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debug ice: suggestion must not have overlapping parts , suggests -> Box<dyn> #112434

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matthiaskrgr opened this issue Jun 8, 2023 · 1 comment · Fixed by #112513
Closed

debug ice: suggestion must not have overlapping parts , suggests -> Box<dyn> #112434

matthiaskrgr opened this issue Jun 8, 2023 · 1 comment · Fixed by #112513
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@compiler-errors
Labels
A-suggestion-diagnostics Area: Suggestions generated by the compiler applied by `cargo fix` C-bug Category: This is a bug. D-invalid-suggestion Diagnostics: A structured suggestion resulting in incorrect code. F-type_alias_impl_trait `#[feature(type_alias_impl_trait)]` I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.

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@matthiaskrgr
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Code

type Foo = impl std::fmt::Debug;

fn boo2(arg: bool) -> Foo {
    if arg {
        "boo2"
    } else {
    }
}

Meta

rustc --version --verbose:

b2b34bd83192c3d16c88655158f7d8d612513e88

Error output

error[E0658]: `impl Trait` in type aliases is unstable
 --> treereduce.out:1:12
  |
1 | type Foo = impl std::fmt::Debug;
  |            ^^^^^^^^^^^^^^^^^^^^
  |
  = note: see issue #63063 <https://github.com/rust-lang/rust/issues/63063> for more information
  = help: add `#![feature(type_alias_impl_trait)]` to the crate attributes to enable

error[E0601]: `main` function not found in crate `treereduce`
 --> treereduce.out:8:2
  |
8 | }
  |  ^ consider adding a `main` function to `treereduce.out`

error[E0308]: `if` and `else` have incompatible types
 --> treereduce.out:6:12
  |
4 |       if arg {
  |       ------ `if` and `else` have incompatible types
5 |           "boo2"
  |           ------ expected because of this
6 |       } else {
  |  ____________^
7 | |     }
  | |_____^ expected `&str`, found `()`
  |
help: you could change the return type to be a boxed trait object
  |
3 | fn boo2(arg: bool) -> Box<dyn> {
  |                       ~~~+~~~
help: if you change the return type to expect trait objects, box the returned expressions
  |
5 ~         Box::new("boo2")
6 ~     } else Box::new({
7 ~     })
  |

The -> Box<dyn> and

} else Box::new({})

suggestions are quite interesting :D
I suspect the first one causes the debug ice

Backtrace 

thread 'rustc' panicked at 'assertion failed: `(left == right)`
  left: `Some([SubstitutionPart { span: treereduce.out:3:23: 3:27 (#0), snippet: "Box<dyn" }, SubstitutionPart { span: treereduce.out:3:26: 3:26 (#0), snippet: ">" }])`,
 right: `None`: suggestion must not have overlapping parts', /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_errors/src/diagnostic.rs:628:9
stack backtrace:
   0:     0x7f30d0cf1156 - trace
                               at /home/matthias/vcs/github/rust_debug_assertions/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5
   1:     0x7f30d0cf1156 - trace_unsynchronized<std::sys_common::backtrace::_print_fmt::{closure_env#1}>
                               at /home/matthias/vcs/github/rust_debug_assertions/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
   2:     0x7f30d0cf1156 - _print_fmt
                               at /home/matthias/vcs/github/rust_debug_assertions/library/std/src/sys_common/backtrace.rs:65:5
   3:     0x7f30d0cf1156 - fmt
                               at /home/matthias/vcs/github/rust_debug_assertions/library/std/src/sys_common/backtrace.rs:44:22
   4:     0x7f30d0d3d9f8 - fmt
                               at /home/matthias/vcs/github/rust_debug_assertions/library/core/src/fmt/rt.rs:138:9
   5:     0x7f30d0d3d9f8 - write
                               at /home/matthias/vcs/github/rust_debug_assertions/library/core/src/fmt/mod.rs:1094:21
   6:     0x7f30d0caafbf - write_fmt<std::sys::unix::stdio::Stderr>
                               at /home/matthias/vcs/github/rust_debug_assertions/library/std/src/io/mod.rs:1713:15
   7:     0x7f30d0cf0f55 - _print
                               at /home/matthias/vcs/github/rust_debug_assertions/library/std/src/sys_common/backtrace.rs:47:5
   8:     0x7f30d0cf0f55 - print
                               at /home/matthias/vcs/github/rust_debug_assertions/library/std/src/sys_common/backtrace.rs:34:9
   9:     0x7f30d0cca06c - {closure#1}
  10:     0x7f30d0cc9d42 - default_hook
                               at /home/matthias/vcs/github/rust_debug_assertions/library/std/src/panicking.rs:288:9
  11:     0x7f30d267954b - call<(&core::panic::panic_info::PanicInfo), (dyn core::ops::function::Fn<(&core::panic::panic_info::PanicInfo), Output=()> + core::marker::Send + core::marker::Sync), alloc::alloc::Global>
                               at /home/matthias/vcs/github/rust_debug_assertions/library/alloc/src/boxed.rs:1999:9
  12:     0x7f30d267954b - {closure#0}
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_driver_impl/src/lib.rs:1269:13
  13:     0x7f30d0cca855 - call<(&core::panic::panic_info::PanicInfo), (dyn core::ops::function::Fn<(&core::panic::panic_info::PanicInfo), Output=()> + core::marker::Send + core::marker::Sync), alloc::alloc::Global>
                               at /home/matthias/vcs/github/rust_debug_assertions/library/alloc/src/boxed.rs:1999:9
  14:     0x7f30d0cca855 - rust_panic_with_hook
                               at /home/matthias/vcs/github/rust_debug_assertions/library/std/src/panicking.rs:709:13
  15:     0x7f30d0cf1467 - {closure#0}
                               at /home/matthias/vcs/github/rust_debug_assertions/library/std/src/panicking.rs:597:13
  16:     0x7f30d0cf1236 - __rust_end_short_backtrace<std::panicking::begin_panic_handler::{closure_env#0}, !>
                               at /home/matthias/vcs/github/rust_debug_assertions/library/std/src/sys_common/backtrace.rs:151:18
  17:     0x7f30d0cca3c2 - begin_panic_handler
                               at /home/matthias/vcs/github/rust_debug_assertions/library/std/src/panicking.rs:593:5
  18:     0x7f30d0c7e133 - panic_fmt
                               at /home/matthias/vcs/github/rust_debug_assertions/library/core/src/panicking.rs:67:14
  19:     0x7f30d0c7e6ab - assert_failed_inner
  20:     0x7f30d1606b29 - core[b962eb8751e8bda6]::panicking::assert_failed::<core[b962eb8751e8bda6]::option::Option<&[rustc_errors[4e6218b432e9a694]::SubstitutionPart; 2usize]>, core[b962eb8751e8bda6]::option::Option<&[rustc_errors[4e6218b432e9a694]::SubstitutionPart; 2usize]>>
                               at /home/matthias/vcs/github/rust_debug_assertions/library/core/src/panicking.rs:228:5
  21:     0x7f30d30e8e51 - multipart_suggestion_with_style<rustc_error_messages::SubdiagnosticMessage>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_errors/src/diagnostic.rs:628:9
  22:     0x7f30d30bcdc5 - add_to_diagnostic_with<rustc_errors::diagnostic::AddToDiagnostic::add_to_diagnostic::{closure_env#0}<rustc_infer::errors::SuggestBoxingForReturnImplTrait>>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_infer/src/errors/mod.rs:1301:10
  23:     0x7f30d3094a63 - add_to_diagnostic<rustc_infer::errors::SuggestBoxingForReturnImplTrait>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_errors/src/diagnostic.rs:79:9
  24:     0x7f30d3094a63 - subdiagnostic<rustc_infer::errors::SuggestBoxingForReturnImplTrait>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_errors/src/diagnostic.rs:900:23
  25:     0x7f30d3094a63 - suggest_boxing_for_return_impl_trait<core::array::iter::IntoIter<rustc_span::span_encoding::Span, 2>>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_infer/src/infer/error_reporting/suggest.rs:87:13
  26:     0x7f30d3094a63 - note_error_origin
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_infer/src/infer/error_reporting/mod.rs:851:21
  27:     0x7f30d3094a63 - note_type_err
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_infer/src/infer/error_reporting/mod.rs:1935:9
  28:     0x7f30d30836bb - report_and_explain_type_error
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_infer/src/infer/error_reporting/mod.rs:2085:9
  29:     0x7f30d2ebb0b6 - report_mismatched_types
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_infer/src/infer/mod.rs:1653:9
  30:     0x7f30d2ebb0b6 - coerce_inner<&rustc_hir::hir::Expr>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_hir_typeck/src/coercion.rs:1621:31
  31:     0x7f30d2ca9640 - coerce<&rustc_hir::hir::Expr>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_hir_typeck/src/coercion.rs:1409:9
  32:     0x7f30d2ca9640 - check_then_else
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_hir_typeck/src/expr.rs:1019:20
  33:     0x7f30d2ca9640 - check_expr_kind
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_hir_typeck/src/expr.rs:347:17
  34:     0x7f30d2c27a05 - {closure#0}
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_hir_typeck/src/expr.rs:240:18
  35:     0x7f30d2c27a05 - maybe_grow<rustc_middle::ty::Ty, rustc_hir_typeck::expr::{impl#0}::check_expr_with_expectation_and_args::{closure_env#0}>
                               at /home/matthias/.cargo/registry/src/index.crates.io-6f17d22bba15001f/stacker-0.1.15/src/lib.rs:55:9
  36:     0x7f30d2c27a05 - ensure_sufficient_stack<rustc_middle::ty::Ty, rustc_hir_typeck::expr::{impl#0}::check_expr_with_expectation_and_args::{closure_env#0}>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_data_structures/src/stack.rs:17:5
  37:     0x7f30d2c27a05 - check_expr_with_expectation_and_args
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_hir_typeck/src/expr.rs:236:18
  38:     0x7f30d2ca5353 - check_expr_with_expectation
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_hir_typeck/src/expr.rs:190:9
  39:     0x7f30d2c566ae - {closure#0}
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_hir_typeck/src/fn_ctxt/checks.rs:1549:44
  40:     0x7f30d2c566ae - map<&rustc_hir::hir::Expr, (&rustc_hir::hir::Expr, rustc_middle::ty::Ty), rustc_hir_typeck::fn_ctxt::checks::{impl#0}::check_block_with_expected::{closure#0}::{closure_env#0}>
                               at /home/matthias/vcs/github/rust_debug_assertions/library/core/src/option.rs:1075:29
  41:     0x7f30d2c566ae - {closure#0}
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_hir_typeck/src/fn_ctxt/checks.rs:1549:26
  42:     0x7f30d2c566ae - with_breakable_ctxt<rustc_hir_typeck::fn_ctxt::checks::{impl#0}::check_block_with_expected::{closure_env#0}, ()>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_hir_typeck/src/fn_ctxt/_impl.rs:1523:22
  43:     0x7f30d2c566ae - check_block_with_expected
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_hir_typeck/src/fn_ctxt/checks.rs:1541:26
  44:     0x7f30d2ca6782 - check_expr_kind
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_hir_typeck/src/expr.rs:335:41
  45:     0x7f30d2c27a05 - {closure#0}
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_hir_typeck/src/expr.rs:240:18
  46:     0x7f30d2c27a05 - maybe_grow<rustc_middle::ty::Ty, rustc_hir_typeck::expr::{impl#0}::check_expr_with_expectation_and_args::{closure_env#0}>
                               at /home/matthias/.cargo/registry/src/index.crates.io-6f17d22bba15001f/stacker-0.1.15/src/lib.rs:55:9
  47:     0x7f30d2c27a05 - ensure_sufficient_stack<rustc_middle::ty::Ty, rustc_hir_typeck::expr::{impl#0}::check_expr_with_expectation_and_args::{closure_env#0}>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_data_structures/src/stack.rs:17:5
  48:     0x7f30d2c27a05 - check_expr_with_expectation_and_args
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_hir_typeck/src/expr.rs:236:18
  49:     0x7f30d2ca5353 - check_expr_with_expectation
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_hir_typeck/src/expr.rs:190:9
  50:     0x7f30d2c297af - check_expr_with_hint
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_hir_typeck/src/expr.rs:142:9
  51:     0x7f30d2c297af - check_return_expr
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_hir_typeck/src/expr.rs:830:30
  52:     0x7f30d2e4551d - check_fn
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_hir_typeck/src/check.rs:120:5
  53:     0x7f30d2d314a4 - {closure#0}<rustc_hir_typeck::typeck::{closure_env#0}>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_hir_typeck/src/lib.rs:215:9
  54:     0x7f30d2d314a4 - typeck_with_fallback<rustc_hir_typeck::typeck::{closure_env#0}>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_hir_typeck/src/lib.rs:175:36
  55:     0x7f30d2d314a4 - typeck
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_hir_typeck/src/lib.rs:157:5
  56:     0x7f30d42e85bc - {closure#0}
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_query_impl/src/plumbing.rs:577:33
  57:     0x7f30d42e85bc - __rust_begin_short_backtrace<rustc_query_impl::query_impl::typeck::dynamic_query::{closure#2}::{closure_env#0}, rustc_middle::query::erase::Erased<[u8; 8]>>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_query_impl/src/plumbing.rs:506:18
  58:     0x7f30d42af4dc - {closure#2}
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_query_impl/src/plumbing.rs:574:25
  59:     0x7f30d42af4dc - call_once<rustc_query_impl::query_impl::typeck::dynamic_query::{closure_env#2}, (rustc_middle::ty::context::TyCtxt, rustc_span::def_id::LocalDefId)>
                               at /home/matthias/vcs/github/rust_debug_assertions/library/core/src/ops/function.rs:250:5
  60:     0x7f30d41086c6 - compute<rustc_query_system::query::caches::VecCache<rustc_span::def_id::LocalDefId, rustc_middle::query::erase::Erased<[u8; 8]>>, false, false, false>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_query_impl/src/lib.rs:116:9
  61:     0x7f30d41086c6 - {closure#0}<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::VecCache<rustc_span::def_id::LocalDefId, rustc_middle::query::erase::Erased<[u8; 8]>>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_query_system/src/query/plumbing.rs:480:72
  62:     0x7f30d41086c6 - {closure#0}<rustc_query_system::query::plumbing::execute_job_non_incr::{closure_env#0}<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::VecCache<rustc_span::def_id::LocalDefId, rustc_middle::query::erase::Erased<[u8; 8]>>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt>, rustc_middle::query::erase::Erased<[u8; 8]>>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_middle/src/ty/context/tls.rs:82:9
  63:     0x7f30d41086c6 - try_with<core::cell::Cell<*const ()>, rustc_middle::ty::context::tls::enter_context::{closure_env#0}<rustc_query_system::query::plumbing::execute_job_non_incr::{closure_env#0}<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::VecCache<rustc_span::def_id::LocalDefId, rustc_middle::query::erase::Erased<[u8; 8]>>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt>, rustc_middle::query::erase::Erased<[u8; 8]>>, rustc_middle::query::erase::Erased<[u8; 8]>>
                               at /home/matthias/vcs/github/rust_debug_assertions/library/std/src/thread/local.rs:270:16
  64:     0x7f30d41086c6 - with<core::cell::Cell<*const ()>, rustc_middle::ty::context::tls::enter_context::{closure_env#0}<rustc_query_system::query::plumbing::execute_job_non_incr::{closure_env#0}<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::VecCache<rustc_span::def_id::LocalDefId, rustc_middle::query::erase::Erased<[u8; 8]>>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt>, rustc_middle::query::erase::Erased<[u8; 8]>>, rustc_middle::query::erase::Erased<[u8; 8]>>
                               at /home/matthias/vcs/github/rust_debug_assertions/library/std/src/thread/local.rs:246:9
  65:     0x7f30d41086c6 - enter_context<rustc_query_system::query::plumbing::execute_job_non_incr::{closure_env#0}<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::VecCache<rustc_span::def_id::LocalDefId, rustc_middle::query::erase::Erased<[u8; 8]>>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt>, rustc_middle::query::erase::Erased<[u8; 8]>>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_middle/src/ty/context/tls.rs:79:9
  66:     0x7f30d41086c6 - {closure#0}<rustc_middle::query::erase::Erased<[u8; 8]>, rustc_query_system::query::plumbing::execute_job_non_incr::{closure_env#0}<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::VecCache<rustc_span::def_id::LocalDefId, rustc_middle::query::erase::Erased<[u8; 8]>>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt>>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_query_impl/src/plumbing.rs:149:13
  67:     0x7f30d41086c6 - {closure#0}<rustc_query_impl::plumbing::{impl#3}::start_query::{closure_env#0}<rustc_middle::query::erase::Erased<[u8; 8]>, rustc_query_system::query::plumbing::execute_job_non_incr::{closure_env#0}<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::VecCache<rustc_span::def_id::LocalDefId, rustc_middle::query::erase::Erased<[u8; 8]>>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt>>, rustc_middle::query::erase::Erased<[u8; 8]>>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_middle/src/ty/context/tls.rs:133:9
  68:     0x7f30d41086c6 - {closure#0}<rustc_middle::ty::context::tls::with_related_context::{closure_env#0}<rustc_query_impl::plumbing::{impl#3}::start_query::{closure_env#0}<rustc_middle::query::erase::Erased<[u8; 8]>, rustc_query_system::query::plumbing::execute_job_non_incr::{closure_env#0}<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::VecCache<rustc_span::def_id::LocalDefId, rustc_middle::query::erase::Erased<[u8; 8]>>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt>>, rustc_middle::query::erase::Erased<[u8; 8]>>, rustc_middle::query::erase::Erased<[u8; 8]>>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_middle/src/ty/context/tls.rs:111:36
  69:     0x7f30d41086c6 - with_context_opt<rustc_middle::ty::context::tls::with_context::{closure_env#0}<rustc_middle::ty::context::tls::with_related_context::{closure_env#0}<rustc_query_impl::plumbing::{impl#3}::start_query::{closure_env#0}<rustc_middle::query::erase::Erased<[u8; 8]>, rustc_query_system::query::plumbing::execute_job_non_incr::{closure_env#0}<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::VecCache<rustc_span::def_id::LocalDefId, rustc_middle::query::erase::Erased<[u8; 8]>>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt>>, rustc_middle::query::erase::Erased<[u8; 8]>>, rustc_middle::query::erase::Erased<[u8; 8]>>, rustc_middle::query::erase::Erased<[u8; 8]>>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_middle/src/ty/context/tls.rs:100:18
  70:     0x7f30d41086c6 - with_context<rustc_middle::ty::context::tls::with_related_context::{closure_env#0}<rustc_query_impl::plumbing::{impl#3}::start_query::{closure_env#0}<rustc_middle::query::erase::Erased<[u8; 8]>, rustc_query_system::query::plumbing::execute_job_non_incr::{closure_env#0}<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::VecCache<rustc_span::def_id::LocalDefId, rustc_middle::query::erase::Erased<[u8; 8]>>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt>>, rustc_middle::query::erase::Erased<[u8; 8]>>, rustc_middle::query::erase::Erased<[u8; 8]>>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_middle/src/ty/context/tls.rs:111:5
  71:     0x7f30d41086c6 - with_related_context<rustc_query_impl::plumbing::{impl#3}::start_query::{closure_env#0}<rustc_middle::query::erase::Erased<[u8; 8]>, rustc_query_system::query::plumbing::execute_job_non_incr::{closure_env#0}<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::VecCache<rustc_span::def_id::LocalDefId, rustc_middle::query::erase::Erased<[u8; 8]>>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt>>, rustc_middle::query::erase::Erased<[u8; 8]>>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_middle/src/ty/context/tls.rs:124:5
  72:     0x7f30d41086c6 - start_query<rustc_middle::query::erase::Erased<[u8; 8]>, rustc_query_system::query::plumbing::execute_job_non_incr::{closure_env#0}<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::VecCache<rustc_span::def_id::LocalDefId, rustc_middle::query::erase::Erased<[u8; 8]>>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt>>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_query_impl/src/plumbing.rs:134:9
  73:     0x7f30d41086c6 - execute_job_non_incr<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::VecCache<rustc_span::def_id::LocalDefId, rustc_middle::query::erase::Erased<[u8; 8]>>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_query_system/src/query/plumbing.rs:480:18
  74:     0x7f30d41086c6 - execute_job<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::VecCache<rustc_span::def_id::LocalDefId, rustc_middle::query::erase::Erased<[u8; 8]>>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt, false>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_query_system/src/query/plumbing.rs:413:9
  75:     0x7f30d41086c6 - try_execute_query<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::VecCache<rustc_span::def_id::LocalDefId, rustc_middle::query::erase::Erased<[u8; 8]>>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt, false>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_query_system/src/query/plumbing.rs:358:13
  76:     0x7f30d41ae2f6 - {closure#0}<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::VecCache<rustc_span::def_id::LocalDefId, rustc_middle::query::erase::Erased<[u8; 8]>>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_query_system/src/query/plumbing.rs:810:32
  77:     0x7f30d41ae2f6 - maybe_grow<rustc_middle::query::erase::Erased<[u8; 8]>, rustc_query_system::query::plumbing::get_query_non_incr::{closure_env#0}<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::VecCache<rustc_span::def_id::LocalDefId, rustc_middle::query::erase::Erased<[u8; 8]>>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt>>
                               at /home/matthias/.cargo/registry/src/index.crates.io-6f17d22bba15001f/stacker-0.1.15/src/lib.rs:55:9
  78:     0x7f30d41ae2f6 - ensure_sufficient_stack<rustc_middle::query::erase::Erased<[u8; 8]>, rustc_query_system::query::plumbing::get_query_non_incr::{closure_env#0}<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::VecCache<rustc_span::def_id::LocalDefId, rustc_middle::query::erase::Erased<[u8; 8]>>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt>>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_data_structures/src/stack.rs:17:5
  79:     0x7f30d41ae2f6 - get_query_non_incr<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::VecCache<rustc_span::def_id::LocalDefId, rustc_middle::query::erase::Erased<[u8; 8]>>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_query_system/src/query/plumbing.rs:810:5
  80:     0x7f30d41ae2f6 - __rust_end_short_backtrace
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_query_impl/src/plumbing.rs:554:26
  81:     0x7f30d296dfa0 - query_get_at<rustc_query_system::query::caches::VecCache<rustc_span::def_id::LocalDefId, rustc_middle::query::erase::Erased<[u8; 8]>>>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_middle/src/query/plumbing.rs:155:17
  82:     0x7f30d29979f7 - typeck<rustc_span::def_id::LocalDefId>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_middle/src/query/mod.rs:2179:1
  83:     0x7f30d29979f7 - typeck<rustc_span::def_id::LocalDefId>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_middle/src/query/plumbing.rs:376:35
  84:     0x7f30d29979f7 - check
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_hir_analysis/src/collect/type_of/opaque.rs:129:31
  85:     0x7f30d2992bb5 - visit_item
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_hir_analysis/src/collect/type_of/opaque.rs:190:13
  86:     0x7f30d2996c0a - visit_nested_item<rustc_hir_analysis::collect::type_of::opaque::TaitConstraintLocator>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_hir/src/intravisit.rs:239:13
  87:     0x7f30d2996c0a - walk_mod<rustc_hir_analysis::collect::type_of::opaque::TaitConstraintLocator>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_hir/src/intravisit.rs:564:9
  88:     0x7f30d2996c0a - visit_mod<rustc_hir_analysis::collect::type_of::opaque::TaitConstraintLocator>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_hir/src/intravisit.rs:309:9
  89:     0x7f30d2996c0a - walk_toplevel_module<rustc_hir_analysis::collect::type_of::opaque::TaitConstraintLocator>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_middle/src/hir/map/mod.rs:550:9
  90:     0x7f30d2996c0a - find_opaque_ty_constraints_for_tait
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_hir_analysis/src/collect/type_of/opaque.rs:38:9
  91:     0x7f30d2bce98d - type_of
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_hir_analysis/src/collect/type_of.rs:424:23
  92:     0x7f30d42e85fe - {closure#0}
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_query_impl/src/plumbing.rs:577:33
  93:     0x7f30d42e85fe - __rust_begin_short_backtrace<rustc_query_impl::query_impl::type_of::dynamic_query::{closure#2}::{closure_env#0}, rustc_middle::query::erase::Erased<[u8; 8]>>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_query_impl/src/plumbing.rs:506:18
  94:     0x7f30d42afb70 - {closure#2}
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_query_impl/src/plumbing.rs:574:25
  95:     0x7f30d42afb70 - call_once<rustc_query_impl::query_impl::type_of::dynamic_query::{closure_env#2}, (rustc_middle::ty::context::TyCtxt, rustc_span::def_id::DefId)>
                               at /home/matthias/vcs/github/rust_debug_assertions/library/core/src/ops/function.rs:250:5
  96:     0x7f30d40c6a75 - compute<rustc_query_system::query::caches::DefaultCache<rustc_span::def_id::DefId, rustc_middle::query::erase::Erased<[u8; 8]>>, false, false, false>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_query_impl/src/lib.rs:116:9
  97:     0x7f30d40c6a75 - {closure#0}<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::DefaultCache<rustc_span::def_id::DefId, rustc_middle::query::erase::Erased<[u8; 8]>>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_query_system/src/query/plumbing.rs:480:72
  98:     0x7f30d40c6a75 - {closure#0}<rustc_query_system::query::plumbing::execute_job_non_incr::{closure_env#0}<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::DefaultCache<rustc_span::def_id::DefId, rustc_middle::query::erase::Erased<[u8; 8]>>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt>, rustc_middle::query::erase::Erased<[u8; 8]>>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_middle/src/ty/context/tls.rs:82:9
  99:     0x7f30d40c6a75 - try_with<core::cell::Cell<*const ()>, rustc_middle::ty::context::tls::enter_context::{closure_env#0}<rustc_query_system::query::plumbing::execute_job_non_incr::{closure_env#0}<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::DefaultCache<rustc_span::def_id::DefId, rustc_middle::query::erase::Erased<[u8; 8]>>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt>, rustc_middle::query::erase::Erased<[u8; 8]>>, rustc_middle::query::erase::Erased<[u8; 8]>>
                               at /home/matthias/vcs/github/rust_debug_assertions/library/std/src/thread/local.rs:270:16
 100:     0x7f30d40c6a75 - with<core::cell::Cell<*const ()>, rustc_middle::ty::context::tls::enter_context::{closure_env#0}<rustc_query_system::query::plumbing::execute_job_non_incr::{closure_env#0}<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::DefaultCache<rustc_span::def_id::DefId, rustc_middle::query::erase::Erased<[u8; 8]>>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt>, rustc_middle::query::erase::Erased<[u8; 8]>>, rustc_middle::query::erase::Erased<[u8; 8]>>
                               at /home/matthias/vcs/github/rust_debug_assertions/library/std/src/thread/local.rs:246:9
 101:     0x7f30d40c6a75 - enter_context<rustc_query_system::query::plumbing::execute_job_non_incr::{closure_env#0}<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::DefaultCache<rustc_span::def_id::DefId, rustc_middle::query::erase::Erased<[u8; 8]>>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt>, rustc_middle::query::erase::Erased<[u8; 8]>>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_middle/src/ty/context/tls.rs:79:9
 102:     0x7f30d40c6a75 - {closure#0}<rustc_middle::query::erase::Erased<[u8; 8]>, rustc_query_system::query::plumbing::execute_job_non_incr::{closure_env#0}<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::DefaultCache<rustc_span::def_id::DefId, rustc_middle::query::erase::Erased<[u8; 8]>>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt>>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_query_impl/src/plumbing.rs:149:13
 103:     0x7f30d40c6a75 - {closure#0}<rustc_query_impl::plumbing::{impl#3}::start_query::{closure_env#0}<rustc_middle::query::erase::Erased<[u8; 8]>, rustc_query_system::query::plumbing::execute_job_non_incr::{closure_env#0}<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::DefaultCache<rustc_span::def_id::DefId, rustc_middle::query::erase::Erased<[u8; 8]>>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt>>, rustc_middle::query::erase::Erased<[u8; 8]>>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_middle/src/ty/context/tls.rs:133:9
 104:     0x7f30d40c6a75 - {closure#0}<rustc_middle::ty::context::tls::with_related_context::{closure_env#0}<rustc_query_impl::plumbing::{impl#3}::start_query::{closure_env#0}<rustc_middle::query::erase::Erased<[u8; 8]>, rustc_query_system::query::plumbing::execute_job_non_incr::{closure_env#0}<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::DefaultCache<rustc_span::def_id::DefId, rustc_middle::query::erase::Erased<[u8; 8]>>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt>>, rustc_middle::query::erase::Erased<[u8; 8]>>, rustc_middle::query::erase::Erased<[u8; 8]>>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_middle/src/ty/context/tls.rs:111:36
 105:     0x7f30d40c6a75 - with_context_opt<rustc_middle::ty::context::tls::with_context::{closure_env#0}<rustc_middle::ty::context::tls::with_related_context::{closure_env#0}<rustc_query_impl::plumbing::{impl#3}::start_query::{closure_env#0}<rustc_middle::query::erase::Erased<[u8; 8]>, rustc_query_system::query::plumbing::execute_job_non_incr::{closure_env#0}<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::DefaultCache<rustc_span::def_id::DefId, rustc_middle::query::erase::Erased<[u8; 8]>>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt>>, rustc_middle::query::erase::Erased<[u8; 8]>>, rustc_middle::query::erase::Erased<[u8; 8]>>, rustc_middle::query::erase::Erased<[u8; 8]>>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_middle/src/ty/context/tls.rs:100:18
 106:     0x7f30d40c6a75 - with_context<rustc_middle::ty::context::tls::with_related_context::{closure_env#0}<rustc_query_impl::plumbing::{impl#3}::start_query::{closure_env#0}<rustc_middle::query::erase::Erased<[u8; 8]>, rustc_query_system::query::plumbing::execute_job_non_incr::{closure_env#0}<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::DefaultCache<rustc_span::def_id::DefId, rustc_middle::query::erase::Erased<[u8; 8]>>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt>>, rustc_middle::query::erase::Erased<[u8; 8]>>, rustc_middle::query::erase::Erased<[u8; 8]>>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_middle/src/ty/context/tls.rs:111:5
 107:     0x7f30d40c6a75 - with_related_context<rustc_query_impl::plumbing::{impl#3}::start_query::{closure_env#0}<rustc_middle::query::erase::Erased<[u8; 8]>, rustc_query_system::query::plumbing::execute_job_non_incr::{closure_env#0}<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::DefaultCache<rustc_span::def_id::DefId, rustc_middle::query::erase::Erased<[u8; 8]>>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt>>, rustc_middle::query::erase::Erased<[u8; 8]>>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_middle/src/ty/context/tls.rs:124:5
 108:     0x7f30d40c6a75 - start_query<rustc_middle::query::erase::Erased<[u8; 8]>, rustc_query_system::query::plumbing::execute_job_non_incr::{closure_env#0}<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::DefaultCache<rustc_span::def_id::DefId, rustc_middle::query::erase::Erased<[u8; 8]>>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt>>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_query_impl/src/plumbing.rs:134:9
 109:     0x7f30d40c6a75 - execute_job_non_incr<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::DefaultCache<rustc_span::def_id::DefId, rustc_middle::query::erase::Erased<[u8; 8]>>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_query_system/src/query/plumbing.rs:480:18
 110:     0x7f30d40c6a75 - execute_job<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::DefaultCache<rustc_span::def_id::DefId, rustc_middle::query::erase::Erased<[u8; 8]>>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt, false>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_query_system/src/query/plumbing.rs:413:9
 111:     0x7f30d40c6a75 - try_execute_query<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::DefaultCache<rustc_span::def_id::DefId, rustc_middle::query::erase::Erased<[u8; 8]>>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt, false>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_query_system/src/query/plumbing.rs:358:13
 112:     0x7f30d41a4d1a - {closure#0}<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::DefaultCache<rustc_span::def_id::DefId, rustc_middle::query::erase::Erased<[u8; 8]>>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_query_system/src/query/plumbing.rs:810:32
 113:     0x7f30d41a4d1a - maybe_grow<rustc_middle::query::erase::Erased<[u8; 8]>, rustc_query_system::query::plumbing::get_query_non_incr::{closure_env#0}<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::DefaultCache<rustc_span::def_id::DefId, rustc_middle::query::erase::Erased<[u8; 8]>>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt>>
                               at /home/matthias/.cargo/registry/src/index.crates.io-6f17d22bba15001f/stacker-0.1.15/src/lib.rs:55:9
 114:     0x7f30d41a4d1a - ensure_sufficient_stack<rustc_middle::query::erase::Erased<[u8; 8]>, rustc_query_system::query::plumbing::get_query_non_incr::{closure_env#0}<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::DefaultCache<rustc_span::def_id::DefId, rustc_middle::query::erase::Erased<[u8; 8]>>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt>>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_data_structures/src/stack.rs:17:5
 115:     0x7f30d41a4d1a - get_query_non_incr<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::DefaultCache<rustc_span::def_id::DefId, rustc_middle::query::erase::Erased<[u8; 8]>>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_query_system/src/query/plumbing.rs:810:5
 116:     0x7f30d41a4d1a - __rust_end_short_backtrace
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_query_impl/src/plumbing.rs:554:26
 117:     0x7f30d296de5d - query_get_at<rustc_query_system::query::caches::DefaultCache<rustc_span::def_id::DefId, rustc_middle::query::erase::Erased<[u8; 8]>>>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_middle/src/query/plumbing.rs:155:17
 118:     0x7f30d2977458 - type_of<rustc_span::def_id::LocalDefId>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_middle/src/query/mod.rs:2179:1
 119:     0x7f30d2977458 - type_of<rustc_span::def_id::LocalDefId>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_middle/src/query/plumbing.rs:376:35
 120:     0x7f30d2977458 - check_opaque
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_hir_analysis/src/check/check.rs:221:12
 121:     0x7f30d297beaa - check_item_type
 122:     0x7f30d2984fec - check_mod_item_types
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_hir_analysis/src/check/check.rs:1384:9
 123:     0x7f30d42e674c - {closure#0}
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_query_impl/src/plumbing.rs:577:33
 124:     0x7f30d42e674c - __rust_begin_short_backtrace<rustc_query_impl::query_impl::check_mod_item_types::dynamic_query::{closure#2}::{closure_env#0}, rustc_middle::query::erase::Erased<[u8; 0]>>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_query_impl/src/plumbing.rs:506:18
 125:     0x7f30d4329b6c - {closure#2}
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_query_impl/src/plumbing.rs:574:25
 126:     0x7f30d4329b6c - call_once<rustc_query_impl::query_impl::check_mod_item_types::dynamic_query::{closure_env#2}, (rustc_middle::ty::context::TyCtxt, rustc_span::def_id::LocalDefId)>
                               at /home/matthias/vcs/github/rust_debug_assertions/library/core/src/ops/function.rs:250:5
 127:     0x7f30d40fdfda - compute<rustc_query_system::query::caches::VecCache<rustc_span::def_id::LocalDefId, rustc_middle::query::erase::Erased<[u8; 0]>>, false, false, false>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_query_impl/src/lib.rs:116:9
 128:     0x7f30d40fdfda - {closure#0}<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::VecCache<rustc_span::def_id::LocalDefId, rustc_middle::query::erase::Erased<[u8; 0]>>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_query_system/src/query/plumbing.rs:480:72
 129:     0x7f30d40fdfda - {closure#0}<rustc_query_system::query::plumbing::execute_job_non_incr::{closure_env#0}<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::VecCache<rustc_span::def_id::LocalDefId, rustc_middle::query::erase::Erased<[u8; 0]>>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt>, rustc_middle::query::erase::Erased<[u8; 0]>>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_middle/src/ty/context/tls.rs:82:9
 130:     0x7f30d40fdfda - try_with<core::cell::Cell<*const ()>, rustc_middle::ty::context::tls::enter_context::{closure_env#0}<rustc_query_system::query::plumbing::execute_job_non_incr::{closure_env#0}<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::VecCache<rustc_span::def_id::LocalDefId, rustc_middle::query::erase::Erased<[u8; 0]>>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt>, rustc_middle::query::erase::Erased<[u8; 0]>>, rustc_middle::query::erase::Erased<[u8; 0]>>
                               at /home/matthias/vcs/github/rust_debug_assertions/library/std/src/thread/local.rs:270:16
 131:     0x7f30d40fdfda - with<core::cell::Cell<*const ()>, rustc_middle::ty::context::tls::enter_context::{closure_env#0}<rustc_query_system::query::plumbing::execute_job_non_incr::{closure_env#0}<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::VecCache<rustc_span::def_id::LocalDefId, rustc_middle::query::erase::Erased<[u8; 0]>>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt>, rustc_middle::query::erase::Erased<[u8; 0]>>, rustc_middle::query::erase::Erased<[u8; 0]>>
                               at /home/matthias/vcs/github/rust_debug_assertions/library/std/src/thread/local.rs:246:9
 132:     0x7f30d40fdfda - enter_context<rustc_query_system::query::plumbing::execute_job_non_incr::{closure_env#0}<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::VecCache<rustc_span::def_id::LocalDefId, rustc_middle::query::erase::Erased<[u8; 0]>>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt>, rustc_middle::query::erase::Erased<[u8; 0]>>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_middle/src/ty/context/tls.rs:79:9
 133:     0x7f30d40fdfda - {closure#0}<rustc_middle::query::erase::Erased<[u8; 0]>, rustc_query_system::query::plumbing::execute_job_non_incr::{closure_env#0}<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::VecCache<rustc_span::def_id::LocalDefId, rustc_middle::query::erase::Erased<[u8; 0]>>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt>>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_query_impl/src/plumbing.rs:149:13
 134:     0x7f30d40fdfda - {closure#0}<rustc_query_impl::plumbing::{impl#3}::start_query::{closure_env#0}<rustc_middle::query::erase::Erased<[u8; 0]>, rustc_query_system::query::plumbing::execute_job_non_incr::{closure_env#0}<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::VecCache<rustc_span::def_id::LocalDefId, rustc_middle::query::erase::Erased<[u8; 0]>>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt>>, rustc_middle::query::erase::Erased<[u8; 0]>>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_middle/src/ty/context/tls.rs:133:9
 135:     0x7f30d40fdfda - {closure#0}<rustc_middle::ty::context::tls::with_related_context::{closure_env#0}<rustc_query_impl::plumbing::{impl#3}::start_query::{closure_env#0}<rustc_middle::query::erase::Erased<[u8; 0]>, rustc_query_system::query::plumbing::execute_job_non_incr::{closure_env#0}<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::VecCache<rustc_span::def_id::LocalDefId, rustc_middle::query::erase::Erased<[u8; 0]>>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt>>, rustc_middle::query::erase::Erased<[u8; 0]>>, rustc_middle::query::erase::Erased<[u8; 0]>>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_middle/src/ty/context/tls.rs:111:36
 136:     0x7f30d40fdfda - with_context_opt<rustc_middle::ty::context::tls::with_context::{closure_env#0}<rustc_middle::ty::context::tls::with_related_context::{closure_env#0}<rustc_query_impl::plumbing::{impl#3}::start_query::{closure_env#0}<rustc_middle::query::erase::Erased<[u8; 0]>, rustc_query_system::query::plumbing::execute_job_non_incr::{closure_env#0}<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::VecCache<rustc_span::def_id::LocalDefId, rustc_middle::query::erase::Erased<[u8; 0]>>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt>>, rustc_middle::query::erase::Erased<[u8; 0]>>, rustc_middle::query::erase::Erased<[u8; 0]>>, rustc_middle::query::erase::Erased<[u8; 0]>>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_middle/src/ty/context/tls.rs:100:18
 137:     0x7f30d40fdfda - with_context<rustc_middle::ty::context::tls::with_related_context::{closure_env#0}<rustc_query_impl::plumbing::{impl#3}::start_query::{closure_env#0}<rustc_middle::query::erase::Erased<[u8; 0]>, rustc_query_system::query::plumbing::execute_job_non_incr::{closure_env#0}<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::VecCache<rustc_span::def_id::LocalDefId, rustc_middle::query::erase::Erased<[u8; 0]>>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt>>, rustc_middle::query::erase::Erased<[u8; 0]>>, rustc_middle::query::erase::Erased<[u8; 0]>>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_middle/src/ty/context/tls.rs:111:5
 138:     0x7f30d40fdfda - with_related_context<rustc_query_impl::plumbing::{impl#3}::start_query::{closure_env#0}<rustc_middle::query::erase::Erased<[u8; 0]>, rustc_query_system::query::plumbing::execute_job_non_incr::{closure_env#0}<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::VecCache<rustc_span::def_id::LocalDefId, rustc_middle::query::erase::Erased<[u8; 0]>>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt>>, rustc_middle::query::erase::Erased<[u8; 0]>>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_middle/src/ty/context/tls.rs:124:5
 139:     0x7f30d40fdfda - start_query<rustc_middle::query::erase::Erased<[u8; 0]>, rustc_query_system::query::plumbing::execute_job_non_incr::{closure_env#0}<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::VecCache<rustc_span::def_id::LocalDefId, rustc_middle::query::erase::Erased<[u8; 0]>>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt>>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_query_impl/src/plumbing.rs:134:9
 140:     0x7f30d40fdfda - execute_job_non_incr<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::VecCache<rustc_span::def_id::LocalDefId, rustc_middle::query::erase::Erased<[u8; 0]>>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_query_system/src/query/plumbing.rs:480:18
 141:     0x7f30d40fdfda - execute_job<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::VecCache<rustc_span::def_id::LocalDefId, rustc_middle::query::erase::Erased<[u8; 0]>>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt, false>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_query_system/src/query/plumbing.rs:413:9
 142:     0x7f30d40fdfda - try_execute_query<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::VecCache<rustc_span::def_id::LocalDefId, rustc_middle::query::erase::Erased<[u8; 0]>>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt, false>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_query_system/src/query/plumbing.rs:358:13
 143:     0x7f30d41ad4bc - {closure#0}<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::VecCache<rustc_span::def_id::LocalDefId, rustc_middle::query::erase::Erased<[u8; 0]>>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_query_system/src/query/plumbing.rs:810:32
 144:     0x7f30d41ad4bc - maybe_grow<rustc_middle::query::erase::Erased<[u8; 0]>, rustc_query_system::query::plumbing::get_query_non_incr::{closure_env#0}<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::VecCache<rustc_span::def_id::LocalDefId, rustc_middle::query::erase::Erased<[u8; 0]>>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt>>
                               at /home/matthias/.cargo/registry/src/index.crates.io-6f17d22bba15001f/stacker-0.1.15/src/lib.rs:55:9
 145:     0x7f30d41ad4bc - ensure_sufficient_stack<rustc_middle::query::erase::Erased<[u8; 0]>, rustc_query_system::query::plumbing::get_query_non_incr::{closure_env#0}<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::VecCache<rustc_span::def_id::LocalDefId, rustc_middle::query::erase::Erased<[u8; 0]>>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt>>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_data_structures/src/stack.rs:17:5
 146:     0x7f30d41ad4bc - get_query_non_incr<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::VecCache<rustc_span::def_id::LocalDefId, rustc_middle::query::erase::Erased<[u8; 0]>>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_query_system/src/query/plumbing.rs:810:5
 147:     0x7f30d41ad4bc - __rust_end_short_backtrace
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_query_impl/src/plumbing.rs:554:26
 148:     0x7f30d2966c44 - query_ensure<rustc_query_system::query::caches::VecCache<rustc_span::def_id::LocalDefId, rustc_middle::query::erase::Erased<[u8; 0]>>>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_middle/src/query/plumbing.rs:171:9
 149:     0x7f30d2966c44 - check_mod_item_types<rustc_span::def_id::LocalDefId>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_middle/src/query/mod.rs:2179:1
 150:     0x7f30d2966c44 - {closure#0}
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_hir_analysis/src/lib.rs:496:57
 151:     0x7f30d2966c44 - for_each_module<rustc_hir_analysis::check_crate::{closure#6}::{closure_env#0}>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_middle/src/hir/map/mod.rs:628:13
 152:     0x7f30d2ab36b9 - {closure#6}
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_hir_analysis/src/lib.rs:496:9
 153:     0x7f30d2ab36b9 - run<(), rustc_hir_analysis::check_crate::{closure_env#6}>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_data_structures/src/profiling.rs:752:9
 154:     0x7f30d2ab36b9 - time<(), rustc_hir_analysis::check_crate::{closure_env#6}>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_session/src/utils.rs:11:50
 155:     0x7f30d2ab36b9 - check_crate
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_hir_analysis/src/lib.rs:495:5
 156:     0x7f30d317008c - analysis
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_interface/src/passes.rs:768:5
 157:     0x7f30d42e860a - {closure#0}
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_query_impl/src/plumbing.rs:577:33
 158:     0x7f30d42e860a - __rust_begin_short_backtrace<rustc_query_impl::query_impl::analysis::dynamic_query::{closure#2}::{closure_env#0}, rustc_middle::query::erase::Erased<[u8; 1]>>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_query_impl/src/plumbing.rs:506:18
 159:     0x7f30d436b928 - {closure#2}
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_query_impl/src/plumbing.rs:574:25
 160:     0x7f30d436b928 - call_once<rustc_query_impl::query_impl::analysis::dynamic_query::{closure_env#2}, (rustc_middle::ty::context::TyCtxt, ())>
                               at /home/matthias/vcs/github/rust_debug_assertions/library/core/src/ops/function.rs:250:5
 161:     0x7f30d4079ef9 - compute<rustc_query_system::query::caches::SingleCache<rustc_middle::query::erase::Erased<[u8; 1]>>, false, false, false>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_query_impl/src/lib.rs:116:9
 162:     0x7f30d4079ef9 - {closure#0}<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::SingleCache<rustc_middle::query::erase::Erased<[u8; 1]>>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_query_system/src/query/plumbing.rs:480:72
 163:     0x7f30d4079ef9 - {closure#0}<rustc_query_system::query::plumbing::execute_job_non_incr::{closure_env#0}<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::SingleCache<rustc_middle::query::erase::Erased<[u8; 1]>>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt>, rustc_middle::query::erase::Erased<[u8; 1]>>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_middle/src/ty/context/tls.rs:82:9

@matthiaskrgr matthiaskrgr added I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. C-bug Category: This is a bug. A-suggestion-diagnostics Area: Suggestions generated by the compiler applied by `cargo fix` F-type_alias_impl_trait `#[feature(type_alias_impl_trait)]` D-invalid-suggestion Diagnostics: A structured suggestion resulting in incorrect code. labels Jun 8, 2023
@chenyukang chenyukang assigned chenyukang and unassigned chenyukang Jun 10, 2023
@chenyukang
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For anyone interested in this issue, the panic comes from this line:

rust/compiler/rustc_infer/src/infer/error_reporting/suggest.rs

Line 84 in 43062c4

start_sp: return_sp.with_hi(return_sp.lo() + BytePos(4)),

the BytePos(4) is used for replace impl, while here we don't have it.

And further, it seems we should not suggest Box::new({}) here, we may need more limits for the function suggest_boxing_for_return_impl_trait to avoid it.

@compiler-errors compiler-errors mentioned this issue Jun 11, 2023
Merged
@compiler-errors compiler-errors self-assigned this Jun 11, 2023
@bors bors closed this as completed in d9ae718 Jun 11, 2023
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A-suggestion-diagnostics Area: Suggestions generated by the compiler applied by `cargo fix` C-bug Category: This is a bug. D-invalid-suggestion Diagnostics: A structured suggestion resulting in incorrect code. F-type_alias_impl_trait `#[feature(type_alias_impl_trait)]` I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
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Dont compute opt_suggest_box_span span for TAIT compiler-errors/rust
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@chenyukang @matthiaskrgr @compiler-errors