[ICE]: `env_canonicalizer.sub_root_lookup_table.is_empty()`

[matthiaskrgr]

auto-reduced (treereduce-rust):

//@compile-flags: --edition=2024 -Znext-solver=globally
trait Access {
    fn list() -> impl Future<Output = <&[fn()] as ::core::ops::Deref>::Target> {
        async { todo!() }
    }
}

original:

use std::future::Future;

trait Access {
    type Lister;

    fn list() -> impl Future<Output = <&[fn()] as ::core::ops::Deref>::Target> {
        async { todo!() }
    }
}

trait Foo {}

impl Access for dyn Foo {
    type Lister = ();
}

fn main() {
    let svc = async {
        async { <dyn Foo>::list() }.await;
    };
    &svc as &dyn Service;
}

struct Wrap<T>(T);
impl<T: Send> UnaryService for Wrap<T> {}

impl<T> Service for T
where
    T: Send,
{
    fn call(&self) {
        Wrap::<T>::call2();
    }
}

trait Service {
    fn call(&self);
}

trait UnaryService {
    fn call2() {}
}

trait Unimplemented {}
impl<T> UnaryService for T where T: Unimplemented {}

Version information

rustc 1.95.0-nightly (5c49c4f7c 2026-01-20)
binary: rustc
commit-hash: 5c49c4f7c8393c861b849441d27f5d40e0f1e33b
commit-date: 2026-01-20
host: x86_64-unknown-linux-gnu
release: 1.95.0-nightly
LLVM version: 21.1.8

Possibly related line of code:

rust/compiler/rustc_next_trait_solver/src/canonical/canonicalizer.rs

Lines 173 to 185 in 5c49c4f

	sub_root_lookup_table: Default::default(),
	var_kinds: Vec::new(),
	cache: Default::default(),
	};
	let param_env = param_env.fold_with(&mut env_canonicalizer);
	debug_assert!(env_canonicalizer.sub_root_lookup_table.is_empty());
	(
	param_env,
	env_canonicalizer.variables,
	env_canonicalizer.var_kinds,
	env_canonicalizer.variable_lookup_table,
	)

Command:
/home/matthias/.rustup/toolchains/alt-master/bin/rustc --edition=2024 -Znext-solver=globally

Program output

error[E0106]: missing lifetime specifier
 --> /tmp/icemaker_global_tempdir.KggS0GxnKvFp/rustc_testrunner_tmpdir_reporting.saw5gUYmc12I/mvce.rs:2:40
  |
2 |     fn list() -> impl Future<Output = <&[fn()] as ::core::ops::Deref>::Target> {
  |                                        ^ expected named lifetime parameter
  |
  = help: this function's return type contains a borrowed value, but there is no value for it to be borrowed from
help: consider using the `'static` lifetime, but this is uncommon unless you're returning a borrowed value from a `const` or a `static`
  |
2 |     fn list() -> impl Future<Output = <&'static [fn()] as ::core::ops::Deref>::Target> {
  |                                         +++++++
help: instead, you are more likely to want to return an owned value
  |
2 -     fn list() -> impl Future<Output = <&[fn()] as ::core::ops::Deref>::Target> {
2 +     fn list() -> impl Future<Output = <Vec<fn()> as ::core::ops::Deref>::Target> {
  |

error[E0601]: `main` function not found in crate `mvce`
 --> /tmp/icemaker_global_tempdir.KggS0GxnKvFp/rustc_testrunner_tmpdir_reporting.saw5gUYmc12I/mvce.rs:5:2
  |
5 | }
  |  ^ consider adding a `main` function to `/tmp/icemaker_global_tempdir.KggS0GxnKvFp/rustc_testrunner_tmpdir_reporting.saw5gUYmc12I/mvce.rs`


thread 'rustc' (1597190) panicked at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_next_trait_solver/src/canonical/canonicalizer.rs:179:13:
assertion failed: env_canonicalizer.sub_root_lookup_table.is_empty()
stack backtrace:
   0:     0x7f6a1bcf5780 - std[259ffe842b18a3d2]::backtrace_rs::backtrace::libunwind::trace
                               at /rustc/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
   1:     0x7f6a1bcf5780 - std[259ffe842b18a3d2]::backtrace_rs::backtrace::trace_unsynchronized::<std[259ffe842b18a3d2]::sys::backtrace::_print_fmt::{closure#1}>
                               at /rustc/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
   2:     0x7f6a1bcf5780 - std[259ffe842b18a3d2]::sys::backtrace::_print_fmt
                               at /rustc/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/library/std/src/sys/backtrace.rs:74:9
   3:     0x7f6a1bcf5780 - <<std[259ffe842b18a3d2]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[23bea9c71ca958a1]::fmt::Display>::fmt
                               at /rustc/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/library/std/src/sys/backtrace.rs:44:26
   4:     0x7f6a173d258e - <core[23bea9c71ca958a1]::fmt::rt::Argument>::fmt
                               at /rustc/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/library/core/src/fmt/rt.rs:152:76
   5:     0x7f6a173d258e - core[23bea9c71ca958a1]::fmt::write
   6:     0x7f6a1bd0dfdc - std[259ffe842b18a3d2]::io::default_write_fmt::<std[259ffe842b18a3d2]::sys::stdio::unix::Stderr>
                               at /rustc/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/library/std/src/io/mod.rs:639:11
   7:     0x7f6a1bd0dfdc - <std[259ffe842b18a3d2]::sys::stdio::unix::Stderr as std[259ffe842b18a3d2]::io::Write>::write_fmt
                               at /rustc/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/library/std/src/io/mod.rs:1994:13
   8:     0x7f6a1bcbb096 - <std[259ffe842b18a3d2]::sys::backtrace::BacktraceLock>::print
                               at /rustc/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/library/std/src/sys/backtrace.rs:47:9
   9:     0x7f6a1bcbb096 - std[259ffe842b18a3d2]::panicking::default_hook::{closure#0}
                               at /rustc/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/library/std/src/panicking.rs:292:27
  10:     0x7f6a1bce49a1 - std[259ffe842b18a3d2]::panicking::default_hook
                               at /rustc/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/library/std/src/panicking.rs:319:9
  11:     0x7f6a187a3bd8 - <alloc[5b2374be77f4a650]::boxed::Box<dyn for<'a, 'b> core[23bea9c71ca958a1]::ops::function::Fn<(&'a std[259ffe842b18a3d2]::panic::PanicHookInfo<'b>,), Output = ()> + core[23bea9c71ca958a1]::marker::Send + core[23bea9c71ca958a1]::marker::Sync> as core[23bea9c71ca958a1]::ops::function::Fn<(&std[259ffe842b18a3d2]::panic::PanicHookInfo,)>>::call
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/library/alloc/src/boxed.rs:2220:9
  12:     0x7f6a187a3bd8 - rustc_driver_impl[d4541961b11c78ca]::install_ice_hook::{closure#1}
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_driver_impl/src/lib.rs:1503:17
  13:     0x7f6a187a3bd8 - <alloc[5b2374be77f4a650]::boxed::Box<rustc_driver_impl[d4541961b11c78ca]::install_ice_hook::{closure#1}> as core[23bea9c71ca958a1]::ops::function::Fn<(&dyn for<'a, 'b> core[23bea9c71ca958a1]::ops::function::Fn<(&'a std[259ffe842b18a3d2]::panic::PanicHookInfo<'b>,), Output = ()> + core[23bea9c71ca958a1]::marker::Send + core[23bea9c71ca958a1]::marker::Sync, &std[259ffe842b18a3d2]::panic::PanicHookInfo)>>::call
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/library/alloc/src/boxed.rs:2220:9
  14:     0x7f6a187a3bd8 - std[259ffe842b18a3d2]::panicking::update_hook::<alloc[5b2374be77f4a650]::boxed::Box<rustc_driver_impl[d4541961b11c78ca]::install_ice_hook::{closure#1}>>::{closure#0}
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/library/std/src/panicking.rs:235:47
  15:     0x7f6a1bce4d1a - <alloc[5b2374be77f4a650]::boxed::Box<dyn for<'a, 'b> core[23bea9c71ca958a1]::ops::function::Fn<(&'a std[259ffe842b18a3d2]::panic::PanicHookInfo<'b>,), Output = ()> + core[23bea9c71ca958a1]::marker::Send + core[23bea9c71ca958a1]::marker::Sync> as core[23bea9c71ca958a1]::ops::function::Fn<(&std[259ffe842b18a3d2]::panic::PanicHookInfo,)>>::call
                               at /rustc/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/library/alloc/src/boxed.rs:2220:9
  16:     0x7f6a1bce4d1a - std[259ffe842b18a3d2]::panicking::panic_with_hook
                               at /rustc/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/library/std/src/panicking.rs:833:13
  17:     0x7f6a1bcbb18c - std[259ffe842b18a3d2]::panicking::panic_handler::{closure#0}
                               at /rustc/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/library/std/src/panicking.rs:691:13
  18:     0x7f6a1bca9c19 - std[259ffe842b18a3d2]::sys::backtrace::__rust_end_short_backtrace::<std[259ffe842b18a3d2]::panicking::panic_handler::{closure#0}, !>
                               at /rustc/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/library/std/src/sys/backtrace.rs:182:18
  19:     0x7f6a1bcbd1bd - __rustc[27b7156953f65f57]::rust_begin_unwind
                               at /rustc/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/library/std/src/panicking.rs:689:5
  20:     0x7f6a173d2fbc - core[23bea9c71ca958a1]::panicking::panic_fmt
                               at /rustc/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/library/core/src/panicking.rs:80:14
  21:     0x7f6a173d2f82 - core[23bea9c71ca958a1]::panicking::panic
                               at /rustc/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/library/core/src/panicking.rs:150:5
  22:     0x7f6a1b5252fc - <rustc_next_trait_solver[5d2e2165e8cd4ebf]::canonical::canonicalizer::Canonicalizer<rustc_trait_selection[2eb50791488ac248]::solve::delegate::SolverDelegate, rustc_middle[cba44739a5552ea7]::ty::context::TyCtxt>>::canonicalize_param_env
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_next_trait_solver/src/canonical/canonicalizer.rs:179:13
  23:     0x7f6a1b5252fc - <rustc_next_trait_solver[5d2e2165e8cd4ebf]::canonical::canonicalizer::Canonicalizer<rustc_trait_selection[2eb50791488ac248]::solve::delegate::SolverDelegate, rustc_middle[cba44739a5552ea7]::ty::context::TyCtxt>>::canonicalize_input::<rustc_middle[cba44739a5552ea7]::ty::predicate::Predicate>
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_next_trait_solver/src/canonical/canonicalizer.rs:203:13
  24:     0x7f6a1b5252fc - rustc_next_trait_solver[5d2e2165e8cd4ebf]::canonical::canonicalize_goal::<rustc_trait_selection[2eb50791488ac248]::solve::delegate::SolverDelegate, rustc_middle[cba44739a5552ea7]::ty::context::TyCtxt>
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_next_trait_solver/src/canonical/mod.rs:62:36
  25:     0x7f6a1b6f8b68 - <rustc_next_trait_solver[5d2e2165e8cd4ebf]::solve::eval_ctxt::EvalCtxt<rustc_trait_selection[2eb50791488ac248]::solve::delegate::SolverDelegate, rustc_middle[cba44739a5552ea7]::ty::context::TyCtxt>>::evaluate_goal_raw
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_next_trait_solver/src/solve/eval_ctxt/mod.rs:468:45
  26:     0x7f6a1b6f8724 - <rustc_next_trait_solver[5d2e2165e8cd4ebf]::solve::eval_ctxt::EvalCtxt<rustc_trait_selection[2eb50791488ac248]::solve::delegate::SolverDelegate, rustc_middle[cba44739a5552ea7]::ty::context::TyCtxt>>::evaluate_goal
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_next_trait_solver/src/solve/eval_ctxt/mod.rs:418:18
  27:     0x7f6a1b8fd071 - <rustc_trait_selection[2eb50791488ac248]::solve::delegate::SolverDelegate as rustc_next_trait_solver[5d2e2165e8cd4ebf]::solve::eval_ctxt::SolverDelegateEvalExt>::evaluate_root_goal::{closure#0}::{closure#0}
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_next_trait_solver/src/solve/eval_ctxt/mod.rs:205:17
  28:     0x7f6a1b8fd071 - <rustc_next_trait_solver[5d2e2165e8cd4ebf]::solve::eval_ctxt::EvalCtxt<rustc_trait_selection[2eb50791488ac248]::solve::delegate::SolverDelegate, rustc_middle[cba44739a5552ea7]::ty::context::TyCtxt>>::enter_root::<core[23bea9c71ca958a1]::result::Result<rustc_next_trait_solver[5d2e2165e8cd4ebf]::solve::GoalEvaluation<rustc_middle[cba44739a5552ea7]::ty::context::TyCtxt>, rustc_type_ir[9afd38d0abde4b52]::solve::NoSolution>, <rustc_trait_selection[2eb50791488ac248]::solve::delegate::SolverDelegate as rustc_next_trait_solver[5d2e2165e8cd4ebf]::solve::eval_ctxt::SolverDelegateEvalExt>::evaluate_root_goal::{closure#0}::{closure#0}>
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_next_trait_solver/src/solve/eval_ctxt/mod.rs:334:22
  29:     0x7f6a1b8fd071 - <rustc_trait_selection[2eb50791488ac248]::solve::delegate::SolverDelegate as rustc_next_trait_solver[5d2e2165e8cd4ebf]::solve::eval_ctxt::SolverDelegateEvalExt>::evaluate_root_goal::{closure#0}
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_next_trait_solver/src/solve/eval_ctxt/mod.rs:204:9
  30:     0x7f6a1b8fd071 - <rustc_trait_selection[2eb50791488ac248]::solve::delegate::SolverDelegate as rustc_next_trait_solver[5d2e2165e8cd4ebf]::solve::eval_ctxt::SolverDelegateEvalExt>::evaluate_root_goal
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_next_trait_solver/src/solve/eval_ctxt/mod.rs:197:5
  31:     0x7f6a1b847a84 - <rustc_trait_selection[2eb50791488ac248]::solve::fulfill::FulfillmentCtxt<rustc_infer[c0650fcd5563801d]::traits::engine::ScrubbedTraitError> as rustc_infer[c0650fcd5563801d]::traits::engine::TraitEngine<rustc_infer[c0650fcd5563801d]::traits::engine::ScrubbedTraitError>>::try_evaluate_obligations
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_trait_selection/src/solve/fulfill.rs:214:39
  32:     0x7f6a1b93112c - <rustc_trait_selection[2eb50791488ac248]::solve::fulfill::FulfillmentCtxt<rustc_infer[c0650fcd5563801d]::traits::engine::ScrubbedTraitError> as rustc_infer[c0650fcd5563801d]::traits::engine::TraitEngine<rustc_infer[c0650fcd5563801d]::traits::engine::ScrubbedTraitError>>::evaluate_obligations_error_on_ambiguity
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_infer/src/traits/engine.rs:99:27
  33:     0x7f6a1b838f2e - <rustc_trait_selection[2eb50791488ac248]::traits::engine::ObligationCtxt>::evaluate_obligations_error_on_ambiguity
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_trait_selection/src/traits/engine.rs:228:34
  34:     0x7f6a1b838f2e - <rustc_infer[c0650fcd5563801d]::infer::InferCtxt as rustc_trait_selection[2eb50791488ac248]::traits::query::evaluate_obligation::InferCtxtExt>::evaluate_obligation::{closure#0}
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_trait_selection/src/traits/query/evaluate_obligation.rs:99:34
  35:     0x7f6a1b838f2e - <rustc_infer[c0650fcd5563801d]::infer::InferCtxt>::probe::<core[23bea9c71ca958a1]::result::Result<rustc_middle[cba44739a5552ea7]::traits::select::EvaluationResult, rustc_middle[cba44739a5552ea7]::traits::select::OverflowError>, <rustc_infer[c0650fcd5563801d]::infer::InferCtxt as rustc_trait_selection[2eb50791488ac248]::traits::query::evaluate_obligation::InferCtxtExt>::evaluate_obligation::{closure#0}>
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_infer/src/infer/snapshot/mod.rs:106:17
  36:     0x7f6a1b838f2e - <rustc_infer[c0650fcd5563801d]::infer::InferCtxt as rustc_trait_selection[2eb50791488ac248]::traits::query::evaluate_obligation::InferCtxtExt>::evaluate_obligation
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_trait_selection/src/traits/query/evaluate_obligation.rs:95:18
  37:     0x7f6a1b83999c - <rustc_infer[c0650fcd5563801d]::infer::InferCtxt as rustc_trait_selection[2eb50791488ac248]::traits::query::evaluate_obligation::InferCtxtExt>::evaluate_obligation_no_overflow
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_trait_selection/src/traits/query/evaluate_obligation.rs:130:20
  38:     0x7f6a1b710324 - <rustc_infer[c0650fcd5563801d]::infer::InferCtxt as rustc_trait_selection[2eb50791488ac248]::traits::query::evaluate_obligation::InferCtxtExt>::predicate_may_hold
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_trait_selection/src/traits/query/evaluate_obligation.rs:18:14
  39:     0x7f6a1b710324 - <rustc_trait_selection[2eb50791488ac248]::error_reporting::TypeErrCtxt>::predicate_can_apply::{closure#0}
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_trait_selection/src/error_reporting/traits/fulfillment_errors.rs:2663:18
  40:     0x7f6a1b710324 - <rustc_infer[c0650fcd5563801d]::infer::InferCtxt>::probe::<bool, <rustc_trait_selection[2eb50791488ac248]::error_reporting::TypeErrCtxt>::predicate_can_apply::{closure#0}>
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_infer/src/infer/snapshot/mod.rs:106:17
  41:     0x7f6a1b710324 - <rustc_trait_selection[2eb50791488ac248]::error_reporting::TypeErrCtxt>::predicate_can_apply
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_trait_selection/src/error_reporting/traits/fulfillment_errors.rs:2653:14
  42:     0x7f6a1b710324 - <rustc_trait_selection[2eb50791488ac248]::error_reporting::TypeErrCtxt>::try_to_add_help_message
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_trait_selection/src/error_reporting/traits/fulfillment_errors.rs:2950:21
  43:     0x7f6a1b6bb0fd - <rustc_trait_selection[2eb50791488ac248]::error_reporting::TypeErrCtxt>::report_selection_error
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_trait_selection/src/error_reporting/traits/fulfillment_errors.rs:524:30
  44:     0x7f6a1b7276f3 - <rustc_trait_selection[2eb50791488ac248]::error_reporting::TypeErrCtxt>::report_fulfillment_error
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_trait_selection/src/error_reporting/traits/mod.rs:306:71
  45:     0x7f6a1b7276f3 - <rustc_trait_selection[2eb50791488ac248]::error_reporting::TypeErrCtxt>::report_fulfillment_errors
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_trait_selection/src/error_reporting/traits/mod.rs:259:41
  46:     0x7f6a18f24880 - <rustc_hir_typeck[153c689249f68921]::fn_ctxt::FnCtxt>::select_obligations_where_possible::<<rustc_hir_typeck[153c689249f68921]::fn_ctxt::FnCtxt>::resolve_vars_with_obligations<rustc_middle[cba44739a5552ea7]::ty::Ty>::{closure#0}::{closure#0}>
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_hir_typeck/src/fn_ctxt/_impl.rs:654:29
  47:     0x7f6a18f24880 - <rustc_hir_typeck[153c689249f68921]::fn_ctxt::FnCtxt>::resolve_vars_with_obligations::<rustc_middle[cba44739a5552ea7]::ty::Ty>::{closure#0}
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_hir_typeck/src/fn_ctxt/_impl.rs:109:14
  48:     0x7f6a18f24880 - <rustc_hir_typeck[153c689249f68921]::fn_ctxt::FnCtxt>::resolve_vars_with_obligations::<rustc_middle[cba44739a5552ea7]::ty::Ty>
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_hir_typeck/src/fn_ctxt/_impl.rs:87:5
  49:     0x7f6a191e7530 - <rustc_hir_typeck[153c689249f68921]::fn_ctxt::FnCtxt>::try_structurally_resolve_type::{closure#0}
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_hir_typeck/src/fn_ctxt/_impl.rs:1386:18
  50:     0x7f6a191e7530 - <rustc_hir_typeck[153c689249f68921]::fn_ctxt::FnCtxt>::try_structurally_resolve_type
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_hir_typeck/src/fn_ctxt/_impl.rs:1367:5
  51:     0x7f6a1915ded6 - <rustc_hir_typeck[153c689249f68921]::fn_ctxt::FnCtxt>::check_expr_with_expectation_and_args
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_hir_typeck/src/expr.rs:322:17
  52:     0x7f6a1915b6cc - <rustc_hir_typeck[153c689249f68921]::fn_ctxt::FnCtxt>::check_expr_with_expectation
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_hir_typeck/src/expr.rs:231:14
  53:     0x7f6a1915afea - <rustc_hir_typeck[153c689249f68921]::fn_ctxt::FnCtxt>::check_expr_with_hint
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_hir_typeck/src/expr.rs:186:14
  54:     0x7f6a1915afea - <rustc_hir_typeck[153c689249f68921]::fn_ctxt::FnCtxt>::check_return_or_body_tail
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_hir_typeck/src/expr.rs:968:35
  55:     0x7f6a192d8a27 - rustc_hir_typeck[153c689249f68921]::check::check_fn
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_hir_typeck/src/check.rs:130:9
  56:     0x7f6a190fdecd - rustc_hir_typeck[153c689249f68921]::typeck_with_inspect::{closure#0}
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_hir_typeck/src/lib.rs:180:9
  57:     0x7f6a1911bd9b - rustc_hir_typeck[153c689249f68921]::typeck_with_inspect
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_hir_typeck/src/lib.rs:105:1
  58:     0x7f6a1aa8760e - rustc_query_impl[6e9d2145c92ff04a]::query_impl::typeck::dynamic_query::{closure#2}::{closure#0}
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_query_impl/src/plumbing.rs:282:9
  59:     0x7f6a1aa8760e - rustc_query_impl[6e9d2145c92ff04a]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[6e9d2145c92ff04a]::query_impl::typeck::dynamic_query::{closure#2}::{closure#0}, rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 8usize]>>
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_query_impl/src/plumbing.rs:552:18
  60:     0x7f6a1aeac8ab - rustc_query_impl[6e9d2145c92ff04a]::query_impl::typeck::dynamic_query::{closure#2}
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_query_impl/src/plumbing.rs:629:25
  61:     0x7f6a1aeac8ab - <rustc_query_impl[6e9d2145c92ff04a]::query_impl::typeck::dynamic_query::{closure#2} as core[23bea9c71ca958a1]::ops::function::FnOnce<(rustc_middle[cba44739a5552ea7]::ty::context::TyCtxt, rustc_span[2234d008956aa855]::def_id::LocalDefId)>>::call_once
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/library/core/src/ops/function.rs:250:5
  62:     0x7f6a1ab4991a - <rustc_query_impl[6e9d2145c92ff04a]::DynamicConfig<rustc_data_structures[c7bdabbf4a181cf8]::vec_cache::VecCache<rustc_hir_id[42913d7296abca4d]::OwnerId, rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 8usize]>, rustc_query_system[30fcfc6fe94828a4]::dep_graph::graph::DepNodeIndex>, false, false, false> as rustc_query_system[30fcfc6fe94828a4]::query::config::QueryConfig<rustc_query_impl[6e9d2145c92ff04a]::plumbing::QueryCtxt>>::compute
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_query_impl/src/lib.rs:116:9
  63:     0x7f6a1ab4991a - rustc_query_system[30fcfc6fe94828a4]::query::plumbing::execute_job_non_incr::<rustc_query_impl[6e9d2145c92ff04a]::DynamicConfig<rustc_data_structures[c7bdabbf4a181cf8]::vec_cache::VecCache<rustc_hir_id[42913d7296abca4d]::OwnerId, rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 8usize]>, rustc_query_system[30fcfc6fe94828a4]::dep_graph::graph::DepNodeIndex>, false, false, false>, rustc_query_impl[6e9d2145c92ff04a]::plumbing::QueryCtxt>::{closure#0}
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_query_system/src/query/plumbing.rs:497:72
  64:     0x7f6a1ab4991a - rustc_middle[cba44739a5552ea7]::ty::context::tls::enter_context::<rustc_query_system[30fcfc6fe94828a4]::query::plumbing::execute_job_non_incr<rustc_query_impl[6e9d2145c92ff04a]::DynamicConfig<rustc_data_structures[c7bdabbf4a181cf8]::vec_cache::VecCache<rustc_hir_id[42913d7296abca4d]::OwnerId, rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 8usize]>, rustc_query_system[30fcfc6fe94828a4]::dep_graph::graph::DepNodeIndex>, false, false, false>, rustc_query_impl[6e9d2145c92ff04a]::plumbing::QueryCtxt>::{closure#0}, rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 8usize]>>::{closure#0}
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_middle/src/ty/context/tls.rs:60:9
  65:     0x7f6a1ab4991a - <std[259ffe842b18a3d2]::thread::local::LocalKey<core[23bea9c71ca958a1]::cell::Cell<*const ()>>>::try_with::<rustc_middle[cba44739a5552ea7]::ty::context::tls::enter_context<rustc_query_system[30fcfc6fe94828a4]::query::plumbing::execute_job_non_incr<rustc_query_impl[6e9d2145c92ff04a]::DynamicConfig<rustc_data_structures[c7bdabbf4a181cf8]::vec_cache::VecCache<rustc_hir_id[42913d7296abca4d]::OwnerId, rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 8usize]>, rustc_query_system[30fcfc6fe94828a4]::dep_graph::graph::DepNodeIndex>, false, false, false>, rustc_query_impl[6e9d2145c92ff04a]::plumbing::QueryCtxt>::{closure#0}, rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 8usize]>>::{closure#0}, rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 8usize]>>
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/library/std/src/thread/local.rs:513:12
  66:     0x7f6a1ab4991a - <std[259ffe842b18a3d2]::thread::local::LocalKey<core[23bea9c71ca958a1]::cell::Cell<*const ()>>>::with::<rustc_middle[cba44739a5552ea7]::ty::context::tls::enter_context<rustc_query_system[30fcfc6fe94828a4]::query::plumbing::execute_job_non_incr<rustc_query_impl[6e9d2145c92ff04a]::DynamicConfig<rustc_data_structures[c7bdabbf4a181cf8]::vec_cache::VecCache<rustc_hir_id[42913d7296abca4d]::OwnerId, rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 8usize]>, rustc_query_system[30fcfc6fe94828a4]::dep_graph::graph::DepNodeIndex>, false, false, false>, rustc_query_impl[6e9d2145c92ff04a]::plumbing::QueryCtxt>::{closure#0}, rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 8usize]>>::{closure#0}, rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 8usize]>>
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/library/std/src/thread/local.rs:477:20
  67:     0x7f6a1ab4991a - rustc_middle[cba44739a5552ea7]::ty::context::tls::enter_context::<rustc_query_system[30fcfc6fe94828a4]::query::plumbing::execute_job_non_incr<rustc_query_impl[6e9d2145c92ff04a]::DynamicConfig<rustc_data_structures[c7bdabbf4a181cf8]::vec_cache::VecCache<rustc_hir_id[42913d7296abca4d]::OwnerId, rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 8usize]>, rustc_query_system[30fcfc6fe94828a4]::dep_graph::graph::DepNodeIndex>, false, false, false>, rustc_query_impl[6e9d2145c92ff04a]::plumbing::QueryCtxt>::{closure#0}, rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 8usize]>>
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_middle/src/ty/context/tls.rs:57:9
  68:     0x7f6a1ab4991a - <rustc_query_impl[6e9d2145c92ff04a]::plumbing::QueryCtxt as rustc_query_system[30fcfc6fe94828a4]::query::QueryContext>::start_query::<rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 8usize]>, rustc_query_system[30fcfc6fe94828a4]::query::plumbing::execute_job_non_incr<rustc_query_impl[6e9d2145c92ff04a]::DynamicConfig<rustc_data_structures[c7bdabbf4a181cf8]::vec_cache::VecCache<rustc_hir_id[42913d7296abca4d]::OwnerId, rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 8usize]>, rustc_query_system[30fcfc6fe94828a4]::dep_graph::graph::DepNodeIndex>, false, false, false>, rustc_query_impl[6e9d2145c92ff04a]::plumbing::QueryCtxt>::{closure#0}>::{closure#0}
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_query_impl/src/plumbing.rs:156:13
  69:     0x7f6a1ab4991a - rustc_middle[cba44739a5552ea7]::ty::context::tls::with_related_context::<<rustc_query_impl[6e9d2145c92ff04a]::plumbing::QueryCtxt as rustc_query_system[30fcfc6fe94828a4]::query::QueryContext>::start_query<rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 8usize]>, rustc_query_system[30fcfc6fe94828a4]::query::plumbing::execute_job_non_incr<rustc_query_impl[6e9d2145c92ff04a]::DynamicConfig<rustc_data_structures[c7bdabbf4a181cf8]::vec_cache::VecCache<rustc_hir_id[42913d7296abca4d]::OwnerId, rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 8usize]>, rustc_query_system[30fcfc6fe94828a4]::dep_graph::graph::DepNodeIndex>, false, false, false>, rustc_query_impl[6e9d2145c92ff04a]::plumbing::QueryCtxt>::{closure#0}>::{closure#0}, rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 8usize]>>::{closure#0}
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_middle/src/ty/context/tls.rs:112:9
  70:     0x7f6a1ab4991a - rustc_middle[cba44739a5552ea7]::ty::context::tls::with_context::<rustc_middle[cba44739a5552ea7]::ty::context::tls::with_related_context<<rustc_query_impl[6e9d2145c92ff04a]::plumbing::QueryCtxt as rustc_query_system[30fcfc6fe94828a4]::query::QueryContext>::start_query<rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 8usize]>, rustc_query_system[30fcfc6fe94828a4]::query::plumbing::execute_job_non_incr<rustc_query_impl[6e9d2145c92ff04a]::DynamicConfig<rustc_data_structures[c7bdabbf4a181cf8]::vec_cache::VecCache<rustc_hir_id[42913d7296abca4d]::OwnerId, rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 8usize]>, rustc_query_system[30fcfc6fe94828a4]::dep_graph::graph::DepNodeIndex>, false, false, false>, rustc_query_impl[6e9d2145c92ff04a]::plumbing::QueryCtxt>::{closure#0}>::{closure#0}, rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 8usize]>>::{closure#0}, rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 8usize]>>::{closure#0}
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_middle/src/ty/context/tls.rs:90:36
  71:     0x7f6a1ab4991a - rustc_middle[cba44739a5552ea7]::ty::context::tls::with_context_opt::<rustc_middle[cba44739a5552ea7]::ty::context::tls::with_context<rustc_middle[cba44739a5552ea7]::ty::context::tls::with_related_context<<rustc_query_impl[6e9d2145c92ff04a]::plumbing::QueryCtxt as rustc_query_system[30fcfc6fe94828a4]::query::QueryContext>::start_query<rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 8usize]>, rustc_query_system[30fcfc6fe94828a4]::query::plumbing::execute_job_non_incr<rustc_query_impl[6e9d2145c92ff04a]::DynamicConfig<rustc_data_structures[c7bdabbf4a181cf8]::vec_cache::VecCache<rustc_hir_id[42913d7296abca4d]::OwnerId, rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 8usize]>, rustc_query_system[30fcfc6fe94828a4]::dep_graph::graph::DepNodeIndex>, false, false, false>, rustc_query_impl[6e9d2145c92ff04a]::plumbing::QueryCtxt>::{closure#0}>::{closure#0}, rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 8usize]>>::{closure#0}, rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 8usize]>>::{closure#0}, rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 8usize]>>
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_middle/src/ty/context/tls.rs:79:18
  72:     0x7f6a1ab4991a - rustc_middle[cba44739a5552ea7]::ty::context::tls::with_context::<rustc_middle[cba44739a5552ea7]::ty::context::tls::with_related_context<<rustc_query_impl[6e9d2145c92ff04a]::plumbing::QueryCtxt as rustc_query_system[30fcfc6fe94828a4]::query::QueryContext>::start_query<rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 8usize]>, rustc_query_system[30fcfc6fe94828a4]::query::plumbing::execute_job_non_incr<rustc_query_impl[6e9d2145c92ff04a]::DynamicConfig<rustc_data_structures[c7bdabbf4a181cf8]::vec_cache::VecCache<rustc_hir_id[42913d7296abca4d]::OwnerId, rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 8usize]>, rustc_query_system[30fcfc6fe94828a4]::dep_graph::graph::DepNodeIndex>, false, false, false>, rustc_query_impl[6e9d2145c92ff04a]::plumbing::QueryCtxt>::{closure#0}>::{closure#0}, rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 8usize]>>::{closure#0}, rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 8usize]>>
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_middle/src/ty/context/tls.rs:90:5
  73:     0x7f6a1ab4991a - rustc_middle[cba44739a5552ea7]::ty::context::tls::with_related_context::<<rustc_query_impl[6e9d2145c92ff04a]::plumbing::QueryCtxt as rustc_query_system[30fcfc6fe94828a4]::query::QueryContext>::start_query<rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 8usize]>, rustc_query_system[30fcfc6fe94828a4]::query::plumbing::execute_job_non_incr<rustc_query_impl[6e9d2145c92ff04a]::DynamicConfig<rustc_data_structures[c7bdabbf4a181cf8]::vec_cache::VecCache<rustc_hir_id[42913d7296abca4d]::OwnerId, rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 8usize]>, rustc_query_system[30fcfc6fe94828a4]::dep_graph::graph::DepNodeIndex>, false, false, false>, rustc_query_impl[6e9d2145c92ff04a]::plumbing::QueryCtxt>::{closure#0}>::{closure#0}, rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 8usize]>>
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_middle/src/ty/context/tls.rs:103:5
  74:     0x7f6a1ab4991a - <rustc_query_impl[6e9d2145c92ff04a]::plumbing::QueryCtxt as rustc_query_system[30fcfc6fe94828a4]::query::QueryContext>::start_query::<rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 8usize]>, rustc_query_system[30fcfc6fe94828a4]::query::plumbing::execute_job_non_incr<rustc_query_impl[6e9d2145c92ff04a]::DynamicConfig<rustc_data_structures[c7bdabbf4a181cf8]::vec_cache::VecCache<rustc_hir_id[42913d7296abca4d]::OwnerId, rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 8usize]>, rustc_query_system[30fcfc6fe94828a4]::dep_graph::graph::DepNodeIndex>, false, false, false>, rustc_query_impl[6e9d2145c92ff04a]::plumbing::QueryCtxt>::{closure#0}>
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_query_impl/src/plumbing.rs:142:9
  75:     0x7f6a1ab4991a - rustc_query_system[30fcfc6fe94828a4]::query::plumbing::execute_job_non_incr::<rustc_query_impl[6e9d2145c92ff04a]::DynamicConfig<rustc_data_structures[c7bdabbf4a181cf8]::vec_cache::VecCache<rustc_hir_id[42913d7296abca4d]::OwnerId, rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 8usize]>, rustc_query_system[30fcfc6fe94828a4]::dep_graph::graph::DepNodeIndex>, false, false, false>, rustc_query_impl[6e9d2145c92ff04a]::plumbing::QueryCtxt>
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_query_system/src/query/plumbing.rs:497:22
  76:     0x7f6a1ab4991a - rustc_query_system[30fcfc6fe94828a4]::query::plumbing::execute_job::<rustc_query_impl[6e9d2145c92ff04a]::DynamicConfig<rustc_data_structures[c7bdabbf4a181cf8]::vec_cache::VecCache<rustc_hir_id[42913d7296abca4d]::OwnerId, rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 8usize]>, rustc_query_system[30fcfc6fe94828a4]::dep_graph::graph::DepNodeIndex>, false, false, false>, rustc_query_impl[6e9d2145c92ff04a]::plumbing::QueryCtxt, false>
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_query_system/src/query/plumbing.rs:433:9
  77:     0x7f6a1ab4991a - rustc_query_system[30fcfc6fe94828a4]::query::plumbing::try_execute_query::<rustc_query_impl[6e9d2145c92ff04a]::DynamicConfig<rustc_data_structures[c7bdabbf4a181cf8]::vec_cache::VecCache<rustc_hir_id[42913d7296abca4d]::OwnerId, rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 8usize]>, rustc_query_system[30fcfc6fe94828a4]::dep_graph::graph::DepNodeIndex>, false, false, false>, rustc_query_impl[6e9d2145c92ff04a]::plumbing::QueryCtxt, false>
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_query_system/src/query/plumbing.rs:376:13
  78:     0x7f6a1acc25ac - rustc_query_system[30fcfc6fe94828a4]::query::plumbing::get_query_non_incr::<rustc_query_impl[6e9d2145c92ff04a]::DynamicConfig<rustc_data_structures[c7bdabbf4a181cf8]::vec_cache::VecCache<rustc_span[2234d008956aa855]::def_id::LocalDefId, rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 8usize]>, rustc_query_system[30fcfc6fe94828a4]::dep_graph::graph::DepNodeIndex>, false, false, false>, rustc_query_impl[6e9d2145c92ff04a]::plumbing::QueryCtxt>::{closure#0}
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_query_system/src/query/plumbing.rs:818:32
  79:     0x7f6a1acc25ac - stacker[363475d9565eafdb]::maybe_grow::<rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 8usize]>, rustc_query_system[30fcfc6fe94828a4]::query::plumbing::get_query_non_incr<rustc_query_impl[6e9d2145c92ff04a]::DynamicConfig<rustc_data_structures[c7bdabbf4a181cf8]::vec_cache::VecCache<rustc_span[2234d008956aa855]::def_id::LocalDefId, rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 8usize]>, rustc_query_system[30fcfc6fe94828a4]::dep_graph::graph::DepNodeIndex>, false, false, false>, rustc_query_impl[6e9d2145c92ff04a]::plumbing::QueryCtxt>::{closure#0}>
                               at /rust/deps/stacker-0.1.21/src/lib.rs:57:9
  80:     0x7f6a1acc25ac - rustc_data_structures[c7bdabbf4a181cf8]::stack::ensure_sufficient_stack::<rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 8usize]>, rustc_query_system[30fcfc6fe94828a4]::query::plumbing::get_query_non_incr<rustc_query_impl[6e9d2145c92ff04a]::DynamicConfig<rustc_data_structures[c7bdabbf4a181cf8]::vec_cache::VecCache<rustc_span[2234d008956aa855]::def_id::LocalDefId, rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 8usize]>, rustc_query_system[30fcfc6fe94828a4]::dep_graph::graph::DepNodeIndex>, false, false, false>, rustc_query_impl[6e9d2145c92ff04a]::plumbing::QueryCtxt>::{closure#0}>
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_data_structures/src/stack.rs:21:5
  81:     0x7f6a1acc25ac - rustc_query_system[30fcfc6fe94828a4]::query::plumbing::get_query_non_incr::<rustc_query_impl[6e9d2145c92ff04a]::DynamicConfig<rustc_data_structures[c7bdabbf4a181cf8]::vec_cache::VecCache<rustc_span[2234d008956aa855]::def_id::LocalDefId, rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 8usize]>, rustc_query_system[30fcfc6fe94828a4]::dep_graph::graph::DepNodeIndex>, false, false, false>, rustc_query_impl[6e9d2145c92ff04a]::plumbing::QueryCtxt>
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_query_system/src/query/plumbing.rs:818:5
  82:     0x7f6a1acc25ac - rustc_query_impl[6e9d2145c92ff04a]::query_impl::typeck::get_query_non_incr::__rust_end_short_backtrace
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_query_impl/src/plumbing.rs:605:26
  83:     0x7f6a19fd9112 - rustc_middle[cba44739a5552ea7]::query::inner::query_get_at::<rustc_data_structures[c7bdabbf4a181cf8]::vec_cache::VecCache<rustc_span[2234d008956aa855]::def_id::LocalDefId, rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 8usize]>, rustc_query_system[30fcfc6fe94828a4]::dep_graph::graph::DepNodeIndex>>
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_middle/src/query/inner.rs:33:17
  84:     0x7f6a19fd9112 - <rustc_middle[cba44739a5552ea7]::query::plumbing::TyCtxtAt>::typeck::<rustc_span[2234d008956aa855]::def_id::LocalDefId>
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_middle/src/query/plumbing.rs:415:31
  85:     0x7f6a19fd9112 - <rustc_middle[cba44739a5552ea7]::ty::context::TyCtxt>::typeck::<rustc_span[2234d008956aa855]::def_id::LocalDefId>
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_middle/src/query/plumbing.rs:406:35
  86:     0x7f6a19fd9112 - rustc_mir_build[44524c81f9cc8bae]::thir::pattern::check_match::check_match
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_mir_build/src/thir/pattern/check_match.rs:35:30
  87:     0x7f6a1aa65c4e - rustc_query_impl[6e9d2145c92ff04a]::query_impl::check_match::dynamic_query::{closure#2}::{closure#0}
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_query_impl/src/plumbing.rs:282:9
  88:     0x7f6a1aa65c4e - rustc_query_impl[6e9d2145c92ff04a]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[6e9d2145c92ff04a]::query_impl::check_match::dynamic_query::{closure#2}::{closure#0}, rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 1usize]>>
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_query_impl/src/plumbing.rs:552:18
  89:     0x7f6a1ae2d53b - rustc_query_impl[6e9d2145c92ff04a]::query_impl::check_match::dynamic_query::{closure#2}
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_query_impl/src/plumbing.rs:629:25
  90:     0x7f6a1ae2d53b - <rustc_query_impl[6e9d2145c92ff04a]::query_impl::check_match::dynamic_query::{closure#2} as core[23bea9c71ca958a1]::ops::function::FnOnce<(rustc_middle[cba44739a5552ea7]::ty::context::TyCtxt, rustc_span[2234d008956aa855]::def_id::LocalDefId)>>::call_once
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/library/core/src/ops/function.rs:250:5
  91:     0x7f6a1ab5355a - <rustc_query_impl[6e9d2145c92ff04a]::DynamicConfig<rustc_data_structures[c7bdabbf4a181cf8]::vec_cache::VecCache<rustc_span[2234d008956aa855]::def_id::LocalDefId, rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 1usize]>, rustc_query_system[30fcfc6fe94828a4]::dep_graph::graph::DepNodeIndex>, false, false, false> as rustc_query_system[30fcfc6fe94828a4]::query::config::QueryConfig<rustc_query_impl[6e9d2145c92ff04a]::plumbing::QueryCtxt>>::compute
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_query_impl/src/lib.rs:116:9
  92:     0x7f6a1ab5355a - rustc_query_system[30fcfc6fe94828a4]::query::plumbing::execute_job_non_incr::<rustc_query_impl[6e9d2145c92ff04a]::DynamicConfig<rustc_data_structures[c7bdabbf4a181cf8]::vec_cache::VecCache<rustc_span[2234d008956aa855]::def_id::LocalDefId, rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 1usize]>, rustc_query_system[30fcfc6fe94828a4]::dep_graph::graph::DepNodeIndex>, false, false, false>, rustc_query_impl[6e9d2145c92ff04a]::plumbing::QueryCtxt>::{closure#0}
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_query_system/src/query/plumbing.rs:497:72
  93:     0x7f6a1ab5355a - rustc_middle[cba44739a5552ea7]::ty::context::tls::enter_context::<rustc_query_system[30fcfc6fe94828a4]::query::plumbing::execute_job_non_incr<rustc_query_impl[6e9d2145c92ff04a]::DynamicConfig<rustc_data_structures[c7bdabbf4a181cf8]::vec_cache::VecCache<rustc_span[2234d008956aa855]::def_id::LocalDefId, rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 1usize]>, rustc_query_system[30fcfc6fe94828a4]::dep_graph::graph::DepNodeIndex>, false, false, false>, rustc_query_impl[6e9d2145c92ff04a]::plumbing::QueryCtxt>::{closure#0}, rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 1usize]>>::{closure#0}
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_middle/src/ty/context/tls.rs:60:9
  94:     0x7f6a1ab5355a - <std[259ffe842b18a3d2]::thread::local::LocalKey<core[23bea9c71ca958a1]::cell::Cell<*const ()>>>::try_with::<rustc_middle[cba44739a5552ea7]::ty::context::tls::enter_context<rustc_query_system[30fcfc6fe94828a4]::query::plumbing::execute_job_non_incr<rustc_query_impl[6e9d2145c92ff04a]::DynamicConfig<rustc_data_structures[c7bdabbf4a181cf8]::vec_cache::VecCache<rustc_span[2234d008956aa855]::def_id::LocalDefId, rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 1usize]>, rustc_query_system[30fcfc6fe94828a4]::dep_graph::graph::DepNodeIndex>, false, false, false>, rustc_query_impl[6e9d2145c92ff04a]::plumbing::QueryCtxt>::{closure#0}, rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 1usize]>>::{closure#0}, rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 1usize]>>
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/library/std/src/thread/local.rs:513:12
  95:     0x7f6a1ab5355a - <std[259ffe842b18a3d2]::thread::local::LocalKey<core[23bea9c71ca958a1]::cell::Cell<*const ()>>>::with::<rustc_middle[cba44739a5552ea7]::ty::context::tls::enter_context<rustc_query_system[30fcfc6fe94828a4]::query::plumbing::execute_job_non_incr<rustc_query_impl[6e9d2145c92ff04a]::DynamicConfig<rustc_data_structures[c7bdabbf4a181cf8]::vec_cache::VecCache<rustc_span[2234d008956aa855]::def_id::LocalDefId, rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 1usize]>, rustc_query_system[30fcfc6fe94828a4]::dep_graph::graph::DepNodeIndex>, false, false, false>, rustc_query_impl[6e9d2145c92ff04a]::plumbing::QueryCtxt>::{closure#0}, rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 1usize]>>::{closure#0}, rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 1usize]>>
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/library/std/src/thread/local.rs:477:20
  96:     0x7f6a1ab5355a - rustc_middle[cba44739a5552ea7]::ty::context::tls::enter_context::<rustc_query_system[30fcfc6fe94828a4]::query::plumbing::execute_job_non_incr<rustc_query_impl[6e9d2145c92ff04a]::DynamicConfig<rustc_data_structures[c7bdabbf4a181cf8]::vec_cache::VecCache<rustc_span[2234d008956aa855]::def_id::LocalDefId, rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 1usize]>, rustc_query_system[30fcfc6fe94828a4]::dep_graph::graph::DepNodeIndex>, false, false, false>, rustc_query_impl[6e9d2145c92ff04a]::plumbing::QueryCtxt>::{closure#0}, rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 1usize]>>
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_middle/src/ty/context/tls.rs:57:9
  97:     0x7f6a1ab5355a - <rustc_query_impl[6e9d2145c92ff04a]::plumbing::QueryCtxt as rustc_query_system[30fcfc6fe94828a4]::query::QueryContext>::start_query::<rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 1usize]>, rustc_query_system[30fcfc6fe94828a4]::query::plumbing::execute_job_non_incr<rustc_query_impl[6e9d2145c92ff04a]::DynamicConfig<rustc_data_structures[c7bdabbf4a181cf8]::vec_cache::VecCache<rustc_span[2234d008956aa855]::def_id::LocalDefId, rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 1usize]>, rustc_query_system[30fcfc6fe94828a4]::dep_graph::graph::DepNodeIndex>, false, false, false>, rustc_query_impl[6e9d2145c92ff04a]::plumbing::QueryCtxt>::{closure#0}>::{closure#0}
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_query_impl/src/plumbing.rs:156:13
  98:     0x7f6a1ab5355a - rustc_middle[cba44739a5552ea7]::ty::context::tls::with_related_context::<<rustc_query_impl[6e9d2145c92ff04a]::plumbing::QueryCtxt as rustc_query_system[30fcfc6fe94828a4]::query::QueryContext>::start_query<rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 1usize]>, rustc_query_system[30fcfc6fe94828a4]::query::plumbing::execute_job_non_incr<rustc_query_impl[6e9d2145c92ff04a]::DynamicConfig<rustc_data_structures[c7bdabbf4a181cf8]::vec_cache::VecCache<rustc_span[2234d008956aa855]::def_id::LocalDefId, rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 1usize]>, rustc_query_system[30fcfc6fe94828a4]::dep_graph::graph::DepNodeIndex>, false, false, false>, rustc_query_impl[6e9d2145c92ff04a]::plumbing::QueryCtxt>::{closure#0}>::{closure#0}, rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 1usize]>>::{closure#0}
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_middle/src/ty/context/tls.rs:112:9
  99:     0x7f6a1ab5355a - rustc_middle[cba44739a5552ea7]::ty::context::tls::with_context::<rustc_middle[cba44739a5552ea7]::ty::context::tls::with_related_context<<rustc_query_impl[6e9d2145c92ff04a]::plumbing::QueryCtxt as rustc_query_system[30fcfc6fe94828a4]::query::QueryContext>::start_query<rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 1usize]>, rustc_query_system[30fcfc6fe94828a4]::query::plumbing::execute_job_non_incr<rustc_query_impl[6e9d2145c92ff04a]::DynamicConfig<rustc_data_structures[c7bdabbf4a181cf8]::vec_cache::VecCache<rustc_span[2234d008956aa855]::def_id::LocalDefId, rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 1usize]>, rustc_query_system[30fcfc6fe94828a4]::dep_graph::graph::DepNodeIndex>, false, false, false>, rustc_query_impl[6e9d2145c92ff04a]::plumbing::QueryCtxt>::{closure#0}>::{closure#0}, rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 1usize]>>::{closure#0}, rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 1usize]>>::{closure#0}
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_middle/src/ty/context/tls.rs:90:36
 100:     0x7f6a1ab5355a - rustc_middle[cba44739a5552ea7]::ty::context::tls::with_context_opt::<rustc_middle[cba44739a5552ea7]::ty::context::tls::with_context<rustc_middle[cba44739a5552ea7]::ty::context::tls::with_related_context<<rustc_query_impl[6e9d2145c92ff04a]::plumbing::QueryCtxt as rustc_query_system[30fcfc6fe94828a4]::query::QueryContext>::start_query<rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 1usize]>, rustc_query_system[30fcfc6fe94828a4]::query::plumbing::execute_job_non_incr<rustc_query_impl[6e9d2145c92ff04a]::DynamicConfig<rustc_data_structures[c7bdabbf4a181cf8]::vec_cache::VecCache<rustc_span[2234d008956aa855]::def_id::LocalDefId, rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 1usize]>, rustc_query_system[30fcfc6fe94828a4]::dep_graph::graph::DepNodeIndex>, false, false, false>, rustc_query_impl[6e9d2145c92ff04a]::plumbing::QueryCtxt>::{closure#0}>::{closure#0}, rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 1usize]>>::{closure#0}, rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 1usize]>>::{closure#0}, rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 1usize]>>
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_middle/src/ty/context/tls.rs:79:18
 101:     0x7f6a1ab5355a - rustc_middle[cba44739a5552ea7]::ty::context::tls::with_context::<rustc_middle[cba44739a5552ea7]::ty::context::tls::with_related_context<<rustc_query_impl[6e9d2145c92ff04a]::plumbing::QueryCtxt as rustc_query_system[30fcfc6fe94828a4]::query::QueryContext>::start_query<rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 1usize]>, rustc_query_system[30fcfc6fe94828a4]::query::plumbing::execute_job_non_incr<rustc_query_impl[6e9d2145c92ff04a]::DynamicConfig<rustc_data_structures[c7bdabbf4a181cf8]::vec_cache::VecCache<rustc_span[2234d008956aa855]::def_id::LocalDefId, rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 1usize]>, rustc_query_system[30fcfc6fe94828a4]::dep_graph::graph::DepNodeIndex>, false, false, false>, rustc_query_impl[6e9d2145c92ff04a]::plumbing::QueryCtxt>::{closure#0}>::{closure#0}, rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 1usize]>>::{closure#0}, rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 1usize]>>
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_middle/src/ty/context/tls.rs:90:5
 102:     0x7f6a1ab5355a - rustc_middle[cba44739a5552ea7]::ty::context::tls::with_related_context::<<rustc_query_impl[6e9d2145c92ff04a]::plumbing::QueryCtxt as rustc_query_system[30fcfc6fe94828a4]::query::QueryContext>::start_query<rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 1usize]>, rustc_query_system[30fcfc6fe94828a4]::query::plumbing::execute_job_non_incr<rustc_query_impl[6e9d2145c92ff04a]::DynamicConfig<rustc_data_structures[c7bdabbf4a181cf8]::vec_cache::VecCache<rustc_span[2234d008956aa855]::def_id::LocalDefId, rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 1usize]>, rustc_query_system[30fcfc6fe94828a4]::dep_graph::graph::DepNodeIndex>, false, false, false>, rustc_query_impl[6e9d2145c92ff04a]::plumbing::QueryCtxt>::{closure#0}>::{closure#0}, rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 1usize]>>
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_middle/src/ty/context/tls.rs:103:5
 103:     0x7f6a1ab5355a - <rustc_query_impl[6e9d2145c92ff04a]::plumbing::QueryCtxt as rustc_query_system[30fcfc6fe94828a4]::query::QueryContext>::start_query::<rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 1usize]>, rustc_query_system[30fcfc6fe94828a4]::query::plumbing::execute_job_non_incr<rustc_query_impl[6e9d2145c92ff04a]::DynamicConfig<rustc_data_structures[c7bdabbf4a181cf8]::vec_cache::VecCache<rustc_span[2234d008956aa855]::def_id::LocalDefId, rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 1usize]>, rustc_query_system[30fcfc6fe94828a4]::dep_graph::graph::DepNodeIndex>, false, false, false>, rustc_query_impl[6e9d2145c92ff04a]::plumbing::QueryCtxt>::{closure#0}>
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_query_impl/src/plumbing.rs:142:9
 104:     0x7f6a1ab5355a - rustc_query_system[30fcfc6fe94828a4]::query::plumbing::execute_job_non_incr::<rustc_query_impl[6e9d2145c92ff04a]::DynamicConfig<rustc_data_structures[c7bdabbf4a181cf8]::vec_cache::VecCache<rustc_span[2234d008956aa855]::def_id::LocalDefId, rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 1usize]>, rustc_query_system[30fcfc6fe94828a4]::dep_graph::graph::DepNodeIndex>, false, false, false>, rustc_query_impl[6e9d2145c92ff04a]::plumbing::QueryCtxt>
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_query_system/src/query/plumbing.rs:497:22
 105:     0x7f6a1ab5355a - rustc_query_system[30fcfc6fe94828a4]::query::plumbing::execute_job::<rustc_query_impl[6e9d2145c92ff04a]::DynamicConfig<rustc_data_structures[c7bdabbf4a181cf8]::vec_cache::VecCache<rustc_span[2234d008956aa855]::def_id::LocalDefId, rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 1usize]>, rustc_query_system[30fcfc6fe94828a4]::dep_graph::graph::DepNodeIndex>, false, false, false>, rustc_query_impl[6e9d2145c92ff04a]::plumbing::QueryCtxt, false>
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_query_system/src/query/plumbing.rs:433:9
 106:     0x7f6a1ab5355a - rustc_query_system[30fcfc6fe94828a4]::query::plumbing::try_execute_query::<rustc_query_impl[6e9d2145c92ff04a]::DynamicConfig<rustc_data_structures[c7bdabbf4a181cf8]::vec_cache::VecCache<rustc_span[2234d008956aa855]::def_id::LocalDefId, rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 1usize]>, rustc_query_system[30fcfc6fe94828a4]::dep_graph::graph::DepNodeIndex>, false, false, false>, rustc_query_impl[6e9d2145c92ff04a]::plumbing::QueryCtxt, false>
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_query_system/src/query/plumbing.rs:376:13
 107:     0x7f6a1ac54713 - rustc_query_system[30fcfc6fe94828a4]::query::plumbing::get_query_non_incr::<rustc_query_impl[6e9d2145c92ff04a]::DynamicConfig<rustc_data_structures[c7bdabbf4a181cf8]::vec_cache::VecCache<rustc_span[2234d008956aa855]::def_id::LocalDefId, rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 1usize]>, rustc_query_system[30fcfc6fe94828a4]::dep_graph::graph::DepNodeIndex>, false, false, false>, rustc_query_impl[6e9d2145c92ff04a]::plumbing::QueryCtxt>::{closure#0}
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_query_system/src/query/plumbing.rs:818:32
 108:     0x7f6a1ac54713 - stacker[363475d9565eafdb]::maybe_grow::<rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 1usize]>, rustc_query_system[30fcfc6fe94828a4]::query::plumbing::get_query_non_incr<rustc_query_impl[6e9d2145c92ff04a]::DynamicConfig<rustc_data_structures[c7bdabbf4a181cf8]::vec_cache::VecCache<rustc_span[2234d008956aa855]::def_id::LocalDefId, rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 1usize]>, rustc_query_system[30fcfc6fe94828a4]::dep_graph::graph::DepNodeIndex>, false, false, false>, rustc_query_impl[6e9d2145c92ff04a]::plumbing::QueryCtxt>::{closure#0}>
                               at /rust/deps/stacker-0.1.21/src/lib.rs:57:9
 109:     0x7f6a1ac54713 - rustc_data_structures[c7bdabbf4a181cf8]::stack::ensure_sufficient_stack::<rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 1usize]>, rustc_query_system[30fcfc6fe94828a4]::query::plumbing::get_query_non_incr<rustc_query_impl[6e9d2145c92ff04a]::DynamicConfig<rustc_data_structures[c7bdabbf4a181cf8]::vec_cache::VecCache<rustc_span[2234d008956aa855]::def_id::LocalDefId, rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 1usize]>, rustc_query_system[30fcfc6fe94828a4]::dep_graph::graph::DepNodeIndex>, false, false, false>, rustc_query_impl[6e9d2145c92ff04a]::plumbing::QueryCtxt>::{closure#0}>
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_data_structures/src/stack.rs:21:5
 110:     0x7f6a1ac54713 - rustc_query_system[30fcfc6fe94828a4]::query::plumbing::get_query_non_incr::<rustc_query_impl[6e9d2145c92ff04a]::DynamicConfig<rustc_data_structures[c7bdabbf4a181cf8]::vec_cache::VecCache<rustc_span[2234d008956aa855]::def_id::LocalDefId, rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 1usize]>, rustc_query_system[30fcfc6fe94828a4]::dep_graph::graph::DepNodeIndex>, false, false, false>, rustc_query_impl[6e9d2145c92ff04a]::plumbing::QueryCtxt>
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_query_system/src/query/plumbing.rs:818:5
 111:     0x7f6a1ac54713 - rustc_query_impl[6e9d2145c92ff04a]::query_impl::check_match::get_query_non_incr::__rust_end_short_backtrace
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_query_impl/src/plumbing.rs:605:26
 112:     0x7f6a19ef0559 - rustc_middle[cba44739a5552ea7]::query::inner::query_ensure_error_guaranteed::<rustc_data_structures[c7bdabbf4a181cf8]::vec_cache::VecCache<rustc_span[2234d008956aa855]::def_id::LocalDefId, rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 1usize]>, rustc_query_system[30fcfc6fe94828a4]::dep_graph::graph::DepNodeIndex>, ()>
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_middle/src/query/inner.rs:73:9
 113:     0x7f6a19fc51be - <rustc_middle[cba44739a5552ea7]::query::plumbing::TyCtxtEnsureOk>::check_match::<rustc_span[2234d008956aa855]::def_id::LocalDefId>
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_middle/src/query/plumbing.rs:176:9
 114:     0x7f6a19fc51be - rustc_mir_build[44524c81f9cc8bae]::builder::build_mir_inner_impl
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_mir_build/src/builder/mod.rs:73:37
 115:     0x7f6a1a1f3247 - <rustc_middle[cba44739a5552ea7]::ty::context::TyCtxt>::build_mir_inner_impl
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_middle/src/hooks/mod.rs:23:17
 116:     0x7f6a1a1f3247 - rustc_mir_transform[55d54b65210f287b]::mir_built
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_mir_transform/src/lib.rs:384:24
 117:     0x7f6a1aa8908e - rustc_query_impl[6e9d2145c92ff04a]::query_impl::mir_built::dynamic_query::{closure#2}::{closure#0}
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_query_impl/src/plumbing.rs:282:9
 118:     0x7f6a1aa8908e - rustc_query_impl[6e9d2145c92ff04a]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[6e9d2145c92ff04a]::query_impl::mir_built::dynamic_query::{closure#2}::{closure#0}, rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 8usize]>>
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_query_impl/src/plumbing.rs:552:18
 119:     0x7f6a1aeb3d6b - rustc_query_impl[6e9d2145c92ff04a]::query_impl::mir_built::dynamic_query::{closure#2}
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_query_impl/src/plumbing.rs:629:25
 120:     0x7f6a1aeb3d6b - <rustc_query_impl[6e9d2145c92ff04a]::query_impl::mir_built::dynamic_query::{closure#2} as core[23bea9c71ca958a1]::ops::function::FnOnce<(rustc_middle[cba44739a5552ea7]::ty::context::TyCtxt, rustc_span[2234d008956aa855]::def_id::LocalDefId)>>::call_once
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/library/core/src/ops/function.rs:250:5
 121:     0x7f6a1ab4991a - <rustc_query_impl[6e9d2145c92ff04a]::DynamicConfig<rustc_data_structures[c7bdabbf4a181cf8]::vec_cache::VecCache<rustc_hir_id[42913d7296abca4d]::OwnerId, rustc_middle[cba44739a5552ea7]::query::erase::Erased<[u8; 8usize]>, rustc_query_system[30fcfc6fe94828a4]::dep_graph::graph::DepNodeIndex>, false, false, false> as rustc_query_system[30fcfc6fe94828a4]::query::config::QueryConfig<rustc_query_impl[6e9d2145c92ff04a]::plumbing::QueryCtxt>>::compute
                               at /rustc-dev/5c49c4f7c8393c861b849441d27f5d40e0f1e33b/compiler/rustc_query_impl/src/lib.rs:116:9
 

<snip> 

433:     0x7f6a1589698b - <unknown>
 434:     0x7f6a1591a9cc - <unknown>
 435:                0x0 - <unknown>

error: 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: please make sure that you have updated to the latest nightly

note: rustc 1.95.0-nightly (5c49c4f7c 2026-01-20) running on x86_64-unknown-linux-gnu

note: compiler flags: -Z next-solver=globally -Z dump-mir-dir=dir

query stack during panic:
#0 [typeck] type-checking `Access::list`
#1 [check_match] match-checking `Access::list`
#2 [mir_built] building MIR for `Access::list`
#3 [has_ffi_unwind_calls] checking if `Access::list` contains FFI-unwind calls
#4 [mir_promoted] promoting constants in MIR for `Access::list`
#5 [mir_borrowck] borrow-checking `Access::list`
#6 [type_of_opaque] computing type of opaque `Access::list::{opaque#0}`
#7 [type_of] computing type of `Access::list::{opaque#0}`
#8 [check_well_formed] checking that `Access::list::{opaque#0}` is well-formed
#9 [check_type_wf] checking that types are well-formed
#10 [analysis] running analysis passes on crate `mvce`
end of query stack
error: aborting due to 2 previous errors

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

@rustbot label +WG-trait-system-refactor

[matthiaskrgr]

//@compile-flags: --edition=2024 -Znext-solver=globally
pub trait Foo {
    pub async fn new() -> (Self, impl Future) {
        (Manager, async {})
    }
}