jiebi/CodeConvo huggingface dataset:
Code change:
() Errors: Removing the makes this generate appropriate error messages. Seems like combining and is rather uncommon, at least there are no other issues with both labels yet. modify labels: I-ICE, T-compiler, requires-nightly, F-associatedtypedefaults, F-genericassociatedtypes, A-traits, A-associated-items, C-bug
Okay, this bug allows you to do basically everything. For example () () arbitrary transmutes (as long as LLVM doesn’t complain like it did above) ()
Error: Parsing relabel command in failed: ...'fy labels:' '"I-unsound'... Please let know if you're having trouble with this bot.
Error: Label can only be set by Rust team members Please let know if you're having trouble with this bot.
Error: Parsing relabel command in failed: ...'fy labels:' '"I-unsound'... Please let know if you're having trouble with this bot.
Error: Label can only be set by Rust team members Please let know if you're having trouble with this bot.
Here's another one ICE's with:
Triage: This is no longer ICE with the latest nightly, marking as E-needs-test.
Looks like this was the fix:

Related discussion:
text: <ins> #![feature(type_alias_impl_trait)] #![feature(impl_trait_in_bindings)] #![allow(incomplete_features)] type FooArg<'a> = &'a dyn ToString; type FooRet = impl std::fmt::Debug; type FooItem = Box<dyn Fn(FooArg) -> FooRet>; type Foo = impl Iterator<Item = FooItem>; //~ ERROR: type mismatch #[repr(C)] struct Bar(u8); impl Iterator for Bar { type Item = FooItem; fn next(&mut self) -> Option<Self::Item> { Some(Box::new(quux)) } } fn quux(st: FooArg) -> FooRet { Some(st.to_string()) } fn ham() -> Foo { Bar(1) } fn oof() -> impl std::fmt::Debug { let mut bar = ham(); let func = bar.next().unwrap(); return func(&"oof"); } fn main() { let _ = oof(); } </ins>
Code change:
() Errors: Removing the makes this generate appropriate error messages. Seems like combining and is rather uncommon, at least there are no other issues with both labels yet. modify labels: I-ICE, T-compiler, requires-nightly, F-associatedtypedefaults, F-genericassociatedtypes, A-traits, A-associated-items, C-bug
Okay, this bug allows you to do basically everything. For example () () arbitrary transmutes (as long as LLVM doesn’t complain like it did above) ()
Error: Parsing relabel command in failed: ...'fy labels:' '"I-unsound'... Please let know if you're having trouble with this bot.
Error: Label can only be set by Rust team members Please let know if you're having trouble with this bot.
Error: Parsing relabel command in failed: ...'fy labels:' '"I-unsound'... Please let know if you're having trouble with this bot.
Error: Label can only be set by Rust team members Please let know if you're having trouble with this bot.
Here's another one ICE's with:
Triage: This is no longer ICE with the latest nightly, marking as E-needs-test.
Looks like this was the fix:

Related discussion:
text: <ins> error[E0271]: type mismatch resolving `<Bar as Iterator>::Item == Box<(dyn for<'r> Fn(&'r (dyn ToString + 'r)) -> Option<String> + 'static)>` --> $DIR/issue-70877.rs:9:12 | LL | type FooRet = impl std::fmt::Debug; |               -------------------- the expected opaque type ... LL | type Foo = impl Iterator<Item = FooItem>; |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected opaque type, found enum `Option` | = note: expected struct `Box<(dyn for<'r> Fn(&'r (dyn ToString + 'r)) -> impl Debug + 'static)>` found struct `Box<(dyn for<'r> Fn(&'r (dyn ToString + 'r)) -> Option<String> + 'static)>` error: aborting due to previous error For more information about this error, try `rustc --explain E0271`. </ins>
Code change:
() Errors: Removing the makes this generate appropriate error messages. Seems like combining and is rather uncommon, at least there are no other issues with both labels yet. modify labels: I-ICE, T-compiler, requires-nightly, F-associatedtypedefaults, F-genericassociatedtypes, A-traits, A-associated-items, C-bug
Okay, this bug allows you to do basically everything. For example () () arbitrary transmutes (as long as LLVM doesn’t complain like it did above) ()
Error: Parsing relabel command in failed: ...'fy labels:' '"I-unsound'... Please let know if you're having trouble with this bot.
Error: Label can only be set by Rust team members Please let know if you're having trouble with this bot.
Error: Parsing relabel command in failed: ...'fy labels:' '"I-unsound'... Please let know if you're having trouble with this bot.
Error: Label can only be set by Rust team members Please let know if you're having trouble with this bot.
Here's another one ICE's with:
Triage: This is no longer ICE with the latest nightly, marking as E-needs-test.
Looks like this was the fix:

Related discussion:
text: <ins> // check-pass // Regression test of #70944, should compile fine. use std::ops::Index; pub struct KeyA; pub struct KeyB; pub struct KeyC; pub trait Foo: Index<KeyA> + Index<KeyB> + Index<KeyC> {} pub trait FooBuilder { type Inner: Foo; fn inner(&self) -> &Self::Inner; } pub fn do_stuff(foo: &impl FooBuilder) { let inner = foo.inner(); &inner[KeyA]; &inner[KeyB]; &inner[KeyC]; } fn main() {} </ins>
Code change:
() Errors: Removing the makes this generate appropriate error messages. Seems like combining and is rather uncommon, at least there are no other issues with both labels yet. modify labels: I-ICE, T-compiler, requires-nightly, F-associatedtypedefaults, F-genericassociatedtypes, A-traits, A-associated-items, C-bug
Okay, this bug allows you to do basically everything. For example () () arbitrary transmutes (as long as LLVM doesn’t complain like it did above) ()
Error: Parsing relabel command in failed: ...'fy labels:' '"I-unsound'... Please let know if you're having trouble with this bot.
Error: Label can only be set by Rust team members Please let know if you're having trouble with this bot.
Error: Parsing relabel command in failed: ...'fy labels:' '"I-unsound'... Please let know if you're having trouble with this bot.
Error: Label can only be set by Rust team members Please let know if you're having trouble with this bot.
Here's another one ICE's with:
Triage: This is no longer ICE with the latest nightly, marking as E-needs-test.
Looks like this was the fix:

Related discussion:
text: <ins> // check-pass #![feature(trait_alias)] struct Bar; trait Foo {} impl Foo for Bar {} trait Baz = Foo where Bar: Foo; fn new() -> impl Baz { Bar } fn main() { let _ = new(); } </ins>
Code change:
() Errors: Removing the makes this generate appropriate error messages. Seems like combining and is rather uncommon, at least there are no other issues with both labels yet. modify labels: I-ICE, T-compiler, requires-nightly, F-associatedtypedefaults, F-genericassociatedtypes, A-traits, A-associated-items, C-bug
Okay, this bug allows you to do basically everything. For example () () arbitrary transmutes (as long as LLVM doesn’t complain like it did above) ()
Error: Parsing relabel command in failed: ...'fy labels:' '"I-unsound'... Please let know if you're having trouble with this bot.
Error: Label can only be set by Rust team members Please let know if you're having trouble with this bot.
Error: Parsing relabel command in failed: ...'fy labels:' '"I-unsound'... Please let know if you're having trouble with this bot.
Error: Label can only be set by Rust team members Please let know if you're having trouble with this bot.
Here's another one ICE's with:
Triage: This is no longer ICE with the latest nightly, marking as E-needs-test.
Looks like this was the fix:

Related discussion:
text: <ins> #![feature(unsize)] use std::marker::Unsize; pub trait CastTo<T: ?Sized>: Unsize<T> { fn cast_to(&self) -> &T; } impl<T: ?Sized, U: ?Sized + Unsize<T>> CastTo<T> for U { fn cast_to(&self) -> &T { self } } impl<T: ?Sized> Cast for T {} pub trait Cast { fn cast<T: ?Sized>(&self) -> &T where Self: CastTo<T>, { self } } pub trait Foo: CastTo<[i32]> {} impl Foo for [i32; 0] {} fn main() { let x: &dyn Foo = &[]; let x = x.cast::<[i32]>(); //~^ ERROR: the trait bound `dyn Foo: CastTo<[i32]>` is not satisfied } </ins>
Code change:
() Errors: Removing the makes this generate appropriate error messages. Seems like combining and is rather uncommon, at least there are no other issues with both labels yet. modify labels: I-ICE, T-compiler, requires-nightly, F-associatedtypedefaults, F-genericassociatedtypes, A-traits, A-associated-items, C-bug
Okay, this bug allows you to do basically everything. For example () () arbitrary transmutes (as long as LLVM doesn’t complain like it did above) ()
Error: Parsing relabel command in failed: ...'fy labels:' '"I-unsound'... Please let know if you're having trouble with this bot.
Error: Label can only be set by Rust team members Please let know if you're having trouble with this bot.
Error: Parsing relabel command in failed: ...'fy labels:' '"I-unsound'... Please let know if you're having trouble with this bot.
Error: Label can only be set by Rust team members Please let know if you're having trouble with this bot.
Here's another one ICE's with:
Triage: This is no longer ICE with the latest nightly, marking as E-needs-test.
Looks like this was the fix:

Related discussion:
text: <ins> error[E0277]: the trait bound `dyn Foo: CastTo<[i32]>` is not satisfied --> $DIR/issue-71659.rs:30:15 | LL |     let x = x.cast::<[i32]>(); |               ^^^^ the trait `CastTo<[i32]>` is not implemented for `dyn Foo` error: aborting due to previous error For more information about this error, try `rustc --explain E0277`. </ins>
Code change:
() Errors: Removing the makes this generate appropriate error messages. Seems like combining and is rather uncommon, at least there are no other issues with both labels yet. modify labels: I-ICE, T-compiler, requires-nightly, F-associatedtypedefaults, F-genericassociatedtypes, A-traits, A-associated-items, C-bug
Okay, this bug allows you to do basically everything. For example () () arbitrary transmutes (as long as LLVM doesn’t complain like it did above) ()
Error: Parsing relabel command in failed: ...'fy labels:' '"I-unsound'... Please let know if you're having trouble with this bot.
Error: Label can only be set by Rust team members Please let know if you're having trouble with this bot.
Error: Parsing relabel command in failed: ...'fy labels:' '"I-unsound'... Please let know if you're having trouble with this bot.
Error: Label can only be set by Rust team members Please let know if you're having trouble with this bot.
Here's another one ICE's with:
Triage: This is no longer ICE with the latest nightly, marking as E-needs-test.
Looks like this was the fix:

Related discussion:
text: <ins> pub trait Callback { fn cb(); } pub trait Processing { type Call: Callback; } fn f<P: Processing + ?Sized>() { P::Call::cb(); } fn main() { struct MyCall; f::<dyn Processing<Call = MyCall>>(); //~^ ERROR: the trait bound `MyCall: Callback` is not satisfied } </ins>
Code change:
() Errors: Removing the makes this generate appropriate error messages. Seems like combining and is rather uncommon, at least there are no other issues with both labels yet. modify labels: I-ICE, T-compiler, requires-nightly, F-associatedtypedefaults, F-genericassociatedtypes, A-traits, A-associated-items, C-bug
Okay, this bug allows you to do basically everything. For example () () arbitrary transmutes (as long as LLVM doesn’t complain like it did above) ()
Error: Parsing relabel command in failed: ...'fy labels:' '"I-unsound'... Please let know if you're having trouble with this bot.
Error: Label can only be set by Rust team members Please let know if you're having trouble with this bot.
Error: Parsing relabel command in failed: ...'fy labels:' '"I-unsound'... Please let know if you're having trouble with this bot.
Error: Label can only be set by Rust team members Please let know if you're having trouble with this bot.
Here's another one ICE's with:
Triage: This is no longer ICE with the latest nightly, marking as E-needs-test.
Looks like this was the fix:

Related discussion:
text: <ins> error[E0277]: the trait bound `MyCall: Callback` is not satisfied --> $DIR/issue-75707.rs:15:5 | LL | fn f<P: Processing + ?Sized>() { |         ---------- required by this bound in `f` ... LL |     f::<dyn Processing<Call = MyCall>>(); |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `Callback` is not implemented for `MyCall` error: aborting due to previous error For more information about this error, try `rustc --explain E0277`. </ins>
Code change:
<!-- Thank you for finding an Internal Compiler Error! If possible, try to provide a minimal verifiable example. You can read "Rust Bug Minimization Patterns" for how to create smaller examples. --(I know this is probably incorrect code, but this is what triggered the internal compiler error). <!-- If you're using the stable version of the compiler, you should also check if the bug also exists in the beta or nightly versions. --: <!-- Include a backtrace in the code block by setting in your environment. E.g. . --<details<summary<strongBacktrace</strong</summary<p</p</details
Assigning as and removing .
44 doesn't have the ICE.
shows that this can result in no user-facing error message. I suggest increasing priority to .

Related discussion:
text: use crate::infer::error_reporting::nice_region_error::NiceRegionError; use crate::infer::lexical_region_resolve::RegionResolutionError; <del> use crate::infer::{Subtype, TyCtxtInferExt, ValuePairs}; </del> <ins> use crate::infer::{Subtype, ValuePairs}; </ins> use crate::traits::ObligationCauseCode::CompareImplMethodObligation; use rustc_errors::ErrorReported; use rustc_hir as hir;
Code change:
<!-- Thank you for finding an Internal Compiler Error! If possible, try to provide a minimal verifiable example. You can read "Rust Bug Minimization Patterns" for how to create smaller examples. --(I know this is probably incorrect code, but this is what triggered the internal compiler error). <!-- If you're using the stable version of the compiler, you should also check if the bug also exists in the beta or nightly versions. --: <!-- Include a backtrace in the code block by setting in your environment. E.g. . --<details<summary<strongBacktrace</strong</summary<p</p</details
Assigning as and removing .
44 doesn't have the ICE.
shows that this can result in no user-facing error message. I suggest increasing priority to .

Related discussion:
text: } fn emit_err(&self, sp: Span, expected: Ty<'tcx>, found: Ty<'tcx>, trait_def_id: DefId) { <del> let tcx = self.tcx(); </del> let trait_sp = self.tcx().def_span(trait_def_id); let mut err = self .tcx()
Code change:
<!-- Thank you for finding an Internal Compiler Error! If possible, try to provide a minimal verifiable example. You can read "Rust Bug Minimization Patterns" for how to create smaller examples. --(I know this is probably incorrect code, but this is what triggered the internal compiler error). <!-- If you're using the stable version of the compiler, you should also check if the bug also exists in the beta or nightly versions. --: <!-- Include a backtrace in the code block by setting in your environment. E.g. . --<details<summary<strongBacktrace</strong</summary<p</p</details
Assigning as and removing .
44 doesn't have the ICE.
shows that this can result in no user-facing error message. I suggest increasing priority to .

Related discussion:
text: ); } <del> if let Some((expected, found)) = tcx .infer_ctxt() .enter(|infcx| infcx.expected_found_str_ty(&ExpectedFound { expected, found })) </del> <ins> if let Some((expected, found)) = self.infcx.expected_found_str_ty(&ExpectedFound { expected, found }) </ins> { // Highlighted the differences when showing the "expected/found" note. err.note_expected_found(&"", expected, &"", found);
Code change:
<!-- Thank you for finding an Internal Compiler Error! If possible, try to provide a minimal verifiable example. You can read "Rust Bug Minimization Patterns" for how to create smaller examples. --(I know this is probably incorrect code, but this is what triggered the internal compiler error). <!-- If you're using the stable version of the compiler, you should also check if the bug also exists in the beta or nightly versions. --: <!-- Include a backtrace in the code block by setting in your environment. E.g. . --<details<summary<strongBacktrace</strong</summary<p</p</details
Assigning as and removing .
44 doesn't have the ICE.
shows that this can result in no user-facing error message. I suggest increasing priority to .

Related discussion:
text: <ins> // Regression test for issue #74918 // Tests that we don't ICE after emitting an error struct ChunkingIterator<T, S: 'static + Iterator<Item = T>> { source: S, } impl<T, S: Iterator<Item = T>> Iterator for ChunkingIterator<T, S> { type Item = IteratorChunk<T, S>; //~ ERROR missing lifetime fn next(&mut self) -> Option<IteratorChunk<T, S>> { //~ ERROR `impl` todo!() } } struct IteratorChunk<'a, T, S: Iterator<Item = T>> { source: &'a mut S, } impl<T, S: Iterator<Item = T>> Iterator for IteratorChunk<'_, T, S> { type Item = T; fn next(&mut self) -> Option<T> { todo!() } } fn main() {} </ins>
Code change:
<!-- Thank you for finding an Internal Compiler Error! If possible, try to provide a minimal verifiable example. You can read "Rust Bug Minimization Patterns" for how to create smaller examples. --(I know this is probably incorrect code, but this is what triggered the internal compiler error). <!-- If you're using the stable version of the compiler, you should also check if the bug also exists in the beta or nightly versions. --: <!-- Include a backtrace in the code block by setting in your environment. E.g. . --<details<summary<strongBacktrace</strong</summary<p</p</details
Assigning as and removing .
44 doesn't have the ICE.
shows that this can result in no user-facing error message. I suggest increasing priority to .

Related discussion:
text: <ins> error[E0106]: missing lifetime specifier --> $DIR/issue-74918-missing-lifetime.rs:9:31 | LL |     type Item = IteratorChunk<T, S>; |                               ^ expected named lifetime parameter | help: consider introducing a named lifetime parameter | LL |     type Item<'a> = IteratorChunk<<'a>T, S>; |              ^^^^                 ^^^^ error: `impl` item signature doesn't match `trait` item signature --> $DIR/issue-74918-missing-lifetime.rs:11:5 | LL |     fn next(&mut self) -> Option<IteratorChunk<T, S>> { |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ found `fn(&mut ChunkingIterator<T, S>) -> std::option::Option<IteratorChunk<'_, T, S>>` | ::: $SRC_DIR/core/src/iter/traits/iterator.rs:LL:COL | LL |     fn next(&mut self) -> Option<Self::Item>; |     ----------------------------------------- expected `fn(&mut ChunkingIterator<T, S>) -> std::option::Option<IteratorChunk<'static, _, _>>` | = note: expected `fn(&mut ChunkingIterator<T, S>) -> std::option::Option<IteratorChunk<'static, _, _>>` found `fn(&mut ChunkingIterator<T, S>) -> std::option::Option<IteratorChunk<'_, _, _>>` = help: the lifetime requirements from the `impl` do not correspond to the requirements in the `trait` = help: verify the lifetime relationships in the `trait` and `impl` between the `self` argument, the other inputs and its output error: aborting due to 2 previous errors For more information about this error, try `rustc --explain E0106`. </ins>
Code change:
<!-- Thank you for finding an Internal Compiler Error! If possible, try to provide a minimal verifiable example. You can read "Rust Bug Minimization Patterns" for how to create smaller examples. --(I know this is probably incorrect code, but this is what triggered the internal compiler error). <!-- If you're using the stable version of the compiler, you should also check if the bug also exists in the beta or nightly versions. --: <!-- Include a backtrace in the code block by setting in your environment. E.g. . --<details<summary<strongBacktrace</strong</summary<p</p</details
Assigning as and removing .
44 doesn't have the ICE.
shows that this can result in no user-facing error message. I suggest increasing priority to .

Related discussion:
text: <ins> // Regresison test for issue #75361 // Tests that we don't ICE on mismatched types with inference variables trait MyTrait { type Item; } pub trait Graph { type EdgeType; fn adjacent_edges(&self) -> Box<dyn MyTrait<Item = &Self::EdgeType>>; } impl<T> Graph for T { type EdgeType = T; fn adjacent_edges(&self) -> Box<dyn MyTrait<Item = &Self::EdgeType> + '_> { //~ ERROR `impl` panic!() } } fn main() {} </ins>
Code change:
<!-- Thank you for finding an Internal Compiler Error! If possible, try to provide a minimal verifiable example. You can read "Rust Bug Minimization Patterns" for how to create smaller examples. --(I know this is probably incorrect code, but this is what triggered the internal compiler error). <!-- If you're using the stable version of the compiler, you should also check if the bug also exists in the beta or nightly versions. --: <!-- Include a backtrace in the code block by setting in your environment. E.g. . --<details<summary<strongBacktrace</strong</summary<p</p</details
Assigning as and removing .
44 doesn't have the ICE.
shows that this can result in no user-facing error message. I suggest increasing priority to .

Related discussion:
text: <ins> error: `impl` item signature doesn't match `trait` item signature --> $DIR/issue-75361-mismatched-impl.rs:18:3 | LL |   fn adjacent_edges(&self) -> Box<dyn MyTrait<Item = &Self::EdgeType>>; |   --------------------------------------------------------------------- expected `fn(&T) -> std::boxed::Box<(dyn MyTrait<Item = &_> + 'static)>` ... LL |   fn adjacent_edges(&self) -> Box<dyn MyTrait<Item = &Self::EdgeType> + '_> { |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ found `fn(&T) -> std::boxed::Box<dyn MyTrait<Item = &_>>` | = note: expected `fn(&T) -> std::boxed::Box<(dyn MyTrait<Item = &T> + 'static)>` found `fn(&T) -> std::boxed::Box<dyn MyTrait<Item = &T>>` help: the lifetime requirements from the `impl` do not correspond to the requirements in the `trait` --> $DIR/issue-75361-mismatched-impl.rs:12:55 | LL |   fn adjacent_edges(&self) -> Box<dyn MyTrait<Item = &Self::EdgeType>>; |                                                       ^^^^^^^^^^^^^^ consider borrowing this type parameter in the trait error: aborting due to previous error </ins>
Code change:
Crash occurs in both 1.46.0 beta and in current nightly. : <!-- TRIAGEBOTSTART --<!-- TRIAGEBOTASSIGNSTART --<!-- TRIAGEBOTASSIGNDATASTARTTRIAGEBOTASSIGNDATAEND --<!-- TRIAGEBOTASSIGNEND --<!-- TRIAGEBOTEND --
I made the false assumption that this was rustc crashing, but it's actually the binary that crashes upon running it.
Cc We probably just want to ban track caller on main (and maybe any lang item function?)
claim
Same with : results in edit: I think is a more general problem so I won't change that here
Assigning as and removing .

Related discussion:
text: use rustc_middle::ty::{self, Ty, TyCtxt}; use rustc_middle::util; use rustc_session::config::EntryFnType; <del> use rustc_span::{Span, DUMMY_SP}; </del> <ins> use rustc_span::{symbol::sym, Span, DUMMY_SP}; </ins> use rustc_target::spec::abi::Abi; use rustc_trait_selection::traits::error_reporting::InferCtxtExt as _; use rustc_trait_selection::traits::{
Code change:
Crash occurs in both 1.46.0 beta and in current nightly. : <!-- TRIAGEBOTSTART --<!-- TRIAGEBOTASSIGNSTART --<!-- TRIAGEBOTASSIGNDATASTARTTRIAGEBOTASSIGNDATAEND --<!-- TRIAGEBOTASSIGNEND --<!-- TRIAGEBOTEND --
I made the false assumption that this was rustc crashing, but it's actually the binary that crashes upon running it.
Cc We probably just want to ban track caller on main (and maybe any lang item function?)
claim
Same with : results in edit: I think is a more general problem so I won't change that here
Assigning as and removing .

Related discussion:
text: .emit(); error = true; } <ins> for attr in it.attrs { if attr.check_name(sym::track_caller) { tcx.sess .struct_span_err( attr.span, "`main` function is not allowed to be `#[track_caller]`", ) .span_label( main_span, "`main` function is not allowed to be `#[track_caller]`", ) .emit(); error = true; } } </ins> if error { return; }