type parameter `Self/#0` (Self/0) out of range when substituting

[bigdogs]

cargo clippy runs failed on nightly 2022-10-17. Not sure if this is a known issue.

error: internal compiler error: compiler\rustc_middle\src\ty\subst.rs:695:9: type parameter `Self/#0` (Self/0) out of range when substituting, substs=[]

thread 'rustc' panicked at 'Box<dyn Any>', /rustc/06f049a35535d26d5c8426d4f782f78277b41aa1\compiler\rustc_errors\src\lib.rs:1516:9
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

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

note: we would appreciate a bug report: https://github.com/rust-lang/rust-clippy/issues/new

note: Clippy version: clippy 0.1.66 (06f049a3 2022-10-17)

query stack during panic:
#0 [analysis] running analysis passes on this crate
end of query stack

[Alexendoo]

Thanks @bigdogs

Is the code for this public anywhere? Or if not are you able to show the output of running with RUST_BACKTRACE=1?

[bigdogs]

@Alexendoo hi, sorry for that it's our private project :(, here is the backtrace, hope it helps

error: internal compiler error: compiler\rustc_middle\src\ty\subst.rs:695:9: type parameter `Self/#0` (Self/0) out of range when substituting, substs=[]

thread 'rustc' panicked at 'Box<dyn Any>', /rustc/06f049a35535d26d5c8426d4f782f78277b41aa1\compiler\rustc_errors\src\lib.rs:1516:9
stack backtrace:
   0:     0x7ffc467597f2 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h482ef523d2d08fee
   1:     0x7ffc467950fb - core::fmt::write::h8037f092d83f7802
   2:     0x7ffc4674be1a - <std::io::IoSlice as core::fmt::Debug>::fmt::hf5b3748c929449b4
   3:     0x7ffc4675953b - std::sys::common::alloc::realloc_fallback::h6e0fe1395e704b6a
   4:     0x7ffc4675ce99 - std::panicking::default_hook::h1d0cc73c71564703
   5:     0x7ffc4675cb1a - std::panicking::default_hook::h1d0cc73c71564703
   6:     0x7ff610bd73a3 - <unknown>
   7:     0x7ffc4675d7f0 - std::panicking::rust_panic_with_hook::h6e788efc95c397cb
   8:     0x7ffc40a78f13 - <rustc_middle[88b50f213d6e6aad]::ty::context::TyCtxt>::_intern_bound_variable_kinds
   9:     0x7ffc40a78289 - <rustc_middle[88b50f213d6e6aad]::ty::context::TyCtxt>::_intern_bound_variable_kinds
  10:     0x7ffc40a44259 - <rustc_middle[88b50f213d6e6aad]::ty::sty::ExistentialProjection as rustc_middle[88b50f213d6e6aad]::ty::context::Lift>::lift_to_tcx
  11:     0x7ffc40a78279 - <rustc_middle[88b50f213d6e6aad]::ty::context::TyCtxt>::_intern_bound_variable_kinds
  12:     0x7ffc40a76ae4 - <rustc_middle[88b50f213d6e6aad]::ty::context::TyCtxt>::_intern_bound_variable_kinds
  13:     0x7ffc40a763e2 - <rustc_middle[88b50f213d6e6aad]::ty::context::TyCtxt>::_intern_bound_variable_kinds
  14:     0x7ffc40aba377 - <&rustc_middle[88b50f213d6e6aad]::ty::list::List<rustc_middle[88b50f213d6e6aad]::ty::Ty> as rustc_middle[88b50f213d6e6aad]::ty::context::Lift>::lift_to_tcx
  15:     0x7ffc40aba618 - rustc_middle[88b50f213d6e6aad]::util::bug::bug_fmt
  16:     0x7ffc40aba595 - rustc_middle[88b50f213d6e6aad]::util::bug::bug_fmt
  17:     0x7ffc40aba093 - <rustc_middle[88b50f213d6e6aad]::ty::list::List<rustc_middle[88b50f213d6e6aad]::ty::subst::GenericArg>>::try_as_type_list
  18:     0x7ffc3e6d37d8 - <rustc_middle[88b50f213d6e6aad]::ty::subst::SubstFolder as rustc_middle[88b50f213d6e6aad]::ty::fold::TypeFolder>::fold_ty
  19:     0x7ff610d8404e - <unknown>
  20:     0x7ff610e1ec0a - <unknown>
  21:     0x7ff610e5279d - <unknown>
  22:     0x7ff610d99aec - <unknown>
  23:     0x7ff610d987aa - <unknown>
  24:     0x7ff610df64ad - <unknown>
  25:     0x7ffc40847db5 - <rustc_lint[29620f12027d6b16]::late::LateLintPassObjects as rustc_lint[29620f12027d6b16]::passes::LateLintPass>::check_expr
  26:     0x7ffc3e897e8e - rustc_interface[2957e14ec90fea7d]::util::rustc_path
  27:     0x7ffc3e89dce7 - rustc_interface[2957e14ec90fea7d]::util::rustc_path
  28:     0x7ffc3e897e99 - rustc_interface[2957e14ec90fea7d]::util::rustc_path
  29:     0x7ffc3e89dce7 - rustc_interface[2957e14ec90fea7d]::util::rustc_path
  30:     0x7ffc3e897e99 - rustc_interface[2957e14ec90fea7d]::util::rustc_path
  31:     0x7ffc3e89ddc8 - rustc_interface[2957e14ec90fea7d]::util::rustc_path
  32:     0x7ffc3e897e99 - rustc_interface[2957e14ec90fea7d]::util::rustc_path
  33:     0x7ffc3e89df60 - rustc_interface[2957e14ec90fea7d]::util::rustc_path
  34:     0x7ffc3e897e99 - rustc_interface[2957e14ec90fea7d]::util::rustc_path
  35:     0x7ffc3e89dce7 - rustc_interface[2957e14ec90fea7d]::util::rustc_path
  36:     0x7ffc3e897e99 - rustc_interface[2957e14ec90fea7d]::util::rustc_path
  37:     0x7ffc3e897fca - rustc_interface[2957e14ec90fea7d]::util::rustc_path
  38:     0x7ffc3e897e99 - rustc_interface[2957e14ec90fea7d]::util::rustc_path
  39:     0x7ffc3e8982bb - rustc_interface[2957e14ec90fea7d]::util::rustc_path
  40:     0x7ffc3e89849e - rustc_interface[2957e14ec90fea7d]::util::rustc_path
  41:     0x7ffc3e89d02a - rustc_interface[2957e14ec90fea7d]::util::rustc_path
  42:     0x7ffc3e898cf4 - rustc_interface[2957e14ec90fea7d]::util::rustc_path
  43:     0x7ffc3e89e1d3 - rustc_interface[2957e14ec90fea7d]::util::rustc_path
  44:     0x7ffc3e898a38 - rustc_interface[2957e14ec90fea7d]::util::rustc_path
  45:     0x7ffc3e89d919 - rustc_interface[2957e14ec90fea7d]::util::rustc_path
  46:     0x7ffc3e89e21d - rustc_interface[2957e14ec90fea7d]::util::rustc_path
  47:     0x7ffc3e898a38 - rustc_interface[2957e14ec90fea7d]::util::rustc_path
  48:     0x7ffc3e89d919 - rustc_interface[2957e14ec90fea7d]::util::rustc_path
  49:     0x7ffc3e89e21d - rustc_interface[2957e14ec90fea7d]::util::rustc_path
  50:     0x7ffc3e898a38 - rustc_interface[2957e14ec90fea7d]::util::rustc_path
  51:     0x7ffc3e89d919 - rustc_interface[2957e14ec90fea7d]::util::rustc_path
  52:     0x7ffc3e89e21d - rustc_interface[2957e14ec90fea7d]::util::rustc_path
  53:     0x7ffc3e898a38 - rustc_interface[2957e14ec90fea7d]::util::rustc_path
  54:     0x7ffc3e89d919 - rustc_interface[2957e14ec90fea7d]::util::rustc_path
  55:     0x7ffc3e859346 - rustc_interface[2957e14ec90fea7d]::interface::try_print_query_stack
  56:     0x7ffc3e897b4d - rustc_interface[2957e14ec90fea7d]::util::rustc_path
  57:     0x7ffc3cf574ba - once_cell[389b5cc3a148d201]::imp::initialize_or_wait
  58:     0x7ffc3c059b78 - <rustc_interface[2957e14ec90fea7d]::passes::boxed_resolver::BoxedResolver>::to_resolver_outputs
  59:     0x7ffc3c05499c - <rustc_interface[2957e14ec90fea7d]::passes::boxed_resolver::BoxedResolver>::to_resolver_outputs
  60:     0x7ffc3c064b2c - rustc_interface[2957e14ec90fea7d]::util::commit_date_str
  61:     0x7ffc3c056bcb - <rustc_interface[2957e14ec90fea7d]::passes::boxed_resolver::BoxedResolver>::to_resolver_outputs
  62:     0x7ffc3c06a8bd - rustc_interface[2957e14ec90fea7d]::passes::analysis
  63:     0x7ffc3ca580be - rustc_query_impl[19b498cdebeee058]::profiling_support::alloc_self_profile_query_strings
  64:     0x7ffc3cac1ab9 - <&[(rustc_middle[88b50f213d6e6aad]::middle::exported_symbols::ExportedSymbol, rustc_middle[88b50f213d6e6aad]::middle::exported_symbols::SymbolExportInfo)] as rustc_serialize[f19ab2f20457f212]::serialize::Decodable<rustc_query_impl[19b498cdebeee058]::on_disk_cache::CacheDecoder>>::decode
  65:     0x7ffc3cb97efe - <&[(rustc_middle[88b50f213d6e6aad]::middle::exported_symbols::ExportedSymbol, rustc_middle[88b50f213d6e6aad]::middle::exported_symbols::SymbolExportInfo)] as rustc_serialize[f19ab2f20457f212]::serialize::Decodable<rustc_query_impl[19b498cdebeee058]::on_disk_cache::CacheDecoder>>::decode
  66:     0x7ffc3cbe7e66 - <&[(rustc_middle[88b50f213d6e6aad]::middle::exported_symbols::ExportedSymbol, rustc_middle[88b50f213d6e6aad]::middle::exported_symbols::SymbolExportInfo)] as rustc_serialize[f19ab2f20457f212]::serialize::Decodable<rustc_query_impl[19b498cdebeee058]::on_disk_cache::CacheDecoder>>::decode
  67:     0x7ffc3c028094 - <unknown>
  68:     0x7ffc3c0035a8 - <unknown>
  69:     0x7ffc3c0378fa - <rustc_middle[88b50f213d6e6aad]::ty::SymbolName as core[5c3625cf65bd79e3]::fmt::Debug>::fmt
  70:     0x7ffc3c005454 - <unknown>
  71:     0x7ffc3c037217 - rustc_driver[417e5e09b2b61d12]::args::arg_expand_all
  72:     0x7ffc3c0288f9 - <unknown>
  73:     0x7ffc3c020960 - <unknown>
  74:     0x7ffc4676e53c - std::sys::windows::thread::Thread::new::h358cd21a6b4bff06
  75:     0x7ffccb257034 - <unknown>
  76:     0x7ffccd122651 - RtlUserThreadStart

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

note: we would appreciate a bug report: https://github.com/rust-lang/rust-clippy/issues/new

note: Clippy version: clippy 0.1.66 (06f049a3 2022-10-17)

query stack during panic:
#0 [analysis] running analysis passes on this crate
end of query stack

[Alexendoo]

Ahh no worries. Unfortunate that the presumably clippy parts are showing as <unknown> 🤔

This might be another occurrence of the problem in #9505 . Check for any code that might trigger unnecessary_to_owned.

[bigdogs]

problem still exists on the latest clippy. nightly-2022-11-21 , Is there any workaround to skip the check of unnecceary_to_owned?

[bigdogs]

checked on nightly-2022-12-17, issued was fixed