Stable ICE: assertion failed: (left == right) #77329

  Compiling playground v0.0.1 (/playground)
stack backtrace:
   0: backtrace::backtrace::libunwind::trace
             at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.46/src/backtrace/libunwind.rs:86
   1: backtrace::backtrace::trace_unsynchronized
             at /cargo/registry/src/github.com-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: rustc_driver::report_ice
  11: std::panicking::rust_panic_with_hook
             at src/libstd/panicking.rs:530
  12: rust_begin_unwind
             at src/libstd/panicking.rs:437
  13: std::panicking::begin_panic_fmt
             at src/libstd/panicking.rs:391
  14: rustc_middle::hir::map::collector::NodeCollector::insert_entry
  15: <rustc_middle::hir::map::collector::NodeCollector as rustc_hir::intravisit::Visitor>::visit_param
  16: rustc_hir::intravisit::walk_body
  17: rustc_hir::intravisit::walk_expr
  18: rustc_hir::intravisit::walk_block
  19: rustc_hir::intravisit::walk_expr
  20: rustc_hir::intravisit::walk_body
  21: rustc_hir::intravisit::walk_ty
  22: rustc_hir::intravisit::walk_assoc_type_binding
  23: rustc_hir::intravisit::walk_path
  24: rustc_hir::intravisit::Visitor::visit_param_bound
  25: rustc_hir::intravisit::walk_item
  26: <rustc_middle::hir::map::collector::NodeCollector as rustc_hir::intravisit::Visitor>::visit_item
  27: rustc_hir::intravisit::walk_ty
  28: rustc_hir::intravisit::walk_fn
  29: <rustc_middle::hir::map::collector::NodeCollector as rustc_hir::intravisit::Visitor>::visit_fn
  30: rustc_hir::intravisit::walk_item
  31: <rustc_middle::hir::map::collector::NodeCollector as rustc_hir::intravisit::Visitor>::visit_item
  32: rustc_middle::hir::map::index_hir
  33: rustc_query_system::dep_graph::graph::DepGraph<K>::with_task_impl
  34: rustc_data_structures::stack::ensure_sufficient_stack
  35: rustc_query_system::query::plumbing::get_query_impl
  36: core::ops::function::FnOnce::call_once
  37: rustc_query_system::dep_graph::graph::DepGraph<K>::with_task_impl
  38: rustc_data_structures::stack::ensure_sufficient_stack
  39: rustc_query_system::query::plumbing::get_query_impl
  40: rustc_middle::hir::map::Map::expect_item
  41: rustc_middle::hir::map::Map::visit_item_likes_in_module
  42: rustc_passes::hir_id_validator::check_crate
  43: rustc_interface::passes::analysis
  44: rustc_middle::ty::query::<impl rustc_query_system::query::config::QueryAccessors<rustc_middle::ty::context::TyCtxt> for rustc_middle::ty::query::queries::analysis>::compute
  45: rustc_query_system::dep_graph::graph::DepGraph<K>::with_task_impl
  46: rustc_query_system::query::plumbing::get_query_impl
  47: rustc_middle::ty::context::tls::enter_global
  48: rustc_interface::queries::<impl rustc_interface::interface::Compiler>::enter
  49: rustc_span::with_source_map
  50: rustc_interface::interface::create_compiler_and_run
  51: scoped_tls::ScopedKey<T>::set
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/blob/master/CONTRIBUTING.md#bug-reports

note: rustc 1.46.0 (04488afe3 2020-08-24) running on x86_64-unknown-linux-gnu

note: compiler flags: -C embed-bitcode=no -C codegen-units=1 -C debuginfo=2 --crate-type lib

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

query stack during panic:
#0 [index_hir] index HIR
#1 [hir_owner] HIR owner of `{{misc}}#0`
#2 [analysis] running analysis passes on this crate
end of query stack
error: could not compile `playground`.