crashes: more tests by matthiaskrgr · Pull Request #147857 · rust-lang/rust

matthiaskrgr · 2025-10-18T19:35:49Z

not all of them but at least some of them..

try-job: aarch64-apple
try-job: x86_64-msvc-1
try-job: x86_64-gnu
try-job: dist-i586-gnu-i586-i686-musl
try-job: test-various

matthiaskrgr · 2025-10-18T21:56:57Z

@bors try

crashes: more tests try-job: aarch64-apple try-job: x86_64-msvc-1 try-job: x86_64-gnu try-job: dist-i586-gnu-i586-i686-musl try-job: test-various

rust-bors · 2025-10-18T23:56:37Z

💔 Test for 8b4da8e failed: CI. Failed jobs:

try - x86_64-msvc-1 (web logs, extended logs)

matthiaskrgr · 2025-10-19T11:23:09Z

@bors try

crashes: more tests try-job: aarch64-apple try-job: x86_64-msvc-1 try-job: x86_64-gnu try-job: dist-i586-gnu-i586-i686-musl try-job: test-various

rust-bors · 2025-10-19T12:35:40Z

💔 Test for 322c270 failed: CI. Failed jobs:

try - dist-i586-gnu-i586-i686-musl (web logs, extended logs)

matthiaskrgr · 2025-10-19T18:40:57Z

@bors try

crashes: more tests try-job: aarch64-apple try-job: x86_64-msvc-1 try-job: x86_64-gnu try-job: dist-i586-gnu-i586-i686-musl try-job: test-various

rust-bors · 2025-10-19T21:17:38Z

☀️ Try build successful (CI)
Build commit: bda2c67 (bda2c674305762f474b2d1857eb10a5afd1ed925, parent: c6efb9019b3169fc672248339dbbf13e6a134de3)

matthiaskrgr · 2025-10-23T14:51:42Z

@bors try

crashes: more tests try-job: aarch64-apple try-job: x86_64-msvc-1 try-job: x86_64-gnu try-job: dist-i586-gnu-i586-i686-musl try-job: test-various

rust-bors · 2025-10-23T17:53:01Z

☀️ Try build successful (CI)
Build commit: 8887f00 (8887f0073f2ee36b581a4166021d0f193677eb36, parent: 11d2046fe9962720558cb15f72541f7fd170dec9)

rustbot · 2025-10-24T06:05:37Z

This PR changes a file inside tests/crashes. If a crash was fixed, please move into the corresponding ui subdir and add 'Fixes #' to the PR description to autoclose the issue upon merge.

rustbot · 2025-10-24T06:05:40Z

r? @Mark-Simulacrum

rustbot has assigned @Mark-Simulacrum.
They will have a look at your PR within the next two weeks and either review your PR or reassign to another reviewer.

Use r? to explicitly pick a reviewer

jieyouxu

Thanks, there's 2 crashes tests in here that I think we should drop, but the other ones look good. lmw what you think.

View changes since this review

jieyouxu · 2025-11-01T16:29:55Z

+//@ known-bug: rust-lang/rust#141916
+//@ edition: 2024
+#![allow(incomplete_features)]
+#![feature(ergonomic_clones)]


Question: does it make sense to add a crashes test for an incomplete feature? I don't think this would be particularly useful, since the people working said feature is already aware of the ICE.

jieyouxu · 2025-11-01T16:32:34Z

Suggestion: fmease has an MCVE #143498 (comment), so I rather not add this version with a ton of feature gates...

eh, not in the mood for dealing with aux/flags stuff right now .. :)

jieyouxu · 2025-11-01T16:36:04Z

@rustbot author

rustbot · 2025-11-09T20:48:04Z

This PR was rebased onto a different master commit. Here's a range-diff highlighting what actually changed.

Rebasing is a normal part of keeping PRs up to date, so no action is needed—this note is just to help reviewers.

matthiaskrgr · 2025-11-09T20:50:29Z

@bors try

crashes: more tests try-job: aarch64-apple try-job: x86_64-msvc-1 try-job: x86_64-gnu try-job: dist-i586-gnu-i586-i686-musl try-job: test-various

rust-log-analyzer · 2025-11-09T21:19:23Z

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

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

test [crashes] tests/crashes/142529.rs ... ok
test [crashes] tests/crashes/142382.rs ... ok
test [crashes] tests/crashes/142559.rs ... ok
test [crashes] tests/crashes/142560.rs ... ok
2025-11-09T21:19:06.322548Z ERROR compiletest::runtest: fatal error, panic: "crashtest no longer crashes/triggers ICE, hooray! Please give it a meaningful name, add a doc-comment to the start of the test explaining why it exists and move it to tests/ui or wherever you see fit. Adding 'Fixes #<issueNr>' to your PR description ensures that the corresponding ticket is auto-closed upon merge. If you want to see verbose output, set `COMPILETEST_VERBOSE_CRASHES=1`."
test [crashes] tests/crashes/142866.rs ... ok
test [crashes] tests/crashes/142773.rs ... FAILED
test [crashes] tests/crashes/142717.rs ... ok
test [crashes] tests/crashes/142913.rs ... ok
test [crashes] tests/crashes/143174.rs ... ok
test [crashes] tests/crashes/143117.rs ... ok
test [crashes] tests/crashes/143094.rs ... ok
test [crashes] tests/crashes/143358.rs ... ok
test [crashes] tests/crashes/143205.rs ... ok
2025-11-09T21:19:06.712376Z ERROR compiletest::runtest: fatal error, panic: "crashtest no longer crashes/triggers ICE, hooray! Please give it a meaningful name, add a doc-comment to the start of the test explaining why it exists and move it to tests/ui or wherever you see fit. Adding 'Fixes #<issueNr>' to your PR description ensures that the corresponding ticket is auto-closed upon merge. If you want to see verbose output, set `COMPILETEST_VERBOSE_CRASHES=1`."
test [crashes] tests/crashes/143506.rs ... FAILED
test [crashes] tests/crashes/143498.rs ... ok
test [crashes] tests/crashes/143872.rs ... ignored, ignored if rustc wasn't built with debug assertions
test [crashes] tests/crashes/143787.rs ... ok
test [crashes] tests/crashes/143806.rs ... ok
2025-11-09T21:19:06.860689Z ERROR compiletest::runtest: fatal error, panic: "crashtest no longer crashes/triggers ICE, hooray! Please give it a meaningful name, add a doc-comment to the start of the test explaining why it exists and move it to tests/ui or wherever you see fit. Adding 'Fixes #<issueNr>' to your PR description ensures that the corresponding ticket is auto-closed upon merge. If you want to see verbose output, set `COMPILETEST_VERBOSE_CRASHES=1`."
test [crashes] tests/crashes/143896.rs ... FAILED
test [crashes] tests/crashes/144033.rs ... ok
test [crashes] tests/crashes/144501.rs ... ignored, ignored if rustc wasn't built with debug assertions
test [crashes] tests/crashes/144241.rs ... ok
test [crashes] tests/crashes/144564.rs ... ignored, ignored if rustc wasn't built with debug assertions
---
test [crashes] tests/crashes/146706.rs ... ignored, ignored if rustc wasn't built with debug assertions
test [crashes] tests/crashes/146384.rs ... ok
test [crashes] tests/crashes/146514.rs ... ok
test [crashes] tests/crashes/146755.rs ... ok
2025-11-09T21:19:08.157327Z ERROR compiletest::runtest: fatal error, panic: "crashtest no longer crashes/triggers ICE, hooray! Please give it a meaningful name, add a doc-comment to the start of the test explaining why it exists and move it to tests/ui or wherever you see fit. Adding 'Fixes #<issueNr>' to your PR description ensures that the corresponding ticket is auto-closed upon merge. If you want to see verbose output, set `COMPILETEST_VERBOSE_CRASHES=1`."
test [crashes] tests/crashes/146834.rs ... FAILED
test [crashes] tests/crashes/146754.rs ... ok
test [crashes] tests/crashes/146903.rs ... ok
test [crashes] tests/crashes/146908.rs ... ok
test [crashes] tests/crashes/146906.rs ... ok
---

---- [crashes] tests/crashes/142773.rs stdout ----
------rustc stdout------------------------------

------rustc stderr------------------------------
warning: the feature `min_generic_const_args` is incomplete and may not be safe to use and/or cause compiler crashes
##[warning] --> /checkout/tests/crashes/142773.rs:3:12
  |
3 | #![feature(min_generic_const_args)]
  |            ^^^^^^^^^^^^^^^^^^^^^^
  |
  = note: see issue #132980 <https://github.com/rust-lang/rust/issues/132980> for more information
---

error: use of trait associated const without `#[type_const]`
##[error] --> /checkout/tests/crashes/142773.rs:5:36
  |
5 | pub struct EntriesBuffer(Box<[[u8; HashesEntry::LEN]; 5]>);
  |                                    ^^^^^^^^^^^^^^^^
  |
  = note: the declaration in the trait must be marked with `#[type_const]`

error: aborting due to 1 previous error; 2 warnings emitted


------------------------------------------

error: crashtest no longer crashes/triggers ICE, hooray! Please give it a meaningful name, add a doc-comment to the start of the test explaining why it exists and move it to tests/ui or wherever you see fit. Adding 'Fixes #<issueNr>' to your PR description ensures that the corresponding ticket is auto-closed upon merge. If you want to see verbose output, set `COMPILETEST_VERBOSE_CRASHES=1`.

thread '[crashes] tests/crashes/142773.rs' panicked at src/tools/compiletest/src/runtest/crashes.rs:17:18:
fatal error
stack backtrace:
   5: __rustc::rust_begin_unwind
---
---- [crashes] tests/crashes/142773.rs stdout end ----
---- [crashes] tests/crashes/143506.rs stdout ----
------rustc stdout------------------------------

------rustc stderr------------------------------
warning: the feature `generic_const_exprs` is incomplete and may not be safe to use and/or cause compiler crashes
##[warning] --> /checkout/tests/crashes/143506.rs:2:12
  |
2 | #![feature(generic_const_exprs)]
  |            ^^^^^^^^^^^^^^^^^^^
  |
  = note: see issue #76560 <https://github.com/rust-lang/rust/issues/76560> for more information
---

error: the constant `C` is not of type `u32`
##[error] --> /checkout/tests/crashes/143506.rs:9:11
  |
9 |     foo::<C>();
  |           ^ expected `u32`, found `f32`
  |
note: required by a const generic parameter in `foo`
 --> /checkout/tests/crashes/143506.rs:4:8
  |
4 | fn foo<const N: u32>(a: [(); N as usize]) {}
  |        ^^^^^^^^^^^^ required by this const generic parameter in `foo`

error[E0061]: this function takes 1 argument but 0 arguments were supplied
##[error] --> /checkout/tests/crashes/143506.rs:9:5
  |
9 |     foo::<C>();
  |     ^^^^^^^^-- argument #1 of type `[(); N as usize]` is missing
  |
note: function defined here
 --> /checkout/tests/crashes/143506.rs:4:4
  |
4 | fn foo<const N: u32>(a: [(); N as usize]) {}
  |    ^^^               -------------------
help: provide the argument
  |
9 |     foo::<C>(/* [(); N as usize] */);
  |              ++++++++++++++++++++++

warning: unused variable: `a`
##[warning] --> /checkout/tests/crashes/143506.rs:4:22
  |
4 | fn foo<const N: u32>(a: [(); N as usize]) {}
  |                      ^ help: if this is intentional, prefix it with an underscore: `_a`
  |
  = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default

error: aborting due to 2 previous errors; 3 warnings emitted

For more information about this error, try `rustc --explain E0061`.

------------------------------------------

error: crashtest no longer crashes/triggers ICE, hooray! Please give it a meaningful name, add a doc-comment to the start of the test explaining why it exists and move it to tests/ui or wherever you see fit. Adding 'Fixes #<issueNr>' to your PR description ensures that the corresponding ticket is auto-closed upon merge. If you want to see verbose output, set `COMPILETEST_VERBOSE_CRASHES=1`.

thread '[crashes] tests/crashes/143506.rs' panicked at src/tools/compiletest/src/runtest/crashes.rs:17:18:
fatal error
stack backtrace:
   5: __rustc::rust_begin_unwind
---
---- [crashes] tests/crashes/143506.rs stdout end ----
---- [crashes] tests/crashes/143896.rs stdout ----
------rustc stdout------------------------------

------rustc stderr------------------------------
error[E0261]: use of undeclared lifetime name `'a`
##[error] --> /checkout/tests/crashes/143896.rs:7:38
  |
7 | impl dyn TraitA<'_> where (): TraitA<'a,K = 0> {}
  |                                      ^^ undeclared lifetime
  |
  = note: for more information on higher-ranked polymorphism, visit https://doc.rust-lang.org/nomicon/hrtb.html
help: consider making the bound lifetime-generic with a new `'a` lifetime
  |
7 | impl dyn TraitA<'_> where (): for<'a> TraitA<'a,K = 0> {}
  |                               +++++++
help: consider making the bound lifetime-generic with a new `'a` lifetime
  |
7 | impl dyn TraitA<'_> where for<'a> (): TraitA<'a,K = 0> {}
  |                           +++++++
help: consider introducing lifetime `'a` here
  |
7 | impl<'a> dyn TraitA<'_> where (): TraitA<'a,K = 0> {}
  |     ++++

error[E0207]: the type parameter `T` is not constrained by the impl trait, self type, or predicates
##[error] --> /checkout/tests/crashes/143896.rs:6:6
  |
6 | impl<T> TraitA<'_> for () {}
  |      ^ unconstrained type parameter

error: use of trait associated const without `#[type_const]`
##[error] --> /checkout/tests/crashes/143896.rs:7:41
  |
7 | impl dyn TraitA<'_> where (): TraitA<'a,K = 0> {}
  |                                         ^^^^^
  |
  = note: the declaration in the trait must be marked with `#[type_const]`

error: aborting due to 3 previous errors

Some errors have detailed explanations: E0207, E0261.
For more information about an error, try `rustc --explain E0207`.

------------------------------------------

error: crashtest no longer crashes/triggers ICE, hooray! Please give it a meaningful name, add a doc-comment to the start of the test explaining why it exists and move it to tests/ui or wherever you see fit. Adding 'Fixes #<issueNr>' to your PR description ensures that the corresponding ticket is auto-closed upon merge. If you want to see verbose output, set `COMPILETEST_VERBOSE_CRASHES=1`.

thread '[crashes] tests/crashes/143896.rs' panicked at src/tools/compiletest/src/runtest/crashes.rs:17:18:
fatal error
stack backtrace:
   5: __rustc::rust_begin_unwind
---
---- [crashes] tests/crashes/143896.rs stdout end ----
---- [crashes] tests/crashes/146834.rs stdout ----
------rustc stdout------------------------------

------rustc stderr------------------------------
error[E0658]: use of unstable library feature `contracts`
##[error] --> /checkout/tests/crashes/146834.rs:3:4
  |
3 | #![core::contracts::ensures]
  |    ^^^^^^^^^^^^^^^^^^^^^^^^
---
  |   expected named lifetime parameter
  |  _expected named lifetime parameter
  | |
4 | |
5 | | fn f4_<'a, 'b>(a: &'a i32, b: &'b i32) -> (&i32, &i32) {
6 | |     loop {}
7 | | }
  | |_-
  |
  = help: this function's return type contains a borrowed value with an elided lifetime, but the lifetime cannot be derived from the arguments
note: these named lifetimes are available to use
 --> /checkout/tests/crashes/146834.rs:3:1
  |
3 | / #![core::contracts::ensures]
4 | |
5 | | fn f4_<'a, 'b>(a: &'a i32, b: &'b i32) -> (&i32, &i32) {
6 | |     loop {}
7 | | }
  | |_^
help: consider using one of the available lifetimes here
  |
3 | #'lifetime ![core::contracts::ensures]
  |  +++++++++

error[E0658]: `#[prelude_import]` is for use by rustc only
##[error] --> /checkout/tests/crashes/146834.rs:3:1
  |
3 | / #![core::contracts::ensures]
4 | |
5 | | fn f4_<'a, 'b>(a: &'a i32, b: &'b i32) -> (&i32, &i32) {
6 | |     loop {}
7 | | }
  | |_^
  |
  = help: add `#![feature(prelude_import)]` to the crate attributes to enable
  = note: this compiler was built on 2025-11-09; consider upgrading it if it is out of date

warning: unused `#[macro_use]` import
##[warning] --> /checkout/tests/crashes/146834.rs:3:1
  |
3 | / #![core::contracts::ensures]
4 | |
5 | | fn f4_<'a, 'b>(a: &'a i32, b: &'b i32) -> (&i32, &i32) {
6 | |     loop {}
7 | | }
  | |_^
  |
  = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default

warning: unused import: `#![core::contracts::ensures]
         
         fn f4_<'a, 'b>(a: &'a i32, b: &'b i32) -> (&i32, &i32) {
             loop {}
         }`
 --> /checkout/tests/crashes/146834.rs:3:1
  |
3 | / #![core::contracts::ensures]
4 | |
5 | | fn f4_<'a, 'b>(a: &'a i32, b: &'b i32) -> (&i32, &i32) {
6 | |     loop {}
7 | | }
  | |_^

warning: lifetime parameter `'a` only used once
##[warning] --> /checkout/tests/crashes/146834.rs:3:1
  |
3 | / #![core::contracts::ensures]
4 | |
5 | | fn f4_<'a, 'b>(a: &'a i32, b: &'b i32) -> (&i32, &i32) {
6 | |     loop {}
7 | | }
  | | ^
  | | |
  | |_this lifetime...
  |   ...is used only here
  |
  = note: requested on the command line with `-W single-use-lifetimes`
help: elide the single-use lifetime
  |
3 - #![core::contracts::ensures]
4 - 
5 - fn f4_<'a, 'b>(a: &'a i32, b: &'b i32) -> (&i32, &i32) {
6 -     loop {}
7 - }
  |

warning: lifetime parameter `'b` only used once
##[warning] --> /checkout/tests/crashes/146834.rs:3:1
  |
3 | / #![core::contracts::ensures]
4 | |
5 | | fn f4_<'a, 'b>(a: &'a i32, b: &'b i32) -> (&i32, &i32) {
6 | |     loop {}
7 | | }
  | | ^
  | | |
  | |_this lifetime...
  |   ...is used only here
  |
help: elide the single-use lifetime
  |
3 - #![core::contracts::ensures]
4 - 
5 - fn f4_<'a, 'b>(a: &'a i32, b: &'b i32) -> (&i32, &i32) {
6 -     loop {}
7 - }
  |

error[E0601]: `main` function not found in crate `146834`
##[error] --> /checkout/tests/crashes/146834.rs:7:2
  |
7 | }
  |  ^ consider adding a `main` function to `/checkout/tests/crashes/146834.rs`

error[E0277]: expected a `Fn(&_)` closure, found `()`
##[error] --> /checkout/tests/crashes/146834.rs:3:1
  |
3 | #![core::contracts::ensures]
  | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  | |
  | expected an `Fn(&_)` closure, found `()`
  | required by a bound introduced by this call
  |
  = help: the trait `for<'a> Fn(&'a _)` is not implemented for `()`
note: required by a bound in `build_check_ensures`
 --> /rustc/FAKE_PREFIX/library/core/src/contracts.rs:19:0

error: aborting due to 6 previous errors; 4 warnings emitted

Some errors have detailed explanations: E0106, E0277, E0601, E0658.
For more information about an error, try `rustc --explain E0106`.

------------------------------------------

error: crashtest no longer crashes/triggers ICE, hooray! Please give it a meaningful name, add a doc-comment to the start of the test explaining why it exists and move it to tests/ui or wherever you see fit. Adding 'Fixes #<issueNr>' to your PR description ensures that the corresponding ticket is auto-closed upon merge. If you want to see verbose output, set `COMPILETEST_VERBOSE_CRASHES=1`.

thread '[crashes] tests/crashes/146834.rs' panicked at src/tools/compiletest/src/runtest/crashes.rs:17:18:
fatal error
stack backtrace:
   5: __rustc::rust_begin_unwind

For more information how to resolve CI failures of this job, visit this link.

rust-log-analyzer · 2025-11-09T21:52:22Z

The job dist-i586-gnu-i586-i686-musl failed! Check out the build log: (web) (plain enhanced) (plain)

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

test [crashes] tests/crashes/142209.rs ... ok
test [crashes] tests/crashes/142529.rs ... ok
test [crashes] tests/crashes/142559.rs ... ok
test [crashes] tests/crashes/142560.rs ... ok
2025-11-09T21:52:05.720312Z ERROR compiletest::runtest: fatal error, panic: "crashtest no longer crashes/triggers ICE, hooray! Please give it a meaningful name, add a doc-comment to the start of the test explaining why it exists and move it to tests/ui or wherever you see fit. Adding 'Fixes #<issueNr>' to your PR description ensures that the corresponding ticket is auto-closed upon merge. If you want to see verbose output, set `COMPILETEST_VERBOSE_CRASHES=1`."
test [crashes] tests/crashes/142773.rs ... FAILED
test [crashes] tests/crashes/142717.rs ... ok
test [crashes] tests/crashes/142866.rs ... ok
test [crashes] tests/crashes/142913.rs ... ok
test [crashes] tests/crashes/143117.rs ... ok
test [crashes] tests/crashes/143174.rs ... ok
test [crashes] tests/crashes/143205.rs ... ok
test [crashes] tests/crashes/143094.rs ... ok
test [crashes] tests/crashes/143358.rs ... ok
2025-11-09T21:52:05.986394Z ERROR compiletest::runtest: fatal error, panic: "crashtest no longer crashes/triggers ICE, hooray! Please give it a meaningful name, add a doc-comment to the start of the test explaining why it exists and move it to tests/ui or wherever you see fit. Adding 'Fixes #<issueNr>' to your PR description ensures that the corresponding ticket is auto-closed upon merge. If you want to see verbose output, set `COMPILETEST_VERBOSE_CRASHES=1`."
test [crashes] tests/crashes/143506.rs ... FAILED
test [crashes] tests/crashes/143498.rs ... ok
test [crashes] tests/crashes/143872.rs ... ignored, ignored if rustc wasn't built with debug assertions
test [crashes] tests/crashes/143806.rs ... ok
test [crashes] tests/crashes/144033.rs ... ok
test [crashes] tests/crashes/143787.rs ... ok
2025-11-09T21:52:06.117693Z ERROR compiletest::runtest: fatal error, panic: "crashtest no longer crashes/triggers ICE, hooray! Please give it a meaningful name, add a doc-comment to the start of the test explaining why it exists and move it to tests/ui or wherever you see fit. Adding 'Fixes #<issueNr>' to your PR description ensures that the corresponding ticket is auto-closed upon merge. If you want to see verbose output, set `COMPILETEST_VERBOSE_CRASHES=1`."
test [crashes] tests/crashes/143896.rs ... FAILED
test [crashes] tests/crashes/144501.rs ... ignored, ignored if rustc wasn't built with debug assertions
test [crashes] tests/crashes/144241.rs ... ok
test [crashes] tests/crashes/144564.rs ... ignored, ignored if rustc wasn't built with debug assertions
test [crashes] tests/crashes/144547.rs ... ok
---
test [crashes] tests/crashes/146706.rs ... ignored, ignored if rustc wasn't built with debug assertions
test [crashes] tests/crashes/146384.rs ... ok
test [crashes] tests/crashes/146754.rs ... ok
test [crashes] tests/crashes/146371.rs ... ok
2025-11-09T21:52:06.673158Z ERROR compiletest::runtest: fatal error, panic: "crashtest no longer crashes/triggers ICE, hooray! Please give it a meaningful name, add a doc-comment to the start of the test explaining why it exists and move it to tests/ui or wherever you see fit. Adding 'Fixes #<issueNr>' to your PR description ensures that the corresponding ticket is auto-closed upon merge. If you want to see verbose output, set `COMPILETEST_VERBOSE_CRASHES=1`."
test [crashes] tests/crashes/146834.rs ... FAILED
test [crashes] tests/crashes/146755.rs ... ok
test [crashes] tests/crashes/146906.rs ... ok
test [crashes] tests/crashes/146903.rs ... ok
test [crashes] tests/crashes/146985.rs ... ok
---

---- [crashes] tests/crashes/142773.rs stdout ----
------rustc stdout------------------------------

------rustc stderr------------------------------
warning: the feature `min_generic_const_args` is incomplete and may not be safe to use and/or cause compiler crashes
##[warning] --> /checkout/tests/crashes/142773.rs:3:12
  |
3 | #![feature(min_generic_const_args)]
  |            ^^^^^^^^^^^^^^^^^^^^^^
  |
  = note: see issue #132980 <https://github.com/rust-lang/rust/issues/132980> for more information
---

error: use of trait associated const without `#[type_const]`
##[error] --> /checkout/tests/crashes/142773.rs:5:36
  |
5 | pub struct EntriesBuffer(Box<[[u8; HashesEntry::LEN]; 5]>);
  |                                    ^^^^^^^^^^^^^^^^
  |
  = note: the declaration in the trait must be marked with `#[type_const]`

error: aborting due to 1 previous error; 2 warnings emitted


------------------------------------------

error: crashtest no longer crashes/triggers ICE, hooray! Please give it a meaningful name, add a doc-comment to the start of the test explaining why it exists and move it to tests/ui or wherever you see fit. Adding 'Fixes #<issueNr>' to your PR description ensures that the corresponding ticket is auto-closed upon merge. If you want to see verbose output, set `COMPILETEST_VERBOSE_CRASHES=1`.

thread '[crashes] tests/crashes/142773.rs' panicked at src/tools/compiletest/src/runtest/crashes.rs:17:18:
fatal error
stack backtrace:
   5: __rustc::rust_begin_unwind
---
---- [crashes] tests/crashes/142773.rs stdout end ----
---- [crashes] tests/crashes/143506.rs stdout ----
------rustc stdout------------------------------

------rustc stderr------------------------------
warning: the feature `generic_const_exprs` is incomplete and may not be safe to use and/or cause compiler crashes
##[warning] --> /checkout/tests/crashes/143506.rs:2:12
  |
2 | #![feature(generic_const_exprs)]
  |            ^^^^^^^^^^^^^^^^^^^
  |
  = note: see issue #76560 <https://github.com/rust-lang/rust/issues/76560> for more information
---

error: the constant `C` is not of type `u32`
##[error] --> /checkout/tests/crashes/143506.rs:9:11
  |
9 |     foo::<C>();
  |           ^ expected `u32`, found `f32`
  |
note: required by a const generic parameter in `foo`
 --> /checkout/tests/crashes/143506.rs:4:8
  |
4 | fn foo<const N: u32>(a: [(); N as usize]) {}
  |        ^^^^^^^^^^^^ required by this const generic parameter in `foo`

error[E0061]: this function takes 1 argument but 0 arguments were supplied
##[error] --> /checkout/tests/crashes/143506.rs:9:5
  |
9 |     foo::<C>();
  |     ^^^^^^^^-- argument #1 of type `[(); N as usize]` is missing
  |
note: function defined here
 --> /checkout/tests/crashes/143506.rs:4:4
  |
4 | fn foo<const N: u32>(a: [(); N as usize]) {}
  |    ^^^               -------------------
help: provide the argument
  |
9 |     foo::<C>(/* [(); N as usize] */);
  |              ++++++++++++++++++++++

warning: unused variable: `a`
##[warning] --> /checkout/tests/crashes/143506.rs:4:22
  |
4 | fn foo<const N: u32>(a: [(); N as usize]) {}
  |                      ^ help: if this is intentional, prefix it with an underscore: `_a`
  |
  = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default

error: aborting due to 2 previous errors; 3 warnings emitted

For more information about this error, try `rustc --explain E0061`.

------------------------------------------

error: crashtest no longer crashes/triggers ICE, hooray! Please give it a meaningful name, add a doc-comment to the start of the test explaining why it exists and move it to tests/ui or wherever you see fit. Adding 'Fixes #<issueNr>' to your PR description ensures that the corresponding ticket is auto-closed upon merge. If you want to see verbose output, set `COMPILETEST_VERBOSE_CRASHES=1`.

thread '[crashes] tests/crashes/143506.rs' panicked at src/tools/compiletest/src/runtest/crashes.rs:17:18:
fatal error
stack backtrace:
   5: __rustc::rust_begin_unwind
---
---- [crashes] tests/crashes/143506.rs stdout end ----
---- [crashes] tests/crashes/143896.rs stdout ----
------rustc stdout------------------------------

------rustc stderr------------------------------
error[E0261]: use of undeclared lifetime name `'a`
##[error] --> /checkout/tests/crashes/143896.rs:7:38
  |
7 | impl dyn TraitA<'_> where (): TraitA<'a,K = 0> {}
  |                                      ^^ undeclared lifetime
  |
  = note: for more information on higher-ranked polymorphism, visit https://doc.rust-lang.org/nomicon/hrtb.html
help: consider making the bound lifetime-generic with a new `'a` lifetime
  |
7 | impl dyn TraitA<'_> where (): for<'a> TraitA<'a,K = 0> {}
  |                               +++++++
help: consider making the bound lifetime-generic with a new `'a` lifetime
  |
7 | impl dyn TraitA<'_> where for<'a> (): TraitA<'a,K = 0> {}
  |                           +++++++
help: consider introducing lifetime `'a` here
  |
7 | impl<'a> dyn TraitA<'_> where (): TraitA<'a,K = 0> {}
  |     ++++

error[E0207]: the type parameter `T` is not constrained by the impl trait, self type, or predicates
##[error] --> /checkout/tests/crashes/143896.rs:6:6
  |
6 | impl<T> TraitA<'_> for () {}
  |      ^ unconstrained type parameter

error: use of trait associated const without `#[type_const]`
##[error] --> /checkout/tests/crashes/143896.rs:7:41
  |
7 | impl dyn TraitA<'_> where (): TraitA<'a,K = 0> {}
  |                                         ^^^^^
  |
  = note: the declaration in the trait must be marked with `#[type_const]`

error: aborting due to 3 previous errors

Some errors have detailed explanations: E0207, E0261.
For more information about an error, try `rustc --explain E0207`.

------------------------------------------

error: crashtest no longer crashes/triggers ICE, hooray! Please give it a meaningful name, add a doc-comment to the start of the test explaining why it exists and move it to tests/ui or wherever you see fit. Adding 'Fixes #<issueNr>' to your PR description ensures that the corresponding ticket is auto-closed upon merge. If you want to see verbose output, set `COMPILETEST_VERBOSE_CRASHES=1`.

thread '[crashes] tests/crashes/143896.rs' panicked at src/tools/compiletest/src/runtest/crashes.rs:17:18:
fatal error
stack backtrace:
   5: __rustc::rust_begin_unwind
---
---- [crashes] tests/crashes/143896.rs stdout end ----
---- [crashes] tests/crashes/146834.rs stdout ----
------rustc stdout------------------------------

------rustc stderr------------------------------
error[E0658]: use of unstable library feature `contracts`
##[error] --> /checkout/tests/crashes/146834.rs:3:4
  |
3 | #![core::contracts::ensures]
  |    ^^^^^^^^^^^^^^^^^^^^^^^^
---
  |   expected named lifetime parameter
  |  _expected named lifetime parameter
  | |
4 | |
5 | | fn f4_<'a, 'b>(a: &'a i32, b: &'b i32) -> (&i32, &i32) {
6 | |     loop {}
7 | | }
  | |_-
  |
  = help: this function's return type contains a borrowed value with an elided lifetime, but the lifetime cannot be derived from the arguments
note: these named lifetimes are available to use
 --> /checkout/tests/crashes/146834.rs:3:1
  |
3 | / #![core::contracts::ensures]
4 | |
5 | | fn f4_<'a, 'b>(a: &'a i32, b: &'b i32) -> (&i32, &i32) {
6 | |     loop {}
7 | | }
  | |_^
help: consider using one of the available lifetimes here
  |
3 | #'lifetime ![core::contracts::ensures]
  |  +++++++++

error[E0658]: `#[prelude_import]` is for use by rustc only
##[error] --> /checkout/tests/crashes/146834.rs:3:1
  |
3 | / #![core::contracts::ensures]
4 | |
5 | | fn f4_<'a, 'b>(a: &'a i32, b: &'b i32) -> (&i32, &i32) {
6 | |     loop {}
7 | | }
  | |_^
  |
  = help: add `#![feature(prelude_import)]` to the crate attributes to enable
  = note: this compiler was built on 2025-11-09; consider upgrading it if it is out of date

warning: unused `#[macro_use]` import
##[warning] --> /checkout/tests/crashes/146834.rs:3:1
  |
3 | / #![core::contracts::ensures]
4 | |
5 | | fn f4_<'a, 'b>(a: &'a i32, b: &'b i32) -> (&i32, &i32) {
6 | |     loop {}
7 | | }
  | |_^
  |
  = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default

warning: unused import: `#![core::contracts::ensures]
         
         fn f4_<'a, 'b>(a: &'a i32, b: &'b i32) -> (&i32, &i32) {
             loop {}
         }`
 --> /checkout/tests/crashes/146834.rs:3:1
  |
3 | / #![core::contracts::ensures]
4 | |
5 | | fn f4_<'a, 'b>(a: &'a i32, b: &'b i32) -> (&i32, &i32) {
6 | |     loop {}
7 | | }
  | |_^

warning: lifetime parameter `'a` only used once
##[warning] --> /checkout/tests/crashes/146834.rs:3:1
  |
3 | / #![core::contracts::ensures]
4 | |
5 | | fn f4_<'a, 'b>(a: &'a i32, b: &'b i32) -> (&i32, &i32) {
6 | |     loop {}
7 | | }
  | | ^
  | | |
  | |_this lifetime...
  |   ...is used only here
  |
  = note: requested on the command line with `-W single-use-lifetimes`
help: elide the single-use lifetime
  |
3 - #![core::contracts::ensures]
4 - 
5 - fn f4_<'a, 'b>(a: &'a i32, b: &'b i32) -> (&i32, &i32) {
6 -     loop {}
7 - }
  |

warning: lifetime parameter `'b` only used once
##[warning] --> /checkout/tests/crashes/146834.rs:3:1
  |
3 | / #![core::contracts::ensures]
4 | |
5 | | fn f4_<'a, 'b>(a: &'a i32, b: &'b i32) -> (&i32, &i32) {
6 | |     loop {}
7 | | }
  | | ^
  | | |
  | |_this lifetime...
  |   ...is used only here
  |
help: elide the single-use lifetime
  |
3 - #![core::contracts::ensures]
4 - 
5 - fn f4_<'a, 'b>(a: &'a i32, b: &'b i32) -> (&i32, &i32) {
6 -     loop {}
7 - }
  |

error[E0601]: `main` function not found in crate `146834`
##[error] --> /checkout/tests/crashes/146834.rs:7:2
  |
7 | }
  |  ^ consider adding a `main` function to `/checkout/tests/crashes/146834.rs`

error[E0277]: expected a `Fn(&_)` closure, found `()`
##[error] --> /checkout/tests/crashes/146834.rs:3:1
  |
3 | #![core::contracts::ensures]
  | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  | |
  | expected an `Fn(&_)` closure, found `()`
  | required by a bound introduced by this call
  |
  = help: the trait `for<'a> Fn(&'a _)` is not implemented for `()`
note: required by a bound in `build_check_ensures`
 --> /rustc/FAKE_PREFIX/library/core/src/contracts.rs:19:0

error: aborting due to 6 previous errors; 4 warnings emitted

Some errors have detailed explanations: E0106, E0277, E0601, E0658.
For more information about an error, try `rustc --explain E0106`.

------------------------------------------

error: crashtest no longer crashes/triggers ICE, hooray! Please give it a meaningful name, add a doc-comment to the start of the test explaining why it exists and move it to tests/ui or wherever you see fit. Adding 'Fixes #<issueNr>' to your PR description ensures that the corresponding ticket is auto-closed upon merge. If you want to see verbose output, set `COMPILETEST_VERBOSE_CRASHES=1`.

thread '[crashes] tests/crashes/146834.rs' panicked at src/tools/compiletest/src/runtest/crashes.rs:17:18:
fatal error
stack backtrace:
   5: __rustc::rust_begin_unwind

rust-bors · 2025-11-09T21:52:56Z

💔 Test for 4187600 failed: CI. Failed jobs:

try - dist-i586-gnu-i586-i686-musl (web logs, extended logs)

add several older crashtests Includes rust-lang#114880, rust-lang#119440, rust-lang#126418, rust-lang#138274, rust-lang#138660. Since their issue numbers are all smaller than 140000, this has no conflicts with rust-lang#147857.

add several older crashtests Includes rust-lang#114880, rust-lang#119940, rust-lang#138274, rust-lang#138660. Since their issue numbers are all smaller than 140000, this has no conflicts with rust-lang#147857.

Rollup merge of #149947 - cyrgani:crashtests, r=Mark-Simulacrum add several older crashtests Includes #114880, #119940, #138274, #138660. Since their issue numbers are all smaller than 140000, this has no conflicts with #147857.

rust-bors · 2026-08-14T17:09:24Z

☔ The latest upstream changes (presumably #161093) made this pull request unmergeable. Please resolve the merge conflicts by rebasing.

rustbot added S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. labels Oct 18, 2025

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matthiaskrgr force-pushed the crash_tests_oct_18 branch from 8069e6a to b83fb23 Compare October 19, 2025 11:22

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matthiaskrgr force-pushed the crash_tests_oct_18 branch from b83fb23 to 08138c1 Compare October 19, 2025 18:40

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matthiaskrgr marked this pull request as ready for review October 24, 2025 06:05

rustbot added S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. and removed S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. labels Oct 24, 2025

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jieyouxu approved these changes Nov 1, 2025

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rustbot added S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Nov 1, 2025

crashes: more tests

51f9862

matthiaskrgr force-pushed the crash_tests_oct_18 branch from 08138c1 to 51f9862 Compare November 9, 2025 20:48

matthiaskrgr added S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. and removed S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. labels Nov 9, 2025

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rust-bors Bot added a commit that referenced this pull request Nov 9, 2025

Auto merge of #147857 - matthiaskrgr:crash_tests_oct_18, r=<try>

4187600

crashes: more tests try-job: aarch64-apple try-job: x86_64-msvc-1 try-job: x86_64-gnu try-job: dist-i586-gnu-i586-i686-musl try-job: test-various

jieyouxu added S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Nov 11, 2025

cyrgani mentioned this pull request Dec 13, 2025

add several older crashtests #149947

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