Index out of bounds: the len is 1 but the index is 1 #5366

MikailBag · 2020-07-14T10:52:31Z

panic message:

thread '<unnamed>' panicked at 'index out of bounds: the len is 1 but the index is 1', crates/ra_hir_def/src/nameres/path_resolution.rs:275:33
stack backtrace:
   0: backtrace::backtrace::libunwind::trace
             at /cargo/registry/src/gb.xjqchip.workers.dev-1ecc6299db9ec823/backtrace-0.3.46/src/backtrace/libunwind.rs:86
   1: backtrace::backtrace::trace_unsynchronized
             at /cargo/registry/src/gb.xjqchip.workers.dev-1ecc6299db9ec823/backtrace-0.3.46/src/backtrace/mod.rs:66
   2: std::sys_common::backtrace::_print_fmt
             at src/libstd/sys_common/backtrace.rs:78
   3: <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt
             at src/libstd/sys_common/backtrace.rs:59
   4: core::fmt::write
             at src/libcore/fmt/mod.rs:1069
   5: std::io::Write::write_fmt
             at src/libstd/io/mod.rs:1504
   6: std::sys_common::backtrace::_print
             at src/libstd/sys_common/backtrace.rs:62
   7: std::sys_common::backtrace::print
             at src/libstd/sys_common/backtrace.rs:49
   8: std::panicking::default_hook::{{closure}}
             at src/libstd/panicking.rs:198
   9: std::panicking::default_hook
             at src/libstd/panicking.rs:218
  10: std::panicking::rust_panic_with_hook
             at src/libstd/panicking.rs:511
  11: rust_begin_unwind
             at src/libstd/panicking.rs:419
  12: core::panicking::panic_fmt
             at src/libcore/panicking.rs:111
  13: core::panicking::panic_bounds_check
             at src/libcore/panicking.rs:69
  14: ra_hir_def::nameres::path_resolution::<impl ra_hir_def::nameres::CrateDefMap>::resolve_path_fp_with_macro
  15: ra_hir_def::resolver::Resolver::resolve_path_in_type_ns
  16: ra_hir_ty::lower::<impl ra_hir_ty::Ty>::from_hir_ext
  17: ra_hir_ty::lower::impl_self_ty_query
  18: salsa::runtime::Runtime::execute_query_implementation
  19: salsa::derived::slot::Slot<Q,MP>::read_upgrade
  20: salsa::derived::slot::Slot<Q,MP>::read
  21: <salsa::derived::DerivedStorage<Q,MP> as salsa::plumbing::QueryStorageOps<Q>>::try_fetch
  22: <DB as ra_hir_ty::db::HirDatabase>::impl_self_ty::__shim
  23: <DB as ra_hir_ty::db::HirDatabase>::impl_self_ty
  24: ra_hir_ty::lower::impl_trait_query
  25: salsa::runtime::Runtime::execute_query_implementation
  26: salsa::derived::slot::Slot<Q,MP>::read_upgrade
  27: salsa::derived::slot::Slot<Q,MP>::maybe_changed_since
  28: <salsa::derived::DerivedStorage<Q,MP> as salsa::plumbing::QueryStorageOps<Q>>::maybe_changed_since
  29: salsa::derived::slot::MemoRevisions::validate_memoized_value
  30: salsa::derived::slot::Slot<Q,MP>::read_upgrade
  31: salsa::derived::slot::Slot<Q,MP>::read
  32: <salsa::derived::DerivedStorage<Q,MP> as salsa::plumbing::QueryStorageOps<Q>>::try_fetch
  33: <DB as ra_hir_ty::db::HirDatabase>::trait_impls_in_crate::__shim
  34: ra_hir_ty::method_resolution::TraitImpls::trait_impls_in_deps_query
  35: salsa::runtime::Runtime::execute_query_implementation
  36: salsa::derived::slot::Slot<Q,MP>::read_upgrade
  37: salsa::derived::slot::Slot<Q,MP>::read
  38: <salsa::derived::DerivedStorage<Q,MP> as salsa::plumbing::QueryStorageOps<Q>>::try_fetch
  39: <DB as ra_hir_ty::db::HirDatabase>::trait_impls_in_deps::__shim
  40: ra_hir_ty::traits::chalk::<impl chalk_solve::RustIrDatabase<ra_hir_ty::traits::chalk::interner::Interner> for ra_hir_ty::traits::ChalkContext>::impls_for_trait
  41: chalk_solve::clauses::program_clauses_that_could_match
  42: chalk_solve::clauses::program_clauses_for_goal
  43: chalk_recursive::recursive::Solver<I>::solve_new_subgoal
  44: <chalk_recursive::recursive::Solver<I> as chalk_recursive::solve::SolveDatabase<I>>::solve_goal
  45: <chalk_recursive::recursive::RecursiveSolver<I> as chalk_solve::solve::Solver<I>>::solve_limited
  46: ra_hir_ty::traits::trait_solve_query
  47: salsa::runtime::Runtime::execute_query_implementation
  48: salsa::derived::slot::Slot<Q,MP>::read_upgrade
  49: salsa::derived::slot::Slot<Q,MP>::read
  50: <salsa::derived::DerivedStorage<Q,MP> as salsa::plumbing::QueryStorageOps<Q>>::try_fetch
  51: <DB as ra_hir_ty::db::HirDatabase>::trait_solve::__shim
  52: <DB as ra_hir_ty::db::HirDatabase>::trait_solve
  53: ra_hir_ty::autoderef::deref
  54: <core::iter::sources::Successors<T,F> as core::iter::traits::iterator::Iterator>::next
  55: core::iter::traits::iterator::Iterator::find_map
  56: ra_hir_ty::infer::expr::<impl ra_hir_ty::infer::InferenceContext>::infer_expr_inner
  57: ra_hir_ty::infer::expr::<impl ra_hir_ty::infer::InferenceContext>::infer_expr
  58: ra_hir_ty::infer::expr::<impl ra_hir_ty::infer::InferenceContext>::infer_expr_inner
  59: ra_hir_ty::infer::expr::<impl ra_hir_ty::infer::InferenceContext>::infer_expr
  60: ra_hir_ty::infer::expr::<impl ra_hir_ty::infer::InferenceContext>::infer_expr_inner
  61: ra_hir_ty::infer::expr::<impl ra_hir_ty::infer::InferenceContext>::infer_expr_coerce
  62: ra_hir_ty::infer::infer_query
  63: salsa::runtime::Runtime::execute_query_implementation
  64: salsa::derived::slot::Slot<Q,MP>::read_upgrade
  65: salsa::derived::slot::Slot<Q,MP>::read
  66: <salsa::derived::DerivedStorage<Q,MP> as salsa::plumbing::QueryStorageOps<Q>>::try_fetch
  67: <DB as ra_hir_ty::db::HirDatabase>::infer_query::__shim
  68: ra_hir_ty::db::infer_wait
  69: ra_hir::source_analyzer::SourceAnalyzer::new_for_body
  70: ra_hir::semantics::SemanticsImpl::analyze2
  71: ra_hir::semantics::SemanticsImpl::descend_into_macros
  72: ra_ide::hover::hover
  73: std::panicking::try
  74: ra_ide::Analysis::hover
  75: rust_analyzer::handlers::handle_hover
  76: <F as threadpool::FnBox>::call_box

Installed via xtask from source.

$ git rev-parse HEAD
510866b4a1a812414568bd96f1d197587ead78c0

The text was updated successfully, but these errors were encountered:

bjorn3 · 2020-07-14T10:53:32Z

What project is this on?

jonas-schievink · 2020-07-24T10:49:59Z

@MikailBag Can you provide the source code that causes this panic?

MikailBag · 2020-07-24T10:54:49Z

I don't remember neither source file name, nor git commit unfortunately. If I see this panic again, I'll reopen.

chanks · 2020-09-23T22:32:36Z

Just hit this myself, on a closed-source project. The line number is a little different, I'm assuming it drifted since this last report.

Tried to reproduce but wasn't able to. It happened as I was adding a mod declaration (the referenced file already existed, but wasn't syntactically valid yet), and then a pub(crate) use declaration for a struct in that file.

thread '<unnamed>' panicked at 'index out of bounds: the len is 1 but the index is 4', crates/hir_def/src/nameres/path_resolution.rs:283:33
stack backtrace:
   0: backtrace::backtrace::libunwind::trace
             at /cargo/registry/src/gb.xjqchip.workers.dev-1ecc6299db9ec823/backtrace-0.3.46/src/backtrace/libunwind.rs:86
   1: backtrace::backtrace::trace_unsynchronized
             at /cargo/registry/src/gb.xjqchip.workers.dev-1ecc6299db9ec823/backtrace-0.3.46/src/backtrace/mod.rs:66
   2: std::sys_common::backtrace::_print_fmt
             at src/libstd/sys_common/backtrace.rs:78
   3: <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt
             at src/libstd/sys_common/backtrace.rs:59
   4: core::fmt::write
             at src/libcore/fmt/mod.rs:1076
   5: std::io::Write::write_fmt
             at src/libstd/io/mod.rs:1537
   6: std::sys_common::backtrace::_print
             at src/libstd/sys_common/backtrace.rs:62
   7: std::sys_common::backtrace::print
             at src/libstd/sys_common/backtrace.rs:49
   8: std::panicking::default_hook::{{closure}}
             at src/libstd/panicking.rs:198
   9: std::panicking::default_hook
             at src/libstd/panicking.rs:217
  10: std::panicking::rust_panic_with_hook
             at src/libstd/panicking.rs:526
  11: rust_begin_unwind
             at src/libstd/panicking.rs:437
  12: core::panicking::panic_fmt
             at src/libcore/panicking.rs:85
  13: core::panicking::panic_bounds_check
             at src/libcore/panicking.rs:62
  14: hir_def::nameres::path_resolution::<impl hir_def::nameres::CrateDefMap>::resolve_path_fp_with_macro
  15: hir_def::resolver::Resolver::resolve_path_in_type_ns
  16: hir_ty::lower::<impl hir_ty::Ty>::from_hir_ext
  17: hir_ty::lower::impl_self_ty_query
  18: salsa::runtime::Runtime::execute_query_implementation
  19: salsa::derived::slot::Slot<Q,MP>::read_upgrade
  20: salsa::derived::slot::Slot<Q,MP>::read
  21: <salsa::derived::DerivedStorage<Q,MP> as salsa::plumbing::QueryStorageOps<Q>>::try_fetch
  22: <DB as hir_ty::db::HirDatabase>::impl_self_ty::__shim
  23: <DB as hir_ty::db::HirDatabase>::impl_self_ty
  24: hir_ty::lower::impl_trait_query
  25: salsa::runtime::Runtime::execute_query_implementation
  26: salsa::derived::slot::Slot<Q,MP>::read_upgrade
  27: salsa::derived::slot::Slot<Q,MP>::maybe_changed_since
  28: hir_ty::db::HirDatabaseGroupStorage__::maybe_changed_since
  29: salsa::derived::slot::MemoRevisions::validate_memoized_value
  30: salsa::derived::slot::Slot<Q,MP>::read_upgrade
  31: salsa::derived::slot::Slot<Q,MP>::read
  32: <salsa::derived::DerivedStorage<Q,MP> as salsa::plumbing::QueryStorageOps<Q>>::try_fetch
  33: <DB as hir_ty::db::HirDatabase>::trait_impls_in_crate::__shim
  34: hir_ty::method_resolution::TraitImpls::trait_impls_in_deps_query
  35: salsa::runtime::Runtime::execute_query_implementation
  36: salsa::derived::slot::Slot<Q,MP>::read_upgrade
  37: salsa::derived::slot::Slot<Q,MP>::maybe_changed_since
  38: hir_ty::db::HirDatabaseGroupStorage__::maybe_changed_since
  39: salsa::derived::slot::MemoRevisions::validate_memoized_value
  40: salsa::derived::slot::Slot<Q,MP>::read_upgrade
  41: salsa::derived::slot::Slot<Q,MP>::read
  42: <salsa::derived::DerivedStorage<Q,MP> as salsa::plumbing::QueryStorageOps<Q>>::try_fetch
  43: <DB as hir_ty::db::HirDatabase>::trait_solve::__shim
  44: <DB as hir_ty::db::HirDatabase>::trait_solve
  45: hir_ty::autoderef::deref
  46: core::iter::traits::iterator::Iterator::find_map
  47: hir_ty::infer::expr::<impl hir_ty::infer::InferenceContext>::infer_expr_inner
  48: hir_ty::infer::expr::<impl hir_ty::infer::InferenceContext>::infer_expr_coerce
  49: hir_ty::infer::expr::<impl hir_ty::infer::InferenceContext>::infer_expr_inner
  50: hir_ty::infer::expr::<impl hir_ty::infer::InferenceContext>::infer_expr_coerce
  51: hir_ty::infer::infer_query
  52: salsa::runtime::Runtime::execute_query_implementation
  53: salsa::derived::slot::Slot<Q,MP>::read_upgrade
  54: salsa::derived::slot::Slot<Q,MP>::read
  55: <salsa::derived::DerivedStorage<Q,MP> as salsa::plumbing::QueryStorageOps<Q>>::try_fetch
  56: <DB as hir_ty::db::HirDatabase>::infer_query::__shim
  57: hir_ty::db::infer_wait
  58: hir_ty::diagnostics::validate_body
  59: hir::code_model::Module::diagnostics
  60: ide::diagnostics::diagnostics
  61: ide::Analysis::diagnostics
  62: rust_analyzer::handlers::publish_diagnostics
  63: core::ops::function::impls::<impl core::ops::function::FnMut<A> for &mut F>::call_mut
  64: <alloc::vec::Vec<T> as alloc::vec::SpecExtend<T,I>>::from_iter
  65: <F as threadpool::FnBox>::call_box
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.

jonas-schievink · 2020-09-23T22:40:58Z

Let's keep the issue open regardless, this seems important to track.

The panicking line is this:

https://github.com/rust-analyzer/rust-analyzer/blob/4ddb8124b01a04adcc7d42444f7ca8d377bb60ae/crates/hir_def/src/nameres/path_resolution.rs#L283

injecto · 2021-10-12T12:10:07Z

I've had the similar issue (VS Code output):

Panic context:
> 
version: ed4b312fa 2021-10-11 stable
request: textDocument/hover HoverParams {
    text_document: TextDocumentIdentifier {
        uri: Url {
            scheme: "file",
            cannot_be_a_base: false,
            username: "",
            password: None,
            host: None,
            port: None,
            path: "/home/injecto/dev/adv/core/actors/entity_streamer/src/streamer.rs",
            query: None,
            fragment: None,
        },
    },
    position: Position(
        Position {
            line: 68,
            character: 23,
        },
    ),
    work_done_progress_params: WorkDoneProgressParams {
        work_done_token: None,
    },
}

> impl_trait_query(ImplId(15627) -> ItemLoc { container: ModuleId { krate: CrateId(1134), block: None, local_id: Idx::<ModuleData>(4) }, id: ItemTreeId { tree: TreeId { file: HirFileId(FileId(FileId(3925))), block: None }, value: Idx::<Impl>(0) } } -> ImplData { target_trait: None, self_ty: Path(Path { type_anchor: None, mod_path: ModPath { kind: Plain, segments: [Name(Text("CpuSet"))] }, generic_args: [None] }), items: [FunctionId(FunctionId(28448)), FunctionId(FunctionId(28449)), FunctionId(FunctionId(28450)), FunctionId(FunctionId(28451)), FunctionId(FunctionId(28452)), FunctionId(FunctionId(28453)), FunctionId(FunctionId(28454)), FunctionId(FunctionId(28455)), FunctionId(FunctionId(28456)), FunctionId(FunctionId(28457)), FunctionId(FunctionId(28458)), FunctionId(FunctionId(28459))], is_negative: false })

> impl_self_ty_query(ImplId(15627) -> ItemLoc { container: ModuleId { krate: CrateId(1134), block: None, local_id: Idx::<ModuleData>(4) }, id: ItemTreeId { tree: TreeId { file: HirFileId(FileId(FileId(3925))), block: None }, value: Idx::<Impl>(0) } } -> ImplData { target_trait: None, self_ty: Path(Path { type_anchor: None, mod_path: ModPath { kind: Plain, segments: [Name(Text("CpuSet"))] }, generic_args: [None] }), items: [FunctionId(FunctionId(28448)), FunctionId(FunctionId(28449)), FunctionId(FunctionId(28450)), FunctionId(FunctionId(28451)), FunctionId(FunctionId(28452)), FunctionId(FunctionId(28453)), FunctionId(FunctionId(28454)), FunctionId(FunctionId(28455)), FunctionId(FunctionId(28456)), FunctionId(FunctionId(28457)), FunctionId(FunctionId(28458)), FunctionId(FunctionId(28459))], is_negative: false })

> DefMap CrateId(1134) crate_name=Some(CrateDisplayName { crate_name: CrateName("build_script_build"), canonical_name: "build-script-build" }) block=None path=CpuSet

thread '<unnamed>' panicked at 'index out of bounds: the len is 1 but the index is 4', crates/hir_def/src/nameres/path_resolution.rs:389:33
stack backtrace:
   0: rust_begin_unwind
             at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/panicking.rs:515:5
   1: core::panicking::panic_fmt
             at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/core/src/panicking.rs:92:14
   2: core::panicking::panic_bounds_check
             at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/core/src/panicking.rs:69:5
   3: hir_def::nameres::path_resolution::<impl hir_def::nameres::DefMap>::resolve_path_fp_with_macro_single
   4: hir_def::resolver::Resolver::resolve_path_in_type_ns
   5: hir_ty::lower::TyLoweringContext::lower_ty_ext
   6: hir_ty::lower::impl_self_ty_query
   7: salsa::runtime::Runtime::execute_query_implementation
   8: salsa::derived::slot::Slot<Q,MP>::read_upgrade
   9: salsa::derived::slot::Slot<Q,MP>::read
  10: salsa::QueryTable<Q>::get
  11: <DB as hir_ty::db::HirDatabase>::impl_self_ty
  12: hir_ty::lower::impl_trait_query
  13: salsa::runtime::Runtime::execute_query_implementation
  14: salsa::derived::slot::Slot<Q,MP>::read_upgrade
  15: salsa::derived::slot::Slot<Q,MP>::maybe_changed_since
  16: <salsa::derived::DerivedStorage<Q,MP> as salsa::plumbing::QueryStorageOps<Q>>::maybe_changed_since
  17: salsa::derived::slot::MemoRevisions::validate_memoized_value
  18: salsa::derived::slot::Slot<Q,MP>::read_upgrade
  19: salsa::derived::slot::Slot<Q,MP>::read
  20: salsa::QueryTable<Q>::get
  21: <DB as hir_ty::db::HirDatabase>::trait_impls_in_crate
  22: hir::Impl::all_for_type
  23: core::ops::function::impls::<impl core::ops::function::FnMut<A> for &mut F>::call_mut
  24: <core::iter::adapters::flatten::Flatten<I> as core::iter::traits::iterator::Iterator>::next
  25: <alloc::vec::Vec<T> as alloc::vec::spec_from_iter::SpecFromIter<T,I>>::from_iter
  26: ide::goto_implementation::goto_implementation
  27: std::panicking::try
  28: core::ops::function::impls::<impl core::ops::function::FnMut<A> for &mut F>::call_mut
  29: <alloc::vec::Vec<T> as alloc::vec::spec_from_iter::SpecFromIter<T,I>>::from_iter
  30: rust_analyzer::handlers::handle_hover
  31: std::panicking::try
  32: <F as threadpool::FnBox>::call_box
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.
[Error - 3:03:45 PM] Request textDocument/hover failed.
  Message: server panicked: index out of bounds: the len is 1 but the index is 4
  Code: -32603

jeromegn · 2021-11-13T12:20:54Z

Adding to the data here, my vscode output:

> DefMap CrateId(600) crate_name=Some(CrateDisplayName { crate_name: CrateName("build_script_build"), canonical_name: "build-script-build" }) block=None path=serde_if_integer128

thread '<unnamed>' panicked at 'index out of bounds: the len is 1 but the index is 12', crates/hir_def/src/nameres/path_resolution.rs:389:33
stack backtrace:
   0: rust_begin_unwind
             at /rustc/59eed8a2aac0230a8b53e89d4e99d55912ba6b35/library/std/src/panicking.rs:517:5
   1: core::panicking::panic_fmt
             at /rustc/59eed8a2aac0230a8b53e89d4e99d55912ba6b35/library/core/src/panicking.rs:101:14
   2: core::panicking::panic_bounds_check
             at /rustc/59eed8a2aac0230a8b53e89d4e99d55912ba6b35/library/core/src/panicking.rs:77:5
   3: hir_def::nameres::path_resolution::<impl hir_def::nameres::DefMap>::resolve_path_fp_with_macro_single
   4: hir_def::nameres::path_resolution::<impl hir_def::nameres::DefMap>::resolve_path_fp_with_macro
   5: hir_def::macro_call_as_call_id
   6: hir_def::body::Expander::enter_expand
   7: hir_def::data::collect_items
   8: hir_def::data::TraitData::trait_data_query
   9: salsa::runtime::Runtime::execute_query_implementation
  10: salsa::derived::slot::Slot<Q,MP>::read_upgrade
  11: salsa::derived::slot::Slot<Q,MP>::maybe_changed_since
  12: <salsa::derived::DerivedStorage<Q,MP> as salsa::plumbing::QueryStorageOps<Q>>::maybe_changed_since
  13: salsa::derived::slot::MemoRevisions::validate_memoized_value
  14: salsa::derived::slot::Slot<Q,MP>::read_upgrade
  15: salsa::derived::slot::Slot<Q,MP>::read
  16: salsa::QueryTable<Q>::get
  17: <DB as hir_ty::db::HirDatabase>::impl_datum
  18: chalk_solve::clauses::program_clauses_that_could_match
  19: chalk_recursive::solve::SolveIteration::solve_iteration
  20: chalk_recursive::fixed_point::RecursiveContext<K,V>::solve_goal
  21: chalk_recursive::fulfill::Fulfill<I,Solver>::prove
  22: chalk_recursive::fulfill::Fulfill<I,Solver>::solve
  23: chalk_recursive::solve::SolveIteration::solve_iteration
  24: chalk_recursive::fixed_point::RecursiveContext<K,V>::solve_goal
  25: chalk_recursive::fixed_point::RecursiveContext<K,V>::solve_root_goal
  26: <hir_ty::db::TraitSolveQueryQuery as salsa::plumbing::QueryFunction>::execute
  27: salsa::runtime::Runtime::execute_query_implementation
  28: salsa::derived::slot::Slot<Q,MP>::read_upgrade
  29: salsa::derived::slot::Slot<Q,MP>::read
  30: salsa::QueryTable<Q>::get
  31: <DB as hir_ty::db::HirDatabase>::trait_solve_query
  32: hir_ty::db::trait_solve_wait
  33: <DB as hir_ty::db::HirDatabase>::trait_solve
  34: hir_ty::infer::unify::InferenceTable::register_obligation_in_env
  35: hir_ty::infer::unify::unify
  36: hir::Type::could_unify_with
  37: ide_completion::render::compute_type_match
  38: ide_completion::render::function::FunctionRender::render
  39: ide_completion::render::function::render_method
  40: hir::Type::iterate_method_candidates::{{closure}}
  41: hir_ty::method_resolution::iterate_trait_method_candidates
  42: hir_ty::method_resolution::iterate_method_candidates_by_receiver
  43: hir_ty::method_resolution::iterate_method_candidates_dyn
  44: hir::Type::iterate_method_candidates
  45: ide_completion::completions::dot::complete_dot
  46: ide_completion::completions
  47: std::panicking::try
  48: rust_analyzer::handlers::handle_completion
  49: std::panicking::try
  50: <F as threadpool::FnBox>::call_box
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.
[Error - 7:17:02 a.m.] Request textDocument/completion failed.
  Message: server panicked: index out of bounds: the len is 1 but the index is 12
  Code: -32603

evbo · 2023-09-13T22:08:35Z

Still hitting this issue in v0.4.1659 Pre-Release: #15468

95th · 2023-10-01T05:41:59Z

Getting this consistently these days:

thread 'Worker' panicked at 'attempted to access data of empty ItemTree', crates/hir-def/src/item_tree.rs:184:28
stack backtrace:
   0: _rust_begin_unwind
   1: core::panicking::panic_fmt
   2: core::option::expect_failed
   3: hir_def::data::ImplData::impl_data_with_diagnostics_query
   4: salsa::runtime::Runtime::execute_query_implementation
   5: salsa::derived::slot::Slot<Q,MP>::read_upgrade
   6: salsa::derived::slot::Slot<Q,MP>::maybe_changed_since
   7: <salsa::derived::DerivedStorage<Q,MP> as salsa::plumbing::QueryStorageOps<Q>>::maybe_changed_since
   8: salsa::derived::slot::MemoRevisions::validate_memoized_value
   9: salsa::derived::slot::Slot<Q,MP>::read_upgrade
  10: salsa::derived::slot::Slot<Q,MP>::maybe_changed_since
  11: <salsa::derived::DerivedStorage<Q,MP> as salsa::plumbing::QueryStorageOps<Q>>::maybe_changed_since
  12: salsa::derived::slot::MemoRevisions::validate_memoized_value
  13: salsa::derived::slot::Slot<Q,MP>::read_upgrade
  14: salsa::derived::slot::Slot<Q,MP>::maybe_changed_since
  15: <salsa::derived::DerivedStorage<Q,MP> as salsa::plumbing::QueryStorageOps<Q>>::maybe_changed_since
  16: salsa::derived::slot::MemoRevisions::validate_memoized_value
  17: salsa::derived::slot::Slot<Q,MP>::read_upgrade
  18: salsa::derived::slot::Slot<Q,MP>::read
  19: <salsa::derived::DerivedStorage<Q,MP> as salsa::plumbing::QueryStorageOps<Q>>::try_fetch
  20: <DB as hir_def::db::DefDatabase>::lang_item::__shim
  21: hir_def::lang_item::LangItems::lang_item_query
  22: salsa::runtime::Runtime::execute_query_implementation
  23: salsa::derived::slot::Slot<Q,MP>::read_upgrade
  24: salsa::derived::slot::Slot<Q,MP>::read
  25: <salsa::derived::DerivedStorage<Q,MP> as salsa::plumbing::QueryStorageOps<Q>>::try_fetch
  26: <DB as hir_def::db::DefDatabase>::lang_item::__shim
  27: hir_def::lang_item::LangItems::lang_item_query
  28: salsa::runtime::Runtime::execute_query_implementation
  29: salsa::derived::slot::Slot<Q,MP>::read_upgrade
  30: salsa::derived::slot::Slot<Q,MP>::read
  31: <salsa::derived::DerivedStorage<Q,MP> as salsa::plumbing::QueryStorageOps<Q>>::try_fetch
  32: <DB as hir_def::db::DefDatabase>::lang_item::__shim
  33: hir_def::lang_item::LangItems::lang_item_query
  34: salsa::runtime::Runtime::execute_query_implementation
  35: salsa::derived::slot::Slot<Q,MP>::read_upgrade
  36: salsa::derived::slot::Slot<Q,MP>::read
  37: <salsa::derived::DerivedStorage<Q,MP> as salsa::plumbing::QueryStorageOps<Q>>::try_fetch
  38: <DB as hir_def::db::DefDatabase>::lang_item::__shim
  39: hir_def::body::lower::ExprCollector::maybe_collect_expr
  40: hir_def::body::lower::ExprCollector::maybe_collect_expr
  41: <alloc::vec::Vec<T> as alloc::vec::spec_from_iter::SpecFromIter<T,I>>::from_iter
  42: hir_def::body::lower::ExprCollector::maybe_collect_expr
  43: hir_def::body::lower::ExprCollector::collect_stmt
  44: <core::iter::adapters::map::Map<I,F> as core::iter::traits::iterator::Iterator>::fold
  45: hir_def::body::lower::ExprCollector::collect_block_
  46: hir_def::body::lower::ExprCollector::maybe_collect_expr
  47: hir_def::body::lower::ExprCollector::collect_macro_as_stmt
  48: hir_def::body::lower::ExprCollector::collect_stmt
  49: <core::iter::adapters::map::Map<I,F> as core::iter::traits::iterator::Iterator>::fold
  50: hir_def::body::lower::ExprCollector::collect_block_
  51: hir_def::body::lower::ExprCollector::maybe_collect_expr
  52: hir_def::body::lower::lower
  53: hir_def::body::Body::body_with_source_map_query
  54: salsa::runtime::Runtime::execute_query_implementation
  55: salsa::derived::slot::Slot<Q,MP>::read_upgrade
  56: salsa::derived::slot::Slot<Q,MP>::read
  57: <salsa::derived::DerivedStorage<Q,MP> as salsa::plumbing::QueryStorageOps<Q>>::try_fetch
  58: salsa::QueryTable<Q>::get
  59: <DB as hir_def::db::DefDatabase>::body_with_source_map
  60: hir::source_analyzer::SourceAnalyzer::new_for_body_no_infer
  61: hir::semantics::SemanticsImpl::analyze_impl
  62: hir::semantics::SemanticsImpl::descend_into_macros_impl
  63: hir::semantics::SemanticsImpl::descend_node_into_attributes
  64: ide::inlay_hints::chaining::hints
  65: ide::inlay_hints::hints
  66: <core::iter::adapters::map::Map<I,F> as core::iter::traits::iterator::Iterator>::fold
  67: ide::inlay_hints::inlay_hints
  68: salsa::Cancelled::catch
  69: rust_analyzer::handlers::request::handle_inlay_hints
  70: std::panicking::try
  71: core::ops::function::FnOnce::call_once{{vtable.shim}}
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.
[Error - 11:10:16] Request textDocument/inlayHint failed.
  Message: request handler panicked: attempted to access data of empty ItemTree
  Code: -32603

95th · 2023-10-01T05:43:07Z

Another:

thread 'Worker' panicked at 'index out of bounds: the len is 1 but the index is 1', crates/hir-def/src/nameres/path_resolution.rs:431:33
stack backtrace:
   0: _rust_begin_unwind
   1: core::panicking::panic_fmt
   2: core::panicking::panic_bounds_check
   3: hir_def::nameres::path_resolution::<impl hir_def::nameres::DefMap>::resolve_path_fp_with_macro_single
   4: hir_def::resolver::ModuleItemMap::resolve_path_in_type_ns
   5: hir_def::resolver::Resolver::resolve_path_in_type_ns
   6: hir_ty::lower::TyLoweringContext::lower_ty_ext
   7: hir_ty::lower::impl_self_ty_query
   8: salsa::runtime::Runtime::execute_query_implementation
   9: salsa::derived::slot::Slot<Q,MP>::read_upgrade
  10: salsa::derived::slot::Slot<Q,MP>::read
  11: <salsa::derived::DerivedStorage<Q,MP> as salsa::plumbing::QueryStorageOps<Q>>::try_fetch
  12: salsa::QueryTable<Q>::get
  13: <DB as hir_ty::db::HirDatabase>::impl_self_ty
  14: hir_ty::lower::impl_trait_query
  15: salsa::runtime::Runtime::execute_query_implementation
  16: salsa::derived::slot::Slot<Q,MP>::read_upgrade
  17: salsa::derived::slot::Slot<Q,MP>::maybe_changed_since
  18: <salsa::derived::DerivedStorage<Q,MP> as salsa::plumbing::QueryStorageOps<Q>>::maybe_changed_since
  19: salsa::derived::slot::MemoRevisions::validate_memoized_value
  20: salsa::derived::slot::Slot<Q,MP>::read_upgrade
  21: salsa::derived::slot::Slot<Q,MP>::read
  22: <salsa::derived::DerivedStorage<Q,MP> as salsa::plumbing::QueryStorageOps<Q>>::try_fetch
  23: <DB as hir_ty::db::HirDatabase>::trait_impls_in_crate::__shim
  24: hir::Impl::all_for_type
  25: ide_assists::handlers::generate_delegate_trait::Field::new
  26: ide_assists::handlers::generate_delegate_trait::generate_delegate_trait
  27: ide_assists::assists
  28: std::panicking::try
  29: ide::Analysis::assists_with_fixes
  30: rust_analyzer::handlers::request::handle_code_action
  31: std::panicking::try
  32: core::ops::function::FnOnce::call_once{{vtable.shim}}
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.

95th · 2023-10-01T05:43:39Z

Code in my main.rs:

fn main() {
    println!("Hello, world!");
}


struct AppState {
    url: String,
    method: // I am typing here
}

zhixinwen · 2023-10-10T17:26:07Z

similar error:

thread 'Worker' panicked at crates/hir-def/src/nameres/path_resolution.rs:431:37:
index out of bounds: the len is 4 but the index is 5
stack backtrace:
   0: _rust_begin_unwind
   1: core::panicking::panic_fmt
   2: core::panicking::panic_bounds_check
   3: hir_def::nameres::path_resolution::<impl hir_def::nameres::DefMap>::resolve_path_fp_with_macro_single
   4: hir_def::resolver::ModuleItemMap::resolve_path_in_type_ns
   5: hir_def::resolver::Resolver::resolve_path_in_type_ns
   6: hir_ty::lower::TyLoweringContext::lower_ty_ext
   7: hir_ty::lower::impl_self_ty_query
   8: salsa::runtime::Runtime::execute_query_implementation
   9: salsa::derived::slot::Slot<Q,MP>::read_upgrade
  10: salsa::derived::slot::Slot<Q,MP>::read
  11: <salsa::derived::DerivedStorage<Q,MP> as salsa::plumbing::QueryStorageOps<Q>>::try_fetch
  12: salsa::QueryTable<Q>::get
  13: <DB as hir_ty::db::HirDatabase>::impl_self_ty
  14: hir_ty::lower::impl_trait_query
  15: salsa::runtime::Runtime::execute_query_implementation
  16: salsa::derived::slot::Slot<Q,MP>::read_upgrade
  17: salsa::derived::slot::Slot<Q,MP>::maybe_changed_since
  18: <salsa::derived::DerivedStorage<Q,MP> as salsa::plumbing::QueryStorageOps<Q>>::maybe_changed_since
  19: salsa::derived::slot::MemoRevisions::validate_memoized_value
  20: salsa::derived::slot::Slot<Q,MP>::read_upgrade
  21: salsa::derived::slot::Slot<Q,MP>::read
  22: <salsa::derived::DerivedStorage<Q,MP> as salsa::plumbing::QueryStorageOps<Q>>::try_fetch
  23: <DB as hir_ty::db::HirDatabase>::trait_impls_in_crate::__shim
  24: <alloc::vec::Vec<T> as alloc::vec::spec_from_iter::SpecFromIter<T,I>>::from_iter
  25: hir_ty::method_resolution::TraitImpls::trait_impls_in_deps_query
  26: salsa::runtime::Runtime::execute_query_implementation
  27: salsa::derived::slot::Slot<Q,MP>::read_upgrade
  28: salsa::derived::slot::Slot<Q,MP>::maybe_changed_since
  29: <salsa::derived::DerivedStorage<Q,MP> as salsa::plumbing::QueryStorageOps<Q>>::maybe_changed_since
  30: salsa::derived::slot::MemoRevisions::validate_memoized_value
  31: salsa::derived::slot::Slot<Q,MP>::read_upgrade
  32: salsa::derived::slot::Slot<Q,MP>::read
  33: <salsa::derived::DerivedStorage<Q,MP> as salsa::plumbing::QueryStorageOps<Q>>::try_fetch
  34: salsa::QueryTable<Q>::get
  35: <DB as hir_ty::db::HirDatabase>::trait_solve_query
  36: hir_ty::db::trait_solve_wait
  37: hir_ty::infer::coerce::<impl hir_ty::infer::unify::InferenceTable>::coerce_inner
  38: hir_ty::infer::coerce::<impl hir_ty::infer::unify::InferenceTable>::coerce
  39: hir_ty::infer::coerce::<impl hir_ty::infer::InferenceContext>::coerce
  40: hir_ty::infer::expr::<impl hir_ty::infer::InferenceContext>::infer_block
  41: hir_ty::infer::expr::<impl hir_ty::infer::InferenceContext>::infer_expr_inner
  42: hir_ty::infer::expr::<impl hir_ty::infer::InferenceContext>::infer_expr_coerce
  43: hir_ty::infer::infer_query
  44: salsa::runtime::Runtime::execute_query_implementation
  45: salsa::derived::slot::Slot<Q,MP>::read_upgrade
  46: salsa::derived::slot::Slot<Q,MP>::read
  47: <salsa::derived::DerivedStorage<Q,MP> as salsa::plumbing::QueryStorageOps<Q>>::try_fetch
  48: <DB as hir_ty::db::HirDatabase>::infer_query::__shim
  49: hir_ty::db::infer_wait
  50: hir::DefWithBody::diagnostics
  51: hir::ModuleDef::diagnostics
  52: hir::Module::diagnostics
  53: ide_diagnostics::diagnostics
  54: salsa::Cancelled::catch
  55: core::ops::function::impls::<impl core::ops::function::FnMut<A> for &mut F>::call_mut
  56: alloc::vec::in_place_collect::<impl alloc::vec::spec_from_iter::SpecFromIter<T,I> for alloc::vec::Vec<T>>::from_iter
  57: core::ops::function::FnOnce::call_once{{vtable.shim}}
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.
thread 'LspServer' panicked at /Users/runner/work/rust-analyzer/rust-analyzer/crates/stdx/src/thread/pool.rs:86:35:
called `Result::unwrap()` on an `Err` value: "SendError(..)"

Veykril · 2025-04-30T12:07:58Z

Closing this as presumably a salsa bug which should be fixed now

bjorn3 added the A-ty type system / type inference / traits / method resolution label Jul 14, 2020

Dushistov mentioned this issue Jul 15, 2020

index out of bounds for crates/ra_ide_db/src/line_index.rs #5388

Closed

MikailBag closed this as completed Jul 24, 2020

jonas-schievink reopened this Sep 23, 2020

flodiebold added S-unactionable Issue requires feedback, design decisions or is blocked on other work and removed A-ty type system / type inference / traits / method resolution labels Dec 22, 2020

jonas-schievink added the A-nameres name, path and module resolution label Mar 25, 2021

jonas-schievink mentioned this issue Mar 25, 2021

index out of bounds: not reproducable #6169

Closed

jpetkau mentioned this issue Jul 19, 2021

subst.rs "index out of bounds: the len is 1 but the index is 1" #9639

Closed

Halkcyon mentioned this issue Aug 29, 2021

index out of bounds panic in chalk_ir::SubstFolder::fold_free_var_ty #10046

Closed

lnicola added Broken Window Bugs / technical debt to be addressed immediately I-panic and removed S-unactionable Issue requires feedback, design decisions or is blocked on other work labels Jul 21, 2023

This was referenced Jul 21, 2023

thread '<unnamed>' panicked at 'index out of bounds: the len is 1 but the index is 1', crates/hir_def/src/nameres/path_resolution.rs:385:33 #10084

Closed

When i modify toml, i have to wait 1 minute for hints, with error #12943

Closed

lnicola changed the title ~~Index out of bounds~~ Index out of bounds: the len is 1 but the index is 1 Jul 21, 2023

lnicola mentioned this issue Jul 21, 2023

rust-analyzer: Failed to run build scripts of some packages #15324

Closed

lnicola mentioned this issue Sep 9, 2023

hover panics v0.4.1625 #15468

Closed

lnicola mentioned this issue Sep 28, 2023

thread 'Worker' panicked at 'index out of bounds #15676

Closed

Veykril mentioned this issue Nov 10, 2023

Constant crashes, enormous unintelligible errors #15717

Closed

Veykril closed this as completed Apr 30, 2025

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Index out of bounds: the len is 1 but the index is 1 #5366

Index out of bounds: the len is 1 but the index is 1 #5366

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Veykril commented Apr 30, 2025

Index out of bounds: the len is 1 but the index is 1 #5366

Index out of bounds: the len is 1 but the index is 1 #5366

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