CI run of code that triggers #105573

[peter-lyons-kehl]

This PR is NOT a fix for #105573. Instead, it uses Rust CI to build code that triggered #105573 for me locally. (As per https://rustc-dev-guide.rust-lang.org/contributing.html#ci: "perfectly fine (and even encouraged!) to use the CI to test your changes if it can help your productivity").

Please don't review this PR. If possible, assign it back to me, or label it somehow so it won't waste time of reviewers.
Thank you in advance.

r? peter-kehl

[rustbot]

Hey! It looks like you've submitted a new PR for the library teams!

If this PR contains changes to any rust-lang/rust public library APIs then please comment with @rustbot label +T-libs-api -T-libs to tag it appropriately. If this PR contains changes to any unstable APIs please edit the PR description to add a link to the relevant API Change Proposal or create one if you haven't already. If you're unsure where your change falls no worries, just leave it as is and the reviewer will take a look and make a decision to forward on if necessary.

Examples of T-libs-api changes:

• Stabilizing library features
• Introducing insta-stable changes such as new implementations of existing stable traits on existing stable types
• Introducing new or changing existing unstable library APIs (excluding permanently unstable features / features without a tracking issue)
• Changing public documentation in ways that create new stability guarantees
• Changing observable runtime behavior of library APIs

This PR changes MIR

cc @oli-obk, @RalfJung, @JakobDegen, @davidtwco, @celinval, @vakaras

Some changes occurred in src/librustdoc/clean/types.rs

cc @camelid

[JakobDegen]

Fyi, r? ghost will prevent the PR from being assigned to anyone, and you can mark it as a draft to make it more obvious what it's for

[Dylan-DPC]

r? @ghost

[rustbot]

Failed to set assignee to ghost: invalid assignee

Note: Only org members, users with write permissions, or people who have commented on the PR may be assigned.

[Dylan-DPC]

r? ghost

[rust-log-analyzer]

The job mingw-check failed! Check out the build log: (web) (plain)

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

    Checking alloc v0.0.0 (/checkout/library/alloc)
    Checking cfg-if v1.0.0
    Checking adler v1.0.2
    Checking rustc-demangle v0.1.21
error: internal compiler error: compiler/rustc_middle/src/ty/subst.rs:768:9: const parameter `COOP_PREFERRED/#2` (Const { ty: bool, kind: Param(COOP_PREFERRED/#2) }/2) out of range when substituting substs=[_, alloc::Global]

thread 'rustc' panicked at 'Box<dyn Any>', /rustc/e080cc5a659fb760c0bc561b722a790dad35b5e1/compiler/rustc_errors/src/lib.rs:1519:9
stack backtrace:
   0:     0x7f28c073e340 - std::backtrace_rs::backtrace::libunwind::trace::h2df8645d586d9354
                               at /rustc/e080cc5a659fb760c0bc561b722a790dad35b5e1/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5
   1:     0x7f28c073e340 - std::backtrace_rs::backtrace::trace_unsynchronized::h8ccc7432adfc32a8
                               at /rustc/e080cc5a659fb760c0bc561b722a790dad35b5e1/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
   2:     0x7f28c073e340 - std::sys_common::backtrace::_print_fmt::h6b5315b3e6c5b112
                               at /rustc/e080cc5a659fb760c0bc561b722a790dad35b5e1/library/std/src/sys_common/backtrace.rs:65:5
   3:     0x7f28c073e340 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h1196a40d5ac35d56
                               at /rustc/e080cc5a659fb760c0bc561b722a790dad35b5e1/library/std/src/sys_common/backtrace.rs:44:22
   4:     0x7f28c0c2898e - core::fmt::write::hb5395aee3db34e90
                               at /rustc/e080cc5a659fb760c0bc561b722a790dad35b5e1/library/core/src/fmt/mod.rs:1209:17
   5:     0x7f28c07320f5 - std::io::Write::write_fmt::hf1b72fac8a3acb27
                               at /rustc/e080cc5a659fb760c0bc561b722a790dad35b5e1/library/std/src/io/mod.rs:1682:15
   6:     0x7f28c073e105 - std::sys_common::backtrace::_print::h805a3d8a840d4dd9
                               at /rustc/e080cc5a659fb760c0bc561b722a790dad35b5e1/library/std/src/sys_common/backtrace.rs:47:5
   7:     0x7f28c073e105 - std::sys_common::backtrace::print::h9dc5789e99bcd646
                               at /rustc/e080cc5a659fb760c0bc561b722a790dad35b5e1/library/std/src/sys_common/backtrace.rs:34:9
   8:     0x7f28c074045f - std::panicking::default_hook::{{closure}}::h79c2a100d70e0a69
                               at /rustc/e080cc5a659fb760c0bc561b722a790dad35b5e1/library/std/src/panicking.rs:267:22
   9:     0x7f28c074019a - std::panicking::default_hook::h9d54a6e2e183091b
                               at /rustc/e080cc5a659fb760c0bc561b722a790dad35b5e1/library/std/src/panicking.rs:286:9
  10:     0x7f28bfa06164 - rustc_driver[2731657a57c33a9f]::DEFAULT_HOOK::{closure#0}::{closure#0}
  11:     0x7f28c0740c49 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h22fa2a084fbafa5c
                               at /rustc/e080cc5a659fb760c0bc561b722a790dad35b5e1/library/alloc/src/boxed.rs:2001:9
  12:     0x7f28c0740c49 - std::panicking::rust_panic_with_hook::h66c09c3756b56830
                               at /rustc/e080cc5a659fb760c0bc561b722a790dad35b5e1/library/std/src/panicking.rs:692:13
  13:     0x7f28bfe2eef1 - std[6a238fb43aa4c274]::panicking::begin_panic::<rustc_errors[8289f13c10dc8783]::ExplicitBug>::{closure#0}
  14:     0x7f28bfe2ea56 - std[6a238fb43aa4c274]::sys_common::backtrace::__rust_end_short_backtrace::<std[6a238fb43aa4c274]::panicking::begin_panic<rustc_errors[8289f13c10dc8783]::ExplicitBug>::{closure#0}, !>
  15:     0x7f28bfe940a6 - std[6a238fb43aa4c274]::panicking::begin_panic::<rustc_errors[8289f13c10dc8783]::ExplicitBug>
  16:     0x7f28bfe2da26 - std[6a238fb43aa4c274]::panic::panic_any::<rustc_errors[8289f13c10dc8783]::ExplicitBug>
  17:     0x7f28bfe2d93d - <rustc_errors[8289f13c10dc8783]::HandlerInner>::bug::<&alloc[5aec1d928cb65a40]::string::String>
  18:     0x7f28bfe2d3b0 - <rustc_errors[8289f13c10dc8783]::Handler>::bug::<&alloc[5aec1d928cb65a40]::string::String>
  19:     0x7f28bfef7bfd - rustc_middle[1e440ea759c2f365]::ty::context::tls::with_context_opt::<rustc_middle[1e440ea759c2f365]::ty::context::tls::with_opt<rustc_middle[1e440ea759c2f365]::util::bug::opt_span_bug_fmt<rustc_span[85bea1f81190796e]::span_encoding::Span>::{closure#0}, ()>::{closure#0}, ()>
  20:     0x7f28bfef9db6 - rustc_middle[1e440ea759c2f365]::util::bug::opt_span_bug_fmt::<rustc_span[85bea1f81190796e]::span_encoding::Span>
  21:     0x7f28bdc884e3 - rustc_middle[1e440ea759c2f365]::util::bug::bug_fmt
  22:     0x7f28bfee08e2 - <rustc_middle[1e440ea759c2f365]::ty::subst::SubstFolder>::const_param_out_of_range
  23:     0x7f28bda65d8d - <rustc_middle[1e440ea759c2f365]::ty::subst::SubstFolder as rustc_middle[1e440ea759c2f365]::ty::fold::TypeFolder>::fold_const
  24:     0x7f28bda675dc - <&rustc_middle[1e440ea759c2f365]::ty::list::List<rustc_middle[1e440ea759c2f365]::ty::subst::GenericArg> as rustc_middle[1e440ea759c2f365]::ty::fold::TypeFoldable>::try_fold_with::<rustc_middle[1e440ea759c2f365]::ty::subst::SubstFolder>
  25:     0x7f28bda67f1c - <rustc_middle[1e440ea759c2f365]::ty::consts::Const as rustc_middle[1e440ea759c2f365]::ty::fold::TypeSuperFoldable>::super_fold_with::<rustc_middle[1e440ea759c2f365]::ty::subst::SubstFolder>
  26:     0x7f28bda63966 - <rustc_middle[1e440ea759c2f365]::ty::subst::SubstFolder as rustc_middle[1e440ea759c2f365]::ty::fold::FallibleTypeFolder>::try_fold_ty
  27:     0x7f28bfedf16f - <rustc_middle[1e440ea759c2f365]::ty::subst::GenericArg as rustc_middle[1e440ea759c2f365]::ty::fold::TypeFoldable>::try_fold_with::<rustc_middle[1e440ea759c2f365]::ty::subst::SubstFolder>
  28:     0x7f28bdaf696c - <rustc_middle[1e440ea759c2f365]::ty::generics::GenericPredicates>::instantiate_into
  29:     0x7f28bdc615fc - <rustc_trait_selection[429aeeaf97ad5f33]::traits::wf::WfPredicates>::nominal_obligations_inner
  30:     0x7f28bdc5de9b - <rustc_trait_selection[429aeeaf97ad5f33]::traits::wf::WfPredicates>::compute
  31:     0x7f28be9164b3 - rustc_trait_selection[429aeeaf97ad5f33]::traits::wf::obligations
  32:     0x7f28be463b35 - <rustc_trait_selection[429aeeaf97ad5f33]::traits::select::SelectionContext>::evaluate_predicates_recursively::<alloc[5aec1d928cb65a40]::vec::into_iter::IntoIter<rustc_infer[eb3d8a9fc270db4a]::traits::Obligation<rustc_middle[1e440ea759c2f365]::ty::Predicate>>>
  33:     0x7f28be45e996 - <rustc_infer[eb3d8a9fc270db4a]::infer::InferCtxt>::probe::<core[6f75f940baff7b16]::result::Result<rustc_middle[1e440ea759c2f365]::traits::select::EvaluationResult, rustc_middle[1e440ea759c2f365]::traits::select::OverflowError>, <rustc_trait_selection[429aeeaf97ad5f33]::traits::select::SelectionContext>::evaluation_probe<<rustc_trait_selection[429aeeaf97ad5f33]::traits::select::SelectionContext>::evaluate_candidate::{closure#0}::{closure#0}>::{closure#0}>
  34:     0x7f28be45a6e2 - <rustc_trait_selection[429aeeaf97ad5f33]::traits::select::SelectionContext>::candidate_from_obligation_no_cache
  35:     0x7f28bdc64094 - <rustc_trait_selection[429aeeaf97ad5f33]::traits::select::SelectionContext>::select
  36:     0x7f28be210789 - rustc_trait_selection[429aeeaf97ad5f33]::traits::project::opt_normalize_projection_type
  37:     0x7f28be1c7824 - <rustc_infer[eb3d8a9fc270db4a]::infer::InferCtxt>::commit_if_ok::<rustc_trait_selection[429aeeaf97ad5f33]::traits::project::ProjectAndUnifyResult, rustc_infer[eb3d8a9fc270db4a]::traits::project::MismatchedProjectionTypes, rustc_trait_selection[429aeeaf97ad5f33]::traits::project::poly_project_and_unify_type::{closure#0}>
  38:     0x7f28be52785d - <rustc_trait_selection[429aeeaf97ad5f33]::traits::select::SelectionContext>::evaluate_predicate_recursively
  39:     0x7f28bef3372c - <rustc_infer[eb3d8a9fc270db4a]::infer::InferCtxt>::probe::<core[6f75f940baff7b16]::result::Result<rustc_middle[1e440ea759c2f365]::traits::select::EvaluationResult, rustc_middle[1e440ea759c2f365]::traits::select::OverflowError>, <rustc_trait_selection[429aeeaf97ad5f33]::traits::select::SelectionContext>::evaluation_probe<<rustc_trait_selection[429aeeaf97ad5f33]::traits::select::SelectionContext>::evaluate_root_obligation::{closure#0}>::{closure#0}>
  40:     0x7f28bef4b769 - <core[6f75f940baff7b16]::iter::adapters::copied::Copied<core[6f75f940baff7b16]::slice::iter::Iter<rustc_middle[1e440ea759c2f365]::ty::Predicate>> as core[6f75f940baff7b16]::iter::traits::iterator::Iterator>::try_fold::<(), &mut core[6f75f940baff7b16]::iter::adapters::map::map_try_fold<rustc_middle[1e440ea759c2f365]::ty::Predicate, rustc_middle[1e440ea759c2f365]::ty::Predicate, (), core[6f75f940baff7b16]::ops::control_flow::ControlFlow<rustc_infer[eb3d8a9fc270db4a]::traits::Obligation<rustc_middle[1e440ea759c2f365]::ty::Predicate>>, rustc_trait_selection[429aeeaf97ad5f33]::traits::coherence::implicit_negative::{closure#0}, core[6f75f940baff7b16]::iter::adapters::map::map_try_fold<rustc_middle[1e440ea759c2f365]::ty::Predicate, rustc_infer[eb3d8a9fc270db4a]::traits::Obligation<rustc_middle[1e440ea759c2f365]::ty::Predicate>, (), core[6f75f940baff7b16]::ops::control_flow::ControlFlow<rustc_infer[eb3d8a9fc270db4a]::traits::Obligation<rustc_middle[1e440ea759c2f365]::ty::Predicate>>, rustc_trait_selection[429aeeaf97ad5f33]::traits::coherence::implicit_negative::{closure#1}, core[6f75f940baff7b16]::iter::traits::iterator::Iterator::find::check<rustc_infer[eb3d8a9fc270db4a]::traits::Obligation<rustc_middle[1e440ea759c2f365]::ty::Predicate>, &mut rustc_trait_selection[429aeeaf97ad5f33]::traits::coherence::implicit_negative::{closure#2}>::{closure#0}>::{closure#0}>::{closure#0}, core[6f75f940baff7b16]::ops::control_flow::ControlFlow<rustc_infer[eb3d8a9fc270db4a]::traits::Obligation<rustc_middle[1e440ea759c2f365]::ty::Predicate>>>
  41:     0x7f28bef4b503 - <core[6f75f940baff7b16]::iter::adapters::chain::Chain<core[6f75f940baff7b16]::iter::adapters::copied::Copied<core[6f75f940baff7b16]::slice::iter::Iter<rustc_middle[1e440ea759c2f365]::ty::Predicate>>, alloc[5aec1d928cb65a40]::vec::into_iter::IntoIter<rustc_middle[1e440ea759c2f365]::ty::Predicate>> as core[6f75f940baff7b16]::iter::traits::iterator::Iterator>::try_fold::<(), core[6f75f940baff7b16]::iter::adapters::map::map_try_fold<rustc_middle[1e440ea759c2f365]::ty::Predicate, rustc_middle[1e440ea759c2f365]::ty::Predicate, (), core[6f75f940baff7b16]::ops::control_flow::ControlFlow<rustc_infer[eb3d8a9fc270db4a]::traits::Obligation<rustc_middle[1e440ea759c2f365]::ty::Predicate>>, rustc_trait_selection[429aeeaf97ad5f33]::traits::coherence::implicit_negative::{closure#0}, core[6f75f940baff7b16]::iter::adapters::map::map_try_fold<rustc_middle[1e440ea759c2f365]::ty::Predicate, rustc_infer[eb3d8a9fc270db4a]::traits::Obligation<rustc_middle[1e440ea759c2f365]::ty::Predicate>, (), core[6f75f940baff7b16]::ops::control_flow::ControlFlow<rustc_infer[eb3d8a9fc270db4a]::traits::Obligation<rustc_middle[1e440ea759c2f365]::ty::Predicate>>, rustc_trait_selection[429aeeaf97ad5f33]::traits::coherence::implicit_negative::{closure#1}, core[6f75f940baff7b16]::iter::traits::iterator::Iterator::find::check<rustc_infer[eb3d8a9fc270db4a]::traits::Obligation<rustc_middle[1e440ea759c2f365]::ty::Predicate>, &mut rustc_trait_selection[429aeeaf97ad5f33]::traits::coherence::implicit_negative::{closure#2}>::{closure#0}>::{closure#0}>::{closure#0}, core[6f75f940baff7b16]::ops::control_flow::ControlFlow<rustc_infer[eb3d8a9fc270db4a]::traits::Obligation<rustc_middle[1e440ea759c2f365]::ty::Predicate>>>
  42:     0x7f28bed8f467 - rustc_trait_selection[429aeeaf97ad5f33]::traits::coherence::overlap_within_probe
  43:     0x7f28bed8e8d3 - <rustc_infer[eb3d8a9fc270db4a]::infer::InferCtxt>::probe_maybe_skip_leak_check::<core[6f75f940baff7b16]::option::Option<rustc_trait_selection[429aeeaf97ad5f33]::traits::coherence::OverlapResult>, rustc_trait_selection[429aeeaf97ad5f33]::traits::coherence::overlap::{closure#0}>
  44:     0x7f28bed8bb8c - <rustc_middle[1e440ea759c2f365]::traits::specialization_graph::Children as rustc_trait_selection[429aeeaf97ad5f33]::traits::specialize::specialization_graph::ChildrenExt>::insert
  45:     0x7f28bed88cd3 - <rustc_middle[1e440ea759c2f365]::traits::specialization_graph::Graph as rustc_trait_selection[429aeeaf97ad5f33]::traits::specialize::specialization_graph::GraphExt>::insert
  46:     0x7f28bed86e3d - rustc_trait_selection[429aeeaf97ad5f33]::traits::specialize::specialization_graph_provider
  47:     0x7f28bed433f8 - rustc_query_system[9e10ef674197eb88]::query::plumbing::try_execute_query::<rustc_query_impl[94dddaa624b13a2e]::plumbing::QueryCtxt, rustc_query_system[9e10ef674197eb88]::query::caches::ArenaCache<rustc_span[85bea1f81190796e]::def_id::DefId, rustc_middle[1e440ea759c2f365]::traits::specialization_graph::Graph>>
  48:     0x7f28becace5e - rustc_query_system[9e10ef674197eb88]::query::plumbing::get_query::<rustc_query_impl[94dddaa624b13a2e]::queries::specialization_graph_of, rustc_query_impl[94dddaa624b13a2e]::plumbing::QueryCtxt>
  49:     0x7f28bf07f93b - rustc_hir_analysis[9182be28d676711c]::coherence::coherent_trait
  50:     0x7f28be3c5dc8 - rustc_query_system[9e10ef674197eb88]::query::plumbing::try_execute_query::<rustc_query_impl[94dddaa624b13a2e]::plumbing::QueryCtxt, rustc_query_system[9e10ef674197eb88]::query::caches::DefaultCache<rustc_span[85bea1f81190796e]::def_id::DefId, ()>>
  51:     0x7f28bed70c65 - rustc_query_system[9e10ef674197eb88]::query::plumbing::get_query::<rustc_query_impl[94dddaa624b13a2e]::queries::coherent_trait, rustc_query_impl[94dddaa624b13a2e]::plumbing::QueryCtxt>
  52:     0x7f28bde36fa2 - <rustc_session[638750f383577479]::session::Session>::track_errors::<rustc_hir_analysis[9182be28d676711c]::check_crate::{closure#3}, ()>
  53:     0x7f28bde33003 - rustc_hir_analysis[9182be28d676711c]::check_crate
  54:     0x7f28bde32cdb - rustc_interface[e10a04643064e0c3]::passes::analysis
  55:     0x7f28bf26ecb4 - rustc_query_system[9e10ef674197eb88]::query::plumbing::try_execute_query::<rustc_query_impl[94dddaa624b13a2e]::plumbing::QueryCtxt, rustc_query_system[9e10ef674197eb88]::query::caches::DefaultCache<(), core[6f75f940baff7b16]::result::Result<(), rustc_errors[8289f13c10dc8783]::ErrorGuaranteed>>>
  56:     0x7f28bf26e9b7 - rustc_query_system[9e10ef674197eb88]::query::plumbing::get_query::<rustc_query_impl[94dddaa624b13a2e]::queries::analysis, rustc_query_impl[94dddaa624b13a2e]::plumbing::QueryCtxt>
  57:     0x7f28bedb16fd - <rustc_interface[e10a04643064e0c3]::passes::QueryContext>::enter::<rustc_driver[2731657a57c33a9f]::run_compiler::{closure#1}::{closure#2}::{closure#3}, core[6f75f940baff7b16]::result::Result<(), rustc_errors[8289f13c10dc8783]::ErrorGuaranteed>>
  58:     0x7f28bedadbaf - <rustc_interface[e10a04643064e0c3]::interface::Compiler>::enter::<rustc_driver[2731657a57c33a9f]::run_compiler::{closure#1}::{closure#2}, core[6f75f940baff7b16]::result::Result<core[6f75f940baff7b16]::option::Option<rustc_interface[e10a04643064e0c3]::queries::Linker>, rustc_errors[8289f13c10dc8783]::ErrorGuaranteed>>
  59:     0x7f28beda56f2 - rustc_span[85bea1f81190796e]::with_source_map::<core[6f75f940baff7b16]::result::Result<(), rustc_errors[8289f13c10dc8783]::ErrorGuaranteed>, rustc_interface[e10a04643064e0c3]::interface::run_compiler<core[6f75f940baff7b16]::result::Result<(), rustc_errors[8289f13c10dc8783]::ErrorGuaranteed>, rustc_driver[2731657a57c33a9f]::run_compiler::{closure#1}>::{closure#0}::{closure#1}>
  60:     0x7f28beda51e9 - <scoped_tls[df6a59750083ca9d]::ScopedKey<rustc_span[85bea1f81190796e]::SessionGlobals>>::set::<rustc_interface[e10a04643064e0c3]::interface::run_compiler<core[6f75f940baff7b16]::result::Result<(), rustc_errors[8289f13c10dc8783]::ErrorGuaranteed>, rustc_driver[2731657a57c33a9f]::run_compiler::{closure#1}>::{closure#0}, core[6f75f940baff7b16]::result::Result<(), rustc_errors[8289f13c10dc8783]::ErrorGuaranteed>>
  61:     0x7f28beda47f8 - std[6a238fb43aa4c274]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[e10a04643064e0c3]::util::run_in_thread_pool_with_globals<rustc_interface[e10a04643064e0c3]::interface::run_compiler<core[6f75f940baff7b16]::result::Result<(), rustc_errors[8289f13c10dc8783]::ErrorGuaranteed>, rustc_driver[2731657a57c33a9f]::run_compiler::{closure#1}>::{closure#0}, core[6f75f940baff7b16]::result::Result<(), rustc_errors[8289f13c10dc8783]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[6f75f940baff7b16]::result::Result<(), rustc_errors[8289f13c10dc8783]::ErrorGuaranteed>>
  62:     0x7f28beda451c - <<std[6a238fb43aa4c274]::thread::Builder>::spawn_unchecked_<rustc_interface[e10a04643064e0c3]::util::run_in_thread_pool_with_globals<rustc_interface[e10a04643064e0c3]::interface::run_compiler<core[6f75f940baff7b16]::result::Result<(), rustc_errors[8289f13c10dc8783]::ErrorGuaranteed>, rustc_driver[2731657a57c33a9f]::run_compiler::{closure#1}>::{closure#0}, core[6f75f940baff7b16]::result::Result<(), rustc_errors[8289f13c10dc8783]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[6f75f940baff7b16]::result::Result<(), rustc_errors[8289f13c10dc8783]::ErrorGuaranteed>>::{closure#1} as core[6f75f940baff7b16]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
  63:     0x7f28c0747bc3 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h23aa6e7db304ed51
                               at /rustc/e080cc5a659fb760c0bc561b722a790dad35b5e1/library/alloc/src/boxed.rs:1987:9
  64:     0x7f28c0747bc3 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h0482f1835c06f38d
                               at /rustc/e080cc5a659fb760c0bc561b722a790dad35b5e1/library/alloc/src/boxed.rs:1987:9
  65:     0x7f28c0747bc3 - std::sys::unix::thread::Thread::new::thread_start::h5213f0bce91e8f3e
                               at /rustc/e080cc5a659fb760c0bc561b722a790dad35b5e1/library/std/src/sys/unix/thread.rs:108:17
  66:     0x7f28bc30f6db - start_thread
  67:     0x7f28bc03861f - clone
  68:                0x0 - <unknown>
note: the compiler unexpectedly panicked. this is a bug.

note: we would appreciate a bug report: https://github.com/rust-lang/rust/issues/new?labels=C-bug%2C+I-ICE%2C+T-compiler&template=ice.md


note: rustc 1.66.0-beta.1 (e080cc5a6 2022-11-01) running on x86_64-unknown-linux-gnu

note: compiler flags: --crate-type lib -C opt-level=3 -C embed-bitcode=no -C debuginfo=0 -Z unstable-options -C symbol-mangling-version=legacy -Z unstable-options -Z unstable-options -Z macro-backtrace -C link-args=-Wl,-z,origin -C link-args=-Wl,-rpath,$ORIGIN/../lib -C split-debuginfo=off -C prefer-dynamic -Z crate-attr=doc(html_root_url="https://doc.rust-lang.org/nightly/") -Z binary-dep-depinfo -Z force-unstable-if-unmarked
note: some of the compiler flags provided by cargo are hidden

query stack during panic:
query stack during panic:
#0 [specialization_graph_of] building specialization graph of trait `collections::SpecExtend`
#1 [coherent_trait] coherence checking all impls of trait `collections::SpecExtend`
#2 [analysis] running analysis passes on this crate
error: could not compile `alloc`
Build completed unsuccessfully in 0:02:31

[peter-lyons-kehl]

Closing this PR. I'll create a new one, as draft.