ICE: ` 'index out of bounds: the len is 1 but the index is 1', compiler/rustc_lint/src/internal.rs:481:82`

[matthiaskrgr]

Code

rustc -Zuntable-options file.rs

fn parse_local() {
    struct_span_err(msg).emit();
}

Meta

rustc --version --verbose:

rustc 1.71.0-nightly (f9a6b7158 2023-05-05)
binary: rustc
commit-hash: f9a6b71580cd53dd4491d9bb6400f7ee841d9c22
commit-date: 2023-05-05
host: x86_64-unknown-linux-gnu
release: 1.71.0-nightly
LLVM version: 16.0.2

Error output

<output>

Backtrace

error[E0425]: cannot find value `msg` in this scope
 --> treereduce.out:2:20
  |
2 |    struct_span_err(msg).emit();
  |                    ^^^ not found in this scope

thread 'rustc' panicked at 'index out of bounds: the len is 1 but the index is 1', compiler/rustc_lint/src/internal.rs:481:82
stack backtrace:
   0:     0x7fc683f1e0d1 - std::backtrace_rs::backtrace::libunwind::trace::hc5cc5a7b57b58c57
                               at /rustc/f9a6b71580cd53dd4491d9bb6400f7ee841d9c22/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5
   1:     0x7fc683f1e0d1 - std::backtrace_rs::backtrace::trace_unsynchronized::h8c88bdc231d617c1
                               at /rustc/f9a6b71580cd53dd4491d9bb6400f7ee841d9c22/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
   2:     0x7fc683f1e0d1 - std::sys_common::backtrace::_print_fmt::h0e5dc0d56b79c5f7
                               at /rustc/f9a6b71580cd53dd4491d9bb6400f7ee841d9c22/library/std/src/sys_common/backtrace.rs:65:5
   3:     0x7fc683f1e0d1 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h973cecc960c48c9f
                               at /rustc/f9a6b71580cd53dd4491d9bb6400f7ee841d9c22/library/std/src/sys_common/backtrace.rs:44:22
   4:     0x7fc683f7ed9f - core::fmt::rt::Argument::fmt::he483a5677bdde3d9
                               at /rustc/f9a6b71580cd53dd4491d9bb6400f7ee841d9c22/library/core/src/fmt/rt.rs:138:9
   5:     0x7fc683f7ed9f - core::fmt::write::h17e471b2a1f54138
                               at /rustc/f9a6b71580cd53dd4491d9bb6400f7ee841d9c22/library/core/src/fmt/mod.rs:1094:21
   6:     0x7fc683f11111 - std::io::Write::write_fmt::hb44c5b0111a069d0
                               at /rustc/f9a6b71580cd53dd4491d9bb6400f7ee841d9c22/library/std/src/io/mod.rs:1712:15
   7:     0x7fc683f1dee5 - std::sys_common::backtrace::_print::h5923eda925dd6ba1
                               at /rustc/f9a6b71580cd53dd4491d9bb6400f7ee841d9c22/library/std/src/sys_common/backtrace.rs:47:5
   8:     0x7fc683f1dee5 - std::sys_common::backtrace::print::h566e5ff86e5942bd
                               at /rustc/f9a6b71580cd53dd4491d9bb6400f7ee841d9c22/library/std/src/sys_common/backtrace.rs:34:9
   9:     0x7fc683f20b77 - std::panicking::default_hook::{{closure}}::ha47eb115c9bbaf3b
  10:     0x7fc683f20964 - std::panicking::default_hook::h73f3c1afd91adbd8
                               at /rustc/f9a6b71580cd53dd4491d9bb6400f7ee841d9c22/library/std/src/panicking.rs:288:9
  11:     0x7fc682d837c5 - rustc_driver_impl[c0e409223ee7d3a7]::DEFAULT_HOOK::{closure#0}::{closure#0}
  12:     0x7fc683f21297 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h24ea620f6424be90
                               at /rustc/f9a6b71580cd53dd4491d9bb6400f7ee841d9c22/library/alloc/src/boxed.rs:1999:9
  13:     0x7fc683f21297 - std::panicking::rust_panic_with_hook::h8980a64edf93fb32
                               at /rustc/f9a6b71580cd53dd4491d9bb6400f7ee841d9c22/library/std/src/panicking.rs:695:13
  14:     0x7fc683f21017 - std::panicking::begin_panic_handler::{{closure}}::h6525d669adc9202e
                               at /rustc/f9a6b71580cd53dd4491d9bb6400f7ee841d9c22/library/std/src/panicking.rs:582:13
  15:     0x7fc683f1e516 - std::sys_common::backtrace::__rust_end_short_backtrace::h430e040c8a194032
                               at /rustc/f9a6b71580cd53dd4491d9bb6400f7ee841d9c22/library/std/src/sys_common/backtrace.rs:150:18
  16:     0x7fc683f20d82 - rust_begin_unwind
                               at /rustc/f9a6b71580cd53dd4491d9bb6400f7ee841d9c22/library/std/src/panicking.rs:578:5
  17:     0x7fc683f7b023 - core::panicking::panic_fmt::hbf5fcb80896261a7
                               at /rustc/f9a6b71580cd53dd4491d9bb6400f7ee841d9c22/library/core/src/panicking.rs:67:14
  18:     0x7fc683f7b182 - core::panicking::panic_bounds_check::h8bd6a5a617749418
                               at /rustc/f9a6b71580cd53dd4491d9bb6400f7ee841d9c22/library/core/src/panicking.rs:162:5
  19:     0x7fc68314126b - <core[ba2508254c353298]::slice::iter::Iter<(rustc_span[772d4278e54f258a]::symbol::Symbol, &thin_vec[2af43ab3db6bb794]::ThinVec<rustc_ast[bedbd59f126f6eff]::ptr::P<rustc_ast[bedbd59f126f6eff]::ast::Expr>>)> as core[ba2508254c353298]::iter::traits::iterator::Iterator>::all::<<rustc_lint[f589ffefbf661d2b]::internal::Diagnostics as rustc_lint[f589ffefbf661d2b]::passes::EarlyLintPass>::check_stmt::{closure#0}>
  20:     0x7fc683145537 - <rustc_lint[f589ffefbf661d2b]::internal::Diagnostics as rustc_lint[f589ffefbf661d2b]::passes::EarlyLintPass>::check_stmt
  21:     0x7fc683145b33 - <rustc_lint[f589ffefbf661d2b]::early::RuntimeCombinedEarlyLintPass as rustc_lint[f589ffefbf661d2b]::passes::EarlyLintPass>::check_stmt
  22:     0x7fc6830fdbc4 - <rustc_lint[f589ffefbf661d2b]::early::EarlyContextAndPass<rustc_lint[f589ffefbf661d2b]::early::RuntimeCombinedEarlyLintPass> as rustc_ast[bedbd59f126f6eff]::visit::Visitor>::visit_stmt
  23:     0x7fc68311dde7 - rustc_ast[bedbd59f126f6eff]::visit::walk_block::<rustc_lint[f589ffefbf661d2b]::early::EarlyContextAndPass<rustc_lint[f589ffefbf661d2b]::early::RuntimeCombinedEarlyLintPass>>
  24:     0x7fc6830ff3e5 - <rustc_lint[f589ffefbf661d2b]::early::EarlyContextAndPass<rustc_lint[f589ffefbf661d2b]::early::RuntimeCombinedEarlyLintPass> as rustc_ast[bedbd59f126f6eff]::visit::Visitor>::visit_fn
  25:     0x7fc68312076e - rustc_ast[bedbd59f126f6eff]::visit::walk_item::<rustc_lint[f589ffefbf661d2b]::early::EarlyContextAndPass<rustc_lint[f589ffefbf661d2b]::early::RuntimeCombinedEarlyLintPass>>
  26:     0x7fc6830fd8f2 - <rustc_lint[f589ffefbf661d2b]::early::EarlyContextAndPass<rustc_lint[f589ffefbf661d2b]::early::RuntimeCombinedEarlyLintPass> as rustc_ast[bedbd59f126f6eff]::visit::Visitor>::visit_item
  27:     0x7fc68311de2f - rustc_ast[bedbd59f126f6eff]::visit::walk_crate::<rustc_lint[f589ffefbf661d2b]::early::EarlyContextAndPass<rustc_lint[f589ffefbf661d2b]::early::RuntimeCombinedEarlyLintPass>>
  28:     0x7fc6830ee209 - <(&rustc_ast[bedbd59f126f6eff]::ast::Crate, &[rustc_ast[bedbd59f126f6eff]::ast::Attribute]) as rustc_lint[f589ffefbf661d2b]::early::EarlyCheckNode>::check::<rustc_lint[f589ffefbf661d2b]::early::RuntimeCombinedEarlyLintPass>
  29:     0x7fc6830fcc96 - rustc_lint[f589ffefbf661d2b]::early::check_ast_node_inner::<rustc_lint[f589ffefbf661d2b]::early::RuntimeCombinedEarlyLintPass, (&rustc_ast[bedbd59f126f6eff]::ast::Crate, &[rustc_ast[bedbd59f126f6eff]::ast::Attribute])>
  30:     0x7fc6823708c5 - rustc_lint[f589ffefbf661d2b]::early::check_ast_node::<rustc_lint[f589ffefbf661d2b]::BuiltinCombinedEarlyLintPass, (&rustc_ast[bedbd59f126f6eff]::ast::Crate, &[rustc_ast[bedbd59f126f6eff]::ast::Attribute])>
  31:     0x7fc68236ebb4 - rustc_interface[812d3fb677f9c4a2]::passes::early_lint_checks
  32:     0x7fc68250ac1a - rustc_query_system[2ad8c752138085b6]::query::plumbing::try_execute_query::<rustc_query_impl[ed33e76d3dd098ac]::queries::early_lint_checks, rustc_query_impl[ed33e76d3dd098ac]::plumbing::QueryCtxt>
  33:     0x7fc68250a8b3 - rustc_query_impl[ed33e76d3dd098ac]::get_query::early_lint_checks
  34:     0x7fc681a823bc - rustc_ast_lowering[973b6fb5ff52bbfc]::lower_to_hir
  35:     0x7fc68255ec9e - rustc_query_system[2ad8c752138085b6]::query::plumbing::try_execute_query::<rustc_query_impl[ed33e76d3dd098ac]::queries::hir_crate, rustc_query_impl[ed33e76d3dd098ac]::plumbing::QueryCtxt>
  36:     0x7fc68255e99a - rustc_query_impl[ed33e76d3dd098ac]::get_query::hir_crate
  37:     0x7fc68148f97c - rustc_query_system[2ad8c752138085b6]::query::plumbing::try_execute_query::<rustc_query_impl[ed33e76d3dd098ac]::queries::hir_attrs, rustc_query_impl[ed33e76d3dd098ac]::plumbing::QueryCtxt>
  38:     0x7fc680d9781f - <rustc_middle[121321bb00b342e0]::hir::map::Map>::attrs
  39:     0x7fc6825e06f3 - rustc_passes[ace0265fcbf17e34]::entry::entry_fn
  40:     0x7fc6825b49f1 - rustc_query_system[2ad8c752138085b6]::query::plumbing::try_execute_query::<rustc_query_impl[ed33e76d3dd098ac]::queries::entry_fn, rustc_query_impl[ed33e76d3dd098ac]::plumbing::QueryCtxt>
  41:     0x7fc6825b46ca - rustc_query_impl[ed33e76d3dd098ac]::get_query::entry_fn
  42:     0x7fc6822220d2 - <rustc_session[49ded5915b70c0ef]::session::Session>::time::<core[ba2508254c353298]::option::Option<(rustc_span[772d4278e54f258a]::def_id::DefId, rustc_session[49ded5915b70c0ef]::config::EntryFnType)>, rustc_interface[812d3fb677f9c4a2]::passes::analysis::{closure#0}::{closure#0}::{closure#0}>
  43:     0x7fc6822209a5 - <core[ba2508254c353298]::panic::unwind_safe::AssertUnwindSafe<rustc_interface[812d3fb677f9c4a2]::passes::analysis::{closure#0}::{closure#0}> as core[ba2508254c353298]::ops::function::FnOnce<()>>::call_once
  44:     0x7fc68221b62c - rustc_interface[812d3fb677f9c4a2]::passes::analysis
  45:     0x7fc682509e67 - rustc_query_system[2ad8c752138085b6]::query::plumbing::try_execute_query::<rustc_query_impl[ed33e76d3dd098ac]::queries::analysis, rustc_query_impl[ed33e76d3dd098ac]::plumbing::QueryCtxt>
  46:     0x7fc682509b83 - rustc_query_impl[ed33e76d3dd098ac]::get_query::analysis
  47:     0x7fc681fc456f - <rustc_middle[121321bb00b342e0]::ty::context::GlobalCtxt>::enter::<rustc_driver_impl[c0e409223ee7d3a7]::run_compiler::{closure#1}::{closure#2}::{closure#4}, core[ba2508254c353298]::result::Result<(), rustc_span[772d4278e54f258a]::ErrorGuaranteed>>
  48:     0x7fc681fc375f - <rustc_interface[812d3fb677f9c4a2]::interface::Compiler>::enter::<rustc_driver_impl[c0e409223ee7d3a7]::run_compiler::{closure#1}::{closure#2}, core[ba2508254c353298]::result::Result<core[ba2508254c353298]::option::Option<rustc_interface[812d3fb677f9c4a2]::queries::Linker>, rustc_span[772d4278e54f258a]::ErrorGuaranteed>>
  49:     0x7fc681fc0de5 - std[85c9d9b4ab7b6332]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[812d3fb677f9c4a2]::util::run_in_thread_pool_with_globals<rustc_interface[812d3fb677f9c4a2]::interface::run_compiler<core[ba2508254c353298]::result::Result<(), rustc_span[772d4278e54f258a]::ErrorGuaranteed>, rustc_driver_impl[c0e409223ee7d3a7]::run_compiler::{closure#1}>::{closure#0}, core[ba2508254c353298]::result::Result<(), rustc_span[772d4278e54f258a]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[ba2508254c353298]::result::Result<(), rustc_span[772d4278e54f258a]::ErrorGuaranteed>>
  50:     0x7fc68266aec5 - <<std[85c9d9b4ab7b6332]::thread::Builder>::spawn_unchecked_<rustc_interface[812d3fb677f9c4a2]::util::run_in_thread_pool_with_globals<rustc_interface[812d3fb677f9c4a2]::interface::run_compiler<core[ba2508254c353298]::result::Result<(), rustc_span[772d4278e54f258a]::ErrorGuaranteed>, rustc_driver_impl[c0e409223ee7d3a7]::run_compiler::{closure#1}>::{closure#0}, core[ba2508254c353298]::result::Result<(), rustc_span[772d4278e54f258a]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[ba2508254c353298]::result::Result<(), rustc_span[772d4278e54f258a]::ErrorGuaranteed>>::{closure#1} as core[ba2508254c353298]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
  51:     0x7fc683f2b775 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hde1dca3219a28205
                               at /rustc/f9a6b71580cd53dd4491d9bb6400f7ee841d9c22/library/alloc/src/boxed.rs:1985:9
  52:     0x7fc683f2b775 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h43282d999bed8647
                               at /rustc/f9a6b71580cd53dd4491d9bb6400f7ee841d9c22/library/alloc/src/boxed.rs:1985:9
  53:     0x7fc683f2b775 - std::sys::unix::thread::Thread::new::thread_start::ha392fc38c0d3e9d4
                               at /rustc/f9a6b71580cd53dd4491d9bb6400f7ee841d9c22/library/std/src/sys/unix/thread.rs:108:17
  54:     0x7fc67fa9cbb5 - <unknown>
  55:     0x7fc67fb1ed90 - <unknown>
  56:                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 1.71.0-nightly (f9a6b7158 2023-05-05) running on x86_64-unknown-linux-gnu

note: compiler flags: -Z unstable-options

query stack during panic:
thread 'rustc' panicked at 'already borrowed: BorrowMutError', /rustc/f9a6b71580cd53dd4491d9bb6400f7ee841d9c22/compiler/rustc_query_system/src/query/plumbing.rs:330:39
stack backtrace:
   0:     0x7fc683f1e0d1 - std::backtrace_rs::backtrace::libunwind::trace::hc5cc5a7b57b58c57
                               at /rustc/f9a6b71580cd53dd4491d9bb6400f7ee841d9c22/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5
   1:     0x7fc683f1e0d1 - std::backtrace_rs::backtrace::trace_unsynchronized::h8c88bdc231d617c1
                               at /rustc/f9a6b71580cd53dd4491d9bb6400f7ee841d9c22/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
   2:     0x7fc683f1e0d1 - std::sys_common::backtrace::_print_fmt::h0e5dc0d56b79c5f7
                               at /rustc/f9a6b71580cd53dd4491d9bb6400f7ee841d9c22/library/std/src/sys_common/backtrace.rs:65:5
   3:     0x7fc683f1e0d1 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h973cecc960c48c9f
                               at /rustc/f9a6b71580cd53dd4491d9bb6400f7ee841d9c22/library/std/src/sys_common/backtrace.rs:44:22
   4:     0x7fc683f7ed9f - core::fmt::rt::Argument::fmt::he483a5677bdde3d9
                               at /rustc/f9a6b71580cd53dd4491d9bb6400f7ee841d9c22/library/core/src/fmt/rt.rs:138:9
   5:     0x7fc683f7ed9f - core::fmt::write::h17e471b2a1f54138
                               at /rustc/f9a6b71580cd53dd4491d9bb6400f7ee841d9c22/library/core/src/fmt/mod.rs:1094:21
   6:     0x7fc683f11111 - std::io::Write::write_fmt::hb44c5b0111a069d0
                               at /rustc/f9a6b71580cd53dd4491d9bb6400f7ee841d9c22/library/std/src/io/mod.rs:1712:15
   7:     0x7fc683f1dee5 - std::sys_common::backtrace::_print::h5923eda925dd6ba1
                               at /rustc/f9a6b71580cd53dd4491d9bb6400f7ee841d9c22/library/std/src/sys_common/backtrace.rs:47:5
   8:     0x7fc683f1dee5 - std::sys_common::backtrace::print::h566e5ff86e5942bd
                               at /rustc/f9a6b71580cd53dd4491d9bb6400f7ee841d9c22/library/std/src/sys_common/backtrace.rs:34:9
   9:     0x7fc683f20b77 - std::panicking::default_hook::{{closure}}::ha47eb115c9bbaf3b
  10:     0x7fc683f20964 - std::panicking::default_hook::h73f3c1afd91adbd8
                               at /rustc/f9a6b71580cd53dd4491d9bb6400f7ee841d9c22/library/std/src/panicking.rs:288:9
  11:     0x7fc682d837c5 - rustc_driver_impl[c0e409223ee7d3a7]::DEFAULT_HOOK::{closure#0}::{closure#0}
  12:     0x7fc683f21297 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h24ea620f6424be90
                               at /rustc/f9a6b71580cd53dd4491d9bb6400f7ee841d9c22/library/alloc/src/boxed.rs:1999:9
  13:     0x7fc683f21297 - std::panicking::rust_panic_with_hook::h8980a64edf93fb32
                               at /rustc/f9a6b71580cd53dd4491d9bb6400f7ee841d9c22/library/std/src/panicking.rs:695:13
  14:     0x7fc683f21017 - std::panicking::begin_panic_handler::{{closure}}::h6525d669adc9202e
                               at /rustc/f9a6b71580cd53dd4491d9bb6400f7ee841d9c22/library/std/src/panicking.rs:582:13
  15:     0x7fc683f1e516 - std::sys_common::backtrace::__rust_end_short_backtrace::h430e040c8a194032
                               at /rustc/f9a6b71580cd53dd4491d9bb6400f7ee841d9c22/library/std/src/sys_common/backtrace.rs:150:18
  16:     0x7fc683f20d82 - rust_begin_unwind
                               at /rustc/f9a6b71580cd53dd4491d9bb6400f7ee841d9c22/library/std/src/panicking.rs:578:5
  17:     0x7fc683f7b023 - core::panicking::panic_fmt::hbf5fcb80896261a7
                               at /rustc/f9a6b71580cd53dd4491d9bb6400f7ee841d9c22/library/core/src/panicking.rs:67:14
  18:     0x7fc683f7b643 - core::result::unwrap_failed::haa291701862cd1bb
                               at /rustc/f9a6b71580cd53dd4491d9bb6400f7ee841d9c22/library/core/src/result.rs:1651:5
  19:     0x7fc68148fb3c - rustc_query_system[2ad8c752138085b6]::query::plumbing::try_execute_query::<rustc_query_impl[ed33e76d3dd098ac]::queries::hir_attrs, rustc_query_impl[ed33e76d3dd098ac]::plumbing::QueryCtxt>
  20:     0x7fc680d9781f - <rustc_middle[121321bb00b342e0]::hir::map::Map>::attrs
  21:     0x7fc6823ab2c4 - <rustc_middle[121321bb00b342e0]::middle::limits::provide::{closure#0} as core[ba2508254c353298]::ops::function::FnOnce<(rustc_middle[121321bb00b342e0]::ty::context::TyCtxt, ())>>::call_once
  22:     0x7fc682574a2e - rustc_query_system[2ad8c752138085b6]::query::plumbing::try_execute_query::<rustc_query_impl[ed33e76d3dd098ac]::queries::limits, rustc_query_impl[ed33e76d3dd098ac]::plumbing::QueryCtxt>
  23:     0x7fc682574684 - rustc_query_impl[ed33e76d3dd098ac]::get_query::limits
  24:     0x7fc680ef3978 - <rustc_middle[121321bb00b342e0]::ty::print::pretty::FmtPrinter>::new
  25:     0x7fc683231073 - <rustc_middle[121321bb00b342e0]::ty::context::TyCtxt>::def_path_str_with_substs::<rustc_hir[2a114f73b0e9925b]::hir_id::OwnerId>
  26:     0x7fc6832b6112 - rustc_middle[121321bb00b342e0]::query::descs::hir_attrs
  27:     0x7fc6836b188c - rustc_query_impl[ed33e76d3dd098ac]::plumbing::create_query_frame::<rustc_span[772d4278e54f258a]::def_id::LocalDefId>
  28:     0x7fc683710b7b - <rustc_query_impl[ed33e76d3dd098ac]::query_structs::hir_attrs::{closure#0}::{closure#0} as core[ba2508254c353298]::ops::function::FnOnce<(rustc_middle[121321bb00b342e0]::ty::context::TyCtxt, rustc_hir[2a114f73b0e9925b]::hir_id::OwnerId)>>::call_once
  29:     0x7fc6835cc7b6 - <rustc_query_system[2ad8c752138085b6]::query::plumbing::QueryState<rustc_hir[2a114f73b0e9925b]::hir_id::OwnerId, rustc_middle[121321bb00b342e0]::dep_graph::dep_node::DepKind>>::try_collect_active_jobs::<rustc_middle[121321bb00b342e0]::ty::context::TyCtxt>
  30:     0x7fc6836af21b - <rustc_query_impl[ed33e76d3dd098ac]::plumbing::QueryCtxt as rustc_query_system[2ad8c752138085b6]::query::QueryContext>::try_collect_active_jobs
  31:     0x7fc6830f94e5 - rustc_query_system[2ad8c752138085b6]::query::job::print_query_stack::<rustc_query_impl[ed33e76d3dd098ac]::plumbing::QueryCtxt>
  32:     0x7fc6830ecca9 - rustc_interface[812d3fb677f9c4a2]::interface::try_print_query_stack
  33:     0x7fc682d85ac2 - rustc_driver_impl[c0e409223ee7d3a7]::report_ice
  34:     0x7fc682d83809 - rustc_driver_impl[c0e409223ee7d3a7]::DEFAULT_HOOK::{closure#0}::{closure#0}
  35:     0x7fc683f21297 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h24ea620f6424be90
                               at /rustc/f9a6b71580cd53dd4491d9bb6400f7ee841d9c22/library/alloc/src/boxed.rs:1999:9
  36:     0x7fc683f21297 - std::panicking::rust_panic_with_hook::h8980a64edf93fb32
                               at /rustc/f9a6b71580cd53dd4491d9bb6400f7ee841d9c22/library/std/src/panicking.rs:695:13
  37:     0x7fc683f21017 - std::panicking::begin_panic_handler::{{closure}}::h6525d669adc9202e
                               at /rustc/f9a6b71580cd53dd4491d9bb6400f7ee841d9c22/library/std/src/panicking.rs:582:13
  38:     0x7fc683f1e516 - std::sys_common::backtrace::__rust_end_short_backtrace::h430e040c8a194032
                               at /rustc/f9a6b71580cd53dd4491d9bb6400f7ee841d9c22/library/std/src/sys_common/backtrace.rs:150:18
  39:     0x7fc683f20d82 - rust_begin_unwind
                               at /rustc/f9a6b71580cd53dd4491d9bb6400f7ee841d9c22/library/std/src/panicking.rs:578:5
  40:     0x7fc683f7b023 - core::panicking::panic_fmt::hbf5fcb80896261a7
                               at /rustc/f9a6b71580cd53dd4491d9bb6400f7ee841d9c22/library/core/src/panicking.rs:67:14
  41:     0x7fc683f7b182 - core::panicking::panic_bounds_check::h8bd6a5a617749418
                               at /rustc/f9a6b71580cd53dd4491d9bb6400f7ee841d9c22/library/core/src/panicking.rs:162:5
  42:     0x7fc68314126b - <core[ba2508254c353298]::slice::iter::Iter<(rustc_span[772d4278e54f258a]::symbol::Symbol, &thin_vec[2af43ab3db6bb794]::ThinVec<rustc_ast[bedbd59f126f6eff]::ptr::P<rustc_ast[bedbd59f126f6eff]::ast::Expr>>)> as core[ba2508254c353298]::iter::traits::iterator::Iterator>::all::<<rustc_lint[f589ffefbf661d2b]::internal::Diagnostics as rustc_lint[f589ffefbf661d2b]::passes::EarlyLintPass>::check_stmt::{closure#0}>
  43:     0x7fc683145537 - <rustc_lint[f589ffefbf661d2b]::internal::Diagnostics as rustc_lint[f589ffefbf661d2b]::passes::EarlyLintPass>::check_stmt
  44:     0x7fc683145b33 - <rustc_lint[f589ffefbf661d2b]::early::RuntimeCombinedEarlyLintPass as rustc_lint[f589ffefbf661d2b]::passes::EarlyLintPass>::check_stmt
  45:     0x7fc6830fdbc4 - <rustc_lint[f589ffefbf661d2b]::early::EarlyContextAndPass<rustc_lint[f589ffefbf661d2b]::early::RuntimeCombinedEarlyLintPass> as rustc_ast[bedbd59f126f6eff]::visit::Visitor>::visit_stmt
  46:     0x7fc68311dde7 - rustc_ast[bedbd59f126f6eff]::visit::walk_block::<rustc_lint[f589ffefbf661d2b]::early::EarlyContextAndPass<rustc_lint[f589ffefbf661d2b]::early::RuntimeCombinedEarlyLintPass>>
  47:     0x7fc6830ff3e5 - <rustc_lint[f589ffefbf661d2b]::early::EarlyContextAndPass<rustc_lint[f589ffefbf661d2b]::early::RuntimeCombinedEarlyLintPass> as rustc_ast[bedbd59f126f6eff]::visit::Visitor>::visit_fn
  48:     0x7fc68312076e - rustc_ast[bedbd59f126f6eff]::visit::walk_item::<rustc_lint[f589ffefbf661d2b]::early::EarlyContextAndPass<rustc_lint[f589ffefbf661d2b]::early::RuntimeCombinedEarlyLintPass>>
  49:     0x7fc6830fd8f2 - <rustc_lint[f589ffefbf661d2b]::early::EarlyContextAndPass<rustc_lint[f589ffefbf661d2b]::early::RuntimeCombinedEarlyLintPass> as rustc_ast[bedbd59f126f6eff]::visit::Visitor>::visit_item
  50:     0x7fc68311de2f - rustc_ast[bedbd59f126f6eff]::visit::walk_crate::<rustc_lint[f589ffefbf661d2b]::early::EarlyContextAndPass<rustc_lint[f589ffefbf661d2b]::early::RuntimeCombinedEarlyLintPass>>
  51:     0x7fc6830ee209 - <(&rustc_ast[bedbd59f126f6eff]::ast::Crate, &[rustc_ast[bedbd59f126f6eff]::ast::Attribute]) as rustc_lint[f589ffefbf661d2b]::early::EarlyCheckNode>::check::<rustc_lint[f589ffefbf661d2b]::early::RuntimeCombinedEarlyLintPass>
  52:     0x7fc6830fcc96 - rustc_lint[f589ffefbf661d2b]::early::check_ast_node_inner::<rustc_lint[f589ffefbf661d2b]::early::RuntimeCombinedEarlyLintPass, (&rustc_ast[bedbd59f126f6eff]::ast::Crate, &[rustc_ast[bedbd59f126f6eff]::ast::Attribute])>
  53:     0x7fc6823708c5 - rustc_lint[f589ffefbf661d2b]::early::check_ast_node::<rustc_lint[f589ffefbf661d2b]::BuiltinCombinedEarlyLintPass, (&rustc_ast[bedbd59f126f6eff]::ast::Crate, &[rustc_ast[bedbd59f126f6eff]::ast::Attribute])>
  54:     0x7fc68236ebb4 - rustc_interface[812d3fb677f9c4a2]::passes::early_lint_checks
  55:     0x7fc68250ac1a - rustc_query_system[2ad8c752138085b6]::query::plumbing::try_execute_query::<rustc_query_impl[ed33e76d3dd098ac]::queries::early_lint_checks, rustc_query_impl[ed33e76d3dd098ac]::plumbing::QueryCtxt>
  56:     0x7fc68250a8b3 - rustc_query_impl[ed33e76d3dd098ac]::get_query::early_lint_checks
  57:     0x7fc681a823bc - rustc_ast_lowering[973b6fb5ff52bbfc]::lower_to_hir
  58:     0x7fc68255ec9e - rustc_query_system[2ad8c752138085b6]::query::plumbing::try_execute_query::<rustc_query_impl[ed33e76d3dd098ac]::queries::hir_crate, rustc_query_impl[ed33e76d3dd098ac]::plumbing::QueryCtxt>
  59:     0x7fc68255e99a - rustc_query_impl[ed33e76d3dd098ac]::get_query::hir_crate
  60:     0x7fc68148f97c - rustc_query_system[2ad8c752138085b6]::query::plumbing::try_execute_query::<rustc_query_impl[ed33e76d3dd098ac]::queries::hir_attrs, rustc_query_impl[ed33e76d3dd098ac]::plumbing::QueryCtxt>
  61:     0x7fc680d9781f - <rustc_middle[121321bb00b342e0]::hir::map::Map>::attrs
  62:     0x7fc6825e06f3 - rustc_passes[ace0265fcbf17e34]::entry::entry_fn
  63:     0x7fc6825b49f1 - rustc_query_system[2ad8c752138085b6]::query::plumbing::try_execute_query::<rustc_query_impl[ed33e76d3dd098ac]::queries::entry_fn, rustc_query_impl[ed33e76d3dd098ac]::plumbing::QueryCtxt>
  64:     0x7fc6825b46ca - rustc_query_impl[ed33e76d3dd098ac]::get_query::entry_fn
  65:     0x7fc6822220d2 - <rustc_session[49ded5915b70c0ef]::session::Session>::time::<core[ba2508254c353298]::option::Option<(rustc_span[772d4278e54f258a]::def_id::DefId, rustc_session[49ded5915b70c0ef]::config::EntryFnType)>, rustc_interface[812d3fb677f9c4a2]::passes::analysis::{closure#0}::{closure#0}::{closure#0}>
  66:     0x7fc6822209a5 - <core[ba2508254c353298]::panic::unwind_safe::AssertUnwindSafe<rustc_interface[812d3fb677f9c4a2]::passes::analysis::{closure#0}::{closure#0}> as core[ba2508254c353298]::ops::function::FnOnce<()>>::call_once
  67:     0x7fc68221b62c - rustc_interface[812d3fb677f9c4a2]::passes::analysis
  68:     0x7fc682509e67 - rustc_query_system[2ad8c752138085b6]::query::plumbing::try_execute_query::<rustc_query_impl[ed33e76d3dd098ac]::queries::analysis, rustc_query_impl[ed33e76d3dd098ac]::plumbing::QueryCtxt>
  69:     0x7fc682509b83 - rustc_query_impl[ed33e76d3dd098ac]::get_query::analysis
  70:     0x7fc681fc456f - <rustc_middle[121321bb00b342e0]::ty::context::GlobalCtxt>::enter::<rustc_driver_impl[c0e409223ee7d3a7]::run_compiler::{closure#1}::{closure#2}::{closure#4}, core[ba2508254c353298]::result::Result<(), rustc_span[772d4278e54f258a]::ErrorGuaranteed>>
  71:     0x7fc681fc375f - <rustc_interface[812d3fb677f9c4a2]::interface::Compiler>::enter::<rustc_driver_impl[c0e409223ee7d3a7]::run_compiler::{closure#1}::{closure#2}, core[ba2508254c353298]::result::Result<core[ba2508254c353298]::option::Option<rustc_interface[812d3fb677f9c4a2]::queries::Linker>, rustc_span[772d4278e54f258a]::ErrorGuaranteed>>
  72:     0x7fc681fc0de5 - std[85c9d9b4ab7b6332]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[812d3fb677f9c4a2]::util::run_in_thread_pool_with_globals<rustc_interface[812d3fb677f9c4a2]::interface::run_compiler<core[ba2508254c353298]::result::Result<(), rustc_span[772d4278e54f258a]::ErrorGuaranteed>, rustc_driver_impl[c0e409223ee7d3a7]::run_compiler::{closure#1}>::{closure#0}, core[ba2508254c353298]::result::Result<(), rustc_span[772d4278e54f258a]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[ba2508254c353298]::result::Result<(), rustc_span[772d4278e54f258a]::ErrorGuaranteed>>
  73:     0x7fc68266aec5 - <<std[85c9d9b4ab7b6332]::thread::Builder>::spawn_unchecked_<rustc_interface[812d3fb677f9c4a2]::util::run_in_thread_pool_with_globals<rustc_interface[812d3fb677f9c4a2]::interface::run_compiler<core[ba2508254c353298]::result::Result<(), rustc_span[772d4278e54f258a]::ErrorGuaranteed>, rustc_driver_impl[c0e409223ee7d3a7]::run_compiler::{closure#1}>::{closure#0}, core[ba2508254c353298]::result::Result<(), rustc_span[772d4278e54f258a]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[ba2508254c353298]::result::Result<(), rustc_span[772d4278e54f258a]::ErrorGuaranteed>>::{closure#1} as core[ba2508254c353298]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
  74:     0x7fc683f2b775 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hde1dca3219a28205
                               at /rustc/f9a6b71580cd53dd4491d9bb6400f7ee841d9c22/library/alloc/src/boxed.rs:1985:9
  75:     0x7fc683f2b775 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h43282d999bed8647
                               at /rustc/f9a6b71580cd53dd4491d9bb6400f7ee841d9c22/library/alloc/src/boxed.rs:1985:9
  76:     0x7fc683f2b775 - std::sys::unix::thread::Thread::new::thread_start::ha392fc38c0d3e9d4
                               at /rustc/f9a6b71580cd53dd4491d9bb6400f7ee841d9c22/library/std/src/sys/unix/thread.rs:108:17
  77:     0x7fc67fa9cbb5 - <unknown>
  78:     0x7fc67fb1ed90 - <unknown>
  79:                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 1.71.0-nightly (f9a6b7158 2023-05-05) running on x86_64-unknown-linux-gnu

note: compiler flags: -Z unstable-options

query stack during panic:
#0 [limits] looking up limits
#1 [early_lint_checks] perform lints prior to macro expansion
#2 [hir_crate] getting the crate HIR
end of query stack
thread panicked while panicking. aborting.
[1]    3569776 IOT instruction  rustc treereduce.out -Zunstable-options

[compiler-errors]

@matthiaskrgr, I've seen this on a few ICE reports, but I'd recommend putting the first ICE in the title instead of any other subsequent ICE messages, since this:

thread 'rustc' panicked at 'index out of bounds: the len is 1 but the index is 1', compiler/rustc_lint/src/internal.rs:481:82

really is the root cause of this issue, and the second one (mentioning BorrowMutError) is just a side-effect of panicking during certain queries 😸

[matthiaskrgr]

searched toolchains nightly-2023-04-21 through nightly-2023-05-06
Regression in nightly-2023-04-27
Regression in 1c42cb4
Regression in rust-lang-ci@34bfa43
#108760 cc @clubby789

[clubby789]

Oops
@rustbot claim