Option unwrap called on None value when building to wasm32-unknown-unknown

[inferrinizzard]

This error started occurring after I moved the canvas module that contains the Canvas struct from the crate root into a submodule directory. (updates to mod.rs declared the new submodule, lib.rs to update the module path)
ie:
Old:

New:

It only occurs on the wasm32-unknown-unknown build target, running cargo build for other build targets compiles correctly

Code

use wasm_bindgen::prelude::*;
mod render;
use render::canvas::Canvas;

pub static mut CANVAS: Option<Canvas> = None;

// This is like the `main` function, except for JavaScript.
#[wasm_bindgen(start)]
pub fn main_js() -> Result<(), JsValue> {
    let window = web_sys::window().unwrap();
    let document = window.document().unwrap();
    unsafe {
        CANVAS = Some(Canvas::new(&document));
    }
    Ok(())
}

Meta

rustc --version --verbose:

rustc 1.58.1 (db9d1b20b 2022-01-20)
binary: rustc
commit-hash: db9d1b20bba1968c1ec1fc49616d4742c1725b4b
commit-date: 2022-01-20
host: x86_64-pc-windows-msvc
release: 1.58.1
LLVM version: 13.0.0

Error output

thread 'rustc' panicked at 'called `Option::unwrap()` on a `None` value', /rustc/db9d1b20bba1968c1ec1fc49616d4742c1725b4b\compiler\rustc_hir\src\definitions.rs:452:14
stack backtrace:
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.

error: internal compiler error: unexpected panic

note: the compiler unexpectedly panicked. this is a bug.

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: rustc 1.58.1 (db9d1b20b 2022-01-20) running on x86_64-pc-windows-msvc

note: compiler flags: -C embed-bitcode=no -C debuginfo=2 -C incremental --crate-type cdylib --crate-type rlib

note: some of the compiler flags provided by cargo are hidden

query stack during panic:
#0 [typeck_item_bodies] type-checking all item bodies
#1 [analysis] running analysis passes on this crate
end of query stack

Backtrace

stack backtrace:
   0:     0x7fffc20e9e1f - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h157fa6bf1896703a
   1:     0x7fffc211561a - core::fmt::write::hd933995fa5a3c525
   2:     0x7fffc20db718 - <std::io::IoSlice as core::fmt::Debug>::fmt::hb22a6129461aed2d
   3:     0x7fffc20ed736 - std::panicking::take_hook::he9e5ebb516ae9e93
   4:     0x7fffc20ed115 - std::panicking::take_hook::he9e5ebb516ae9e93
   5:     0x7fff650cd99e - <rustc_lint[7617183523d96aea]::BuiltinCombinedPreExpansionLintPass as rustc_lint[7617183523d96aea]::passes::EarlyLintPass>::check_impl_item
   6:     0x7fffc20ee049 - std::panicking::rust_panic_with_hook::hdfb9f2b0857b79cb
   7:     0x7fffc20edabf - rust_begin_unwind
   8:     0x7fffc20ea747 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h157fa6bf1896703a
   9:     0x7fffc20eda49 - rust_begin_unwind
  10:     0x7fffc2149a40 - core::panicking::panic_fmt::h0e1c9b751cd7872a
  11:     0x7fffc214998c - core::panicking::panic::hc887acba2270eb88
  12:     0x7fff69522dfa - <rustc_middle[ff7e0ef075a5e190]::ty::context::TyCtxt>::def_path_hash_to_def_id  
  13:     0x7fff6961662e - <rustc_query_system[ea294a3d7add80ba]::dep_graph::dep_node::DepNode<rustc_middle[ff7e0ef075a5e190]::dep_graph::dep_node::DepKind> as rustc_middle[ff7e0ef075a5e190]::dep_graph::dep_node::DepNodeExt>::extract_def_id
  14:     0x7fff6888d1be - rustc_query_impl[45896b7db3cc92f1]::query_callbacks::hir_owner
  15:     0x7fff69507af3 - <rustc_middle[ff7e0ef075a5e190]::ty::context::TyCtxt as rustc_query_system[ea294a3d7add80ba]::dep_graph::DepContext>::try_force_from_dep_node
  16:     0x7fff688c35ab - rustc_query_impl[45896b7db3cc92f1]::query_callbacks::diagnostic_hir_wf_check    
  17:     0x7fff688c3587 - rustc_query_impl[45896b7db3cc92f1]::query_callbacks::diagnostic_hir_wf_check    
  18:     0x7fff688c3587 - rustc_query_impl[45896b7db3cc92f1]::query_callbacks::diagnostic_hir_wf_check    
  19:     0x7fff6889b8bd - rustc_query_impl[45896b7db3cc92f1]::query_callbacks::diagnostic_hir_wf_check    
  20:     0x7fff685c7dec - <rustc_mir_dataflow[204209cfb57e373]::framework::engine::RustcMirAttrs>::output_path
  21:     0x7fff6875ade3 - <rustc_mir_dataflow[204209cfb57e373]::framework::engine::RustcMirAttrs>::output_path
  22:     0x7fff67b7d44e - <<rustc_typeck[1612bd5dabb432b3]::coherence::inherent_impls_overlap::InherentOverlapChecker as rustc_hir[eb0a003bff263e90]::itemlikevisit::ItemLikeVisitor>::visit_item::RegionId as core[a1a53ba5778ea5ee]::fmt::Debug>::fmt
  23:     0x7fff67aac2a3 - <rustc_typeck[1612bd5dabb432b3]::check::CheckItemTypesVisitor as rustc_hir[eb0a003bff263e90]::itemlikevisit::ItemLikeVisitor>::visit_item
  24:     0x7fff6882229b - <rustc_span[2d757f059925335b]::def_id::DefIndex as rustc_query_impl[45896b7db3cc92f1]::profiling_support::SpecIntoSelfProfilingString>::spec_to_self_profile_string
  25:     0x7fff688ff62e - rustc_query_impl[45896b7db3cc92f1]::query_callbacks::diagnostic_hir_wf_check    
  26:     0x7fff687d59da - <rustc_query_impl[45896b7db3cc92f1]::queries::diagnostic_hir_wf_check as rustc_query_system[ea294a3d7add80ba]::query::config::QueryDescription<rustc_query_impl[45896b7db3cc92f1]::plumbing::QueryCtxt>>::describe
  27:     0x7fff686d59b9 - <rustc_mir_dataflow[204209cfb57e373]::framework::engine::RustcMirAttrs>::output_path
  28:     0x7fff687f71a5 - <rustc_query_impl[45896b7db3cc92f1]::Queries as rustc_middle[ff7e0ef075a5e190]::ty::query::QueryEngine>::try_mark_green
  29:     0x7fff67a8e65d - <rustc_typeck[1612bd5dabb432b3]::outlives::explicit::ExplicitPredicatesMap as core[a1a53ba5778ea5ee]::fmt::Debug>::fmt
  30:     0x7fff67a8dc7b - rustc_typeck[1612bd5dabb432b3]::check_crate
  31:     0x7fff65217ce9 - rustc_interface[d7ab38303f68c91e]::passes::analysis
  32:     0x7fff68821cdb - <rustc_span[2d757f059925335b]::def_id::DefIndex as rustc_query_impl[45896b7db3cc92f1]::profiling_support::SpecIntoSelfProfilingString>::spec_to_self_profile_string
  33:     0x7fff688f6f1e - rustc_query_impl[45896b7db3cc92f1]::query_callbacks::diagnostic_hir_wf_check    
  34:     0x7fff687c5ab1 - <rustc_query_impl[45896b7db3cc92f1]::queries::diagnostic_hir_wf_check as rustc_query_system[ea294a3d7add80ba]::query::config::QueryDescription<rustc_query_impl[45896b7db3cc92f1]::plumbing::QueryCtxt>>::describe
  35:     0x7fff686bfbe1 - <rustc_mir_dataflow[204209cfb57e373]::framework::engine::RustcMirAttrs>::output_path
  36:     0x7fff687f60d2 - <rustc_query_impl[45896b7db3cc92f1]::Queries as rustc_middle[ff7e0ef075a5e190]::ty::query::QueryEngine>::try_mark_green
  37:     0x7fff6513d7ca - <rustc_driver[ac5015f618b0d469]::args::Error as core[a1a53ba5778ea5ee]::fmt::Debug>::fmt
  38:     0x7fff650f39ec - <rustc_middle[ff7e0ef075a5e190]::ty::SymbolName as core[a1a53ba5778ea5ee]::fmt::Display>::fmt
  39:     0x7fff650e51db - <chalk_engine[160540b4fe62f842]::TableIndex>::increment
  40:     0x7fff651113f1 - <rustc_middle[ff7e0ef075a5e190]::ty::SymbolName as core[a1a53ba5778ea5ee]::fmt::Display>::fmt
  41:     0x7fff650f0a03 - rustc_driver[ac5015f618b0d469]::pretty::print_after_hir_lowering
  42:     0x7fff65158748 - <rustc_driver[ac5015f618b0d469]::args::Error as core[a1a53ba5778ea5ee]::fmt::Debug>::fmt
  43:     0x7fffc20fc39c - std::sys::windows::thread::Thread::new::h5e9e6e3c717bd931
  44:     0x7ff80faa7034 - BaseThreadInitThunk
  45:     0x7ff8116e2651 - RtlUserThreadStart

[workingjubilee]

Closing as a probable duplicate of #91696