Closed
Description
Stumbled across this compiler panic and replicated it with this. Likely related to the match statement.
Code
EDIT: A smaller example here: https://play.rust-lang.org/?version=nightly&mode=debug&edition=2021&gist=b35b23433ea143234d37f0e528fe559e
#![feature(return_position_impl_trait_in_trait)]
struct TestA {}
struct TestB {}
impl TestTrait for TestA {
type Output = ();
}
impl TestTrait for TestB {
type Output = ();
}
trait TestTrait {
type Output;
}
impl<A, B> TestTrait for GreeterOutput<A, B>
where
A: TestTrait<Output = ()>,
B: TestTrait<Output = ()>,
{
type Output = ();
}
enum GreeterOutput<A, B>
where
A: TestTrait<Output = ()>,
B: TestTrait<Output = ()>,
{
SayHello(A),
SayGoodbye(B),
}
trait Greeter {
fn test_func(&self, func: &str) -> impl TestTrait<Output = ()> {
match func {
"SayHello" => GreeterOutput::SayHello(TestA {}),
"SayGoodbye" => GreeterOutput::SayGoodbye(TestB {}),
_ => GreeterOutput::SayHello(TestA {}),
}
}
}Meta
rustc --version --verbose:
rustc 1.68.0-nightly (9c07efe84 2022-12-16)
binary: rustc
commit-hash: 9c07efe84f28a44f3044237696acc295aa407ee5
commit-date: 2022-12-16
host: x86_64-unknown-linux-gnu
release: 1.68.0-nightly
LLVM version: 15.0.6
Error output
Backtrace
Compiling trait-error-test v0.1.0 (/home/lemon/Data/trait-error-test)
warning: the feature `return_position_impl_trait_in_trait` is incomplete and may not be safe to use and/or cause compiler crashes
--> src/main.rs:1:12
|
1 | #![feature(return_position_impl_trait_in_trait)]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
= note: see issue #91611 <https://github.com/rust-lang/rust/issues/91611> for more information
= note: `#[warn(incomplete_features)]` on by default
thread '<unnamed>' panicked at 'assertion failed: `(left == right)`
left: `impl TestTrait<Output = ()>`,
right: `impl TestTrait<Output = ()>`', compiler/rustc_hir_typeck/src/_match.rs:543:33
stack backtrace:
0: 0x7fbba22fa85a - std::backtrace_rs::backtrace::libunwind::trace::hf3e23dba944728e7
at /rustc/9c07efe84f28a44f3044237696acc295aa407ee5/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5
1: 0x7fbba22fa85a - std::backtrace_rs::backtrace::trace_unsynchronized::ha7a661dbe14f9bec
at /rustc/9c07efe84f28a44f3044237696acc295aa407ee5/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
2: 0x7fbba22fa85a - std::sys_common::backtrace::_print_fmt::h8bb3e793399a1d31
at /rustc/9c07efe84f28a44f3044237696acc295aa407ee5/library/std/src/sys_common/backtrace.rs:65:5
3: 0x7fbba22fa85a - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h8f001b4156af7ff0
at /rustc/9c07efe84f28a44f3044237696acc295aa407ee5/library/std/src/sys_common/backtrace.rs:44:22
4: 0x7fbba235d36e - core::fmt::write::h98c67bacb0ad9cb8
at /rustc/9c07efe84f28a44f3044237696acc295aa407ee5/library/core/src/fmt/mod.rs:1208:17
5: 0x7fbba22eabd5 - std::io::Write::write_fmt::h21d43ee83b8bf3da
at /rustc/9c07efe84f28a44f3044237696acc295aa407ee5/library/std/src/io/mod.rs:1682:15
6: 0x7fbba22fa625 - std::sys_common::backtrace::_print::hed3e659c4722fff2
at /rustc/9c07efe84f28a44f3044237696acc295aa407ee5/library/std/src/sys_common/backtrace.rs:47:5
7: 0x7fbba22fa625 - std::sys_common::backtrace::print::hf3af686623d05885
at /rustc/9c07efe84f28a44f3044237696acc295aa407ee5/library/std/src/sys_common/backtrace.rs:34:9
8: 0x7fbba22fd36f - std::panicking::default_hook::{{closure}}::hfbc532e2813a4fd8
at /rustc/9c07efe84f28a44f3044237696acc295aa407ee5/library/std/src/panicking.rs:267:22
9: 0x7fbba22fd0ab - std::panicking::default_hook::hf22d9a6bedeb8cbb
at /rustc/9c07efe84f28a44f3044237696acc295aa407ee5/library/std/src/panicking.rs:286:9
10: 0x7fbba22fdb8c - std::panicking::rust_panic_with_hook::h2e7c62506c5adf89
at /rustc/9c07efe84f28a44f3044237696acc295aa407ee5/library/std/src/panicking.rs:688:13
11: 0x7fbba22fd929 - std::panicking::begin_panic_handler::{{closure}}::h691824ad0687f3c2
at /rustc/9c07efe84f28a44f3044237696acc295aa407ee5/library/std/src/panicking.rs:579:13
12: 0x7fbba22fad0c - std::sys_common::backtrace::__rust_end_short_backtrace::hc3ca2684c4e495b8
at /rustc/9c07efe84f28a44f3044237696acc295aa407ee5/library/std/src/sys_common/backtrace.rs:137:18
13: 0x7fbba22fd632 - rust_begin_unwind
at /rustc/9c07efe84f28a44f3044237696acc295aa407ee5/library/std/src/panicking.rs:575:5
14: 0x7fbba2359d53 - core::panicking::panic_fmt::h598f9aca05f9965c
at /rustc/9c07efe84f28a44f3044237696acc295aa407ee5/library/core/src/panicking.rs:64:14
15: 0x7fbba235a14f - core::panicking::assert_failed_inner::h7bd2d237e3b3627a
16: 0x7fbba58449ac - core[4c48bf2e04a135c7]::panicking::assert_failed::<rustc_middle[46166420d424f8d9]::ty::Ty, rustc_middle[46166420d424f8d9]::ty::Ty>
17: 0x7fbba39fe9d4 - <rustc_hir_typeck[20dd85335634a743]::fn_ctxt::FnCtxt>::check_match::{closure#0}
18: 0x7fbba398e700 - <rustc_hir_typeck[20dd85335634a743]::fn_ctxt::FnCtxt>::check_expr_with_expectation_and_args
19: 0x7fbba39daa37 - <rustc_hir_typeck[20dd85335634a743]::fn_ctxt::FnCtxt>::check_block_with_expected
20: 0x7fbba398c51a - <rustc_hir_typeck[20dd85335634a743]::fn_ctxt::FnCtxt>::check_expr_with_expectation_and_args
21: 0x7fbba3b39e13 - <rustc_hir_typeck[20dd85335634a743]::fn_ctxt::FnCtxt>::check_return_expr
22: 0x7fbba3b31ba9 - rustc_hir_typeck[20dd85335634a743]::check::check_fn
23: 0x7fbba3b1cd99 - <rustc_hir_typeck[20dd85335634a743]::inherited::InheritedBuilder>::enter::<rustc_hir_typeck[20dd85335634a743]::typeck_with_fallback<rustc_hir_typeck[20dd85335634a743]::typeck::{closure#0}>::{closure#0}::{closure#1}, &rustc_middle[46166420d424f8d9]::ty::typeck_results::TypeckResults>
24: 0x7fbba3b0fd11 - rustc_hir_typeck[20dd85335634a743]::typeck
25: 0x7fbba3b1a1a4 - <rustc_query_system[b2d3787a6eb3f954]::dep_graph::graph::DepGraph<rustc_middle[46166420d424f8d9]::dep_graph::dep_node::DepKind>>::with_task::<rustc_middle[46166420d424f8d9]::ty::context::TyCtxt, rustc_span[b683b297262634fe]::def_id::LocalDefId, &rustc_middle[46166420d424f8d9]::ty::typeck_results::TypeckResults>
26: 0x7fbba3b0e5c1 - rustc_query_system[b2d3787a6eb3f954]::query::plumbing::try_execute_query::<rustc_query_impl[b1cf7b55e6424c26]::plumbing::QueryCtxt, rustc_query_system[b2d3787a6eb3f954]::query::caches::VecCache<rustc_span[b683b297262634fe]::def_id::LocalDefId, &rustc_middle[46166420d424f8d9]::ty::typeck_results::TypeckResults>>
27: 0x7fbba4fac55c - <rustc_query_impl[b1cf7b55e6424c26]::Queries as rustc_middle[46166420d424f8d9]::ty::query::QueryEngine>::typeck
28: 0x7fbba4036d7b - rustc_mir_build[acf460d81f0a9938]::thir::cx::thir_body
29: 0x7fbba4678cbc - <rustc_query_system[b2d3787a6eb3f954]::dep_graph::graph::DepGraph<rustc_middle[46166420d424f8d9]::dep_graph::dep_node::DepKind>>::with_task::<rustc_middle[46166420d424f8d9]::ty::context::TyCtxt, rustc_middle[46166420d424f8d9]::ty::WithOptConstParam<rustc_span[b683b297262634fe]::def_id::LocalDefId>, core[4c48bf2e04a135c7]::result::Result<(&rustc_data_structures[6865e20741ca8464]::steal::Steal<rustc_middle[46166420d424f8d9]::thir::Thir>, rustc_middle[46166420d424f8d9]::thir::ExprId), rustc_errors[6c86e693eff69e36]::ErrorGuaranteed>>
30: 0x7fbba4670686 - rustc_query_system[b2d3787a6eb3f954]::query::plumbing::try_execute_query::<rustc_query_impl[b1cf7b55e6424c26]::plumbing::QueryCtxt, rustc_query_system[b2d3787a6eb3f954]::query::caches::DefaultCache<rustc_middle[46166420d424f8d9]::ty::WithOptConstParam<rustc_span[b683b297262634fe]::def_id::LocalDefId>, core[4c48bf2e04a135c7]::result::Result<(&rustc_data_structures[6865e20741ca8464]::steal::Steal<rustc_middle[46166420d424f8d9]::thir::Thir>, rustc_middle[46166420d424f8d9]::thir::ExprId), rustc_errors[6c86e693eff69e36]::ErrorGuaranteed>>>
31: 0x7fbba46688fe - rustc_mir_build[acf460d81f0a9938]::build::mir_built
32: 0x7fbba3f59ceb - <rustc_query_system[b2d3787a6eb3f954]::dep_graph::graph::DepGraph<rustc_middle[46166420d424f8d9]::dep_graph::dep_node::DepKind>>::with_task::<rustc_middle[46166420d424f8d9]::ty::context::TyCtxt, rustc_middle[46166420d424f8d9]::ty::WithOptConstParam<rustc_span[b683b297262634fe]::def_id::LocalDefId>, &rustc_data_structures[6865e20741ca8464]::steal::Steal<rustc_middle[46166420d424f8d9]::mir::Body>>
33: 0x7fbba3f58641 - rustc_query_system[b2d3787a6eb3f954]::query::plumbing::try_execute_query::<rustc_query_impl[b1cf7b55e6424c26]::plumbing::QueryCtxt, rustc_query_system[b2d3787a6eb3f954]::query::caches::DefaultCache<rustc_middle[46166420d424f8d9]::ty::WithOptConstParam<rustc_span[b683b297262634fe]::def_id::LocalDefId>, &rustc_data_structures[6865e20741ca8464]::steal::Steal<rustc_middle[46166420d424f8d9]::mir::Body>>>
34: 0x7fbba3f63dba - rustc_mir_transform[b5e89e28eda50a52]::check_unsafety::unsafety_check_result
35: 0x7fbba4f97e55 - <rustc_mir_transform[b5e89e28eda50a52]::check_unsafety::provide::{closure#0} as core[4c48bf2e04a135c7]::ops::function::FnOnce<(rustc_middle[46166420d424f8d9]::ty::context::TyCtxt, rustc_span[b683b297262634fe]::def_id::LocalDefId)>>::call_once
36: 0x7fbba3f628a4 - <rustc_query_system[b2d3787a6eb3f954]::dep_graph::graph::DepGraph<rustc_middle[46166420d424f8d9]::dep_graph::dep_node::DepKind>>::with_task::<rustc_middle[46166420d424f8d9]::ty::context::TyCtxt, rustc_span[b683b297262634fe]::def_id::LocalDefId, &rustc_middle[46166420d424f8d9]::mir::query::UnsafetyCheckResult>
37: 0x7fbba3f5e3c8 - rustc_query_system[b2d3787a6eb3f954]::query::plumbing::try_execute_query::<rustc_query_impl[b1cf7b55e6424c26]::plumbing::QueryCtxt, rustc_query_system[b2d3787a6eb3f954]::query::caches::VecCache<rustc_span[b683b297262634fe]::def_id::LocalDefId, &rustc_middle[46166420d424f8d9]::mir::query::UnsafetyCheckResult>>
38: 0x7fbba3f5a794 - rustc_mir_transform[b5e89e28eda50a52]::mir_const
39: 0x7fbba3f59ceb - <rustc_query_system[b2d3787a6eb3f954]::dep_graph::graph::DepGraph<rustc_middle[46166420d424f8d9]::dep_graph::dep_node::DepKind>>::with_task::<rustc_middle[46166420d424f8d9]::ty::context::TyCtxt, rustc_middle[46166420d424f8d9]::ty::WithOptConstParam<rustc_span[b683b297262634fe]::def_id::LocalDefId>, &rustc_data_structures[6865e20741ca8464]::steal::Steal<rustc_middle[46166420d424f8d9]::mir::Body>>
40: 0x7fbba3f58641 - rustc_query_system[b2d3787a6eb3f954]::query::plumbing::try_execute_query::<rustc_query_impl[b1cf7b55e6424c26]::plumbing::QueryCtxt, rustc_query_system[b2d3787a6eb3f954]::query::caches::DefaultCache<rustc_middle[46166420d424f8d9]::ty::WithOptConstParam<rustc_span[b683b297262634fe]::def_id::LocalDefId>, &rustc_data_structures[6865e20741ca8464]::steal::Steal<rustc_middle[46166420d424f8d9]::mir::Body>>>
41: 0x7fbba4316694 - rustc_mir_transform[b5e89e28eda50a52]::mir_promoted
42: 0x7fbba431f73e - <rustc_query_system[b2d3787a6eb3f954]::dep_graph::graph::DepGraph<rustc_middle[46166420d424f8d9]::dep_graph::dep_node::DepKind>>::with_task::<rustc_middle[46166420d424f8d9]::ty::context::TyCtxt, rustc_middle[46166420d424f8d9]::ty::WithOptConstParam<rustc_span[b683b297262634fe]::def_id::LocalDefId>, (&rustc_data_structures[6865e20741ca8464]::steal::Steal<rustc_middle[46166420d424f8d9]::mir::Body>, &rustc_data_structures[6865e20741ca8464]::steal::Steal<rustc_index[20f50a9c5367227e]::vec::IndexVec<rustc_middle[46166420d424f8d9]::mir::Promoted, rustc_middle[46166420d424f8d9]::mir::Body>>)>
43: 0x7fbba43152dc - rustc_query_system[b2d3787a6eb3f954]::query::plumbing::try_execute_query::<rustc_query_impl[b1cf7b55e6424c26]::plumbing::QueryCtxt, rustc_query_system[b2d3787a6eb3f954]::query::caches::DefaultCache<rustc_middle[46166420d424f8d9]::ty::WithOptConstParam<rustc_span[b683b297262634fe]::def_id::LocalDefId>, (&rustc_data_structures[6865e20741ca8464]::steal::Steal<rustc_middle[46166420d424f8d9]::mir::Body>, &rustc_data_structures[6865e20741ca8464]::steal::Steal<rustc_index[20f50a9c5367227e]::vec::IndexVec<rustc_middle[46166420d424f8d9]::mir::Promoted, rustc_middle[46166420d424f8d9]::mir::Body>>)>>
44: 0x7fbba431348f - rustc_borrowck[22d2e0d41163e72]::mir_borrowck
45: 0x7fbba4312e65 - <rustc_borrowck[22d2e0d41163e72]::provide::{closure#0} as core[4c48bf2e04a135c7]::ops::function::FnOnce<(rustc_middle[46166420d424f8d9]::ty::context::TyCtxt, rustc_span[b683b297262634fe]::def_id::LocalDefId)>>::call_once
46: 0x7fbba45c8694 - <rustc_query_system[b2d3787a6eb3f954]::dep_graph::graph::DepGraph<rustc_middle[46166420d424f8d9]::dep_graph::dep_node::DepKind>>::with_task::<rustc_middle[46166420d424f8d9]::ty::context::TyCtxt, rustc_span[b683b297262634fe]::def_id::LocalDefId, &rustc_middle[46166420d424f8d9]::mir::query::BorrowCheckResult>
47: 0x7fbba45c745c - rustc_query_system[b2d3787a6eb3f954]::query::plumbing::try_execute_query::<rustc_query_impl[b1cf7b55e6424c26]::plumbing::QueryCtxt, rustc_query_system[b2d3787a6eb3f954]::query::caches::VecCache<rustc_span[b683b297262634fe]::def_id::LocalDefId, &rustc_middle[46166420d424f8d9]::mir::query::BorrowCheckResult>>
48: 0x7fbba4fac92a - <rustc_query_impl[b1cf7b55e6424c26]::Queries as rustc_middle[46166420d424f8d9]::ty::query::QueryEngine>::mir_borrowck
49: 0x7fbba4dffac9 - rustc_hir_analysis[5f00ccdad38bd90]::collect::type_of::type_of
50: 0x7fbba3eaf3a6 - <rustc_query_system[b2d3787a6eb3f954]::dep_graph::graph::DepGraph<rustc_middle[46166420d424f8d9]::dep_graph::dep_node::DepKind>>::with_task::<rustc_middle[46166420d424f8d9]::ty::context::TyCtxt, rustc_span[b683b297262634fe]::def_id::DefId, rustc_middle[46166420d424f8d9]::ty::Ty>
51: 0x7fbba3eacf4b - rustc_query_system[b2d3787a6eb3f954]::query::plumbing::get_query::<rustc_query_impl[b1cf7b55e6424c26]::queries::type_of, rustc_query_impl[b1cf7b55e6424c26]::plumbing::QueryCtxt>
52: 0x7fbba4741fad - rustc_hir_analysis[5f00ccdad38bd90]::check::check::check_mod_item_types
53: 0x7fbba415d1c4 - <rustc_query_system[b2d3787a6eb3f954]::dep_graph::graph::DepGraph<rustc_middle[46166420d424f8d9]::dep_graph::dep_node::DepKind>>::with_task::<rustc_middle[46166420d424f8d9]::ty::context::TyCtxt, rustc_span[b683b297262634fe]::def_id::LocalDefId, ()>
54: 0x7fbba415b35e - rustc_query_system[b2d3787a6eb3f954]::query::plumbing::try_execute_query::<rustc_query_impl[b1cf7b55e6424c26]::plumbing::QueryCtxt, rustc_query_system[b2d3787a6eb3f954]::query::caches::VecCache<rustc_span[b683b297262634fe]::def_id::LocalDefId, ()>>
55: 0x7fbba49df1a3 - rustc_query_system[b2d3787a6eb3f954]::query::plumbing::get_query::<rustc_query_impl[b1cf7b55e6424c26]::queries::check_mod_item_types, rustc_query_impl[b1cf7b55e6424c26]::plumbing::QueryCtxt>
56: 0x7fbba4c88315 - <rustc_middle[46166420d424f8d9]::hir::map::Map>::for_each_module::<rustc_hir_analysis[5f00ccdad38bd90]::check_crate::{closure#6}::{closure#0}>
57: 0x7fbba3b6aff2 - rustc_hir_analysis[5f00ccdad38bd90]::check_crate
58: 0x7fbba3b6ac3b - rustc_interface[3feed755d27e3616]::passes::analysis
59: 0x7fbba4dc1795 - <rustc_query_system[b2d3787a6eb3f954]::dep_graph::graph::DepGraph<rustc_middle[46166420d424f8d9]::dep_graph::dep_node::DepKind>>::with_task::<rustc_middle[46166420d424f8d9]::ty::context::TyCtxt, (), core[4c48bf2e04a135c7]::result::Result<(), rustc_errors[6c86e693eff69e36]::ErrorGuaranteed>>
60: 0x7fbba4dc0958 - rustc_query_system[b2d3787a6eb3f954]::query::plumbing::try_execute_query::<rustc_query_impl[b1cf7b55e6424c26]::plumbing::QueryCtxt, rustc_query_system[b2d3787a6eb3f954]::query::caches::DefaultCache<(), core[4c48bf2e04a135c7]::result::Result<(), rustc_errors[6c86e693eff69e36]::ErrorGuaranteed>>>
61: 0x7fbba4dc03c0 - rustc_query_system[b2d3787a6eb3f954]::query::plumbing::get_query::<rustc_query_impl[b1cf7b55e6424c26]::queries::analysis, rustc_query_impl[b1cf7b55e6424c26]::plumbing::QueryCtxt>
62: 0x7fbba48836c3 - <rustc_interface[3feed755d27e3616]::passes::QueryContext>::enter::<rustc_driver[8203396c4671b89c]::run_compiler::{closure#1}::{closure#2}::{closure#2}, core[4c48bf2e04a135c7]::result::Result<(), rustc_errors[6c86e693eff69e36]::ErrorGuaranteed>>
63: 0x7fbba487fa73 - <rustc_interface[3feed755d27e3616]::interface::Compiler>::enter::<rustc_driver[8203396c4671b89c]::run_compiler::{closure#1}::{closure#2}, core[4c48bf2e04a135c7]::result::Result<core[4c48bf2e04a135c7]::option::Option<rustc_interface[3feed755d27e3616]::queries::Linker>, rustc_errors[6c86e693eff69e36]::ErrorGuaranteed>>
64: 0x7fbba487aa88 - rustc_span[b683b297262634fe]::with_source_map::<core[4c48bf2e04a135c7]::result::Result<(), rustc_errors[6c86e693eff69e36]::ErrorGuaranteed>, rustc_interface[3feed755d27e3616]::interface::run_compiler<core[4c48bf2e04a135c7]::result::Result<(), rustc_errors[6c86e693eff69e36]::ErrorGuaranteed>, rustc_driver[8203396c4671b89c]::run_compiler::{closure#1}>::{closure#0}::{closure#0}>
65: 0x7fbba487a575 - <scoped_tls[b4ee55afb72dd1f]::ScopedKey<rustc_span[b683b297262634fe]::SessionGlobals>>::set::<rustc_interface[3feed755d27e3616]::interface::run_compiler<core[4c48bf2e04a135c7]::result::Result<(), rustc_errors[6c86e693eff69e36]::ErrorGuaranteed>, rustc_driver[8203396c4671b89c]::run_compiler::{closure#1}>::{closure#0}, core[4c48bf2e04a135c7]::result::Result<(), rustc_errors[6c86e693eff69e36]::ErrorGuaranteed>>
66: 0x7fbba4879b62 - std[fecc2c98d64c5e20]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[3feed755d27e3616]::util::run_in_thread_pool_with_globals<rustc_interface[3feed755d27e3616]::interface::run_compiler<core[4c48bf2e04a135c7]::result::Result<(), rustc_errors[6c86e693eff69e36]::ErrorGuaranteed>, rustc_driver[8203396c4671b89c]::run_compiler::{closure#1}>::{closure#0}, core[4c48bf2e04a135c7]::result::Result<(), rustc_errors[6c86e693eff69e36]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[4c48bf2e04a135c7]::result::Result<(), rustc_errors[6c86e693eff69e36]::ErrorGuaranteed>>
67: 0x7fbba4eba1fe - <<std[fecc2c98d64c5e20]::thread::Builder>::spawn_unchecked_<rustc_interface[3feed755d27e3616]::util::run_in_thread_pool_with_globals<rustc_interface[3feed755d27e3616]::interface::run_compiler<core[4c48bf2e04a135c7]::result::Result<(), rustc_errors[6c86e693eff69e36]::ErrorGuaranteed>, rustc_driver[8203396c4671b89c]::run_compiler::{closure#1}>::{closure#0}, core[4c48bf2e04a135c7]::result::Result<(), rustc_errors[6c86e693eff69e36]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[4c48bf2e04a135c7]::result::Result<(), rustc_errors[6c86e693eff69e36]::ErrorGuaranteed>>::{closure#1} as core[4c48bf2e04a135c7]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
68: 0x7fbba63da923 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::ha40757527af5f65d
at /rustc/9c07efe84f28a44f3044237696acc295aa407ee5/library/alloc/src/boxed.rs:2000:9
69: 0x7fbba63da923 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hf5bd55cd4ab92745
at /rustc/9c07efe84f28a44f3044237696acc295aa407ee5/library/alloc/src/boxed.rs:2000:9
70: 0x7fbba63da923 - std::sys::unix::thread::Thread::new::thread_start::h087de3b4a94ba02b
at /rustc/9c07efe84f28a44f3044237696acc295aa407ee5/library/std/src/sys/unix/thread.rs:108:17
71: 0x7fbba21bf609 - start_thread
at /build/glibc-SzIz7B/glibc-2.31/nptl/pthread_create.c:477:8
72: 0x7fbba20e2133 - clone
at /build/glibc-SzIz7B/glibc-2.31/misc/../sysdeps/unix/sysv/linux/x86_64/clone.S:95
73: 0x0 - <unknown>
error: internal compiler error: no errors encountered even though `delay_span_bug` issued
error: internal compiler error: VecMap([(OpaqueTypeKey { def_id: DefId(0:29 ~ trait_error_test[6898]::Greeter::test_func::{opaque#0}), substs: [Self] }, OpaqueTypeDecl { hidden_type: OpaqueHiddenType { span: src/main.rs:35:40: 35:67 (#6), ty: _ }, origin: FnReturn(DefId(0:25 ~ trait_error_test[6898]::Greeter::test_func)) })])
|
= note: delayed at compiler/rustc_infer/src/infer/opaque_types/table.rs:50:26
thread 'rustc' panicked at 'Box<dyn Any>', compiler/rustc_errors/src/lib.rs:1610:13
stack backtrace:
0: 0x7fbba63d0d5a - std::backtrace_rs::backtrace::libunwind::trace::hf3e23dba944728e7
at /rustc/9c07efe84f28a44f3044237696acc295aa407ee5/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5
1: 0x7fbba63d0d5a - std::backtrace_rs::backtrace::trace_unsynchronized::ha7a661dbe14f9bec
at /rustc/9c07efe84f28a44f3044237696acc295aa407ee5/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
2: 0x7fbba63d0d5a - std::sys_common::backtrace::_print_fmt::h8bb3e793399a1d31
at /rustc/9c07efe84f28a44f3044237696acc295aa407ee5/library/std/src/sys_common/backtrace.rs:65:5
3: 0x7fbba63d0d5a - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h8f001b4156af7ff0
at /rustc/9c07efe84f28a44f3044237696acc295aa407ee5/library/std/src/sys_common/backtrace.rs:44:22
4: 0x7fbba235d36e - core::fmt::write::h98c67bacb0ad9cb8
at /rustc/9c07efe84f28a44f3044237696acc295aa407ee5/library/core/src/fmt/mod.rs:1208:17
5: 0x7fbba63c4e35 - std::io::Write::write_fmt::h21d43ee83b8bf3da
at /rustc/9c07efe84f28a44f3044237696acc295aa407ee5/library/std/src/io/mod.rs:1682:15
6: 0x7fbba63d0b25 - std::sys_common::backtrace::_print::hed3e659c4722fff2
at /rustc/9c07efe84f28a44f3044237696acc295aa407ee5/library/std/src/sys_common/backtrace.rs:47:5
7: 0x7fbba63d0b25 - std::sys_common::backtrace::print::hf3af686623d05885
at /rustc/9c07efe84f28a44f3044237696acc295aa407ee5/library/std/src/sys_common/backtrace.rs:34:9
8: 0x7fbba63d2eaf - std::panicking::default_hook::{{closure}}::hfbc532e2813a4fd8
at /rustc/9c07efe84f28a44f3044237696acc295aa407ee5/library/std/src/panicking.rs:267:22
9: 0x7fbba63d2beb - std::panicking::default_hook::hf22d9a6bedeb8cbb
at /rustc/9c07efe84f28a44f3044237696acc295aa407ee5/library/std/src/panicking.rs:286:9
10: 0x7fbba55fc351 - rustc_driver[8203396c4671b89c]::DEFAULT_HOOK::{closure#0}::{closure#0}
11: 0x7fbba63d36ad - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h839d8563a5defb2f
at /rustc/9c07efe84f28a44f3044237696acc295aa407ee5/library/alloc/src/boxed.rs:2032:9
12: 0x7fbba63d36ad - std::panicking::rust_panic_with_hook::h2e7c62506c5adf89
at /rustc/9c07efe84f28a44f3044237696acc295aa407ee5/library/std/src/panicking.rs:692:13
13: 0x7fbba56354d1 - std[fecc2c98d64c5e20]::panicking::begin_panic::<rustc_errors[6c86e693eff69e36]::ExplicitBug>::{closure#0}
14: 0x7fbba5633da6 - std[fecc2c98d64c5e20]::sys_common::backtrace::__rust_end_short_backtrace::<std[fecc2c98d64c5e20]::panicking::begin_panic<rustc_errors[6c86e693eff69e36]::ExplicitBug>::{closure#0}, !>
15: 0x7fbba5612d66 - std[fecc2c98d64c5e20]::panicking::begin_panic::<rustc_errors[6c86e693eff69e36]::ExplicitBug>
16: 0x7fbba5631806 - std[fecc2c98d64c5e20]::panic::panic_any::<rustc_errors[6c86e693eff69e36]::ExplicitBug>
17: 0x7fbba4aea906 - <rustc_errors[6c86e693eff69e36]::HandlerInner>::flush_delayed::<alloc[4e38580f0181725e]::vec::Vec<rustc_errors[6c86e693eff69e36]::diagnostic::Diagnostic>, &str>
18: 0x7fbba4ae9c0b - <rustc_errors[6c86e693eff69e36]::HandlerInner as core[4c48bf2e04a135c7]::ops::drop::Drop>::drop
19: 0x7fbba488b9de - core[4c48bf2e04a135c7]::ptr::drop_in_place::<rustc_session[23982924e285e106]::parse::ParseSess>
20: 0x7fbba487be3f - core[4c48bf2e04a135c7]::ptr::drop_in_place::<rustc_session[23982924e285e106]::session::Session>
21: 0x7fbba487bb70 - core[4c48bf2e04a135c7]::ptr::drop_in_place::<rustc_interface[3feed755d27e3616]::interface::Compiler>
22: 0x7fbba487af48 - rustc_span[b683b297262634fe]::with_source_map::<core[4c48bf2e04a135c7]::result::Result<(), rustc_errors[6c86e693eff69e36]::ErrorGuaranteed>, rustc_interface[3feed755d27e3616]::interface::run_compiler<core[4c48bf2e04a135c7]::result::Result<(), rustc_errors[6c86e693eff69e36]::ErrorGuaranteed>, rustc_driver[8203396c4671b89c]::run_compiler::{closure#1}>::{closure#0}::{closure#0}>
23: 0x7fbba487a575 - <scoped_tls[b4ee55afb72dd1f]::ScopedKey<rustc_span[b683b297262634fe]::SessionGlobals>>::set::<rustc_interface[3feed755d27e3616]::interface::run_compiler<core[4c48bf2e04a135c7]::result::Result<(), rustc_errors[6c86e693eff69e36]::ErrorGuaranteed>, rustc_driver[8203396c4671b89c]::run_compiler::{closure#1}>::{closure#0}, core[4c48bf2e04a135c7]::result::Result<(), rustc_errors[6c86e693eff69e36]::ErrorGuaranteed>>
24: 0x7fbba4879b62 - std[fecc2c98d64c5e20]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[3feed755d27e3616]::util::run_in_thread_pool_with_globals<rustc_interface[3feed755d27e3616]::interface::run_compiler<core[4c48bf2e04a135c7]::result::Result<(), rustc_errors[6c86e693eff69e36]::ErrorGuaranteed>, rustc_driver[8203396c4671b89c]::run_compiler::{closure#1}>::{closure#0}, core[4c48bf2e04a135c7]::result::Result<(), rustc_errors[6c86e693eff69e36]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[4c48bf2e04a135c7]::result::Result<(), rustc_errors[6c86e693eff69e36]::ErrorGuaranteed>>
25: 0x7fbba4eba1fe - <<std[fecc2c98d64c5e20]::thread::Builder>::spawn_unchecked_<rustc_interface[3feed755d27e3616]::util::run_in_thread_pool_with_globals<rustc_interface[3feed755d27e3616]::interface::run_compiler<core[4c48bf2e04a135c7]::result::Result<(), rustc_errors[6c86e693eff69e36]::ErrorGuaranteed>, rustc_driver[8203396c4671b89c]::run_compiler::{closure#1}>::{closure#0}, core[4c48bf2e04a135c7]::result::Result<(), rustc_errors[6c86e693eff69e36]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[4c48bf2e04a135c7]::result::Result<(), rustc_errors[6c86e693eff69e36]::ErrorGuaranteed>>::{closure#1} as core[4c48bf2e04a135c7]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
26: 0x7fbba63da923 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::ha40757527af5f65d
at /rustc/9c07efe84f28a44f3044237696acc295aa407ee5/library/alloc/src/boxed.rs:2000:9
27: 0x7fbba63da923 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hf5bd55cd4ab92745
at /rustc/9c07efe84f28a44f3044237696acc295aa407ee5/library/alloc/src/boxed.rs:2000:9
28: 0x7fbba63da923 - std::sys::unix::thread::Thread::new::thread_start::h087de3b4a94ba02b
at /rustc/9c07efe84f28a44f3044237696acc295aa407ee5/library/std/src/sys/unix/thread.rs:108:17
29: 0x7fbba21bf609 - start_thread
at /build/glibc-SzIz7B/glibc-2.31/nptl/pthread_create.c:477:8
30: 0x7fbba20e2133 - clone
at /build/glibc-SzIz7B/glibc-2.31/misc/../sysdeps/unix/sysv/linux/x86_64/clone.S:95
31: 0x0 - <unknown>
note: the compiler unexpectedly panicked. this is a bug.
note: we would appreciate a bug report: https://github.com/rust-lang/rust/issues/new?labels=C-bug%2C+I-ICE%2C+T-compiler&template=ice.md
note: rustc 1.68.0-nightly (9c07efe84 2022-12-16) running on x86_64-unknown-linux-gnu
note: compiler flags: --crate-type bin -C embed-bitcode=no -C debuginfo=2 -C incremental=[REDACTED]
note: some of the compiler flags provided by cargo are hidden
query stack during panic:
end of query stack
thread '<unnamed>' panicked at 'panic in a function that cannot unwind', library/core/src/panicking.rs:87:58
stack backtrace:
0: 0x7fbba22fa85a - std::backtrace_rs::backtrace::libunwind::trace::hf3e23dba944728e7
at /rustc/9c07efe84f28a44f3044237696acc295aa407ee5/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5
1: 0x7fbba22fa85a - std::backtrace_rs::backtrace::trace_unsynchronized::ha7a661dbe14f9bec
at /rustc/9c07efe84f28a44f3044237696acc295aa407ee5/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
2: 0x7fbba22fa85a - std::sys_common::backtrace::_print_fmt::h8bb3e793399a1d31
at /rustc/9c07efe84f28a44f3044237696acc295aa407ee5/library/std/src/sys_common/backtrace.rs:65:5
3: 0x7fbba22fa85a - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h8f001b4156af7ff0
at /rustc/9c07efe84f28a44f3044237696acc295aa407ee5/library/std/src/sys_common/backtrace.rs:44:22
4: 0x7fbba235d36e - core::fmt::write::h98c67bacb0ad9cb8
at /rustc/9c07efe84f28a44f3044237696acc295aa407ee5/library/core/src/fmt/mod.rs:1208:17
5: 0x7fbba22eabd5 - std::io::Write::write_fmt::h21d43ee83b8bf3da
at /rustc/9c07efe84f28a44f3044237696acc295aa407ee5/library/std/src/io/mod.rs:1682:15
6: 0x7fbba22fa625 - std::sys_common::backtrace::_print::hed3e659c4722fff2
at /rustc/9c07efe84f28a44f3044237696acc295aa407ee5/library/std/src/sys_common/backtrace.rs:47:5
7: 0x7fbba22fa625 - std::sys_common::backtrace::print::hf3af686623d05885
at /rustc/9c07efe84f28a44f3044237696acc295aa407ee5/library/std/src/sys_common/backtrace.rs:34:9
8: 0x7fbba22fd36f - std::panicking::default_hook::{{closure}}::hfbc532e2813a4fd8
at /rustc/9c07efe84f28a44f3044237696acc295aa407ee5/library/std/src/panicking.rs:267:22
9: 0x7fbba22fd0ab - std::panicking::default_hook::hf22d9a6bedeb8cbb
at /rustc/9c07efe84f28a44f3044237696acc295aa407ee5/library/std/src/panicking.rs:286:9
10: 0x7fbba22fdb8c - std::panicking::rust_panic_with_hook::h2e7c62506c5adf89
at /rustc/9c07efe84f28a44f3044237696acc295aa407ee5/library/std/src/panicking.rs:688:13
11: 0x7fbba22fd8e2 - std::panicking::begin_panic_handler::{{closure}}::h691824ad0687f3c2
at /rustc/9c07efe84f28a44f3044237696acc295aa407ee5/library/std/src/panicking.rs:577:13
12: 0x7fbba22fad0c - std::sys_common::backtrace::__rust_end_short_backtrace::hc3ca2684c4e495b8
at /rustc/9c07efe84f28a44f3044237696acc295aa407ee5/library/std/src/sys_common/backtrace.rs:137:18
13: 0x7fbba22fd632 - rust_begin_unwind
at /rustc/9c07efe84f28a44f3044237696acc295aa407ee5/library/std/src/panicking.rs:575:5
14: 0x7fbba2359dd3 - core::panicking::panic_str_nounwind::h91e5861b6e8788e7
at /rustc/9c07efe84f28a44f3044237696acc295aa407ee5/library/core/src/panicking.rs:90:14
15: 0x7fbba2359f43 - core::panicking::panic_no_unwind::hdb3a83216b242b46
at /rustc/9c07efe84f28a44f3044237696acc295aa407ee5/library/core/src/panicking.rs:159:5
16: 0x7fbba487af5f - rustc_span[b683b297262634fe]::with_source_map::<core[4c48bf2e04a135c7]::result::Result<(), rustc_errors[6c86e693eff69e36]::ErrorGuaranteed>, rustc_interface[3feed755d27e3616]::interface::run_compiler<core[4c48bf2e04a135c7]::result::Result<(), rustc_errors[6c86e693eff69e36]::ErrorGuaranteed>, rustc_driver[8203396c4671b89c]::run_compiler::{closure#1}>::{closure#0}::{closure#0}>
17: 0x7fbba487a575 - <scoped_tls[b4ee55afb72dd1f]::ScopedKey<rustc_span[b683b297262634fe]::SessionGlobals>>::set::<rustc_interface[3feed755d27e3616]::interface::run_compiler<core[4c48bf2e04a135c7]::result::Result<(), rustc_errors[6c86e693eff69e36]::ErrorGuaranteed>, rustc_driver[8203396c4671b89c]::run_compiler::{closure#1}>::{closure#0}, core[4c48bf2e04a135c7]::result::Result<(), rustc_errors[6c86e693eff69e36]::ErrorGuaranteed>>
18: 0x7fbba4879b62 - std[fecc2c98d64c5e20]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[3feed755d27e3616]::util::run_in_thread_pool_with_globals<rustc_interface[3feed755d27e3616]::interface::run_compiler<core[4c48bf2e04a135c7]::result::Result<(), rustc_errors[6c86e693eff69e36]::ErrorGuaranteed>, rustc_driver[8203396c4671b89c]::run_compiler::{closure#1}>::{closure#0}, core[4c48bf2e04a135c7]::result::Result<(), rustc_errors[6c86e693eff69e36]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[4c48bf2e04a135c7]::result::Result<(), rustc_errors[6c86e693eff69e36]::ErrorGuaranteed>>
19: 0x7fbba4eba1fe - <<std[fecc2c98d64c5e20]::thread::Builder>::spawn_unchecked_<rustc_interface[3feed755d27e3616]::util::run_in_thread_pool_with_globals<rustc_interface[3feed755d27e3616]::interface::run_compiler<core[4c48bf2e04a135c7]::result::Result<(), rustc_errors[6c86e693eff69e36]::ErrorGuaranteed>, rustc_driver[8203396c4671b89c]::run_compiler::{closure#1}>::{closure#0}, core[4c48bf2e04a135c7]::result::Result<(), rustc_errors[6c86e693eff69e36]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[4c48bf2e04a135c7]::result::Result<(), rustc_errors[6c86e693eff69e36]::ErrorGuaranteed>>::{closure#1} as core[4c48bf2e04a135c7]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
20: 0x7fbba63da923 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::ha40757527af5f65d
at /rustc/9c07efe84f28a44f3044237696acc295aa407ee5/library/alloc/src/boxed.rs:2000:9
21: 0x7fbba63da923 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hf5bd55cd4ab92745
at /rustc/9c07efe84f28a44f3044237696acc295aa407ee5/library/alloc/src/boxed.rs:2000:9
22: 0x7fbba63da923 - std::sys::unix::thread::Thread::new::thread_start::h087de3b4a94ba02b
at /rustc/9c07efe84f28a44f3044237696acc295aa407ee5/library/std/src/sys/unix/thread.rs:108:17
23: 0x7fbba21bf609 - start_thread
at /build/glibc-SzIz7B/glibc-2.31/nptl/pthread_create.c:477:8
24: 0x7fbba20e2133 - clone
at /build/glibc-SzIz7B/glibc-2.31/misc/../sysdeps/unix/sysv/linux/x86_64/clone.S:95
25: 0x0 - <unknown>
thread panicked while panicking. aborting.
warning: `trait-error-test` (bin "trait-error-test") generated 1 warning
error: could not compile `trait-error-test`; 1 warning emitted
Caused by:
process didn't exit successfully: `rustc --crate-name trait_error_test --edition=2021 src/main.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type bin --emit=dep-info,link -C embed-bitcode=no -C debuginfo=2 -C metadata=7c90f596de056739 -C extra-filename=-7c90f596de056739 --out-dir /home/lemon/Data/trait-error-test/target/debug/deps -C incremental=/home/lemon/Data/trait-error-test/target/debug/incremental -L dependency=/home/lemon/Data/trait-error-test/target/debug/deps` (signal: 6, SIGABRT: process abort signal)