Closed
Description
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
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= note: this compiler was built on 2025-02-24; consider upgrading it if it is out of date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`.
Activity