panic in unnecessary_literal_unwrap.rs

[camshaft]

https://play.rust-lang.org/?version=stable&mode=debug&edition=2021&gist=9d3464cdccdec08621e0df1a7df8fae5

pub fn test() -> u32 {
    let value = None;
    value.unwrap_or(123)
}

Results in the following:

thread 'rustc' panicked at 'index out of bounds: the len is 0 but the index is 0', src/tools/clippy/clippy_lints/src/methods/unnecessary_literal_unwrap.rs:103:36
stack backtrace:
   0:     0x7f43e9468fc1 - std::backtrace_rs::backtrace::libunwind::trace::hdbeb239dad3fe05b
                               at /rustc/31395ec38250b60b380fd3c27e94756aba3557de/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5
   1:     0x7f43e9468fc1 - std::backtrace_rs::backtrace::trace_unsynchronized::h0d5832c176f29d68
                               at /rustc/31395ec38250b60b380fd3c27e94756aba3557de/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
   2:     0x7f43e9468fc1 - std::sys_common::backtrace::_print_fmt::h693b93625fae6594
                               at /rustc/31395ec38250b60b380fd3c27e94756aba3557de/library/std/src/sys_common/backtrace.rs:65:5
   3:     0x7f43e9468fc1 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h8be7805a245ed733
                               at /rustc/31395ec38250b60b380fd3c27e94756aba3557de/library/std/src/sys_common/backtrace.rs:44:22
   4:     0x7f43e94cf49c - core::fmt::rt::Argument::fmt::ha09465f0c1b6fb28
                               at /rustc/31395ec38250b60b380fd3c27e94756aba3557de/library/core/src/fmt/rt.rs:138:9
   5:     0x7f43e94cf49c - core::fmt::write::h419380ed19a66504
                               at /rustc/31395ec38250b60b380fd3c27e94756aba3557de/library/core/src/fmt/mod.rs:1094:21
   6:     0x7f43e945b5ce - std::io::Write::write_fmt::h697a91a7bc6c66fd
                               at /rustc/31395ec38250b60b380fd3c27e94756aba3557de/library/std/src/io/mod.rs:1714:15
   7:     0x7f43e9468dd5 - std::sys_common::backtrace::_print::hcc84e4906b2cfc50
                               at /rustc/31395ec38250b60b380fd3c27e94756aba3557de/library/std/src/sys_common/backtrace.rs:47:5
   8:     0x7f43e9468dd5 - std::sys_common::backtrace::print::hc97c64af7e7979ca
                               at /rustc/31395ec38250b60b380fd3c27e94756aba3557de/library/std/src/sys_common/backtrace.rs:34:9
   9:     0x7f43e946be2a - std::panicking::panic_hook_with_disk_dump::{{closure}}::h45993653bb29d743
                               at /rustc/31395ec38250b60b380fd3c27e94756aba3557de/library/std/src/panicking.rs:278:22
  10:     0x7f43e946bac3 - std::panicking::panic_hook_with_disk_dump::h6a3f474df42ecdbe
                               at /rustc/31395ec38250b60b380fd3c27e94756aba3557de/library/std/src/panicking.rs:312:9
  11:     0x7f43ec687649 - <rustc_driver_impl[4cc18990ea388c2c]::install_ice_hook::{closure#0} as core[fc70c29feb60d78b]::ops::function::FnOnce<(&core[fc70c29feb60d78b]::panic::panic_info::PanicInfo,)>>::call_once::{shim:vtable#0}
  12:     0x7f43e946c6d0 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h165fe1e6dec08dab
                               at /rustc/31395ec38250b60b380fd3c27e94756aba3557de/library/alloc/src/boxed.rs:2021:9
  13:     0x7f43e946c6d0 - std::panicking::rust_panic_with_hook::h2d67ee3cc819491a
                               at /rustc/31395ec38250b60b380fd3c27e94756aba3557de/library/std/src/panicking.rs:733:13
  14:     0x7f43e946c457 - std::panicking::begin_panic_handler::{{closure}}::hb96e40d184f5738d
                               at /rustc/31395ec38250b60b380fd3c27e94756aba3557de/library/std/src/panicking.rs:621:13
  15:     0x7f43e9469426 - std::sys_common::backtrace::__rust_end_short_backtrace::h7b396c253251f100
                               at /rustc/31395ec38250b60b380fd3c27e94756aba3557de/library/std/src/sys_common/backtrace.rs:151:18
  16:     0x7f43e946c1a2 - rust_begin_unwind
                               at /rustc/31395ec38250b60b380fd3c27e94756aba3557de/library/std/src/panicking.rs:617:5
  17:     0x7f43e94cb853 - core::panicking::panic_fmt::h004846269750dc83
                               at /rustc/31395ec38250b60b380fd3c27e94756aba3557de/library/core/src/panicking.rs:67:14
  18:     0x7f43e94cb9b2 - core::panicking::panic_bounds_check::h8eba5d222766995e
                               at /rustc/31395ec38250b60b380fd3c27e94756aba3557de/library/core/src/panicking.rs:162:5
  19:     0x55a93f1c5624 - <clippy_utils[21eaa80f3d856778]::diagnostics::span_lint_and_then<rustc_lint[1f33ef38fc576923]::context::LateContext, rustc_span[276188d0befe557d]::span_encoding::Span, clippy_lints[328390dc73fb7bc9]::methods::unnecessary_literal_unwrap::check::{closure#1}>::{closure#0} as core[fc70c29feb60d78b]::ops::function::FnOnce<(&mut rustc_errors[ec2707f3c482dcf4]::diagnostic_builder::DiagnosticBuilder<()>,)>>::call_once::{shim:vtable#0}
  20:     0x55a93f1b3534 - rustc_middle[be7299d8622494ca]::lint::struct_lint_level::struct_lint_level_impl::<alloc[60930d8c9a7bb729]::string::String>
  21:     0x55a93f1ac5b9 - rustc_middle[be7299d8622494ca]::lint::struct_lint_level::<alloc[60930d8c9a7bb729]::string::String, clippy_utils[21eaa80f3d856778]::diagnostics::span_lint_and_then<rustc_lint[1f33ef38fc576923]::context::LateContext, rustc_span[276188d0befe557d]::span_encoding::Span, clippy_lints[328390dc73fb7bc9]::methods::unnecessary_literal_unwrap::check::{closure#1}>::{closure#0}>
  22:     0x55a93f1f0067 - <rustc_middle[be7299d8622494ca]::ty::context::TyCtxt>::struct_span_lint_hir::<rustc_span[276188d0befe557d]::span_encoding::Span, alloc[60930d8c9a7bb729]::string::String, clippy_utils[21eaa80f3d856778]::diagnostics::span_lint_and_then<rustc_lint[1f33ef38fc576923]::context::LateContext, rustc_span[276188d0befe557d]::span_encoding::Span, clippy_lints[328390dc73fb7bc9]::methods::unnecessary_literal_unwrap::check::{closure#1}>::{closure#0}>
  23:     0x55a93f1a5560 - clippy_utils[21eaa80f3d856778]::diagnostics::span_lint_and_then::<rustc_lint[1f33ef38fc576923]::context::LateContext, rustc_span[276188d0befe557d]::span_encoding::Span, clippy_lints[328390dc73fb7bc9]::methods::unnecessary_literal_unwrap::check::{closure#1}>
  24:     0x55a93f0a7526 - clippy_lints[328390dc73fb7bc9]::methods::unnecessary_literal_unwrap::check
  25:     0x55a93f27a922 - <clippy_lints[328390dc73fb7bc9]::methods::Methods>::check_methods
  26:     0x55a93f2769ac - <clippy_lints[328390dc73fb7bc9]::methods::Methods as rustc_lint[1f33ef38fc576923]::passes::LateLintPass>::check_expr
  27:     0x7f43ecab2f06 - <rustc_lint[1f33ef38fc576923]::early::RuntimeCombinedEarlyLintPass as rustc_lint[1f33ef38fc576923]::passes::EarlyLintPass>::check_generic_arg
  28:     0x7f43eca4cb67 - <rustc_lint[1f33ef38fc576923]::late::LateContextAndPass<rustc_lint[1f33ef38fc576923]::late::RuntimeCombinedLateLintPass> as rustc_hir[3793f6a056a90597]::intravisit::Visitor>::visit_expr
  29:     0x7f43eca4cd19 - <rustc_lint[1f33ef38fc576923]::late::LateContextAndPass<rustc_lint[1f33ef38fc576923]::late::RuntimeCombinedLateLintPass> as rustc_hir[3793f6a056a90597]::intravisit::Visitor>::visit_block
  30:     0x7f43eca4cb72 - <rustc_lint[1f33ef38fc576923]::late::LateContextAndPass<rustc_lint[1f33ef38fc576923]::late::RuntimeCombinedLateLintPass> as rustc_hir[3793f6a056a90597]::intravisit::Visitor>::visit_expr
  31:     0x7f43eca4d05a - <rustc_lint[1f33ef38fc576923]::late::LateContextAndPass<rustc_lint[1f33ef38fc576923]::late::RuntimeCombinedLateLintPass> as rustc_hir[3793f6a056a90597]::intravisit::Visitor>::visit_nested_body
  32:     0x7f43eca4d1f0 - <rustc_lint[1f33ef38fc576923]::late::LateContextAndPass<rustc_lint[1f33ef38fc576923]::late::RuntimeCombinedLateLintPass> as rustc_hir[3793f6a056a90597]::intravisit::Visitor>::visit_fn
  33:     0x7f43eca50293 - rustc_hir[3793f6a056a90597]::intravisit::walk_item::<rustc_lint[1f33ef38fc576923]::late::LateContextAndPass<rustc_lint[1f33ef38fc576923]::late::RuntimeCombinedLateLintPass>>
  34:     0x7f43eca4da8f - <rustc_lint[1f33ef38fc576923]::late::LateContextAndPass<rustc_lint[1f33ef38fc576923]::late::RuntimeCombinedLateLintPass> as rustc_hir[3793f6a056a90597]::intravisit::Visitor>::visit_nested_item
  35:     0x7f43eca4fb08 - rustc_hir[3793f6a056a90597]::intravisit::walk_mod::<rustc_lint[1f33ef38fc576923]::late::LateContextAndPass<rustc_lint[1f33ef38fc576923]::late::RuntimeCombinedLateLintPass>>
  36:     0x7f43ebb5640c - rustc_lint[1f33ef38fc576923]::late::late_lint_crate::<rustc_lint[1f33ef38fc576923]::BuiltinCombinedLateLintPass>
  37:     0x7f43ebb536a3 - <rustc_session[27ffd0f91dc1f7f3]::session::Session>::time::<(), rustc_interface[4590c8f94634ac8b]::passes::analysis::{closure#5}::{closure#1}::{closure#2}::{closure#0}>
  38:     0x7f43ebb5314b - <core[fc70c29feb60d78b]::panic::unwind_safe::AssertUnwindSafe<rustc_interface[4590c8f94634ac8b]::passes::analysis::{closure#5}::{closure#1}> as core[fc70c29feb60d78b]::ops::function::FnOnce<()>>::call_once
  39:     0x7f43ebb52b68 - <rustc_session[27ffd0f91dc1f7f3]::session::Session>::time::<(), rustc_interface[4590c8f94634ac8b]::passes::analysis::{closure#5}>
  40:     0x7f43ebb518e7 - rustc_interface[4590c8f94634ac8b]::passes::analysis
  41:     0x7f43ebb8094a - rustc_query_impl[874dfe5be29ea4b6]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[874dfe5be29ea4b6]::query_impl::analysis::dynamic_query::{closure#2}::{closure#0}, rustc_middle[be7299d8622494ca]::query::erase::Erased<[u8; 1usize]>>
  42:     0x7f43ebb80939 - <rustc_query_impl[874dfe5be29ea4b6]::query_impl::analysis::dynamic_query::{closure#2} as core[fc70c29feb60d78b]::ops::function::FnOnce<(rustc_middle[be7299d8622494ca]::ty::context::TyCtxt, ())>>::call_once
  43:     0x7f43ebd37c48 - rustc_query_system[564890d86981df37]::query::plumbing::try_execute_query::<rustc_query_impl[874dfe5be29ea4b6]::DynamicConfig<rustc_query_system[564890d86981df37]::query::caches::SingleCache<rustc_middle[be7299d8622494ca]::query::erase::Erased<[u8; 1usize]>>, false, false, false>, rustc_query_impl[874dfe5be29ea4b6]::plumbing::QueryCtxt, false>
  44:     0x7f43ebd379d7 - rustc_query_impl[874dfe5be29ea4b6]::query_impl::analysis::get_query_non_incr::__rust_end_short_backtrace
  45:     0x7f43eb9059b5 - <rustc_middle[be7299d8622494ca]::ty::context::GlobalCtxt>::enter::<rustc_driver_impl[4cc18990ea388c2c]::run_compiler::{closure#1}::{closure#2}::{closure#4}, core[fc70c29feb60d78b]::result::Result<(), rustc_span[276188d0befe557d]::ErrorGuaranteed>>
  46:     0x7f43eb904fe2 - <rustc_interface[4590c8f94634ac8b]::interface::Compiler>::enter::<rustc_driver_impl[4cc18990ea388c2c]::run_compiler::{closure#1}::{closure#2}, core[fc70c29feb60d78b]::result::Result<core[fc70c29feb60d78b]::option::Option<rustc_interface[4590c8f94634ac8b]::queries::Linker>, rustc_span[276188d0befe557d]::ErrorGuaranteed>>
  47:     0x7f43eb9021e4 - std[6c6be89d5af8698b]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[4590c8f94634ac8b]::util::run_in_thread_pool_with_globals<rustc_interface[4590c8f94634ac8b]::interface::run_compiler<core[fc70c29feb60d78b]::result::Result<(), rustc_span[276188d0befe557d]::ErrorGuaranteed>, rustc_driver_impl[4cc18990ea388c2c]::run_compiler::{closure#1}>::{closure#0}, core[fc70c29feb60d78b]::result::Result<(), rustc_span[276188d0befe557d]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[fc70c29feb60d78b]::result::Result<(), rustc_span[276188d0befe557d]::ErrorGuaranteed>>
  48:     0x7f43ebf01b0e - <<std[6c6be89d5af8698b]::thread::Builder>::spawn_unchecked_<rustc_interface[4590c8f94634ac8b]::util::run_in_thread_pool_with_globals<rustc_interface[4590c8f94634ac8b]::interface::run_compiler<core[fc70c29feb60d78b]::result::Result<(), rustc_span[276188d0befe557d]::ErrorGuaranteed>, rustc_driver_impl[4cc18990ea388c2c]::run_compiler::{closure#1}>::{closure#0}, core[fc70c29feb60d78b]::result::Result<(), rustc_span[276188d0befe557d]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[fc70c29feb60d78b]::result::Result<(), rustc_span[276188d0befe557d]::ErrorGuaranteed>>::{closure#1} as core[fc70c29feb60d78b]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
  49:     0x7f43e9476dc5 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::ha7a812df2522755c
                               at /rustc/31395ec38250b60b380fd3c27e94756aba3557de/library/alloc/src/boxed.rs:2007:9
  50:     0x7f43e9476dc5 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hb9951559ba9cd9f6
                               at /rustc/31395ec38250b60b380fd3c27e94756aba3557de/library/alloc/src/boxed.rs:2007:9
  51:     0x7f43e9476dc5 - std::sys::unix::thread::Thread::new::thread_start::h0ca6842f2b5c5e07
                               at /rustc/31395ec38250b60b380fd3c27e94756aba3557de/library/std/src/sys/unix/thread.rs:108:17
  52:     0x7f43e9331609 - start_thread
  53:     0x7f43e9105133 - clone
  54:                0x0 - <unknown>

[camshaft]

Sorry, I should have looked at the closed issues before opening. I just noticed this is a duplicate of #11099 and was already resolved.