ICE: missing associated_item_or_field_def_ids for DefId

[matthiaskrgr]

snippet:

fn main() -> dyn Iterator + ?Iterator::advance_by(usize) {
    todo!()
}

Version information

rustc 1.87.0-nightly (e0be1a026 2025-02-24)
binary: rustc
commit-hash: e0be1a02626abef2878cb7f4aaef7ae409477112
commit-date: 2025-02-24
host: x86_64-unknown-linux-gnu
release: 1.87.0-nightly
LLVM version: 20.1.0

Possibly related line of code:

rust/compiler/rustc_metadata/src/rmeta/decoder.rs

Lines 973 to 985 in e0be1a0

	self.target_modifiers.decode(metadata)
	}
	}
	impl<'a> CrateMetadataRef<'a> {
	fn missing(self, descr: &str, id: DefIndex) -> ! {
	bug!("missing `{descr}` for {:?}", self.local_def_id(id))
	}
	fn raw_proc_macro(self, id: DefIndex) -> &'a ProcMacro {
	// DefIndex's in root.proc_macro_data have a one-to-one correspondence
	// with items in 'raw_proc_macros'.
	let pos = self

Command:
/home/matthias/.rustup/toolchains/master/bin/rustc

Program output

error[E0658]: `?Trait` is not permitted in trait object types
 --> /tmp/icemaker_global_tempdir.GmrobLH26bcS/rustc_testrunner_tmpdir_reporting.71dArq3UUixW/mvce.rs:1:29
  |
1 | fn main() -> dyn Iterator + ?Iterator::advance_by(usize) {
  |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  |
  = help: add `#![feature(more_maybe_bounds)]` to the crate attributes to enable
  = note: this compiler was built on 2025-02-24; consider upgrading it if it is out of date

error[E0404]: expected trait, found associated function `Iterator::advance_by`
 --> /tmp/icemaker_global_tempdir.GmrobLH26bcS/rustc_testrunner_tmpdir_reporting.71dArq3UUixW/mvce.rs:1:30
  |
1 | fn main() -> dyn Iterator + ?Iterator::advance_by(usize) {
  |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^ not a trait

error: internal compiler error: compiler/rustc_metadata/src/rmeta/decoder.rs:979:9: missing `associated_item_or_field_def_ids` for DefId(2:9144 ~ core[90b8]::iter::traits::iterator::Iterator::advance_by)


thread 'rustc' panicked at compiler/rustc_metadata/src/rmeta/decoder.rs:979:9:
Box<dyn Any>
stack backtrace:
   0:     0x75161697c124 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hd9ec0f3056d90740
   1:     0x75161701632c - core::fmt::write::h0d8376a499e0871d
   2:     0x751618095a51 - std::io::Write::write_fmt::hf688cf9460f28ca2
   3:     0x75161697bf82 - std::sys::backtrace::BacktraceLock::print::h4ca5e45855090a7a
   4:     0x75161697e78e - std::panicking::default_hook::{{closure}}::h181472065423d3d9
   5:     0x75161697e364 - std::panicking::default_hook::h68110b3f28030711
   6:     0x751615adda87 - std[6ca4657e2107f847]::panicking::update_hook::<alloc[a2d81cc64f826ec1]::boxed::Box<rustc_driver_impl[3593385ee6d6136e]::install_ice_hook::{closure#1}>>::{closure#0}
   7:     0x75161697f003 - std::panicking::rust_panic_with_hook::h0802d830fc76ae3f
   8:     0x751615b19b81 - std[6ca4657e2107f847]::panicking::begin_panic::<rustc_errors[db683afb8460ed88]::ExplicitBug>::{closure#0}
   9:     0x751615b0df96 - std[6ca4657e2107f847]::sys::backtrace::__rust_end_short_backtrace::<std[6ca4657e2107f847]::panicking::begin_panic<rustc_errors[db683afb8460ed88]::ExplicitBug>::{closure#0}, !>
  10:     0x751615b0a919 - std[6ca4657e2107f847]::panicking::begin_panic::<rustc_errors[db683afb8460ed88]::ExplicitBug>
  11:     0x751615b23581 - <rustc_errors[db683afb8460ed88]::diagnostic::BugAbort as rustc_errors[db683afb8460ed88]::diagnostic::EmissionGuarantee>::emit_producing_guarantee
  12:     0x7516160f3026 - rustc_middle[d80101abd097f72b]::util::bug::opt_span_bug_fmt::<rustc_span[74cd7f09f1ca77f9]::span_encoding::Span>::{closure#0}
  13:     0x7516160dc58a - rustc_middle[d80101abd097f72b]::ty::context::tls::with_opt::<rustc_middle[d80101abd097f72b]::util::bug::opt_span_bug_fmt<rustc_span[74cd7f09f1ca77f9]::span_encoding::Span>::{closure#0}, !>::{closure#0}
  14:     0x7516160dc3fb - rustc_middle[d80101abd097f72b]::ty::context::tls::with_context_opt::<rustc_middle[d80101abd097f72b]::ty::context::tls::with_opt<rustc_middle[d80101abd097f72b]::util::bug::opt_span_bug_fmt<rustc_span[74cd7f09f1ca77f9]::span_encoding::Span>::{closure#0}, !>::{closure#0}, !>
  15:     0x7516144ccbc0 - rustc_middle[d80101abd097f72b]::util::bug::bug_fmt
  16:     0x751616058fcf - <rustc_metadata[48f9dac3cd275b9a]::creader::CrateMetadataRef>::missing
  17:     0x7516172c1962 - rustc_metadata[48f9dac3cd275b9a]::rmeta::decoder::cstore_impl::provide_extern::associated_item_def_ids
  18:     0x7516172c12e3 - rustc_query_impl[a3e1d005031b8bb]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[a3e1d005031b8bb]::query_impl::associated_item_def_ids::dynamic_query::{closure#2}::{closure#0}, rustc_middle[d80101abd097f72b]::query::erase::Erased<[u8; 16usize]>>
  19:     0x7516172c1289 - <rustc_query_impl[a3e1d005031b8bb]::query_impl::associated_item_def_ids::dynamic_query::{closure#2} as core[90b8396b6039faa7]::ops::function::FnOnce<(rustc_middle[d80101abd097f72b]::ty::context::TyCtxt, rustc_span[74cd7f09f1ca77f9]::def_id::DefId)>>::call_once
  20:     0x7516172bf74f - rustc_query_system[de6c792d11e5b678]::query::plumbing::try_execute_query::<rustc_query_impl[a3e1d005031b8bb]::DynamicConfig<rustc_query_system[de6c792d11e5b678]::query::caches::DefIdCache<rustc_middle[d80101abd097f72b]::query::erase::Erased<[u8; 16usize]>>, false, false, false>, rustc_query_impl[a3e1d005031b8bb]::plumbing::QueryCtxt, false>
  21:     0x7516172bf1e1 - rustc_query_impl[a3e1d005031b8bb]::query_impl::associated_item_def_ids::get_query_non_incr::__rust_end_short_backtrace
  22:     0x7516179ec7a1 - rustc_ty_utils[b051470940286a68]::assoc::associated_items
  23:     0x7516179ec634 - rustc_query_impl[a3e1d005031b8bb]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[a3e1d005031b8bb]::query_impl::associated_items::dynamic_query::{closure#2}::{closure#0}, rustc_middle[d80101abd097f72b]::query::erase::Erased<[u8; 8usize]>>
  24:     0x75161711b272 - rustc_query_system[de6c792d11e5b678]::query::plumbing::try_execute_query::<rustc_query_impl[a3e1d005031b8bb]::DynamicConfig<rustc_query_system[de6c792d11e5b678]::query::caches::DefIdCache<rustc_middle[d80101abd097f72b]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[a3e1d005031b8bb]::plumbing::QueryCtxt, false>
  25:     0x75161711c4a8 - rustc_query_impl[a3e1d005031b8bb]::query_impl::associated_items::get_query_non_incr::__rust_end_short_backtrace
  26:     0x751617858458 - rustc_middle[d80101abd097f72b]::query::plumbing::query_get_at::<rustc_query_system[de6c792d11e5b678]::query::caches::DefIdCache<rustc_middle[d80101abd097f72b]::query::erase::Erased<[u8; 8usize]>>>
  27:     0x751615c22fcf - <core[90b8396b6039faa7]::iter::adapters::flatten::FlattenCompat<_, _> as core[90b8396b6039faa7]::iter::traits::iterator::Iterator>::fold::flatten::<core[90b8396b6039faa7]::iter::adapters::filter_map::FilterMap<core[90b8396b6039faa7]::slice::iter::Iter<rustc_hir[6e224bfe6d508dae]::hir::AssocItemConstraint>, <dyn rustc_hir_analysis[da7d2587c78354bd]::hir_ty_lowering::HirTyLowerer>::check_for_required_assoc_tys::{closure#1}::{closure#0}>, (), core[90b8396b6039faa7]::iter::traits::iterator::Iterator::for_each::call<(rustc_span[74cd7f09f1ca77f9]::symbol::Symbol, &rustc_middle[d80101abd097f72b]::ty::assoc::AssocItem), <hashbrown[ed219d29d174ff2d]::map::HashMap<rustc_span[74cd7f09f1ca77f9]::symbol::Symbol, &rustc_middle[d80101abd097f72b]::ty::assoc::AssocItem, rustc_hash[733386de75a58a40]::FxBuildHasher> as core[90b8396b6039faa7]::iter::traits::collect::Extend<(rustc_span[74cd7f09f1ca77f9]::symbol::Symbol, &rustc_middle[d80101abd097f72b]::ty::assoc::AssocItem)>>::extend<core[90b8396b6039faa7]::iter::adapters::flatten::Flatten<core[90b8396b6039faa7]::iter::adapters::filter_map::FilterMap<core[90b8396b6039faa7]::slice::iter::Iter<rustc_hir[6e224bfe6d508dae]::hir::PolyTraitRef>, <dyn rustc_hir_analysis[da7d2587c78354bd]::hir_ty_lowering::HirTyLowerer>::check_for_required_assoc_tys::{closure#1}>>>::{closure#0}>::{closure#0}>::{closure#0}
  28:     0x751617ee2e84 - <dyn rustc_hir_analysis[da7d2587c78354bd]::hir_ty_lowering::HirTyLowerer>::lower_trait_object_ty
  29:     0x7516178d5786 - <dyn rustc_hir_analysis[da7d2587c78354bd]::hir_ty_lowering::HirTyLowerer>::lower_ty
  30:     0x7516178ce0d5 - <dyn rustc_hir_analysis[da7d2587c78354bd]::hir_ty_lowering::HirTyLowerer>::lower_fn_ty
  31:     0x7516178cd969 - rustc_hir_analysis[da7d2587c78354bd]::collect::lower_fn_sig_recovering_infer_ret_ty
  32:     0x7516178cb8dd - rustc_hir_analysis[da7d2587c78354bd]::collect::fn_sig
  33:     0x7516172c6bad - rustc_query_impl[a3e1d005031b8bb]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[a3e1d005031b8bb]::query_impl::fn_sig::dynamic_query::{closure#2}::{closure#0}, rustc_middle[d80101abd097f72b]::query::erase::Erased<[u8; 24usize]>>
  34:     0x7516172c6b6d - <rustc_query_impl[a3e1d005031b8bb]::query_impl::fn_sig::dynamic_query::{closure#2} as core[90b8396b6039faa7]::ops::function::FnOnce<(rustc_middle[d80101abd097f72b]::ty::context::TyCtxt, rustc_span[74cd7f09f1ca77f9]::def_id::DefId)>>::call_once
  35:     0x7516172c98ba - rustc_query_system[de6c792d11e5b678]::query::plumbing::try_execute_query::<rustc_query_impl[a3e1d005031b8bb]::DynamicConfig<rustc_query_system[de6c792d11e5b678]::query::caches::DefIdCache<rustc_middle[d80101abd097f72b]::query::erase::Erased<[u8; 24usize]>>, false, false, false>, rustc_query_impl[a3e1d005031b8bb]::plumbing::QueryCtxt, false>
  36:     0x7516172c8fad - rustc_query_impl[a3e1d005031b8bb]::query_impl::fn_sig::get_query_non_incr::__rust_end_short_backtrace
  37:     0x7516178884a3 - <rustc_hir_analysis[da7d2587c78354bd]::collect::CollectItemTypesVisitor as rustc_hir[6e224bfe6d508dae]::intravisit::Visitor>::visit_item
  38:     0x75161787b3bb - rustc_hir_analysis[da7d2587c78354bd]::check::wfcheck::check_well_formed
  39:     0x75161787b1cd - rustc_query_impl[a3e1d005031b8bb]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[a3e1d005031b8bb]::query_impl::check_well_formed::dynamic_query::{closure#2}::{closure#0}, rustc_middle[d80101abd097f72b]::query::erase::Erased<[u8; 1usize]>>
  40:     0x75161787ac84 - rustc_query_system[de6c792d11e5b678]::query::plumbing::try_execute_query::<rustc_query_impl[a3e1d005031b8bb]::DynamicConfig<rustc_data_structures[f99b040610e16207]::vec_cache::VecCache<rustc_span[74cd7f09f1ca77f9]::def_id::LocalDefId, rustc_middle[d80101abd097f72b]::query::erase::Erased<[u8; 1usize]>, rustc_query_system[de6c792d11e5b678]::dep_graph::graph::DepNodeIndex>, false, false, false>, rustc_query_impl[a3e1d005031b8bb]::plumbing::QueryCtxt, false>
  41:     0x75161787a73f - rustc_query_impl[a3e1d005031b8bb]::query_impl::check_well_formed::get_query_non_incr::__rust_end_short_backtrace
  42:     0x751617877f5d - rustc_hir_analysis[da7d2587c78354bd]::check::wfcheck::check_mod_type_wf
  43:     0x751617877d5f - rustc_query_impl[a3e1d005031b8bb]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[a3e1d005031b8bb]::query_impl::check_mod_type_wf::dynamic_query::{closure#2}::{closure#0}, rustc_middle[d80101abd097f72b]::query::erase::Erased<[u8; 1usize]>>
  44:     0x751617fd6e16 - rustc_query_system[de6c792d11e5b678]::query::plumbing::try_execute_query::<rustc_query_impl[a3e1d005031b8bb]::DynamicConfig<rustc_query_system[de6c792d11e5b678]::query::caches::DefaultCache<rustc_span[74cd7f09f1ca77f9]::def_id::LocalModDefId, rustc_middle[d80101abd097f72b]::query::erase::Erased<[u8; 1usize]>>, false, false, false>, rustc_query_impl[a3e1d005031b8bb]::plumbing::QueryCtxt, false>
  45:     0x751617fd6bbf - rustc_query_impl[a3e1d005031b8bb]::query_impl::check_mod_type_wf::get_query_non_incr::__rust_end_short_backtrace
  46:     0x7516173256e9 - rustc_hir_analysis[da7d2587c78354bd]::check_crate
  47:     0x7516173a5d5c - rustc_interface[ccf5b96b158150d5]::passes::run_required_analyses
  48:     0x7516180919fa - rustc_interface[ccf5b96b158150d5]::passes::analysis
  49:     0x7516180919d9 - rustc_query_impl[a3e1d005031b8bb]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[a3e1d005031b8bb]::query_impl::analysis::dynamic_query::{closure#2}::{closure#0}, rustc_middle[d80101abd097f72b]::query::erase::Erased<[u8; 0usize]>>
  50:     0x7516180f570b - rustc_query_system[de6c792d11e5b678]::query::plumbing::try_execute_query::<rustc_query_impl[a3e1d005031b8bb]::DynamicConfig<rustc_query_system[de6c792d11e5b678]::query::caches::SingleCache<rustc_middle[d80101abd097f72b]::query::erase::Erased<[u8; 0usize]>>, false, false, false>, rustc_query_impl[a3e1d005031b8bb]::plumbing::QueryCtxt, false>
  51:     0x7516180f53f9 - rustc_query_impl[a3e1d005031b8bb]::query_impl::analysis::get_query_non_incr::__rust_end_short_backtrace
  52:     0x7516180d78bc - rustc_interface[ccf5b96b158150d5]::passes::create_and_enter_global_ctxt::<core[90b8396b6039faa7]::option::Option<rustc_interface[ccf5b96b158150d5]::queries::Linker>, rustc_driver_impl[3593385ee6d6136e]::run_compiler::{closure#0}::{closure#2}>::{closure#2}::{closure#0}
  53:     0x7516180cb160 - rustc_interface[ccf5b96b158150d5]::interface::run_compiler::<(), rustc_driver_impl[3593385ee6d6136e]::run_compiler::{closure#0}>::{closure#1}
  54:     0x751617fa6d48 - std[6ca4657e2107f847]::sys::backtrace::__rust_begin_short_backtrace::<rustc_interface[ccf5b96b158150d5]::util::run_in_thread_with_globals<rustc_interface[ccf5b96b158150d5]::util::run_in_thread_pool_with_globals<rustc_interface[ccf5b96b158150d5]::interface::run_compiler<(), rustc_driver_impl[3593385ee6d6136e]::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>
  55:     0x751617fa7174 - <<std[6ca4657e2107f847]::thread::Builder>::spawn_unchecked_<rustc_interface[ccf5b96b158150d5]::util::run_in_thread_with_globals<rustc_interface[ccf5b96b158150d5]::util::run_in_thread_pool_with_globals<rustc_interface[ccf5b96b158150d5]::interface::run_compiler<(), rustc_driver_impl[3593385ee6d6136e]::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>::{closure#1} as core[90b8396b6039faa7]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
  56:     0x751617fa7aeb - std::sys::pal::unix::thread::Thread::new::thread_start::he66ac63033b645ec
  57:     0x7516122a370a - <unknown>
  58:     0x751612327aac - <unknown>
  59:                0x0 - <unknown>

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 1.87.0-nightly (e0be1a026 2025-02-24) running on x86_64-unknown-linux-gnu

query stack during panic:
#0 [associated_item_def_ids] collecting associated items or fields of `core::iter::traits::iterator::Iterator::advance_by`
#1 [associated_items] collecting associated items of `core::iter::traits::iterator::Iterator::advance_by`
#2 [fn_sig] computing function signature of `main`
#3 [check_well_formed] checking that `main` is well-formed
#4 [check_mod_type_wf] checking that types are well-formed in top-level module
#5 [analysis] running analysis passes on this crate
end of query stack
error: aborting due to 3 previous errors

Some errors have detailed explanations: E0404, E0658.
For more information about an error, try `rustc --explain E0404`.

[cyrgani]

duplicate of #137508