Panic at chalk-ir-0.98.0/src/lib.rs:2732:10

[vdrn]

Trying to edit anything inside src/lib.rs of this repository egui_struct
repeatedly causes this panic:

thread 'Worker' panicked at /rust/deps/chalk-ir-0.98.0/src/lib.rs:2732:10:
index out of bounds: the len is 1 but the index is 1
stack backtrace:
   0: rust_begin_unwind
   1: core::panicking::panic_fmt
   2: core::panicking::panic_bounds_check
   3: <chalk_ir::SubstFolder<hir_ty::interner::Interner, chalk_ir::Substitution<hir_ty::interner::Interner>> as chalk_ir::fold::TypeFolder<hir_ty::interner::Interner>>::fold_free_var_ty
   4: <chalk_ir::Ty<hir_ty::interner::Interner> as chalk_ir::fold::TypeSuperFoldable<hir_ty::interner::Interner>>::super_fold_with
   5: <chalk_ir::WhereClause<hir_ty::interner::Interner> as chalk_ir::fold::TypeFoldable<hir_ty::interner::Interner>>::try_fold_with::<core::convert::Infallible>
   6: <chalk_ir::Binders<chalk_ir::WhereClause<hir_ty::interner::Interner>> as chalk_ir::fold::TypeFoldable<hir_ty::interner::Interner>>::try_fold_with::<core::convert::Infallible>
   7: <core::iter::adapters::GenericShunt<chalk_ir::cast::Casted<core::iter::adapters::map::Map<core::iter::adapters::cloned::Cloned<core::slice::iter::Iter<chalk_ir::Binders<chalk_ir::WhereClause<hir_ty::interner::Interner>>>>, <chalk_ir::QuantifiedWhereClauses<hir_ty::"
 [ERROR][2025-02-18 18:45:16] ...p/_transport.lua:36	"rpc"	"rust-analyzer"	"stderr"	"interner::Interner> as chalk_ir::fold::TypeFoldable<hir_ty::interner::Interner>>::try_fold_with<core::convert::Infallible>::{closure#0}>, core::result::Result<chalk_ir::Binders<chalk_ir::WhereClause<hir_ty::interner::Interner>>, core::convert::Infallible>>, core::result::Result<core::convert::Infallible, core::convert::Infallible>> as core::iter::traits::iterator::Iterator>::next
   8: <chalk_ir::QuantifiedWhereClauses<hir_ty::interner::Interner> as chalk_ir::fold::TypeFoldable<hir_ty::interner::Interner>>::try_fold_with::<core::convert::Infallible>
   9: <chalk_solve::infer::InferenceTable<hir_ty::interner::Interner>>::instantiate_in::<chalk_ir::QuantifiedWhereClauses<hir_ty::interner::Interner>, core::iter::adapters::cloned::Cloned<core::slice::iter::Iter<chalk_ir::VariableKind<hir_ty::interner::Interner>>>>
  10: <chalk_solve::infer::InferenceTable<hir_ty::interner::Interner>>::instantiate_binders_existentially::<chalk_ir::QuantifiedWhereClauses"
 [ERROR][2025-02-18 18:45:16] ...p/_transport.lua:36	"rpc"	"rust-analyzer"	"stderr"	"<hir_ty::interner::Interner>>
  11: <chalk_solve::infer::unify::Unifier<hir_ty::interner::Interner>>::relate_ty_ty
  12: <chalk_solve::infer::unify::Unifier<hir_ty::interner::Interner> as chalk_ir::zip::Zipper<hir_ty::interner::Interner>>::zip_tys
  13: <chalk_solve::infer::unify::Unifier<hir_ty::interner::Interner>>::relate_ty_ty
  14: <chalk_solve::infer::unify::Unifier<hir_ty::interner::Interner> as chalk_ir::zip::Zipper<hir_ty::interner::Interner>>::zip_tys
  15: <chalk_solve::infer::unify::Unifier<hir_ty::interner::Interner> as chalk_ir::zip::Zipper<hir_ty::interner::Interner>>::zip_substs
  16: <chalk_solve::infer::unify::Unifier<hir_ty::interner::Interner>>::relate_ty_ty
  17: <chalk_solve::infer::unify::Unifier<hir_ty::interner::Interner>>::relate_var_ty
  18: <chalk_solve::infer::unify::Unifier<hir_ty::interner::Interner>>::relate_ty_ty
  19: <chalk_solve::infer::unify::Unifier<hir_ty::interner::Interner> as chalk_ir::zip::Zipper<hir_ty::interner::Interner>>::zip_tys
  20: <chalk_solve::infer::unify::Unifier<hir_ty::interner::Interner"
 [ERROR][2025-02-18 18:45:16] ...p/_transport.lua:36	"rpc"	"rust-analyzer"	"stderr"	"> as chalk_ir::zip::Zipper<hir_ty::interner::Interner>>::zip_substs
  21: <chalk_ir::WhereClause<hir_ty::interner::Interner> as chalk_ir::zip::Zip<hir_ty::interner::Interner>>::zip_with::"
 [ERROR][2025-02-18 18:45:16] ...p/_transport.lua:36	"rpc"	"rust-analyzer"	"stderr"	"<chalk_solve::infer::unify::Unifier<hir_ty::interner::Interner>>
  22: <chalk_recursive::recursive::Solver<hir_ty::interner::Interner> as chalk_recursive::solve::SolveIterationHelpers<hir_ty"
 [ERROR][2025-02-18 18:45:16] ...p/_transport.lua:36	"rpc"	"rust-analyzer"	"stderr"	"::interner::Interner>>::solve_from_clauses::<&dyn core::ops::function::Fn<(), Output = bool>>
  23: <chalk_recursive::fixed_point::RecursiveContext<chalk_ir::UCanonical<chalk_ir::InEnvironment<chalk_ir::Goal<hir_ty::interner::Interner>>>, core::result::Result<chalk_solve::solve::Solution<hir_ty::interner::Interner>, chalk_ir::NoSolution>>>::solve_goal::<&dyn chalk_solve::RustIrDatabase<hir_ty::interner::Interner>, &dyn core::ops::function::Fn<(), Output = bool>>
  24: <chalk_recursive::recursive::RecursiveSolver<hir_ty::interner::Interner> as chalk_solve::solve::Solver<hir_ty::interner::Interner>>"
 [ERROR][2025-02-18 18:45:16] ...p/_transport.lua:36	"rpc"	"rust-analyzer"	"stderr"	"::solve_limited
  25: hir_ty::traits::solve::{closure#1}
  26: <hir_ty::db::TraitSolveQuery as ra_salsa::plumbing::QueryFunction>::execute
  27: <ra_salsa::derived::slot::Slot<hir_ty::db::TraitSolveQuery>>::execute
  28: <_ as hir_ty::db::HirDatabase>::trait_solve::__shim
  29: <ide_db::RootDatabase as hir_ty::db::HirDatabase>"
 [ERROR][2025-02-18 18:45:16] ...p/_transport.lua:36	"rpc"	"rust-analyzer"	"stderr"	"::trait_solve
  30: <chalk_ir::Ty<hir_ty::interner::Interner> as hir_ty::chalk_ext::TyExt>::is_copy
  31: <hir_ty::mir::lower::MirLowerCtx>::emit_drop_and_storage_dead_for_scope
  32: <hir_ty::mir::lower::MirLowerCtx>::pop_drop_scope_assert_finished
  33: hir_ty::mir::lower::lower_to_mir
  34: hir_ty::mir::lower::mir_body_query
  35: <ra_salsa::derived::slot::Slot<hir_ty::db::MirBodyQuery>>::execute
"
 [ERROR][2025-02-18 18:45:16] ...p/_transport.lua:36	"rpc"	"rust-analyzer"	"stderr"	"  36: <_ as hir_ty::db::HirDatabase>::mir_body::__shim
  37: <ide_db::RootDatabase as hir_ty::db::HirDatabase>::mir_body
  38: hir_ty::mir::borrowck::borrowck_query
  39: <ra_salsa::derived_lru::slot::Slot<hir_ty::db"
 [ERROR][2025-02-18 18:45:16] ...p/_transport.lua:36	"rpc"	"rust-analyzer"	"stderr"	"::BorrowckQuery, ra_salsa::derived_lru::AlwaysMemoizeValue>>::execute
  40: <_ as hir_ty::db::HirDatabase>::borrowck::__shim
  41: <ide_db::RootDatabase as hir_ty::db::HirDatabase>::borrowck
  42"
 [ERROR][2025-02-18 18:45:16] ...p/_transport.lua:36	"rpc"	"rust-analyzer"	"stderr"	": <hir::DefWithBody>::diagnostics
  43: <hir::ModuleDef>::diagnostics
  44: <hir::Module>::diagnostics
  45: ide_diagnostics::semantic_diagnostics
  46: ide_diagnostics::full_diagnostics
  47: <ide::Analysis>::assists_with_fixes
  48: rust_analyzer::handlers::request::handle_code_action
  49: <<stdx::thread::pool::Pool>::spawn<<rust_analyzer::task_pool::TaskPool<rust_analyzer::main_loop::Task>>::spawn<<rust_analyzer::handlers::dispatch"
 [ERROR][2025-02-18 18:45:16] ...p/_transport.lua:36	"rpc"	"rust-analyzer"	"stderr"	"::RequestDispatcher>::on_with_thread_intent<true, false, rust_analyzer::lsp::ext::CodeActionRequest>::{closure#0}>::{closure#0}>::{closure#0} as core::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}

rust-analyzer version: rust-analyzer 1.87.0-nightly (ce36a96 2025-02-17)

rustc version: rustc 1.87.0-nightly (ce36a966c 2025-02-17)

editor or extension: both neovim and vscode

[ShoyuVanilla]

Is this happening on the HEAD of that repository's main branch? I haven't tried reproduction yet but the revision information would be a great help

edit) Nevermind. I reproduced this in the HEAD.