Self/#0` (Self/0) out of range when substituting, substs=[]

[yaleman]

Summary

Found the offending code, which I have posted here: https://github.com/yaleman/clippy-2022-11-15/blob/main/src/lib.rs

If you change either of the clone calls to to_owned the bug appears.

good:

use std::path::PathBuf;
use std::str::FromStr;

use axum_server::tls_rustls::RustlsConfig;

pub async fn get_tls_config() -> Result<RustlsConfig, std::io::Error> {
    let testval1 = PathBuf::from_str("/test").unwrap();
    let testval2 = PathBuf::from_str("/test").unwrap();

    RustlsConfig::from_pem_file(testval1.clone(), testval2.clone()).await
}

bad:

use std::path::PathBuf;
use std::str::FromStr;

use axum_server::tls_rustls::RustlsConfig;

pub async fn get_tls_config() -> Result<RustlsConfig, std::io::Error> {
    let testval1 = PathBuf::from_str("/test").unwrap();
    let testval2 = PathBuf::from_str("/test").unwrap();

    RustlsConfig::from_pem_file(testval1.to_owned(), testval2.clone()).await
}

Version

rustc 1.65.0 (897e37553 2022-11-02)
binary: rustc
commit-hash: 897e37553bba8b42751c67658967889d11ecd120
commit-date: 2022-11-02
host: aarch64-apple-darwin
release: 1.65.0
LLVM version: 15.0.0

Error output

Backtrace

➜ RUST_BACKTRACE=full cargo clippy
  Checking clippy-2022-11-15 v0.1.0 (/Users/yaleman/Projects/clippy-2022-11-15)
error: internal compiler error: compiler/rustc_middle/src/ty/subst.rs:626:9: type parameter `Self/#0` (Self/0) out of range when substituting, substs=[]

thread 'rustc' panicked at 'Box<dyn Any>', /rustc/897e37553bba8b42751c67658967889d11ecd120/compiler/rustc_errors/src/lib.rs:1462:9
stack backtrace:
 0:        0x1054db670 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h2990a6f24ccff6db
 1:        0x105525c34 - core::fmt::write::h91497fd291c8b104
 2:        0x1054ce604 - std::io::Write::write_fmt::h23fa41342cffacf4
 3:        0x1054ddeec - std::panicking::default_hook::{{closure}}::hb41cdb784f4c17ac
 4:        0x1054ddc10 - std::panicking::default_hook::hdfe992d5fb29a991
 5:        0x10424dc3c - clippy_driver[3d26af9ed3b5abdc]::ICE_HOOK::{closure#0}::{closure#0}
 6:        0x1054de5b0 - std::panicking::rust_panic_with_hook::h2eb0e4b718773521
 7:        0x110eac1f4 - std[a5ccfe66677bd8c7]::panicking::begin_panic::<rustc_errors[c8454b970e154417]::ExplicitBug>::{closure#0}
 8:        0x110eaa77c - std[a5ccfe66677bd8c7]::sys_common::backtrace::__rust_end_short_backtrace::<std[a5ccfe66677bd8c7]::panicking::begin_panic<rustc_errors[c8454b970e154417]::ExplicitBug>::{closure#0}, !>
 9:        0x1113b6f48 - std[a5ccfe66677bd8c7]::panicking::begin_panic::<rustc_errors[c8454b970e154417]::ExplicitBug>
10:        0x110e0f904 - std[a5ccfe66677bd8c7]::panic::panic_any::<rustc_errors[c8454b970e154417]::ExplicitBug>
11:        0x110e0c34c - <rustc_errors[c8454b970e154417]::HandlerInner>::bug::<&alloc[3ba61535766dd904]::string::String>
12:        0x110e0bc50 - <rustc_errors[c8454b970e154417]::Handler>::bug::<&alloc[3ba61535766dd904]::string::String>
13:        0x110f38640 - rustc_middle[a5107c7538e61c53]::ty::context::tls::with_context_opt::<rustc_middle[a5107c7538e61c53]::ty::context::tls::with_opt<rustc_middle[a5107c7538e61c53]::util::bug::opt_span_bug_fmt<rustc_span[b9fdb1d50c47c7fe]::span_encoding::Span>::{closure#0}, ()>::{closure#0}, ()>
14:        0x110f3c994 - rustc_middle[a5107c7538e61c53]::util::bug::opt_span_bug_fmt::<rustc_span[b9fdb1d50c47c7fe]::span_encoding::Span>
15:        0x1113b7e40 - rustc_middle[a5107c7538e61c53]::util::bug::bug_fmt
16:        0x1113b8088 - <rustc_middle[a5107c7538e61c53]::ty::subst::SubstFolder>::type_param_out_of_range
17:        0x110f5ba70 - <rustc_middle[a5107c7538e61c53]::ty::subst::SubstFolder as rustc_middle[a5107c7538e61c53]::ty::fold::TypeFolder>::fold_ty
18:        0x104417f70 - <&rustc_middle[a5107c7538e61c53]::ty::list::List<rustc_middle[a5107c7538e61c53]::ty::subst::GenericArg> as rustc_middle[a5107c7538e61c53]::ty::fold::TypeFoldable>::try_fold_with::<rustc_middle[a5107c7538e61c53]::ty::subst::SubstFolder>
19:        0x104395034 - <rustc_middle[a5107c7538e61c53]::ty::PredicateKind as rustc_middle[a5107c7538e61c53]::ty::fold::TypeFoldable>::try_fold_with::<rustc_middle[a5107c7538e61c53]::ty::subst::SubstFolder>
20:        0x1044154e4 - <rustc_middle[a5107c7538e61c53]::ty::subst::SubstFolder as rustc_middle[a5107c7538e61c53]::ty::fold::FallibleTypeFolder>::try_fold_binder::<rustc_middle[a5107c7538e61c53]::ty::PredicateKind>
21:        0x1042dd72c - <core[75a5a00debbb3d3d]::iter::adapters::copied::Copied<core[75a5a00debbb3d3d]::slice::iter::Iter<rustc_middle[a5107c7538e61c53]::ty::Predicate>> as core[75a5a00debbb3d3d]::iter::traits::iterator::Iterator>::try_fold::<(), core[75a5a00debbb3d3d]::iter::adapters::filter::filter_try_fold<rustc_middle[a5107c7538e61c53]::ty::Predicate, (), core[75a5a00debbb3d3d]::ops::control_flow::ControlFlow<()>, clippy_lints[42ea88bd058be92]::methods::unnecessary_to_owned::can_change_type::{closure#5}, core[75a5a00debbb3d3d]::iter::traits::iterator::Iterator::any::check<rustc_middle[a5107c7538e61c53]::ty::Predicate, clippy_lints[42ea88bd058be92]::methods::unnecessary_to_owned::can_change_type::{closure#7}>::{closure#0}>::{closure#0}, core[75a5a00debbb3d3d]::ops::control_flow::ControlFlow<()>>
22:        0x1044b43bc - clippy_lints[42ea88bd058be92]::methods::unnecessary_to_owned::can_change_type
23:        0x1044b3864 - clippy_lints[42ea88bd058be92]::methods::unnecessary_to_owned::check
24:        0x1043ca904 - <clippy_lints[42ea88bd058be92]::methods::Methods as rustc_lint[aa6378de71b85db]::passes::LateLintPass>::check_expr
25:        0x110b85220 - <rustc_lint[aa6378de71b85db]::late::LateLintPassObjects as rustc_lint[aa6378de71b85db]::passes::LateLintPass>::check_expr
26:        0x10d327794 - rustc_hir[db6588c2747fedc8]::intravisit::walk_expr::<rustc_lint[aa6378de71b85db]::late::LateContextAndPass<rustc_lint[aa6378de71b85db]::late::LateLintPassObjects>>
27:        0x10d3277a0 - rustc_hir[db6588c2747fedc8]::intravisit::walk_expr::<rustc_lint[aa6378de71b85db]::late::LateContextAndPass<rustc_lint[aa6378de71b85db]::late::LateLintPassObjects>>
28:        0x10d327b68 - rustc_hir[db6588c2747fedc8]::intravisit::walk_expr::<rustc_lint[aa6378de71b85db]::late::LateContextAndPass<rustc_lint[aa6378de71b85db]::late::LateLintPassObjects>>
29:        0x10d322dcc - rustc_hir[db6588c2747fedc8]::intravisit::walk_block::<rustc_lint[aa6378de71b85db]::late::LateContextAndPass<rustc_lint[aa6378de71b85db]::late::LateLintPassObjects>>
30:        0x10d3274b8 - rustc_hir[db6588c2747fedc8]::intravisit::walk_expr::<rustc_lint[aa6378de71b85db]::late::LateContextAndPass<rustc_lint[aa6378de71b85db]::late::LateLintPassObjects>>
31:        0x10d327318 - rustc_hir[db6588c2747fedc8]::intravisit::walk_expr::<rustc_lint[aa6378de71b85db]::late::LateContextAndPass<rustc_lint[aa6378de71b85db]::late::LateLintPassObjects>>
32:        0x10d322dcc - rustc_hir[db6588c2747fedc8]::intravisit::walk_block::<rustc_lint[aa6378de71b85db]::late::LateContextAndPass<rustc_lint[aa6378de71b85db]::late::LateLintPassObjects>>
33:        0x10d3274b8 - rustc_hir[db6588c2747fedc8]::intravisit::walk_expr::<rustc_lint[aa6378de71b85db]::late::LateContextAndPass<rustc_lint[aa6378de71b85db]::late::LateLintPassObjects>>
34:        0x10d3270ac - rustc_hir[db6588c2747fedc8]::intravisit::walk_body::<rustc_lint[aa6378de71b85db]::late::LateContextAndPass<rustc_lint[aa6378de71b85db]::late::LateLintPassObjects>>
35:        0x10d38332c - <rustc_lint[aa6378de71b85db]::late::LateContextAndPass<rustc_lint[aa6378de71b85db]::late::LateLintPassObjects> as rustc_hir[db6588c2747fedc8]::intravisit::Visitor>::visit_nested_body
36:        0x10d327ce8 - rustc_hir[db6588c2747fedc8]::intravisit::walk_expr::<rustc_lint[aa6378de71b85db]::late::LateContextAndPass<rustc_lint[aa6378de71b85db]::late::LateLintPassObjects>>
37:        0x10d3277a0 - rustc_hir[db6588c2747fedc8]::intravisit::walk_expr::<rustc_lint[aa6378de71b85db]::late::LateContextAndPass<rustc_lint[aa6378de71b85db]::late::LateLintPassObjects>>
38:        0x10d3270ac - rustc_hir[db6588c2747fedc8]::intravisit::walk_body::<rustc_lint[aa6378de71b85db]::late::LateContextAndPass<rustc_lint[aa6378de71b85db]::late::LateLintPassObjects>>
39:        0x10d38332c - <rustc_lint[aa6378de71b85db]::late::LateContextAndPass<rustc_lint[aa6378de71b85db]::late::LateLintPassObjects> as rustc_hir[db6588c2747fedc8]::intravisit::Visitor>::visit_nested_body
40:        0x10d328f68 - rustc_hir[db6588c2747fedc8]::intravisit::walk_item::<rustc_lint[aa6378de71b85db]::late::LateContextAndPass<rustc_lint[aa6378de71b85db]::late::LateLintPassObjects>>
41:        0x10d3838f8 - <rustc_lint[aa6378de71b85db]::late::LateContextAndPass<rustc_lint[aa6378de71b85db]::late::LateLintPassObjects> as rustc_hir[db6588c2747fedc8]::intravisit::Visitor>::visit_nested_item
42:        0x10d382a48 - rustc_lint[aa6378de71b85db]::late::late_lint_pass_crate::<rustc_lint[aa6378de71b85db]::late::LateLintPassObjects>
43:        0x10d3822e4 - rustc_lint[aa6378de71b85db]::late::late_lint_crate::<rustc_lint[aa6378de71b85db]::BuiltinCombinedLateLintPass>
44:        0x10d353538 - <rustc_session[d9f8ead3a6f8da8f]::session::Session>::time::<(), rustc_lint[aa6378de71b85db]::late::check_crate<rustc_lint[aa6378de71b85db]::BuiltinCombinedLateLintPass, rustc_interface[64ac8d545596c047]::passes::analysis::{closure#5}::{closure#1}::{closure#2}::{closure#0}::{closure#0}>::{closure#0}::{closure#0}>
45:        0x10d35394c - <rustc_session[d9f8ead3a6f8da8f]::session::Session>::time::<(), rustc_interface[64ac8d545596c047]::passes::analysis::{closure#5}::{closure#1}::{closure#2}::{closure#0}>
46:        0x10d39b528 - <core[75a5a00debbb3d3d]::panic::unwind_safe::AssertUnwindSafe<rustc_interface[64ac8d545596c047]::passes::analysis::{closure#5}::{closure#1}> as core[75a5a00debbb3d3d]::ops::function::FnOnce<()>>::call_once
47:        0x10d355de0 - <rustc_session[d9f8ead3a6f8da8f]::session::Session>::time::<(), rustc_interface[64ac8d545596c047]::passes::analysis::{closure#5}>
48:        0x10d351188 - rustc_interface[64ac8d545596c047]::passes::analysis
49:        0x11040e0ec - <rustc_query_system[376554ccb6bbe62f]::dep_graph::graph::DepGraph<rustc_middle[a5107c7538e61c53]::dep_graph::dep_node::DepKind>>::with_task::<rustc_middle[a5107c7538e61c53]::ty::context::TyCtxt, (), core[75a5a00debbb3d3d]::result::Result<(), rustc_errors[c8454b970e154417]::ErrorGuaranteed>>
50:        0x11021c000 - rustc_query_system[376554ccb6bbe62f]::query::plumbing::try_execute_query::<rustc_query_impl[ebd438b5e01d582b]::plumbing::QueryCtxt, rustc_query_system[376554ccb6bbe62f]::query::caches::DefaultCache<(), core[75a5a00debbb3d3d]::result::Result<(), rustc_errors[c8454b970e154417]::ErrorGuaranteed>>>
51:        0x11028302c - rustc_query_system[376554ccb6bbe62f]::query::plumbing::get_query::<rustc_query_impl[ebd438b5e01d582b]::queries::analysis, rustc_query_impl[ebd438b5e01d582b]::plumbing::QueryCtxt>
52:        0x10d273054 - <rustc_interface[64ac8d545596c047]::passes::QueryContext>::enter::<rustc_driver[250dcea03822790c]::run_compiler::{closure#1}::{closure#2}::{closure#3}, core[75a5a00debbb3d3d]::result::Result<(), rustc_errors[c8454b970e154417]::ErrorGuaranteed>>
53:        0x10d2481b4 - rustc_interface[64ac8d545596c047]::interface::create_compiler_and_run::<core[75a5a00debbb3d3d]::result::Result<(), rustc_errors[c8454b970e154417]::ErrorGuaranteed>, rustc_driver[250dcea03822790c]::run_compiler::{closure#1}>
54:        0x10d2ab5e0 - <scoped_tls[1c31aea71029b747]::ScopedKey<rustc_span[b9fdb1d50c47c7fe]::SessionGlobals>>::set::<rustc_interface[64ac8d545596c047]::interface::run_compiler<core[75a5a00debbb3d3d]::result::Result<(), rustc_errors[c8454b970e154417]::ErrorGuaranteed>, rustc_driver[250dcea03822790c]::run_compiler::{closure#1}>::{closure#0}, core[75a5a00debbb3d3d]::result::Result<(), rustc_errors[c8454b970e154417]::ErrorGuaranteed>>
55:        0x10d276dc8 - std[a5ccfe66677bd8c7]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[64ac8d545596c047]::util::run_in_thread_pool_with_globals<rustc_interface[64ac8d545596c047]::interface::run_compiler<core[75a5a00debbb3d3d]::result::Result<(), rustc_errors[c8454b970e154417]::ErrorGuaranteed>, rustc_driver[250dcea03822790c]::run_compiler::{closure#1}>::{closure#0}, core[75a5a00debbb3d3d]::result::Result<(), rustc_errors[c8454b970e154417]::ErrorGuaranteed>>::{closure#0}, core[75a5a00debbb3d3d]::result::Result<(), rustc_errors[c8454b970e154417]::ErrorGuaranteed>>
56:        0x10d279c4c - <<std[a5ccfe66677bd8c7]::thread::Builder>::spawn_unchecked_<rustc_interface[64ac8d545596c047]::util::run_in_thread_pool_with_globals<rustc_interface[64ac8d545596c047]::interface::run_compiler<core[75a5a00debbb3d3d]::result::Result<(), rustc_errors[c8454b970e154417]::ErrorGuaranteed>, rustc_driver[250dcea03822790c]::run_compiler::{closure#1}>::{closure#0}, core[75a5a00debbb3d3d]::result::Result<(), rustc_errors[c8454b970e154417]::ErrorGuaranteed>>::{closure#0}, core[75a5a00debbb3d3d]::result::Result<(), rustc_errors[c8454b970e154417]::ErrorGuaranteed>>::{closure#1} as core[75a5a00debbb3d3d]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
57:        0x1054e6428 - std::sys::unix::thread::Thread::new::thread_start::hf682c03d0f237892
58:        0x1805e826c - __pthread_deallocate

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 0.1.65 (897e3755 2022-11-02)

query stack during panic:
#0 [analysis] running analysis passes on this crate
end of query stack
error: could not compile `clippy-2022-11-15`

[yaleman]

Updated this from the original report because I found a minimal example..

[smoelius]

I can reproduce the ICE with cargo clippy, but not with cargo +nightly clippy.

I suspect this was fixed by #9505.

[yaleman]

That does look like it's sorted in nightly, thanks!

[giraffate]

Thanks for the report!

I'm closing this because of #9852 (comment).