ICE: index out of bounds: 0, compiler/rustc_middle/src/ty/sty.rs #109191

thread 'rustc' panicked at 'index out of bounds: the len is 0 but the index is 0', /rustc/1716932743a7b3705cbf0c34db0c4e070ed1930d/compiler/rustc_middle/src/ty/sty.rs:1388:37
stack backtrace:
   0:     0x7f06816dc51a - std::backtrace_rs::backtrace::libunwind::trace::hb525d69e070ade81
                               at /rustc/1716932743a7b3705cbf0c34db0c4e070ed1930d/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5
   1:     0x7f06816dc51a - std::backtrace_rs::backtrace::trace_unsynchronized::hc013ba6c022c8cc0
                               at /rustc/1716932743a7b3705cbf0c34db0c4e070ed1930d/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
   2:     0x7f06816dc51a - std::sys_common::backtrace::_print_fmt::hc99069d428720acc
                               at /rustc/1716932743a7b3705cbf0c34db0c4e070ed1930d/library/std/src/sys_common/backtrace.rs:65:5
   3:     0x7f06816dc51a - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h6b2dfd5fb54878e3
                               at /rustc/1716932743a7b3705cbf0c34db0c4e070ed1930d/library/std/src/sys_common/backtrace.rs:44:22
   4:     0x7f068173fc5e - core::fmt::write::he277a08b33a83db8
                               at /rustc/1716932743a7b3705cbf0c34db0c4e070ed1930d/library/core/src/fmt/mod.rs:1232:17
   5:     0x7f06816cf375 - std::io::Write::write_fmt::h6a5aa3320aae0280
                               at /rustc/1716932743a7b3705cbf0c34db0c4e070ed1930d/library/std/src/io/mod.rs:1684:15
   6:     0x7f06816dc2e5 - std::sys_common::backtrace::_print::h763b5adb4e9083ff
                               at /rustc/1716932743a7b3705cbf0c34db0c4e070ed1930d/library/std/src/sys_common/backtrace.rs:47:5
   7:     0x7f06816dc2e5 - std::sys_common::backtrace::print::h5a4028b32a3df8a2
                               at /rustc/1716932743a7b3705cbf0c34db0c4e070ed1930d/library/std/src/sys_common/backtrace.rs:34:9
   8:     0x7f06816df05f - std::panicking::default_hook::{{closure}}::h0c8c81b9641f8819
                               at /rustc/1716932743a7b3705cbf0c34db0c4e070ed1930d/library/std/src/panicking.rs:271:22
   9:     0x7f06816ded9b - std::panicking::default_hook::h5bf7cd33f355743b
                               at /rustc/1716932743a7b3705cbf0c34db0c4e070ed1930d/library/std/src/panicking.rs:290:9
  10:     0x7f06804577f5 - rustc_driver_impl[aa1a5107c9e4d916]::DEFAULT_HOOK::{closure#0}::{closure#0}
  11:     0x7f06816df89d - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h31d3f61cac634989
                               at /rustc/1716932743a7b3705cbf0c34db0c4e070ed1930d/library/alloc/src/boxed.rs:2002:9
  12:     0x7f06816df89d - std::panicking::rust_panic_with_hook::h11aed2986f5c5154
                               at /rustc/1716932743a7b3705cbf0c34db0c4e070ed1930d/library/std/src/panicking.rs:696:13
  13:     0x7f06816df619 - std::panicking::begin_panic_handler::{{closure}}::h5030a267c334a760
                               at /rustc/1716932743a7b3705cbf0c34db0c4e070ed1930d/library/std/src/panicking.rs:583:13
  14:     0x7f06816dc986 - std::sys_common::backtrace::__rust_end_short_backtrace::hf19b9029d2a05570
                               at /rustc/1716932743a7b3705cbf0c34db0c4e070ed1930d/library/std/src/sys_common/backtrace.rs:150:18
  15:     0x7f06816df322 - rust_begin_unwind
                               at /rustc/1716932743a7b3705cbf0c34db0c4e070ed1930d/library/std/src/panicking.rs:579:5
  16:     0x7f068173bfb3 - core::panicking::panic_fmt::hc179041817e007c3
                               at /rustc/1716932743a7b3705cbf0c34db0c4e070ed1930d/library/core/src/panicking.rs:64:14
  17:     0x7f068173c1a2 - core::panicking::panic_bounds_check::hda6c0d7fc7289ef8
                               at /rustc/1716932743a7b3705cbf0c34db0c4e070ed1930d/library/core/src/panicking.rs:159:5
  18:     0x7f06805ebc7b - <rustc_middle[91c99f5af0859808]::ty::sty::Binder<rustc_middle[91c99f5af0859808]::ty::sty::FnSig>>::map_bound_ref::<<rustc_middle[91c99f5af0859808]::ty::sty::Binder<rustc_middle[91c99f5af0859808]::ty::sty::FnSig>>::input::{closure#0}, rustc_middle[91c99f5af0859808]::ty::Ty>
  19:     0x7f06805830b9 - <dyn rustc_hir_analysis[2cd7f2356faca1ef]::astconv::AstConv>::suggest_trait_fn_ty_for_impl_fn_infer
  20:     0x7f067f3a58f5 - <dyn rustc_hir_analysis[2cd7f2356faca1ef]::astconv::AstConv>::ty_of_fn::{closure#0}
  21:     0x7f067f265945 - rustc_hir_analysis[2cd7f2356faca1ef]::collect::fn_sig
  22:     0x7f067f263d50 - rustc_query_system[d086d80e7946fec]::query::plumbing::try_execute_query::<rustc_query_impl[4365cf0f327aa4bf]::queries::fn_sig, rustc_query_impl[4365cf0f327aa4bf]::plumbing::QueryCtxt>
  23:     0x7f067f2631c1 - <rustc_query_impl[4365cf0f327aa4bf]::Queries as rustc_middle[91c99f5af0859808]::ty::query::QueryEngine>::fn_sig
  24:     0x7f067ec898b5 - <rustc_hir_analysis[2cd7f2356faca1ef]::collect::CollectItemTypesVisitor as rustc_hir[2286395576989f03]::intravisit::Visitor>::visit_impl_item
  25:     0x7f067ec83e30 - <rustc_middle[91c99f5af0859808]::hir::map::Map>::visit_item_likes_in_module::<rustc_hir_analysis[2cd7f2356faca1ef]::collect::CollectItemTypesVisitor>
  26:     0x7f067ec83c1c - rustc_hir_analysis[2cd7f2356faca1ef]::collect::collect_mod_item_types
  27:     0x7f067fa9a0de - rustc_query_system[d086d80e7946fec]::query::plumbing::try_execute_query::<rustc_query_impl[4365cf0f327aa4bf]::queries::collect_mod_item_types, rustc_query_impl[4365cf0f327aa4bf]::plumbing::QueryCtxt>
  28:     0x7f067fa99c63 - <rustc_query_impl[4365cf0f327aa4bf]::Queries as rustc_middle[91c99f5af0859808]::ty::query::QueryEngine>::collect_mod_item_types
  29:     0x7f067e81fe33 - <rustc_session[66f881e4886b517]::session::Session>::track_errors::<rustc_hir_analysis[2cd7f2356faca1ef]::check_crate::{closure#0}, ()>
  30:     0x7f067e81c7b2 - rustc_hir_analysis[2cd7f2356faca1ef]::check_crate
  31:     0x7f067e8145e2 - rustc_interface[92ae9247c658ed28]::passes::analysis
  32:     0x7f067fc7b95c - rustc_query_system[d086d80e7946fec]::query::plumbing::try_execute_query::<rustc_query_impl[4365cf0f327aa4bf]::queries::analysis, rustc_query_impl[4365cf0f327aa4bf]::plumbing::QueryCtxt>
  33:     0x7f067fc7b650 - <rustc_query_impl[4365cf0f327aa4bf]::Queries as rustc_middle[91c99f5af0859808]::ty::query::QueryEngine>::analysis
  34:     0x7f067faa3369 - <rustc_middle[91c99f5af0859808]::ty::context::GlobalCtxt>::enter::<rustc_driver_impl[aa1a5107c9e4d916]::run_compiler::{closure#1}::{closure#2}::{closure#4}, core[93f4c45d685c579b]::result::Result<(), rustc_span[3a8ff7714ec0cd56]::ErrorGuaranteed>>
  35:     0x7f067f67cfa8 - rustc_span[3a8ff7714ec0cd56]::with_source_map::<core[93f4c45d685c579b]::result::Result<(), rustc_span[3a8ff7714ec0cd56]::ErrorGuaranteed>, rustc_interface[92ae9247c658ed28]::interface::run_compiler<core[93f4c45d685c579b]::result::Result<(), rustc_span[3a8ff7714ec0cd56]::ErrorGuaranteed>, rustc_driver_impl[aa1a5107c9e4d916]::run_compiler::{closure#1}>::{closure#0}::{closure#0}>
  36:     0x7f067f67420c - std[8d53a76fa3b550eb]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[92ae9247c658ed28]::util::run_in_thread_pool_with_globals<rustc_interface[92ae9247c658ed28]::interface::run_compiler<core[93f4c45d685c579b]::result::Result<(), rustc_span[3a8ff7714ec0cd56]::ErrorGuaranteed>, rustc_driver_impl[aa1a5107c9e4d916]::run_compiler::{closure#1}>::{closure#0}, core[93f4c45d685c579b]::result::Result<(), rustc_span[3a8ff7714ec0cd56]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[93f4c45d685c579b]::result::Result<(), rustc_span[3a8ff7714ec0cd56]::ErrorGuaranteed>>
  37:     0x7f067f673c3a - <<std[8d53a76fa3b550eb]::thread::Builder>::spawn_unchecked_<rustc_interface[92ae9247c658ed28]::util::run_in_thread_pool_with_globals<rustc_interface[92ae9247c658ed28]::interface::run_compiler<core[93f4c45d685c579b]::result::Result<(), rustc_span[3a8ff7714ec0cd56]::ErrorGuaranteed>, rustc_driver_impl[aa1a5107c9e4d916]::run_compiler::{closure#1}>::{closure#0}, core[93f4c45d685c579b]::result::Result<(), rustc_span[3a8ff7714ec0cd56]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[93f4c45d685c579b]::result::Result<(), rustc_span[3a8ff7714ec0cd56]::ErrorGuaranteed>>::{closure#1} as core[93f4c45d685c579b]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
  38:     0x7f06816e9793 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hb296ec1752427222
                               at /rustc/1716932743a7b3705cbf0c34db0c4e070ed1930d/library/alloc/src/boxed.rs:1988:9
  39:     0x7f06816e9793 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::ha3d23d73a848aedf
                               at /rustc/1716932743a7b3705cbf0c34db0c4e070ed1930d/library/alloc/src/boxed.rs:1988:9
  40:     0x7f06816e9793 - std::sys::unix::thread::Thread::new::thread_start::hdf09fab72a35a799
                               at /rustc/1716932743a7b3705cbf0c34db0c4e070ed1930d/library/std/src/sys/unix/thread.rs:108:17
  41:     0x7f067d067bb5 - <unknown>
  42:     0x7f067d0e9d90 - <unknown>
  43:                0x0 - <unknown>

error: 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 1.70.0-nightly (171693274 2023-03-14) running on x86_64-unknown-linux-gnu

query stack during panic:
#0 [fn_sig] computing function signature of `<impl at treereduce.out:5:1: 5:14>::bar`
#1 [collect_mod_item_types] collecting item types in top-level module
#2 [analysis] running analysis passes on this crate
end of query stack
error: aborting due to 3 previous errors

Some errors have detailed explanations: E0107, E0601.
For more information about an error, try `rustc --explain E0107`.