I'm trying to implement SIMD acceleration for my raytracer (using nightly rust), but I am getting bogus errors. Here is an offending piece of code:

impl<const N: usize> SimdRay<N>
where LaneCount<N>: SupportedLaneCount {
    pub fn from_array(array: [Ray; N]) -> Self {
        todo!()
    }
}

Errors appear after const N: missing type for const parameter and expected COMMA,
And on SimdRay<N>: expected R_ANGLE.

I am also getting some notifications from VS Code saying the LSP server failed somehow.
Here is the error message:

[Error - 9:30:28 AM] Document pull failed for text document file:///c%3A/Users/noah/Projects/rustprojects/raytracer/src/ray.rs
  Message: request handler panicked: dependency graph cycle when querying const_param_ty_with_diagnostics_shim(Id(2c69b)), set cycle_fn/cycle_initial to fixpoint iterate.
Query stack:
[
    inherent_impls_in_crate_shim(Id(5038)),
    impl_self_ty_with_diagnostics_shim(Id(1a1a5)),
    const_param_ty_with_diagnostics_shim(Id(2c69b)),
]
  Code: -32603 
Panic context:
> 
version: 0.4.2438-standalone (df594ba8f4 2025-04-25)
request: textDocument/diagnostic DocumentDiagnosticParams {
    text_document: TextDocumentIdentifier {
        uri: Url {
            scheme: "file",
            cannot_be_a_base: false,
            username: "",
            password: None,
            host: None,
            port: None,
            path: "/c%3A/Users/noah/Projects/rustprojects/raytracer/src/debug.rs",
            query: None,
            fragment: None,
        },
    },
    identifier: Some(
        "rust-analyzer",
    ),
    previous_result_id: Some(
        "rust-analyzer",
    ),
    work_done_progress_params: WorkDoneProgressParams {
        work_done_token: None,
    },
    partial_result_params: PartialResultParams {
        partial_result_token: None,
    },
}


thread 'Worker' panicked at C:\Users\runneradmin\.cargo\registry\src\index.crates.io-1949cf8c6b5b557f\salsa-0.20.0\src\function\fetch.rs:138:25:
dependency graph cycle when querying const_param_ty_with_diagnostics_shim(Id(2c69b)), set cycle_fn/cycle_initial to fixpoint iterate.
Query stack:
[
    inherent_impls_in_crate_shim(Id(5038)),
    impl_self_ty_with_diagnostics_shim(Id(1a1a5)),
    const_param_ty_with_diagnostics_shim(Id(2c69b)),
]
stack backtrace:
   0: std::panicking::begin_panic_handler
             at /rustc/05f9846f893b09a1be1fc8560e33fc3c815cfecb/library\std\src\panicking.rs:695
   1: core::panicking::panic_fmt
             at /rustc/05f9846f893b09a1be1fc8560e33fc3c815cfecb/library\core\src\panicking.rs:75
   2: salsa::function::fetch::<impl salsa::function::IngredientImpl<C>>::fetch_cold
   3: salsa::function::fetch::<impl salsa::function::IngredientImpl<C>>::fetch
   4: <DB as hir_ty::db::HirDatabase>::const_param_ty_with_diagnostics::const_param_ty_with_diagnostics_shim
   5: <DB as hir_ty::db::HirDatabase>::const_param_ty
   6: hir_ty::consteval::path_to_const
   7: hir_ty::lower::TyLoweringContext::lower_path_as_const
   8: hir_ty::lower::path::PathLoweringContext::substs_from_args_and_bindings
   9: hir_ty::lower::path::PathLoweringContext::lower_path_inner
  10: hir_ty::lower::path::PathLoweringContext::lower_partly_resolved_path
  11: hir_ty::lower::TyLoweringContext::lower_ty_ext
  12: hir_ty::lower::const_param_ty_with_diagnostics_query
  13: salsa::function::fetch::<impl salsa::function::IngredientImpl<C>>::fetch_cold
  14: salsa::function::fetch::<impl salsa::function::IngredientImpl<C>>::fetch_cold
  15: salsa::function::fetch::<impl salsa::function::IngredientImpl<C>>::fetch
  16: <DB as hir_ty::db::HirDatabase>::const_param_ty_with_diagnostics::const_param_ty_with_diagnostics_shim
  17: <DB as hir_ty::db::HirDatabase>::const_param_ty
  18: <alloc::vec::Vec<T> as alloc::vec::spec_from_iter::SpecFromIter<T,I>>::from_iter
  19: hir_ty::make_binders
  20: hir_ty::lower::impl_self_ty_with_diagnostics_query
  21: salsa::function::fetch::<impl salsa::function::IngredientImpl<C>>::fetch_cold
  22: salsa::function::fetch::<impl salsa::function::IngredientImpl<C>>::fetch_cold
  23: salsa::function::fetch::<impl salsa::function::IngredientImpl<C>>::fetch
  24: <DB as hir_ty::db::HirDatabase>::impl_self_ty_with_diagnostics::impl_self_ty_with_diagnostics_shim
  25: hir_ty::lower::impl_self_ty_query
  26: hashbrown::raw::RawTable<T,A>::shrink_to
  27: hir_ty::method_resolution::InherentImpls::inherent_impls_in_crate_query
  28: salsa::function::fetch::<impl salsa::function::IngredientImpl<C>>::fetch_cold
  29: salsa::function::fetch::<impl salsa::function::IngredientImpl<C>>::fetch_cold
  30: salsa::function::fetch::<impl salsa::function::IngredientImpl<C>>::fetch
  31: <DB as hir_ty::db::HirDatabase>::inherent_impls_in_crate::inherent_impls_in_crate_shim
  32: hir::Module::diagnostics
  33: ide_diagnostics::semantic_diagnostics
  34: ide_diagnostics::full_diagnostics
  35: salsa::cancelled::Cancelled::catch
  36: ide::Analysis::full_diagnostics
  37: rust_analyzer::handlers::request::handle_document_diagnostics
  38: <T as serde::de::Expected>::fmt
  39: <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.
[Error - 9:30:28 AM] Request textDocument/diagnostic failed.
  Message: request handler panicked: dependency graph cycle when querying const_param_ty_with_diagnostics_shim(Id(2c69b)), set cycle_fn/cycle_initial to fixpoint iterate.
Query stack:
[
    inherent_impls_in_crate_shim(Id(5038)),
    impl_self_ty_with_diagnostics_shim(Id(1a1a5)),
    const_param_ty_with_diagnostics_shim(Id(2c69b)),
]
  Code: -32603

I've tried restarting VS Code multiple times, and each time I restart it, it works for a few minutes, but then it always does the same thing (but in a different place).

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