `core::panicking::panic_in_cleanup` at RUSTLIB/core/src/panicking.rs:LL:CC
 note: inside `main`
... 10 lines skipped ...
---

thread 'main' panicked at tests/fail/panic/double_panic.rs:15:5:
first
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
note: in Miri, you may have to set `MIRIFLAGS=-Zmiri-env-forward=RUST_BACKTRACE` for the environment variable to have an effect

thread 'main' panicked at tests/fail/panic/double_panic.rs:10:9:
second
stack backtrace:
   0:           0xfa4cbb - std::backtrace_rs::backtrace::miri::trace_unsynchronized::<&mut {closure@std::sys::backtrace::_print_fmt::{closure#1}}>
                               at /checkout/library/std/src/../../backtrace/src/backtrace/miri.rs:108:9
   1:           0xfa480e - std::backtrace_rs::backtrace::miri::trace::<&mut {closure@std::sys::backtrace::_print_fmt::{closure#1}}>
                               at /checkout/library/std/src/../../backtrace/src/backtrace/miri.rs:65:14
   2:           0xfa2fac - std::backtrace_rs::backtrace::trace_unsynchronized::<{closure@std::sys::backtrace::_print_fmt::{closure#1}}>
                               at /checkout/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
   3:           0xedcc98 - std::sys::backtrace::_print_fmt
                               at /checkout/library/std/src/sys/backtrace.rs:66:9
   4:           0xedc87f - <std::sys::backtrace::BacktraceLock<'_>::print::DisplayBacktrace as std::fmt::Display>::fmt
                               at /checkout/library/std/src/sys/backtrace.rs:39:26
---
  12:           0xdbbe47 - std::panicking::rust_panic_with_hook
                               at /checkout/library/std/src/panicking.rs:833:13
  13:           0xdbaa02 - std::panicking::begin_panic_handler::{closure#0}
                               at /checkout/library/std/src/panicking.rs:699:13
  14:           0xeddb3a - std::sys::backtrace::__rust_end_short_backtrace::<{closure@std::panicking::begin_panic_handler::{closure#0}}, !>
                               at /checkout/library/std/src/sys/backtrace.rs:168:18
  15:           0xdba9a3 - std::panicking::begin_panic_handler
                               at /checkout/library/std/src/panicking.rs:697:5
  16:           0x1953bc - std::rt::panic_fmt
                               at /checkout/library/core/src/panicking.rs:75:14
  17:            0x42b7c - <Foo as std::ops::Drop>::drop
---
  26:            0x96ef5 - std::panic::catch_unwind::<&dyn std::ops::Fn() -> i32 + std::marker::Sync + std::panic::RefUnwindSafe, i32>
                               at /checkout/library/std/src/panic.rs:359:14
  27:           0x1c7408 - std::rt::lang_start_internal::{closure#0}
                               at /checkout/library/std/src/rt.rs:168:24
  28:           0xdb9bc8 - std::panicking::r#try::do_call::<{closure@std::rt::lang_start_internal::{closure#0}}, isize>
                               at /checkout/library/std/src/panicking.rs:589:40
  29:           0xdb9546 - std::panicking::r#try::<isize, {closure@std::rt::lang_start_internal::{closure#0}}>
                               at /checkout/library/std/src/panicking.rs:552:19
  30:            0x96f1c - std::panic::catch_unwind::<{closure@std::rt::lang_start_internal::{closure#0}}, isize>
                               at /checkout/library/std/src/panic.rs:359:14
  31:           0x1c738d - std::rt::lang_start_internal
                               at /checkout/library/std/src/rt.rs:164:5
  32:           0x1c784b - std::rt::lang_start::<()>
                               at /checkout/library/std/src/rt.rs:198:5
---
   = note: BACKTRACE:
   = note: inside `std::sys::pal::unix::abort_internal` at /checkout/library/std/src/sys/pal/unix/mod.rs:366:14: 366:27
   = note: inside `std::panicking::rust_panic_with_hook` at /checkout/library/std/src/panicking.rs:855:9: 855:37
   = note: inside closure at /checkout/library/std/src/panicking.rs:699:13: 704:14
   = note: inside `std::sys::backtrace::__rust_end_short_backtrace::<{closure@std::panicking::begin_panic_handler::{closure#0}}, !>` at /checkout/library/std/src/sys/backtrace.rs:168:18: 168:21
   = note: inside `std::panicking::begin_panic_handler` at /checkout/library/std/src/panicking.rs:697:5: 713:7
   = note: inside `core::panicking::panic_nounwind_nobacktrace` at /checkout/library/core/src/panicking.rs:226:5: 226:90
   = note: inside `core::panicking::panic_in_cleanup` at /checkout/library/core/src/panicking.rs:339:5: 339:71
note: inside `main`
  --> tests/fail/panic/double_panic.rs:13:1
---

thread 'main' panicked at tests/fail/panic/double_panic.rs:15:5:
first
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
note: in Miri, you may have to set `MIRIFLAGS=-Zmiri-env-forward=RUST_BACKTRACE` for the environment variable to have an effect

thread 'main' panicked at tests/fail/panic/double_panic.rs:10:9:
second
stack backtrace:
   0:           0xfa4cbb - std::backtrace_rs::backtrace::miri::trace_unsynchronized::<&mut {closure@std::sys::backtrace::_print_fmt::{closure#1}}>
                               at /checkout/library/std/src/../../backtrace/src/backtrace/miri.rs:108:9
   1:           0xfa480e - std::backtrace_rs::backtrace::miri::trace::<&mut {closure@std::sys::backtrace::_print_fmt::{closure#1}}>
                               at /checkout/library/std/src/../../backtrace/src/backtrace/miri.rs:65:14
   2:           0xfa2fac - std::backtrace_rs::backtrace::trace_unsynchronized::<{closure@std::sys::backtrace::_print_fmt::{closure#1}}>
                               at /checkout/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
   3:           0xedcc98 - std::sys::backtrace::_print_fmt
                               at /checkout/library/std/src/sys/backtrace.rs:66:9
   4:           0xedc87f - <std::sys::backtrace::BacktraceLock<'_>::print::DisplayBacktrace as std::fmt::Display>::fmt
                               at /checkout/library/std/src/sys/backtrace.rs:39:26
---
  12:           0xdbbe47 - std::panicking::rust_panic_with_hook
                               at /checkout/library/std/src/panicking.rs:833:13
  13:           0xdbaa02 - std::panicking::begin_panic_handler::{closure#0}
                               at /checkout/library/std/src/panicking.rs:699:13
  14:           0xeddb3a - std::sys::backtrace::__rust_end_short_backtrace::<{closure@std::panicking::begin_panic_handler::{closure#0}}, !>
                               at /checkout/library/std/src/sys/backtrace.rs:168:18
  15:           0xdba9a3 - std::panicking::begin_panic_handler
                               at /checkout/library/std/src/panicking.rs:697:5
  16:           0x1953bc - std::rt::panic_fmt
                               at /checkout/library/core/src/panicking.rs:75:14
  17:            0x42b7c - <Foo as std::ops::Drop>::drop
---
  26:            0x96ef5 - std::panic::catch_unwind::<&dyn std::ops::Fn() -> i32 + std::marker::Sync + std::panic::RefUnwindSafe, i32>
                               at /checkout/library/std/src/panic.rs:359:14
  27:           0x1c7408 - std::rt::lang_start_internal::{closure#0}
                               at /checkout/library/std/src/rt.rs:168:24
  28:           0xdb9bc8 - std::panicking::r#try::do_call::<{closure@std::rt::lang_start_internal::{closure#0}}, isize>
                               at /checkout/library/std/src/panicking.rs:589:40
  29:           0xdb9546 - std::panicking::r#try::<isize, {closure@std::rt::lang_start_internal::{closure#0}}>
                               at /checkout/library/std/src/panicking.rs:552:19
  30:            0x96f1c - std::panic::catch_unwind::<{closure@std::rt::lang_start_internal::{closure#0}}, isize>
                               at /checkout/library/std/src/panic.rs:359:14
  31:           0x1c738d - std::rt::lang_start_internal
                               at /checkout/library/std/src/rt.rs:164:5
  32:           0x1c784b - std::rt::lang_start::<()>
                               at /checkout/library/std/src/rt.rs:198:5
---
   = note: BACKTRACE:
   = note: inside `std::sys::pal::unix::abort_internal` at /checkout/library/std/src/sys/pal/unix/mod.rs:366:14: 366:27
   = note: inside `std::panicking::rust_panic_with_hook` at /checkout/library/std/src/panicking.rs:855:9: 855:37
   = note: inside closure at /checkout/library/std/src/panicking.rs:699:13: 704:14
   = note: inside `std::sys::backtrace::__rust_end_short_backtrace::<{closure@std::panicking::begin_panic_handler::{closure#0}}, !>` at /checkout/library/std/src/sys/backtrace.rs:168:18: 168:21
   = note: inside `std::panicking::begin_panic_handler` at /checkout/library/std/src/panicking.rs:697:5: 713:7
   = note: inside `core::panicking::panic_nounwind_nobacktrace` at /checkout/library/core/src/panicking.rs:226:5: 226:90
   = note: inside `core::panicking::panic_in_cleanup` at /checkout/library/core/src/panicking.rs:339:5: 339:71
note: inside `main`
  --> tests/fail/panic/double_panic.rs:13:1
---



FAILED TEST: tests/fail/panic/abort_unwind.rs
command: MIRI_ENV_VAR_TEST="0" MIRI_TEMP="/tmp/miri-uitest-crWDme" RUST_BACKTRACE="1" "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2/bin/miri" "--error-format=json" "--sysroot=/checkout/obj/build/x86_64-unknown-linux-gnu/miri-sysroot" "-Dwarnings" "-Dunused" "-Ainternal_features" "-Zui-testing" "--out-dir" "/checkout/obj/build/x86_64-unknown-linux-gnu/stage1-tools/miri_ui/0/tests/fail/panic" "tests/fail/panic/abort_unwind.rs" "--edition" "2021"

error: actual output differed from expected
Execute `./miri test --bless` to update `tests/fail/panic/abort_unwind.stderr` to the actual output
--- tests/fail/panic/abort_unwind.stderr
+++ <stderr output>
 
 thread 'main' panicked at tests/fail/panic/abort_unwind.rs:LL:CC:
... 18 lines skipped ...
    = note: inside `std::sys::backtrace::__rust_end_short_backtrace::<{closure@std::panicking::begin_panic_handler::{closure#0}}, !>` at RUSTLIB/std/src/sys/backtrace.rs:LL:CC
    = note: inside `std::panicking::begin_panic_handler` at RUSTLIB/std/src/panicking.rs:LL:CC
+   = note: inside `core::panicking::panic_nounwind` at RUSTLIB/core/src/panicking.rs:LL:CC
    = note: inside `core::panicking::panic_cannot_unwind` at RUSTLIB/core/src/panicking.rs:LL:CC
    = note: inside `std::panic::abort_unwind::<{closure@tests/fail/panic/abort_unwind.rs:LL:CC}, ()>` at RUSTLIB/core/src/panic.rs:LL:CC
... 8 lines skipped ...
 error: aborting due to 1 previous error
 

Full unnormalized output:

thread 'main' panicked at tests/fail/panic/abort_unwind.rs:10:33:
PANIC!!!
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
note: in Miri, you may have to set `MIRIFLAGS=-Zmiri-env-forward=RUST_BACKTRACE` for the environment variable to have an effect

thread 'main' panicked at /checkout/library/core/src/panicking.rs:218:5:
panic in a function that cannot unwind
stack backtrace:
   0:           0xfa59c9 - std::backtrace_rs::backtrace::miri::trace_unsynchronized::<&mut {closure@std::sys::backtrace::_print_fmt::{closure#1}}>
                               at /checkout/library/std/src/../../backtrace/src/backtrace/miri.rs:108:9
   1:           0xfa551a - std::backtrace_rs::backtrace::miri::trace::<&mut {closure@std::sys::backtrace::_print_fmt::{closure#1}}>
                               at /checkout/library/std/src/../../backtrace/src/backtrace/miri.rs:65:14
   2:           0xfa3cbc - std::backtrace_rs::backtrace::trace_unsynchronized::<{closure@std::sys::backtrace::_print_fmt::{closure#1}}>
                               at /checkout/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
   3:           0xedd9a9 - std::sys::backtrace::_print_fmt
                               at /checkout/library/std/src/sys/backtrace.rs:66:9
   4:           0xedd593 - <std::sys::backtrace::BacktraceLock<'_>::print::DisplayBacktrace as std::fmt::Display>::fmt
                               at /checkout/library/std/src/sys/backtrace.rs:39:26
---
  12:           0x1eb014 - std::panicking::rust_panic_with_hook
                               at /checkout/library/std/src/panicking.rs:833:13
  13:           0x1e9bd3 - std::panicking::begin_panic_handler::{closure#0}
                               at /checkout/library/std/src/panicking.rs:699:13
  14:           0xede86a - std::sys::backtrace::__rust_end_short_backtrace::<{closure@std::panicking::begin_panic_handler::{closure#0}}, !>
                               at /checkout/library/std/src/sys/backtrace.rs:168:18
  15:           0x1e9b71 - std::panicking::begin_panic_handler
                               at /checkout/library/std/src/panicking.rs:697:5
  16:           0x19684f - core::panicking::panic_nounwind_fmt::runtime
                               at /checkout/library/core/src/panicking.rs:117:22
  17:           0x3c1768 - core::panicking::panic_nounwind_fmt
                               at /checkout/library/core/src/intrinsics/mod.rs:3196:9
  18:           0x197efd - core::panicking::panic_nounwind
                               at /checkout/library/core/src/panicking.rs:218:5
  19:           0x198fbd - core::panicking::panic_cannot_unwind
                               at /checkout/library/core/src/panicking.rs:323:5
  20:            0xcf095 - std::panic::abort_unwind::<{closure@tests/fail/panic/abort_unwind.rs:10:30: 10:32}, ()>
                               at /checkout/library/core/src/panic.rs:164:1
  21:            0x438f7 - main
                               at tests/fail/panic/abort_unwind.rs:10:5
  22:           0x129418 - <fn() as std::ops::FnOnce<()>>::call_once - shim(fn())
                               at /checkout/library/core/src/ops/function.rs:250:5
---
  28:            0x97c43 - std::panic::catch_unwind::<&dyn std::ops::Fn() -> i32 + std::marker::Sync + std::panic::RefUnwindSafe, i32>
                               at /checkout/library/std/src/panic.rs:359:14
  29:           0x1ca150 - std::rt::lang_start_internal::{closure#0}
                               at /checkout/library/std/src/rt.rs:168:24
  30:           0x1e8db0 - std::panicking::r#try::do_call::<{closure@std::rt::lang_start_internal::{closure#0}}, isize>
                               at /checkout/library/std/src/panicking.rs:589:40
  31:           0x1e8735 - std::panicking::r#try::<isize, {closure@std::rt::lang_start_internal::{closure#0}}>
                               at /checkout/library/std/src/panicking.rs:552:19
  32:            0x97c6a - std::panic::catch_unwind::<{closure@std::rt::lang_start_internal::{closure#0}}, isize>
                               at /checkout/library/std/src/panic.rs:359:14
  33:           0x1ca0d8 - std::rt::lang_start_internal
                               at /checkout/library/std/src/rt.rs:164:5
  34:           0x1ca599 - std::rt::lang_start::<()>
                               at /checkout/library/std/src/rt.rs:198:5
---
   = note: BACKTRACE:
   = note: inside `std::sys::pal::unix::abort_internal` at /checkout/library/std/src/sys/pal/unix/mod.rs:366:14: 366:27
   = note: inside `std::panicking::rust_panic_with_hook` at /checkout/library/std/src/panicking.rs:855:9: 855:37
   = note: inside closure at /checkout/library/std/src/panicking.rs:699:13: 704:14
   = note: inside `std::sys::backtrace::__rust_end_short_backtrace::<{closure@std::panicking::begin_panic_handler::{closure#0}}, !>` at /checkout/library/std/src/sys/backtrace.rs:168:18: 168:21
   = note: inside `std::panicking::begin_panic_handler` at /checkout/library/std/src/panicking.rs:697:5: 713:7
   = note: inside `core::panicking::panic_nounwind` at /checkout/library/core/src/panicking.rs:218:5: 218:91
   = note: inside `core::panicking::panic_cannot_unwind` at /checkout/library/core/src/panicking.rs:323:5: 323:61
   = note: inside `std::panic::abort_unwind::<{closure@tests/fail/panic/abort_unwind.rs:10:30: 10:32}, ()>` at /checkout/library/core/src/panic.rs:164:1: 166:2
note: inside `main`
  --> tests/fail/panic/abort_unwind.rs:10:5
   |
LL |     std::panic::abort_unwind(|| panic!("PANIC!!!"));
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

note: some details are omitted, run with `MIRIFLAGS=-Zmiri-backtrace=full` for a verbose backtrace

error: aborting due to 1 previous error
---

thread 'main' panicked at tests/fail/panic/abort_unwind.rs:10:33:
PANIC!!!
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
note: in Miri, you may have to set `MIRIFLAGS=-Zmiri-env-forward=RUST_BACKTRACE` for the environment variable to have an effect

thread 'main' panicked at /checkout/library/core/src/panicking.rs:218:5:
panic in a function that cannot unwind
stack backtrace:
   0:           0xfa59c9 - std::backtrace_rs::backtrace::miri::trace_unsynchronized::<&mut {closure@std::sys::backtrace::_print_fmt::{closure#1}}>
                               at /checkout/library/std/src/../../backtrace/src/backtrace/miri.rs:108:9
   1:           0xfa551a - std::backtrace_rs::backtrace::miri::trace::<&mut {closure@std::sys::backtrace::_print_fmt::{closure#1}}>
                               at /checkout/library/std/src/../../backtrace/src/backtrace/miri.rs:65:14
   2:           0xfa3cbc - std::backtrace_rs::backtrace::trace_unsynchronized::<{closure@std::sys::backtrace::_print_fmt::{closure#1}}>
                               at /checkout/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
   3:           0xedd9a9 - std::sys::backtrace::_print_fmt
                               at /checkout/library/std/src/sys/backtrace.rs:66:9
   4:           0xedd593 - <std::sys::backtrace::BacktraceLock<'_>::print::DisplayBacktrace as std::fmt::Display>::fmt
                               at /checkout/library/std/src/sys/backtrace.rs:39:26
---
  12:           0x1eb014 - std::panicking::rust_panic_with_hook
                               at /checkout/library/std/src/panicking.rs:833:13
  13:           0x1e9bd3 - std::panicking::begin_panic_handler::{closure#0}
                               at /checkout/library/std/src/panicking.rs:699:13
  14:           0xede86a - std::sys::backtrace::__rust_end_short_backtrace::<{closure@std::panicking::begin_panic_handler::{closure#0}}, !>
                               at /checkout/library/std/src/sys/backtrace.rs:168:18
  15:           0x1e9b71 - std::panicking::begin_panic_handler
                               at /checkout/library/std/src/panicking.rs:697:5
  16:           0x19684f - core::panicking::panic_nounwind_fmt::runtime
                               at /checkout/library/core/src/panicking.rs:117:22
  17:           0x3c1768 - core::panicking::panic_nounwind_fmt
                               at /checkout/library/core/src/intrinsics/mod.rs:3196:9
  18:           0x197efd - core::panicking::panic_nounwind
                               at /checkout/library/core/src/panicking.rs:218:5
  19:           0x198fbd - core::panicking::panic_cannot_unwind
                               at /checkout/library/core/src/panicking.rs:323:5
  20:            0xcf095 - std::panic::abort_unwind::<{closure@tests/fail/panic/abort_unwind.rs:10:30: 10:32}, ()>
                               at /checkout/library/core/src/panic.rs:164:1
  21:            0x438f7 - main
                               at tests/fail/panic/abort_unwind.rs:10:5
  22:           0x129418 - <fn() as std::ops::FnOnce<()>>::call_once - shim(fn())
                               at /checkout/library/core/src/ops/function.rs:250:5
---
  28:            0x97c43 - std::panic::catch_unwind::<&dyn std::ops::Fn() -> i32 + std::marker::Sync + std::panic::RefUnwindSafe, i32>
                               at /checkout/library/std/src/panic.rs:359:14
  29:           0x1ca150 - std::rt::lang_start_internal::{closure#0}
                               at /checkout/library/std/src/rt.rs:168:24
  30:           0x1e8db0 - std::panicking::r#try::do_call::<{closure@std::rt::lang_start_internal::{closure#0}}, isize>
                               at /checkout/library/std/src/panicking.rs:589:40
  31:           0x1e8735 - std::panicking::r#try::<isize, {closure@std::rt::lang_start_internal::{closure#0}}>
                               at /checkout/library/std/src/panicking.rs:552:19
  32:            0x97c6a - std::panic::catch_unwind::<{closure@std::rt::lang_start_internal::{closure#0}}, isize>
                               at /checkout/library/std/src/panic.rs:359:14
  33:           0x1ca0d8 - std::rt::lang_start_internal
                               at /checkout/library/std/src/rt.rs:164:5
  34:           0x1ca599 - std::rt::lang_start::<()>
                               at /checkout/library/std/src/rt.rs:198:5
---
   = note: BACKTRACE:
   = note: inside `std::sys::pal::unix::abort_internal` at /checkout/library/std/src/sys/pal/unix/mod.rs:366:14: 366:27
   = note: inside `std::panicking::rust_panic_with_hook` at /checkout/library/std/src/panicking.rs:855:9: 855:37
   = note: inside closure at /checkout/library/std/src/panicking.rs:699:13: 704:14
   = note: inside `std::sys::backtrace::__rust_end_short_backtrace::<{closure@std::panicking::begin_panic_handler::{closure#0}}, !>` at /checkout/library/std/src/sys/backtrace.rs:168:18: 168:21
   = note: inside `std::panicking::begin_panic_handler` at /checkout/library/std/src/panicking.rs:697:5: 713:7
   = note: inside `core::panicking::panic_nounwind` at /checkout/library/core/src/panicking.rs:218:5: 218:91
   = note: inside `core::panicking::panic_cannot_unwind` at /checkout/library/core/src/panicking.rs:323:5: 323:61
   = note: inside `std::panic::abort_unwind::<{closure@tests/fail/panic/abort_unwind.rs:10:30: 10:32}, ()>` at /checkout/library/core/src/panic.rs:164:1: 166:2
note: inside `main`
  --> tests/fail/panic/abort_unwind.rs:10:5
   |
LL |     std::panic::abort_unwind(|| panic!("PANIC!!!"));
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

note: some details are omitted, run with `MIRIFLAGS=-Zmiri-backtrace=full` for a verbose backtrace

error: aborting due to 1 previous error


full stdout:



FAILED TEST: tests/fail/function_calls/exported_symbol_bad_unwind2.rs (revision `definition`)
command: MIRI_ENV_VAR_TEST="0" MIRI_TEMP="/tmp/miri-uitest-crWDme" RUST_BACKTRACE="1" "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2/bin/miri" "--error-format=json" "--sysroot=/checkout/obj/build/x86_64-unknown-linux-gnu/miri-sysroot" "-Dwarnings" "-Dunused" "-Ainternal_features" "-Zui-testing" "--out-dir" "/checkout/obj/build/x86_64-unknown-linux-gnu/stage1-tools/miri_ui/0/tests/fail/function_calls" "tests/fail/function_calls/exported_symbol_bad_unwind2.rs" "--edition" "2021" "--cfg=definition" "-Cextra-filename=definition"

error: actual output differed from expected
Execute `./miri test --bless` to update `tests/fail/function_calls/exported_symbol_bad_unwind2.definition.stderr` to the actual output
--- tests/fail/function_calls/exported_symbol_bad_unwind2.definition.stderr
+++ <stderr output>
 
 thread 'main' panicked at tests/fail/function_calls/exported_symbol_bad_unwind2.rs:LL:CC:
... 18 lines skipped ...
    = note: inside `std::sys::backtrace::__rust_end_short_backtrace::<{closure@std::panicking::begin_panic_handler::{closure#0}}, !>` at RUSTLIB/std/src/sys/backtrace.rs:LL:CC
    = note: inside `std::panicking::begin_panic_handler` at RUSTLIB/std/src/panicking.rs:LL:CC
+   = note: inside `core::panicking::panic_nounwind` at RUSTLIB/core/src/panicking.rs:LL:CC
    = note: inside `core::panicking::panic_cannot_unwind` at RUSTLIB/core/src/panicking.rs:LL:CC
 note: inside `nounwind`
... 14 lines skipped ...
---

thread 'main' panicked at tests/fail/function_calls/exported_symbol_bad_unwind2.rs:12:5:
explicit panic
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
note: in Miri, you may have to set `MIRIFLAGS=-Zmiri-env-forward=RUST_BACKTRACE` for the environment variable to have an effect

thread 'main' panicked at /checkout/library/core/src/panicking.rs:218:5:
panic in a function that cannot unwind
stack backtrace:
   0:           0xfa962b - std::backtrace_rs::backtrace::miri::trace_unsynchronized::<&mut {closure@std::sys::backtrace::_print_fmt::{closure#1}}>
                               at /checkout/library/std/src/../../backtrace/src/backtrace/miri.rs:108:9
   1:           0xfa9175 - std::backtrace_rs::backtrace::miri::trace::<&mut {closure@std::sys::backtrace::_print_fmt::{closure#1}}>
                               at /checkout/library/std/src/../../backtrace/src/backtrace/miri.rs:65:14
   2:           0xfa7910 - std::backtrace_rs::backtrace::trace_unsynchronized::<{closure@std::sys::backtrace::_print_fmt::{closure#1}}>
                               at /checkout/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
   3:           0xee1027 - std::sys::backtrace::_print_fmt
                               at /checkout/library/std/src/sys/backtrace.rs:66:9
   4:           0xee0c07 - <std::sys::backtrace::BacktraceLock<'_>::print::DisplayBacktrace as std::fmt::Display>::fmt
                               at /checkout/library/std/src/sys/backtrace.rs:39:26
---
  12:           0x1d5a72 - std::panicking::rust_panic_with_hook
                               at /checkout/library/std/src/panicking.rs:833:13
  13:           0x1d4622 - std::panicking::begin_panic_handler::{closure#0}
                               at /checkout/library/std/src/panicking.rs:699:13
  14:           0xee1eb4 - std::sys::backtrace::__rust_end_short_backtrace::<{closure@std::panicking::begin_panic_handler::{closure#0}}, !>
                               at /checkout/library/std/src/sys/backtrace.rs:168:18
  15:           0x1d45c6 - std::panicking::begin_panic_handler
                               at /checkout/library/std/src/panicking.rs:697:5
  16:           0x199e91 - core::panicking::panic_nounwind_fmt::runtime
                               at /checkout/library/core/src/panicking.rs:117:22
  17:           0x3ac1c1 - core::panicking::panic_nounwind_fmt
---
  28:            0x9b290 - std::panic::catch_unwind::<&dyn std::ops::Fn() -> i32 + std::marker::Sync + std::panic::RefUnwindSafe, i32>
                               at /checkout/library/std/src/panic.rs:359:14
  29:           0x1b3125 - std::rt::lang_start_internal::{closure#0}
                               at /checkout/library/std/src/rt.rs:168:24
  30:           0x1d380e - std::panicking::r#try::do_call::<{closure@std::rt::lang_start_internal::{closure#0}}, isize>
                               at /checkout/library/std/src/panicking.rs:589:40
  31:           0x1d318e - std::panicking::r#try::<isize, {closure@std::rt::lang_start_internal::{closure#0}}>
                               at /checkout/library/std/src/panicking.rs:552:19
  32:            0x9b2b1 - std::panic::catch_unwind::<{closure@std::rt::lang_start_internal::{closure#0}}, isize>
                               at /checkout/library/std/src/panic.rs:359:14
  33:           0x1b309f - std::rt::lang_start_internal
                               at /checkout/library/std/src/rt.rs:164:5
  34:           0x1b3558 - std::rt::lang_start::<()>
                               at /checkout/library/std/src/rt.rs:198:5
---
   = note: BACKTRACE:
   = note: inside `std::sys::pal::unix::abort_internal` at /checkout/library/std/src/sys/pal/unix/mod.rs:366:14: 366:27
   = note: inside `std::panicking::rust_panic_with_hook` at /checkout/library/std/src/panicking.rs:855:9: 855:37
   = note: inside closure at /checkout/library/std/src/panicking.rs:699:13: 704:14
   = note: inside `std::sys::backtrace::__rust_end_short_backtrace::<{closure@std::panicking::begin_panic_handler::{closure#0}}, !>` at /checkout/library/std/src/sys/backtrace.rs:168:18: 168:21
   = note: inside `std::panicking::begin_panic_handler` at /checkout/library/std/src/panicking.rs:697:5: 713:7
   = note: inside `core::panicking::panic_nounwind` at /checkout/library/core/src/panicking.rs:218:5: 218:91
   = note: inside `core::panicking::panic_cannot_unwind` at /checkout/library/core/src/panicking.rs:323:5: 323:61
note: inside `nounwind`
  --> tests/fail/function_calls/exported_symbol_bad_unwind2.rs:11:1
   |
LL | / extern "C-unwind" fn nounwind() {
LL | |     panic!();
LL | | }
   | |_^
note: inside `main`
  --> tests/fail/function_calls/exported_symbol_bad_unwind2.rs:20:14
---

thread 'main' panicked at tests/fail/function_calls/exported_symbol_bad_unwind2.rs:12:5:
explicit panic
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
note: in Miri, you may have to set `MIRIFLAGS=-Zmiri-env-forward=RUST_BACKTRACE` for the environment variable to have an effect

thread 'main' panicked at /checkout/library/core/src/panicking.rs:218:5:
panic in a function that cannot unwind
stack backtrace:
   0:           0xfa962b - std::backtrace_rs::backtrace::miri::trace_unsynchronized::<&mut {closure@std::sys::backtrace::_print_fmt::{closure#1}}>
                               at /checkout/library/std/src/../../backtrace/src/backtrace/miri.rs:108:9
   1:           0xfa9175 - std::backtrace_rs::backtrace::miri::trace::<&mut {closure@std::sys::backtrace::_print_fmt::{closure#1}}>
                               at /checkout/library/std/src/../../backtrace/src/backtrace/miri.rs:65:14
   2:           0xfa7910 - std::backtrace_rs::backtrace::trace_unsynchronized::<{closure@std::sys::backtrace::_print_fmt::{closure#1}}>
                               at /checkout/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
   3:           0xee1027 - std::sys::backtrace::_print_fmt
                               at /checkout/library/std/src/sys/backtrace.rs:66:9
   4:           0xee0c07 - <std::sys::backtrace::BacktraceLock<'_>::print::DisplayBacktrace as std::fmt::Display>::fmt
                               at /checkout/library/std/src/sys/backtrace.rs:39:26
---
  12:           0x1d5a72 - std::panicking::rust_panic_with_hook
                               at /checkout/library/std/src/panicking.rs:833:13
  13:           0x1d4622 - std::panicking::begin_panic_handler::{closure#0}
                               at /checkout/library/std/src/panicking.rs:699:13
  14:           0xee1eb4 - std::sys::backtrace::__rust_end_short_backtrace::<{closure@std::panicking::begin_panic_handler::{closure#0}}, !>
                               at /checkout/library/std/src/sys/backtrace.rs:168:18
  15:           0x1d45c6 - std::panicking::begin_panic_handler
                               at /checkout/library/std/src/panicking.rs:697:5
  16:           0x199e91 - core::panicking::panic_nounwind_fmt::runtime
                               at /checkout/library/core/src/panicking.rs:117:22
  17:           0x3ac1c1 - core::panicking::panic_nounwind_fmt
---
  28:            0x9b290 - std::panic::catch_unwind::<&dyn std::ops::Fn() -> i32 + std::marker::Sync + std::panic::RefUnwindSafe, i32>
                               at /checkout/library/std/src/panic.rs:359:14
  29:           0x1b3125 - std::rt::lang_start_internal::{closure#0}
                               at /checkout/library/std/src/rt.rs:168:24
  30:           0x1d380e - std::panicking::r#try::do_call::<{closure@std::rt::lang_start_internal::{closure#0}}, isize>
                               at /checkout/library/std/src/panicking.rs:589:40
  31:           0x1d318e - std::panicking::r#try::<isize, {closure@std::rt::lang_start_internal::{closure#0}}>
                               at /checkout/library/std/src/panicking.rs:552:19
  32:            0x9b2b1 - std::panic::catch_unwind::<{closure@std::rt::lang_start_internal::{closure#0}}, isize>
                               at /checkout/library/std/src/panic.rs:359:14
  33:           0x1b309f - std::rt::lang_start_internal
                               at /checkout/library/std/src/rt.rs:164:5
  34:           0x1b3558 - std::rt::lang_start::<()>
                               at /checkout/library/std/src/rt.rs:198:5
---
   = note: BACKTRACE:
   = note: inside `std::sys::pal::unix::abort_internal` at /checkout/library/std/src/sys/pal/unix/mod.rs:366:14: 366:27
   = note: inside `std::panicking::rust_panic_with_hook` at /checkout/library/std/src/panicking.rs:855:9: 855:37
   = note: inside closure at /checkout/library/std/src/panicking.rs:699:13: 704:14
   = note: inside `std::sys::backtrace::__rust_end_short_backtrace::<{closure@std::panicking::begin_panic_handler::{closure#0}}, !>` at /checkout/library/std/src/sys/backtrace.rs:168:18: 168:21
   = note: inside `std::panicking::begin_panic_handler` at /checkout/library/std/src/panicking.rs:697:5: 713:7
   = note: inside `core::panicking::panic_nounwind` at /checkout/library/core/src/panicking.rs:218:5: 218:91
   = note: inside `core::panicking::panic_cannot_unwind` at /checkout/library/core/src/panicking.rs:323:5: 323:61
note: inside `nounwind`
  --> tests/fail/function_calls/exported_symbol_bad_unwind2.rs:11:1
   |
LL | / extern "C-unwind" fn nounwind() {
LL | |     panic!();
LL | | }
   | |_^
note: inside `main`
  --> tests/fail/function_calls/exported_symbol_bad_unwind2.rs:20:14
---



FAILED TEST: tests/fail/function_calls/exported_symbol_bad_unwind2.rs (revision `both`)
command: MIRI_ENV_VAR_TEST="0" MIRI_TEMP="/tmp/miri-uitest-crWDme" RUST_BACKTRACE="1" "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2/bin/miri" "--error-format=json" "--sysroot=/checkout/obj/build/x86_64-unknown-linux-gnu/miri-sysroot" "-Dwarnings" "-Dunused" "-Ainternal_features" "-Zui-testing" "--out-dir" "/checkout/obj/build/x86_64-unknown-linux-gnu/stage1-tools/miri_ui/0/tests/fail/function_calls" "tests/fail/function_calls/exported_symbol_bad_unwind2.rs" "--edition" "2021" "--cfg=both" "-Cextra-filename=both"

error: actual output differed from expected
Execute `./miri test --bless` to update `tests/fail/function_calls/exported_symbol_bad_unwind2.both.stderr` to the actual output
--- tests/fail/function_calls/exported_symbol_bad_unwind2.both.stderr
+++ <stderr output>
 
 thread 'main' panicked at tests/fail/function_calls/exported_symbol_bad_unwind2.rs:LL:CC:
... 18 lines skipped ...
    = note: inside `std::sys::backtrace::__rust_end_short_backtrace::<{closure@std::panicking::begin_panic_handler::{closure#0}}, !>` at RUSTLIB/std/src/sys/backtrace.rs:LL:CC
    = note: inside `std::panicking::begin_panic_handler` at RUSTLIB/std/src/panicking.rs:LL:CC
+   = note: inside `core::panicking::panic_nounwind` at RUSTLIB/core/src/panicking.rs:LL:CC
    = note: inside `core::panicking::panic_cannot_unwind` at RUSTLIB/core/src/panicking.rs:LL:CC
 note: inside `nounwind`
... 14 lines skipped ...
---

thread 'main' panicked at tests/fail/function_calls/exported_symbol_bad_unwind2.rs:12:5:
explicit panic
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
note: in Miri, you may have to set `MIRIFLAGS=-Zmiri-env-forward=RUST_BACKTRACE` for the environment variable to have an effect

thread 'main' panicked at /checkout/library/core/src/panicking.rs:218:5:
panic in a function that cannot unwind
stack backtrace:
   0:           0xfa962b - std::backtrace_rs::backtrace::miri::trace_unsynchronized::<&mut {closure@std::sys::backtrace::_print_fmt::{closure#1}}>
                               at /checkout/library/std/src/../../backtrace/src/backtrace/miri.rs:108:9
   1:           0xfa9175 - std::backtrace_rs::backtrace::miri::trace::<&mut {closure@std::sys::backtrace::_print_fmt::{closure#1}}>
                               at /checkout/library/std/src/../../backtrace/src/backtrace/miri.rs:65:14
   2:           0xfa7910 - std::backtrace_rs::backtrace::trace_unsynchronized::<{closure@std::sys::backtrace::_print_fmt::{closure#1}}>
                               at /checkout/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
   3:           0xee1027 - std::sys::backtrace::_print_fmt
                               at /checkout/library/std/src/sys/backtrace.rs:66:9
   4:           0xee0c07 - <std::sys::backtrace::BacktraceLock<'_>::print::DisplayBacktrace as std::fmt::Display>::fmt
                               at /checkout/library/std/src/sys/backtrace.rs:39:26
---
  12:           0x1d5a72 - std::panicking::rust_panic_with_hook
                               at /checkout/library/std/src/panicking.rs:833:13
  13:           0x1d4622 - std::panicking::begin_panic_handler::{closure#0}
                               at /checkout/library/std/src/panicking.rs:699:13
  14:           0xee1eb4 - std::sys::backtrace::__rust_end_short_backtrace::<{closure@std::panicking::begin_panic_handler::{closure#0}}, !>
                               at /checkout/library/std/src/sys/backtrace.rs:168:18
  15:           0x1d45c6 - std::panicking::begin_panic_handler
                               at /checkout/library/std/src/panicking.rs:697:5
  16:           0x199e91 - core::panicking::panic_nounwind_fmt::runtime
                               at /checkout/library/core/src/panicking.rs:117:22
  17:           0x3ac1c1 - core::panicking::panic_nounwind_fmt
---
  28:            0x9b290 - std::panic::catch_unwind::<&dyn std::ops::Fn() -> i32 + std::marker::Sync + std::panic::RefUnwindSafe, i32>
                               at /checkout/library/std/src/panic.rs:359:14
  29:           0x1b3125 - std::rt::lang_start_internal::{closure#0}
                               at /checkout/library/std/src/rt.rs:168:24
  30:           0x1d380e - std::panicking::r#try::do_call::<{closure@std::rt::lang_start_internal::{closure#0}}, isize>
                               at /checkout/library/std/src/panicking.rs:589:40
  31:           0x1d318e - std::panicking::r#try::<isize, {closure@std::rt::lang_start_internal::{closure#0}}>
                               at /checkout/library/std/src/panicking.rs:552:19
  32:            0x9b2b1 - std::panic::catch_unwind::<{closure@std::rt::lang_start_internal::{closure#0}}, isize>
                               at /checkout/library/std/src/panic.rs:359:14
  33:           0x1b309f - std::rt::lang_start_internal
                               at /checkout/library/std/src/rt.rs:164:5
  34:           0x1b3558 - std::rt::lang_start::<()>
                               at /checkout/library/std/src/rt.rs:198:5
---
   = note: BACKTRACE:
   = note: inside `std::sys::pal::unix::abort_internal` at /checkout/library/std/src/sys/pal/unix/mod.rs:366:14: 366:27
   = note: inside `std::panicking::rust_panic_with_hook` at /checkout/library/std/src/panicking.rs:855:9: 855:37
   = note: inside closure at /checkout/library/std/src/panicking.rs:699:13: 704:14
   = note: inside `std::sys::backtrace::__rust_end_short_backtrace::<{closure@std::panicking::begin_panic_handler::{closure#0}}, !>` at /checkout/library/std/src/sys/backtrace.rs:168:18: 168:21
   = note: inside `std::panicking::begin_panic_handler` at /checkout/library/std/src/panicking.rs:697:5: 713:7
   = note: inside `core::panicking::panic_nounwind` at /checkout/library/core/src/panicking.rs:218:5: 218:91
   = note: inside `core::panicking::panic_cannot_unwind` at /checkout/library/core/src/panicking.rs:323:5: 323:61
note: inside `nounwind`
  --> tests/fail/function_calls/exported_symbol_bad_unwind2.rs:11:1
   |
LL | / extern "C-unwind" fn nounwind() {
LL | |     panic!();
LL | | }
   | |_^
note: inside `main`
  --> tests/fail/function_calls/exported_symbol_bad_unwind2.rs:20:14
---

thread 'main' panicked at tests/fail/function_calls/exported_symbol_bad_unwind2.rs:12:5:
explicit panic
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
note: in Miri, you may have to set `MIRIFLAGS=-Zmiri-env-forward=RUST_BACKTRACE` for the environment variable to have an effect

thread 'main' panicked at /checkout/library/core/src/panicking.rs:218:5:
panic in a function that cannot unwind
stack backtrace:
   0:           0xfa962b - std::backtrace_rs::backtrace::miri::trace_unsynchronized::<&mut {closure@std::sys::backtrace::_print_fmt::{closure#1}}>
                               at /checkout/library/std/src/../../backtrace/src/backtrace/miri.rs:108:9
   1:           0xfa9175 - std::backtrace_rs::backtrace::miri::trace::<&mut {closure@std::sys::backtrace::_print_fmt::{closure#1}}>
                               at /checkout/library/std/src/../../backtrace/src/backtrace/miri.rs:65:14
   2:           0xfa7910 - std::backtrace_rs::backtrace::trace_unsynchronized::<{closure@std::sys::backtrace::_print_fmt::{closure#1}}>
                               at /checkout/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
   3:           0xee1027 - std::sys::backtrace::_print_fmt
                               at /checkout/library/std/src/sys/backtrace.rs:66:9
   4:           0xee0c07 - <std::sys::backtrace::BacktraceLock<'_>::print::DisplayBacktrace as std::fmt::Display>::fmt
                               at /checkout/library/std/src/sys/backtrace.rs:39:26
---
  12:           0x1d5a72 - std::panicking::rust_panic_with_hook
                               at /checkout/library/std/src/panicking.rs:833:13
  13:           0x1d4622 - std::panicking::begin_panic_handler::{closure#0}
                               at /checkout/library/std/src/panicking.rs:699:13
  14:           0xee1eb4 - std::sys::backtrace::__rust_end_short_backtrace::<{closure@std::panicking::begin_panic_handler::{closure#0}}, !>
                               at /checkout/library/std/src/sys/backtrace.rs:168:18
  15:           0x1d45c6 - std::panicking::begin_panic_handler
                               at /checkout/library/std/src/panicking.rs:697:5
  16:           0x199e91 - core::panicking::panic_nounwind_fmt::runtime
                               at /checkout/library/core/src/panicking.rs:117:22
  17:           0x3ac1c1 - core::panicking::panic_nounwind_fmt
---
  28:            0x9b290 - std::panic::catch_unwind::<&dyn std::ops::Fn() -> i32 + std::marker::Sync + std::panic::RefUnwindSafe, i32>
                               at /checkout/library/std/src/panic.rs:359:14
  29:           0x1b3125 - std::rt::lang_start_internal::{closure#0}
                               at /checkout/library/std/src/rt.rs:168:24
  30:           0x1d380e - std::panicking::r#try::do_call::<{closure@std::rt::lang_start_internal::{closure#0}}, isize>
                               at /checkout/library/std/src/panicking.rs:589:40
  31:           0x1d318e - std::panicking::r#try::<isize, {closure@std::rt::lang_start_internal::{closure#0}}>
                               at /checkout/library/std/src/panicking.rs:552:19
  32:            0x9b2b1 - std::panic::catch_unwind::<{closure@std::rt::lang_start_internal::{closure#0}}, isize>
                               at /checkout/library/std/src/panic.rs:359:14
  33:           0x1b309f - std::rt::lang_start_internal
                               at /checkout/library/std/src/rt.rs:164:5
  34:           0x1b3558 - std::rt::lang_start::<()>
                               at /checkout/library/std/src/rt.rs:198:5
---
   = note: BACKTRACE:
   = note: inside `std::sys::pal::unix::abort_internal` at /checkout/library/std/src/sys/pal/unix/mod.rs:366:14: 366:27
   = note: inside `std::panicking::rust_panic_with_hook` at /checkout/library/std/src/panicking.rs:855:9: 855:37
   = note: inside closure at /checkout/library/std/src/panicking.rs:699:13: 704:14
   = note: inside `std::sys::backtrace::__rust_end_short_backtrace::<{closure@std::panicking::begin_panic_handler::{closure#0}}, !>` at /checkout/library/std/src/sys/backtrace.rs:168:18: 168:21
   = note: inside `std::panicking::begin_panic_handler` at /checkout/library/std/src/panicking.rs:697:5: 713:7
   = note: inside `core::panicking::panic_nounwind` at /checkout/library/core/src/panicking.rs:218:5: 218:91
   = note: inside `core::panicking::panic_cannot_unwind` at /checkout/library/core/src/panicking.rs:323:5: 323:61
note: inside `nounwind`
  --> tests/fail/function_calls/exported_symbol_bad_unwind2.rs:11:1
   |
LL | / extern "C-unwind" fn nounwind() {
LL | |     panic!();
LL | | }
   | |_^
note: inside `main`
  --> tests/fail/function_calls/exported_symbol_bad_unwind2.rs:20:14
---

Location:
   /cargo/registry/src/index.crates.io-1949cf8c6b5b557f/ui_test-0.29.2/src/lib.rs:369

Backtrace omitted. Run with RUST_BACKTRACE=1 environment variable to display it.
Run with RUST_BACKTRACE=full to include source snippets.
error: test failed, to rerun pass `--test ui`

Caused by:
  process didn't exit successfully: `/checkout/obj/build/x86_64-unknown-linux-gnu/stage1-tools/x86_64-unknown-linux-gnu/release/deps/ui-2c4f1065bc64e3d9` (exit status: 1)
Command has failed. Rerun with -v to see more details.
Build completed unsuccessfully in 0:04:34
  local time: Fri Apr 25 23:26:51 UTC 2025
  network time: Fri, 25 Apr 2025 23:26:51 GMT
##[error]Process completed with exit code 1.
Post job cleanup.

rustbot added S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. T-libs Relevant to the library team, which will review and decide on the PR/issue. labels Aug 27, 2024