Compiler error encountered when attempting to get the size of a string created from `[21u8; u32::MAX as usize]`

[chanced]

Code

fn main() {
    let string = String::from_utf8_lossy(&[21u8; u32::MAX as usize]).to_string();
    println!("{}", std::mem::size_of_val(string.as_str()));
}

Meta

rustc --version --verbose:

rustc 1.69.0 (84c898d65 2023-04-16)
binary: rustc
commit-hash: 84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc
commit-date: 2023-04-16
host: aarch64-apple-darwin
release: 1.69.0
LLVM version: 15.0.7

Error output

thread 'rustc' panicked at 'invalid enum variant tag while decoding `AllocDiscriminant`, expected 0..4', /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/compiler/rustc_middle/src/mir/interpret/mod.rs:195:10
stack backtrace:
   0:        0x104b68468 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h105074e3d85f800b
   1:        0x104bbb388 - core::fmt::write::h34766cf8fff7af1e
   2:        0x104b5e1e0 - std::io::Write::write_fmt::hd64c4cf6e7adea59
   3:        0x104b6827c - std::sys_common::backtrace::print::h2a6828a537036cf9
   4:        0x104b6ad04 - std::panicking::default_hook::{{closure}}::h4e82ce6ccef941b2
   5:        0x104b6aa5c - std::panicking::default_hook::h29f62f8795c5cb00
   6:        0x10cc3d74c - rustc_driver_impl[4da67b3d18d5a97a]::DEFAULT_HOOK::{closure#0}::{closure#0}
   7:        0x104b6b3fc - std::panicking::rust_panic_with_hook::h19862cbd0fbda7ba
   8:        0x104b6b1b4 - std::panicking::begin_panic_handler::{{closure}}::h3f3626935e1669fe
   9:        0x104b68888 - std::sys_common::backtrace::__rust_end_short_backtrace::h5054ef52bd507d0a
  10:        0x104b6af50 - _rust_begin_unwind
  11:        0x104be6608 - core::panicking::panic_fmt::h7e47e10600a90221
  12:        0x10fd81cb0 - <rustc_middle[a12d4e31e9c7c7b2]::mir::interpret::AllocDiscriminant as rustc_serialize[75a1f45f8c95edce]::serialize::Decodable<rustc_query_impl[4d60d89ac47f5f83]::on_disk_cache::CacheDecoder>>::decode
  13:        0x10fd62ad0 - <rustc_middle[a12d4e31e9c7c7b2]::mir::interpret::AllocDecodingSession>::decode_alloc_id::<rustc_query_impl[4d60d89ac47f5f83]::on_disk_cache::CacheDecoder>
  14:        0x10fe3c1b0 - <rustc_middle[a12d4e31e9c7c7b2]::mir::interpret::pointer::Pointer as rustc_serialize[75a1f45f8c95edce]::serialize::Decodable<rustc_query_impl[4d60d89ac47f5f83]::on_disk_cache::CacheDecoder>>::decode
  15:        0x10feb4d9c - <rustc_middle[a12d4e31e9c7c7b2]::mir::interpret::value::ConstValue as rustc_serialize[75a1f45f8c95edce]::serialize::Decodable<rustc_query_impl[4d60d89ac47f5f83]::on_disk_cache::CacheDecoder>>::decode
  16:        0x10fd5e698 - <core[446d629763b4aa]::result::Result<rustc_middle[a12d4e31e9c7c7b2]::mir::interpret::value::ConstValue, rustc_middle[a12d4e31e9c7c7b2]::mir::interpret::error::ErrorHandled> as rustc_serialize[75a1f45f8c95edce]::serialize::Decodable<rustc_query_impl[4d60d89ac47f5f83]::on_disk_cache::CacheDecoder>>::decode
  17:        0x10fdd147c - <rustc_query_impl[4d60d89ac47f5f83]::on_disk_cache::OnDiskCache>::try_load_query_result::<core[446d629763b4aa]::result::Result<rustc_middle[a12d4e31e9c7c7b2]::mir::interpret::value::ConstValue, rustc_middle[a12d4e31e9c7c7b2]::mir::interpret::error::ErrorHandled>>
  18:        0x10fcf65f0 - <<rustc_query_impl[4d60d89ac47f5f83]::queries::eval_to_const_value_raw as rustc_query_system[4ec8b7e6ed7d2b80]::query::config::QueryConfig<rustc_query_impl[4d60d89ac47f5f83]::plumbing::QueryCtxt>>::try_load_from_disk::{closure#0} as core[446d629763b4aa]::ops::function::FnOnce<(rustc_query_impl[4d60d89ac47f5f83]::plumbing::QueryCtxt, rustc_query_system[4ec8b7e6ed7d2b80]::dep_graph::serialized::SerializedDepNodeIndex)>>::call_once
  19:        0x10fd7ad3c - <rustc_middle[a12d4e31e9c7c7b2]::dep_graph::dep_node::DepKind as rustc_query_system[4ec8b7e6ed7d2b80]::dep_graph::DepKind>::with_deps::<rustc_query_system[4ec8b7e6ed7d2b80]::query::plumbing::try_load_from_disk_and_cache_in_memory<rustc_query_impl[4d60d89ac47f5f83]::queries::eval_to_const_value_raw, rustc_query_impl[4d60d89ac47f5f83]::plumbing::QueryCtxt>::{closure#0}, core[446d629763b4aa]::option::Option<core[446d629763b4aa]::result::Result<rustc_middle[a12d4e31e9c7c7b2]::mir::interpret::value::ConstValue, rustc_middle[a12d4e31e9c7c7b2]::mir::interpret::error::ErrorHandled>>>
  20:        0x10fc8b95c - rustc_query_system[4ec8b7e6ed7d2b80]::query::plumbing::try_execute_query::<rustc_query_impl[4d60d89ac47f5f83]::queries::eval_to_const_value_raw, rustc_query_impl[4d60d89ac47f5f83]::plumbing::QueryCtxt>
  21:        0x10fd99d68 - <rustc_query_impl[4d60d89ac47f5f83]::Queries as rustc_middle[a12d4e31e9c7c7b2]::ty::query::QueryEngine>::eval_to_const_value_raw
  22:        0x110886d78 - <rustc_middle[a12d4e31e9c7c7b2]::ty::context::TyCtxt>::const_eval_global_id
  23:        0x11088673c - <rustc_middle[a12d4e31e9c7c7b2]::ty::context::TyCtxt>::const_eval_resolve
  24:        0x10f1b7494 - <rustc_monomorphize[ba23129770f20443]::collector::MirNeighborCollector as rustc_middle[a12d4e31e9c7c7b2]::mir::visit::Visitor>::visit_constant
  25:        0x10f1b3f80 - <rustc_monomorphize[ba23129770f20443]::collector::MirNeighborCollector as rustc_middle[a12d4e31e9c7c7b2]::mir::visit::Visitor>::visit_operand
  26:        0x10f1b2ee0 - <rustc_monomorphize[ba23129770f20443]::collector::MirNeighborCollector as rustc_middle[a12d4e31e9c7c7b2]::mir::visit::Visitor>::visit_rvalue
  27:        0x10f1b7fa8 - rustc_monomorphize[ba23129770f20443]::collector::collect_neighbours
  28:        0x10f1b6a08 - rustc_monomorphize[ba23129770f20443]::collector::collect_items_rec
  29:        0x10f1b6e08 - rustc_monomorphize[ba23129770f20443]::collector::collect_items_rec
  30:        0x10f1af7a8 - <core[446d629763b4aa]::panic::unwind_safe::AssertUnwindSafe<rustc_data_structures[a49ab2b4a1c20397]::sync::par_for_each_in<alloc[f251364f33aae5a4]::vec::Vec<rustc_middle[a12d4e31e9c7c7b2]::mir::mono::MonoItem>, rustc_monomorphize[ba23129770f20443]::collector::collect_crate_mono_items::{closure#1}::{closure#0}>::{closure#0}::{closure#0}> as core[446d629763b4aa]::ops::function::FnOnce<()>>::call_once
  31:        0x10f1a9398 - rustc_data_structures[a49ab2b4a1c20397]::sync::par_for_each_in::<alloc[f251364f33aae5a4]::vec::Vec<rustc_middle[a12d4e31e9c7c7b2]::mir::mono::MonoItem>, rustc_monomorphize[ba23129770f20443]::collector::collect_crate_mono_items::{closure#1}::{closure#0}>
  32:        0x10f1acb68 - <rustc_session[f1d766c083bcad2f]::session::Session>::time::<(), rustc_monomorphize[ba23129770f20443]::collector::collect_crate_mono_items::{closure#1}>
  33:        0x10f1b513c - rustc_monomorphize[ba23129770f20443]::collector::collect_crate_mono_items
  34:        0x10f1be608 - rustc_monomorphize[ba23129770f20443]::partitioning::collect_and_partition_mono_items
  35:        0x10fd70a60 - <rustc_middle[a12d4e31e9c7c7b2]::dep_graph::dep_node::DepKind as rustc_query_system[4ec8b7e6ed7d2b80]::dep_graph::DepKind>::with_deps::<<rustc_query_system[4ec8b7e6ed7d2b80]::dep_graph::graph::DepGraph<rustc_middle[a12d4e31e9c7c7b2]::dep_graph::dep_node::DepKind>>::with_task_impl<rustc_query_impl[4d60d89ac47f5f83]::plumbing::QueryCtxt, (), (&rustc_data_structures[a49ab2b4a1c20397]::unord::UnordSet<rustc_span[9bec1e8d1a20d9df]::def_id::DefId>, &[rustc_middle[a12d4e31e9c7c7b2]::mir::mono::CodegenUnit])>::{closure#0}, (&rustc_data_structures[a49ab2b4a1c20397]::unord::UnordSet<rustc_span[9bec1e8d1a20d9df]::def_id::DefId>, &[rustc_middle[a12d4e31e9c7c7b2]::mir::mono::CodegenUnit])>
  36:        0x10fcc6d5c - rustc_query_system[4ec8b7e6ed7d2b80]::query::plumbing::try_execute_query::<rustc_query_impl[4d60d89ac47f5f83]::queries::collect_and_partition_mono_items, rustc_query_impl[4d60d89ac47f5f83]::plumbing::QueryCtxt>
  37:        0x10fda6920 - <rustc_query_impl[4d60d89ac47f5f83]::Queries as rustc_middle[a12d4e31e9c7c7b2]::ty::query::QueryEngine>::collect_and_partition_mono_items
  38:        0x10cdc55b0 - rustc_codegen_ssa[6f96b87013603e7f]::base::codegen_crate::<rustc_codegen_llvm[96a2ad4a628786a9]::LlvmCodegenBackend>
  39:        0x10cdad650 - <rustc_codegen_llvm[96a2ad4a628786a9]::LlvmCodegenBackend as rustc_codegen_ssa[6f96b87013603e7f]::traits::backend::CodegenBackend>::codegen_crate
  40:        0x10cce1824 - <rustc_session[f1d766c083bcad2f]::session::Session>::time::<alloc[f251364f33aae5a4]::boxed::Box<dyn core[446d629763b4aa]::any::Any>, rustc_interface[812bb1defcb7896d]::passes::start_codegen::{closure#0}>
  41:        0x10ccda960 - rustc_interface[812bb1defcb7896d]::passes::start_codegen
  42:        0x10ccdc6c4 - <rustc_middle[a12d4e31e9c7c7b2]::ty::context::GlobalCtxt>::enter::<<rustc_interface[812bb1defcb7896d]::queries::Queries>::ongoing_codegen::{closure#0}::{closure#0}, core[446d629763b4aa]::result::Result<alloc[f251364f33aae5a4]::boxed::Box<dyn core[446d629763b4aa]::any::Any>, rustc_span[9bec1e8d1a20d9df]::ErrorGuaranteed>>
  43:        0x10cd01a58 - <rustc_interface[812bb1defcb7896d]::queries::Queries>::ongoing_codegen
  44:        0x10cc89b70 - rustc_span[9bec1e8d1a20d9df]::with_source_map::<core[446d629763b4aa]::result::Result<(), rustc_span[9bec1e8d1a20d9df]::ErrorGuaranteed>, rustc_interface[812bb1defcb7896d]::interface::run_compiler<core[446d629763b4aa]::result::Result<(), rustc_span[9bec1e8d1a20d9df]::ErrorGuaranteed>, rustc_driver_impl[4da67b3d18d5a97a]::run_compiler::{closure#1}>::{closure#0}::{closure#0}>
  45:        0x10cc4bf84 - std[57ecbc5b2c1792f]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[812bb1defcb7896d]::util::run_in_thread_pool_with_globals<rustc_interface[812bb1defcb7896d]::interface::run_compiler<core[446d629763b4aa]::result::Result<(), rustc_span[9bec1e8d1a20d9df]::ErrorGuaranteed>, rustc_driver_impl[4da67b3d18d5a97a]::run_compiler::{closure#1}>::{closure#0}, core[446d629763b4aa]::result::Result<(), rustc_span[9bec1e8d1a20d9df]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[446d629763b4aa]::result::Result<(), rustc_span[9bec1e8d1a20d9df]::ErrorGuaranteed>>
  46:        0x10cc4dd20 - <<std[57ecbc5b2c1792f]::thread::Builder>::spawn_unchecked_<rustc_interface[812bb1defcb7896d]::util::run_in_thread_pool_with_globals<rustc_interface[812bb1defcb7896d]::interface::run_compiler<core[446d629763b4aa]::result::Result<(), rustc_span[9bec1e8d1a20d9df]::ErrorGuaranteed>, rustc_driver_impl[4da67b3d18d5a97a]::run_compiler::{closure#1}>::{closure#0}, core[446d629763b4aa]::result::Result<(), rustc_span[9bec1e8d1a20d9df]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[446d629763b4aa]::result::Result<(), rustc_span[9bec1e8d1a20d9df]::ErrorGuaranteed>>::{closure#1} as core[446d629763b4aa]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
  47:        0x104b73a24 - std::sys::unix::thread::Thread::new::thread_start::h5db5d66cd91ffb33
  48:        0x1b214606c - __pthread_deallocate

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 1.69.0 (84c898d65 2023-04-16) running on aarch64-apple-darwin

note: compiler flags: --crate-type bin -C embed-bitcode=no -C split-debuginfo=unpacked -C debuginfo=2 -C incremental=[REDACTED]

note: some of the compiler flags provided by cargo are hidden

query stack during panic:
thread 'rustc' panicked at 'Illegal read of: 53', /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/compiler/rustc_query_system/src/dep_graph/graph.rs:450:25
stack backtrace:
   0:        0x104b68468 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h105074e3d85f800b
   1:        0x104bbb388 - core::fmt::write::h34766cf8fff7af1e
   2:        0x104b5e1e0 - std::io::Write::write_fmt::hd64c4cf6e7adea59
   3:        0x104b6827c - std::sys_common::backtrace::print::h2a6828a537036cf9
   4:        0x104b6ad04 - std::panicking::default_hook::{{closure}}::h4e82ce6ccef941b2
   5:        0x104b6aa5c - std::panicking::default_hook::h29f62f8795c5cb00
   6:        0x10cc3d74c - rustc_driver_impl[4da67b3d18d5a97a]::DEFAULT_HOOK::{closure#0}::{closure#0}
   7:        0x104b6b3fc - std::panicking::rust_panic_with_hook::h19862cbd0fbda7ba
   8:        0x104b6b1f4 - std::panicking::begin_panic_handler::{{closure}}::h3f3626935e1669fe
   9:        0x104b68888 - std::sys_common::backtrace::__rust_end_short_backtrace::h5054ef52bd507d0a
  10:        0x104b6af50 - _rust_begin_unwind
  11:        0x104be6608 - core::panicking::panic_fmt::h7e47e10600a90221
  12:        0x1108e2090 - <rustc_middle[a12d4e31e9c7c7b2]::dep_graph::dep_node::DepKind as rustc_query_system[4ec8b7e6ed7d2b80]::dep_graph::DepKind>::read_deps::<<rustc_query_system[4ec8b7e6ed7d2b80]::dep_graph::graph::DepGraph<rustc_middle[a12d4e31e9c7c7b2]::dep_graph::dep_node::DepKind>>::read_index::{closure#0}>
  13:        0x11087e07c - <rustc_middle[a12d4e31e9c7c7b2]::ty::context::TyCtxt>::type_length_limit
  14:        0x110872050 - <rustc_middle[a12d4e31e9c7c7b2]::ty::context::TyCtxt>::def_path_str
  15:        0x1109d7d84 - <rustc_middle[a12d4e31e9c7c7b2]::mir::interpret::GlobalId>::display
  16:        0x1109677d8 - rustc_middle[a12d4e31e9c7c7b2]::query::descs::eval_to_const_value_raw
  17:        0x10fe0c440 - rustc_query_impl[4d60d89ac47f5f83]::plumbing::create_query_frame::<rustc_middle[a12d4e31e9c7c7b2]::ty::ParamEnvAnd<rustc_middle[a12d4e31e9c7c7b2]::mir::interpret::GlobalId>>
  18:        0x10fed5c4c - <rustc_query_impl[4d60d89ac47f5f83]::query_structs::eval_to_const_value_raw::{closure#0} as core[446d629763b4aa]::ops::function::FnOnce<(rustc_query_impl[4d60d89ac47f5f83]::plumbing::QueryCtxt, &mut std[57ecbc5b2c1792f]::collections::hash::map::HashMap<rustc_query_system[4ec8b7e6ed7d2b80]::query::job::QueryJobId, rustc_query_system[4ec8b7e6ed7d2b80]::query::job::QueryJobInfo<rustc_middle[a12d4e31e9c7c7b2]::dep_graph::dep_node::DepKind>, core[446d629763b4aa]::hash::BuildHasherDefault<rustc_hash[3c71cadb9a051031]::FxHasher>>)>>::call_once
  19:        0x10fe2b8a0 - rustc_query_system[4ec8b7e6ed7d2b80]::query::job::print_query_stack::<rustc_query_impl[4d60d89ac47f5f83]::plumbing::QueryCtxt>
  20:        0x10ccebf48 - rustc_interface[812bb1defcb7896d]::interface::try_print_query_stack
  21:        0x10cc3e024 - rustc_driver_impl[4da67b3d18d5a97a]::report_ice
  22:        0x10cc3d788 - rustc_driver_impl[4da67b3d18d5a97a]::DEFAULT_HOOK::{closure#0}::{closure#0}
  23:        0x104b6b3fc - std::panicking::rust_panic_with_hook::h19862cbd0fbda7ba
  24:        0x104b6b1b4 - std::panicking::begin_panic_handler::{{closure}}::h3f3626935e1669fe
  25:        0x104b68888 - std::sys_common::backtrace::__rust_end_short_backtrace::h5054ef52bd507d0a
  26:        0x104b6af50 - _rust_begin_unwind
  27:        0x104be6608 - core::panicking::panic_fmt::h7e47e10600a90221
  28:        0x10fd81cb0 - <rustc_middle[a12d4e31e9c7c7b2]::mir::interpret::AllocDiscriminant as rustc_serialize[75a1f45f8c95edce]::serialize::Decodable<rustc_query_impl[4d60d89ac47f5f83]::on_disk_cache::CacheDecoder>>::decode
  29:        0x10fd62ad0 - <rustc_middle[a12d4e31e9c7c7b2]::mir::interpret::AllocDecodingSession>::decode_alloc_id::<rustc_query_impl[4d60d89ac47f5f83]::on_disk_cache::CacheDecoder>
  30:        0x10fe3c1b0 - <rustc_middle[a12d4e31e9c7c7b2]::mir::interpret::pointer::Pointer as rustc_serialize[75a1f45f8c95edce]::serialize::Decodable<rustc_query_impl[4d60d89ac47f5f83]::on_disk_cache::CacheDecoder>>::decode
  31:        0x10feb4d9c - <rustc_middle[a12d4e31e9c7c7b2]::mir::interpret::value::ConstValue as rustc_serialize[75a1f45f8c95edce]::serialize::Decodable<rustc_query_impl[4d60d89ac47f5f83]::on_disk_cache::CacheDecoder>>::decode
  32:        0x10fd5e698 - <core[446d629763b4aa]::result::Result<rustc_middle[a12d4e31e9c7c7b2]::mir::interpret::value::ConstValue, rustc_middle[a12d4e31e9c7c7b2]::mir::interpret::error::ErrorHandled> as rustc_serialize[75a1f45f8c95edce]::serialize::Decodable<rustc_query_impl[4d60d89ac47f5f83]::on_disk_cache::CacheDecoder>>::decode
  33:        0x10fdd147c - <rustc_query_impl[4d60d89ac47f5f83]::on_disk_cache::OnDiskCache>::try_load_query_result::<core[446d629763b4aa]::result::Result<rustc_middle[a12d4e31e9c7c7b2]::mir::interpret::value::ConstValue, rustc_middle[a12d4e31e9c7c7b2]::mir::interpret::error::ErrorHandled>>
  34:        0x10fcf65f0 - <<rustc_query_impl[4d60d89ac47f5f83]::queries::eval_to_const_value_raw as rustc_query_system[4ec8b7e6ed7d2b80]::query::config::QueryConfig<rustc_query_impl[4d60d89ac47f5f83]::plumbing::QueryCtxt>>::try_load_from_disk::{closure#0} as core[446d629763b4aa]::ops::function::FnOnce<(rustc_query_impl[4d60d89ac47f5f83]::plumbing::QueryCtxt, rustc_query_system[4ec8b7e6ed7d2b80]::dep_graph::serialized::SerializedDepNodeIndex)>>::call_once
  35:        0x10fd7ad3c - <rustc_middle[a12d4e31e9c7c7b2]::dep_graph::dep_node::DepKind as rustc_query_system[4ec8b7e6ed7d2b80]::dep_graph::DepKind>::with_deps::<rustc_query_system[4ec8b7e6ed7d2b80]::query::plumbing::try_load_from_disk_and_cache_in_memory<rustc_query_impl[4d60d89ac47f5f83]::queries::eval_to_const_value_raw, rustc_query_impl[4d60d89ac47f5f83]::plumbing::QueryCtxt>::{closure#0}, core[446d629763b4aa]::option::Option<core[446d629763b4aa]::result::Result<rustc_middle[a12d4e31e9c7c7b2]::mir::interpret::value::ConstValue, rustc_middle[a12d4e31e9c7c7b2]::mir::interpret::error::ErrorHandled>>>
  36:        0x10fc8b95c - rustc_query_system[4ec8b7e6ed7d2b80]::query::plumbing::try_execute_query::<rustc_query_impl[4d60d89ac47f5f83]::queries::eval_to_const_value_raw, rustc_query_impl[4d60d89ac47f5f83]::plumbing::QueryCtxt>
  37:        0x10fd99d68 - <rustc_query_impl[4d60d89ac47f5f83]::Queries as rustc_middle[a12d4e31e9c7c7b2]::ty::query::QueryEngine>::eval_to_const_value_raw
  38:        0x110886d78 - <rustc_middle[a12d4e31e9c7c7b2]::ty::context::TyCtxt>::const_eval_global_id
  39:        0x11088673c - <rustc_middle[a12d4e31e9c7c7b2]::ty::context::TyCtxt>::const_eval_resolve
  40:        0x10f1b7494 - <rustc_monomorphize[ba23129770f20443]::collector::MirNeighborCollector as rustc_middle[a12d4e31e9c7c7b2]::mir::visit::Visitor>::visit_constant
  41:        0x10f1b3f80 - <rustc_monomorphize[ba23129770f20443]::collector::MirNeighborCollector as rustc_middle[a12d4e31e9c7c7b2]::mir::visit::Visitor>::visit_operand
  42:        0x10f1b2ee0 - <rustc_monomorphize[ba23129770f20443]::collector::MirNeighborCollector as rustc_middle[a12d4e31e9c7c7b2]::mir::visit::Visitor>::visit_rvalue
  43:        0x10f1b7fa8 - rustc_monomorphize[ba23129770f20443]::collector::collect_neighbours
  44:        0x10f1b6a08 - rustc_monomorphize[ba23129770f20443]::collector::collect_items_rec
  45:        0x10f1b6e08 - rustc_monomorphize[ba23129770f20443]::collector::collect_items_rec
  46:        0x10f1af7a8 - <core[446d629763b4aa]::panic::unwind_safe::AssertUnwindSafe<rustc_data_structures[a49ab2b4a1c20397]::sync::par_for_each_in<alloc[f251364f33aae5a4]::vec::Vec<rustc_middle[a12d4e31e9c7c7b2]::mir::mono::MonoItem>, rustc_monomorphize[ba23129770f20443]::collector::collect_crate_mono_items::{closure#1}::{closure#0}>::{closure#0}::{closure#0}> as core[446d629763b4aa]::ops::function::FnOnce<()>>::call_once
  47:        0x10f1a9398 - rustc_data_structures[a49ab2b4a1c20397]::sync::par_for_each_in::<alloc[f251364f33aae5a4]::vec::Vec<rustc_middle[a12d4e31e9c7c7b2]::mir::mono::MonoItem>, rustc_monomorphize[ba23129770f20443]::collector::collect_crate_mono_items::{closure#1}::{closure#0}>
  48:        0x10f1acb68 - <rustc_session[f1d766c083bcad2f]::session::Session>::time::<(), rustc_monomorphize[ba23129770f20443]::collector::collect_crate_mono_items::{closure#1}>
  49:        0x10f1b513c - rustc_monomorphize[ba23129770f20443]::collector::collect_crate_mono_items
  50:        0x10f1be608 - rustc_monomorphize[ba23129770f20443]::partitioning::collect_and_partition_mono_items
  51:        0x10fd70a60 - <rustc_middle[a12d4e31e9c7c7b2]::dep_graph::dep_node::DepKind as rustc_query_system[4ec8b7e6ed7d2b80]::dep_graph::DepKind>::with_deps::<<rustc_query_system[4ec8b7e6ed7d2b80]::dep_graph::graph::DepGraph<rustc_middle[a12d4e31e9c7c7b2]::dep_graph::dep_node::DepKind>>::with_task_impl<rustc_query_impl[4d60d89ac47f5f83]::plumbing::QueryCtxt, (), (&rustc_data_structures[a49ab2b4a1c20397]::unord::UnordSet<rustc_span[9bec1e8d1a20d9df]::def_id::DefId>, &[rustc_middle[a12d4e31e9c7c7b2]::mir::mono::CodegenUnit])>::{closure#0}, (&rustc_data_structures[a49ab2b4a1c20397]::unord::UnordSet<rustc_span[9bec1e8d1a20d9df]::def_id::DefId>, &[rustc_middle[a12d4e31e9c7c7b2]::mir::mono::CodegenUnit])>
  52:        0x10fcc6d5c - rustc_query_system[4ec8b7e6ed7d2b80]::query::plumbing::try_execute_query::<rustc_query_impl[4d60d89ac47f5f83]::queries::collect_and_partition_mono_items, rustc_query_impl[4d60d89ac47f5f83]::plumbing::QueryCtxt>
  53:        0x10fda6920 - <rustc_query_impl[4d60d89ac47f5f83]::Queries as rustc_middle[a12d4e31e9c7c7b2]::ty::query::QueryEngine>::collect_and_partition_mono_items
  54:        0x10cdc55b0 - rustc_codegen_ssa[6f96b87013603e7f]::base::codegen_crate::<rustc_codegen_llvm[96a2ad4a628786a9]::LlvmCodegenBackend>
  55:        0x10cdad650 - <rustc_codegen_llvm[96a2ad4a628786a9]::LlvmCodegenBackend as rustc_codegen_ssa[6f96b87013603e7f]::traits::backend::CodegenBackend>::codegen_crate
  56:        0x10cce1824 - <rustc_session[f1d766c083bcad2f]::session::Session>::time::<alloc[f251364f33aae5a4]::boxed::Box<dyn core[446d629763b4aa]::any::Any>, rustc_interface[812bb1defcb7896d]::passes::start_codegen::{closure#0}>
  57:        0x10ccda960 - rustc_interface[812bb1defcb7896d]::passes::start_codegen
  58:        0x10ccdc6c4 - <rustc_middle[a12d4e31e9c7c7b2]::ty::context::GlobalCtxt>::enter::<<rustc_interface[812bb1defcb7896d]::queries::Queries>::ongoing_codegen::{closure#0}::{closure#0}, core[446d629763b4aa]::result::Result<alloc[f251364f33aae5a4]::boxed::Box<dyn core[446d629763b4aa]::any::Any>, rustc_span[9bec1e8d1a20d9df]::ErrorGuaranteed>>
  59:        0x10cd01a58 - <rustc_interface[812bb1defcb7896d]::queries::Queries>::ongoing_codegen
  60:        0x10cc89b70 - rustc_span[9bec1e8d1a20d9df]::with_source_map::<core[446d629763b4aa]::result::Result<(), rustc_span[9bec1e8d1a20d9df]::ErrorGuaranteed>, rustc_interface[812bb1defcb7896d]::interface::run_compiler<core[446d629763b4aa]::result::Result<(), rustc_span[9bec1e8d1a20d9df]::ErrorGuaranteed>, rustc_driver_impl[4da67b3d18d5a97a]::run_compiler::{closure#1}>::{closure#0}::{closure#0}>
  61:        0x10cc4bf84 - std[57ecbc5b2c1792f]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[812bb1defcb7896d]::util::run_in_thread_pool_with_globals<rustc_interface[812bb1defcb7896d]::interface::run_compiler<core[446d629763b4aa]::result::Result<(), rustc_span[9bec1e8d1a20d9df]::ErrorGuaranteed>, rustc_driver_impl[4da67b3d18d5a97a]::run_compiler::{closure#1}>::{closure#0}, core[446d629763b4aa]::result::Result<(), rustc_span[9bec1e8d1a20d9df]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[446d629763b4aa]::result::Result<(), rustc_span[9bec1e8d1a20d9df]::ErrorGuaranteed>>
  62:        0x10cc4dd20 - <<std[57ecbc5b2c1792f]::thread::Builder>::spawn_unchecked_<rustc_interface[812bb1defcb7896d]::util::run_in_thread_pool_with_globals<rustc_interface[812bb1defcb7896d]::interface::run_compiler<core[446d629763b4aa]::result::Result<(), rustc_span[9bec1e8d1a20d9df]::ErrorGuaranteed>, rustc_driver_impl[4da67b3d18d5a97a]::run_compiler::{closure#1}>::{closure#0}, core[446d629763b4aa]::result::Result<(), rustc_span[9bec1e8d1a20d9df]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[446d629763b4aa]::result::Result<(), rustc_span[9bec1e8d1a20d9df]::ErrorGuaranteed>>::{closure#1} as core[446d629763b4aa]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
  63:        0x104b73a24 - std::sys::unix::thread::Thread::new::thread_start::h5db5d66cd91ffb33
  64:        0x1b214606c - __pthread_deallocate

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 1.69.0 (84c898d65 2023-04-16) running on aarch64-apple-darwin

note: compiler flags: --crate-type bin -C embed-bitcode=no -C split-debuginfo=unpacked -C debuginfo=2 -C incremental=[REDACTED]

note: some of the compiler flags provided by cargo are hidden

query stack during panic:
end of query stack
thread panicked while panicking. aborting.
error: could not compile `rust-playground`

Caused by:
  process didn't exit successfully: `rustc --crate-name rust_playground --edition=2021 src/main.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --diagnostic-width=436 --crate-type bin --emit=dep-info,link -C embed-bitcode=no -C split-debuginfo=unpacked -C debuginfo=2 -C metadata=7791f0de757a0be7 -C extra-filename=-7791f0de757a0be7 --out-dir /Users/chance/dev/spike/rust/playground/target/debug/deps -C incremental=/Users/chance/dev/spike/rust/playground/target/debug/incremental -L dependency=/Users/chance/dev/spike/rust/playground/target/debug/deps` (signal: 6, SIGABRT: process abort signal)

Backtrace

thread 'rustc' panicked at 'invalid enum variant tag while decoding `AllocDiscriminant`, expected 0..4', /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/compiler/rustc_middle/src/mir/interpret/mod.rs:195:10
stack backtrace:
   0: _rust_begin_unwind
   1: core::panicking::panic_fmt
   2: <rustc_middle::mir::interpret::AllocDiscriminant as rustc_serialize::serialize::Decodable<rustc_query_impl::on_disk_cache::CacheDecoder>>::decode
   3: <rustc_middle::mir::interpret::AllocDecodingSession>::decode_alloc_id::<rustc_query_impl::on_disk_cache::CacheDecoder>
   4: <rustc_middle::mir::interpret::pointer::Pointer as rustc_serialize::serialize::Decodable<rustc_query_impl::on_disk_cache::CacheDecoder>>::decode
   5: <rustc_middle::mir::interpret::value::ConstValue as rustc_serialize::serialize::Decodable<rustc_query_impl::on_disk_cache::CacheDecoder>>::decode
   6: <core::result::Result<rustc_middle::mir::interpret::value::ConstValue, rustc_middle::mir::interpret::error::ErrorHandled> as rustc_serialize::serialize::Decodable<rustc_query_impl::on_disk_cache::CacheDecoder>>::decode
   7: <rustc_query_impl::on_disk_cache::OnDiskCache>::try_load_query_result::<core::result::Result<rustc_middle::mir::interpret::value::ConstValue, rustc_middle::mir::interpret::error::ErrorHandled>>
   8: <<rustc_query_impl::queries::eval_to_const_value_raw as rustc_query_system::query::config::QueryConfig<rustc_query_impl::plumbing::QueryCtxt>>::try_load_from_disk::{closure#0} as core::ops::function::FnOnce<(rustc_query_impl::plumbing::QueryCtxt, rustc_query_system::dep_graph::serialized::SerializedDepNodeIndex)>>::call_once
   9: <rustc_middle::dep_graph::dep_node::DepKind as rustc_query_system::dep_graph::DepKind>::with_deps::<rustc_query_system::query::plumbing::try_load_from_disk_and_cache_in_memory<rustc_query_impl::queries::eval_to_const_value_raw, rustc_query_impl::plumbing::QueryCtxt>::{closure#0}, core::option::Option<core::result::Result<rustc_middle::mir::interpret::value::ConstValue, rustc_middle::mir::interpret::error::ErrorHandled>>>
  10: rustc_query_system::query::plumbing::try_execute_query::<rustc_query_impl::queries::eval_to_const_value_raw, rustc_query_impl::plumbing::QueryCtxt>
  11: <rustc_query_impl::Queries as rustc_middle::ty::query::QueryEngine>::eval_to_const_value_raw
  12: <rustc_middle::ty::context::TyCtxt>::const_eval_global_id
  13: <rustc_middle::ty::context::TyCtxt>::const_eval_resolve
  14: <rustc_monomorphize::collector::MirNeighborCollector as rustc_middle::mir::visit::Visitor>::visit_constant
  15: <rustc_monomorphize::collector::MirNeighborCollector as rustc_middle::mir::visit::Visitor>::visit_operand
  16: <rustc_monomorphize::collector::MirNeighborCollector as rustc_middle::mir::visit::Visitor>::visit_rvalue
  17: rustc_monomorphize::collector::collect_neighbours
  18: rustc_monomorphize::collector::collect_items_rec
  19: <core::panic::unwind_safe::AssertUnwindSafe<rustc_data_structures::sync::par_for_each_in<alloc::vec::Vec<rustc_middle::mir::mono::MonoItem>, rustc_monomorphize::collector::collect_crate_mono_items::{closure#1}::{closure#0}>::{closure#0}::{closure#0}> as core::ops::function::FnOnce<()>>::call_once
  20: rustc_data_structures::sync::par_for_each_in::<alloc::vec::Vec<rustc_middle::mir::mono::MonoItem>, rustc_monomorphize::collector::collect_crate_mono_items::{closure#1}::{closure#0}>
  21: <rustc_session::session::Session>::time::<(), rustc_monomorphize::collector::collect_crate_mono_items::{closure#1}>
  22: rustc_monomorphize::collector::collect_crate_mono_items
  23: rustc_monomorphize::partitioning::collect_and_partition_mono_items
  24: <rustc_middle::dep_graph::dep_node::DepKind as rustc_query_system::dep_graph::DepKind>::with_deps::<<rustc_query_system::dep_graph::graph::DepGraph<rustc_middle::dep_graph::dep_node::DepKind>>::with_task_impl<rustc_query_impl::plumbing::QueryCtxt, (), (&rustc_data_structures::unord::UnordSet<rustc_span::def_id::DefId>, &[rustc_middle::mir::mono::CodegenUnit])>::{closure#0}, (&rustc_data_structures::unord::UnordSet<rustc_span::def_id::DefId>, &[rustc_middle::mir::mono::CodegenUnit])>
  25: rustc_query_system::query::plumbing::try_execute_query::<rustc_query_impl::queries::collect_and_partition_mono_items, rustc_query_impl::plumbing::QueryCtxt>
  26: <rustc_query_impl::Queries as rustc_middle::ty::query::QueryEngine>::collect_and_partition_mono_items
  27: rustc_codegen_ssa::base::codegen_crate::<rustc_codegen_llvm::LlvmCodegenBackend>
  28: <rustc_codegen_llvm::LlvmCodegenBackend as rustc_codegen_ssa::traits::backend::CodegenBackend>::codegen_crate
  29: <rustc_session::session::Session>::time::<alloc::boxed::Box<dyn core::any::Any>, rustc_interface::passes::start_codegen::{closure#0}>
  30: rustc_interface::passes::start_codegen
  31: <rustc_middle::ty::context::GlobalCtxt>::enter::<<rustc_interface::queries::Queries>::ongoing_codegen::{closure#0}::{closure#0}, core::result::Result<alloc::boxed::Box<dyn core::any::Any>, rustc_span::ErrorGuaranteed>>
  32: <rustc_interface::queries::Queries>::ongoing_codegen
  33: rustc_span::with_source_map::<core::result::Result<(), rustc_span::ErrorGuaranteed>, rustc_interface::interface::run_compiler<core::result::Result<(), rustc_span::ErrorGuaranteed>, rustc_driver_impl::run_compiler::{closure#1}>::{closure#0}::{closure#0}>
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.

[matthiaskrgr]

Hm, when using incr comp. on 1.71, I get

thread 'rustc' panicked at 'called `Result::unwrap()` on an `Err` value: TryFromIntError(())', compiler/rustc_middle/src/query/on_disk_cache.rs:304:70
stack backtrace:
   0:     0x7f535b7f06e1 - std::backtrace_rs::backtrace::libunwind::trace::h4354896f1663baaf
                               at /rustc/18bfe5d8a9ca0e226171e98f8f4ef071790f3352/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5
   1:     0x7f535b7f06e1 - std::backtrace_rs::backtrace::trace_unsynchronized::h8ac49f89c23585dd
                               at /rustc/18bfe5d8a9ca0e226171e98f8f4ef071790f3352/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
   2:     0x7f535b7f06e1 - std::sys_common::backtrace::_print_fmt::h9f5f16b3ef080000
                               at /rustc/18bfe5d8a9ca0e226171e98f8f4ef071790f3352/library/std/src/sys_common/backtrace.rs:65:5
   3:     0x7f535b7f06e1 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hcfed927151d1ad83
                               at /rustc/18bfe5d8a9ca0e226171e98f8f4ef071790f3352/library/std/src/sys_common/backtrace.rs:44:22
   4:     0x7f535b850bdf - core::fmt::rt::Argument::fmt::h12fb43eea2fe23a8
                               at /rustc/18bfe5d8a9ca0e226171e98f8f4ef071790f3352/library/core/src/fmt/rt.rs:138:9
   5:     0x7f535b850bdf - core::fmt::write::hcf94a34baaaea06f
                               at /rustc/18bfe5d8a9ca0e226171e98f8f4ef071790f3352/library/core/src/fmt/mod.rs:1094:21
   6:     0x7f535b7e3941 - std::io::Write::write_fmt::h60003491edc2e074
                               at /rustc/18bfe5d8a9ca0e226171e98f8f4ef071790f3352/library/std/src/io/mod.rs:1712:15
   7:     0x7f535b7f04f5 - std::sys_common::backtrace::_print::h9a8311322b9d8667
                               at /rustc/18bfe5d8a9ca0e226171e98f8f4ef071790f3352/library/std/src/sys_common/backtrace.rs:47:5
   8:     0x7f535b7f04f5 - std::sys_common::backtrace::print::h8503eaeeae92ea08
                               at /rustc/18bfe5d8a9ca0e226171e98f8f4ef071790f3352/library/std/src/sys_common/backtrace.rs:34:9
   9:     0x7f535b7f3177 - std::panicking::default_hook::{{closure}}::h36a123b73b99c0f3
  10:     0x7f535b7f2f64 - std::panicking::default_hook::ha2efb9fc5f628e61
                               at /rustc/18bfe5d8a9ca0e226171e98f8f4ef071790f3352/library/std/src/panicking.rs:288:9
  11:     0x7f535a6c87db - rustc_driver_impl[64b7dd1911194932]::install_ice_hook::{closure#0}
  12:     0x7f535b7f3897 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h250e911c4e8d011a
                               at /rustc/18bfe5d8a9ca0e226171e98f8f4ef071790f3352/library/alloc/src/boxed.rs:1999:9
  13:     0x7f535b7f3897 - std::panicking::rust_panic_with_hook::h5d9e02f555bc48d2
                               at /rustc/18bfe5d8a9ca0e226171e98f8f4ef071790f3352/library/std/src/panicking.rs:695:13
  14:     0x7f535b7f3617 - std::panicking::begin_panic_handler::{{closure}}::hbb00bd8fdd3417d9
                               at /rustc/18bfe5d8a9ca0e226171e98f8f4ef071790f3352/library/std/src/panicking.rs:582:13
  15:     0x7f535b7f0b26 - std::sys_common::backtrace::__rust_end_short_backtrace::ha9ceea58b8cf1deb
                               at /rustc/18bfe5d8a9ca0e226171e98f8f4ef071790f3352/library/std/src/sys_common/backtrace.rs:150:18
  16:     0x7f535b7f3382 - rust_begin_unwind
                               at /rustc/18bfe5d8a9ca0e226171e98f8f4ef071790f3352/library/std/src/panicking.rs:578:5
  17:     0x7f535b84ce63 - core::panicking::panic_fmt::h1df8faa11491e0c5
                               at /rustc/18bfe5d8a9ca0e226171e98f8f4ef071790f3352/library/core/src/panicking.rs:67:14
  18:     0x7f535b84d483 - core::result::unwrap_failed::h4175d949b4f9e8b9
                               at /rustc/18bfe5d8a9ca0e226171e98f8f4ef071790f3352/library/core/src/result.rs:1651:5
  19:     0x7f5359cbfb1f - rustc_middle[f607de435e9a4418]::ty::context::tls::with_context::<<rustc_middle[f607de435e9a4418]::dep_graph::dep_node::DepKind as rustc_query_system[7835b3e98a87b812]::dep_graph::DepKind>::with_deps<<rustc_middle[f607de435e9a4418]::query::on_disk_cache::OnDiskCache>::serialize::{closure#0}, core[b4a8d54be4c63c12]::result::Result<usize, std[d9d2839bce1dd559]::io::error::Error>>::{closure#0}, core[b4a8d54be4c63c12]::result::Result<usize, std[d9d2839bce1dd559]::io::error::Error>>::{closure#0}
  20:     0x7f5359c8b521 - <rustc_middle[f607de435e9a4418]::ty::context::TyCtxt>::serialize_query_result_cache
  21:     0x7f5359c8b117 - <rustc_session[22fc273b1747149c]::session::Session>::time::<core[b4a8d54be4c63c12]::result::Result<usize, std[d9d2839bce1dd559]::io::error::Error>, rustc_incremental[ce295fd98e3725ed]::persist::save::encode_query_cache::{closure#0}>
  22:     0x7f5359c8a1ec - rustc_incremental[ce295fd98e3725ed]::persist::file_format::save_in::<rustc_incremental[ce295fd98e3725ed]::persist::save::save_dep_graph::{closure#0}::{closure#2}::{closure#0}::{closure#0}>
  23:     0x7f5359c89602 - <rustc_session[22fc273b1747149c]::session::Session>::time::<(), rustc_incremental[ce295fd98e3725ed]::persist::save::save_dep_graph::{closure#0}::{closure#2}::{closure#0}>
  24:     0x7f5359c6986f - rustc_data_structures[d67636fd6e7e7cea]::sync::join::<rustc_incremental[ce295fd98e3725ed]::persist::save::save_dep_graph::{closure#0}::{closure#2}, rustc_incremental[ce295fd98e3725ed]::persist::save::save_dep_graph::{closure#0}::{closure#3}, (), ()>
  25:     0x7f5359c633b6 - rustc_incremental[ce295fd98e3725ed]::persist::save::save_dep_graph
  26:     0x7f5359c63087 - <rustc_session[22fc273b1747149c]::session::Session>::time::<(), <rustc_interface[d75252421fea963]::interface::Compiler>::enter<rustc_driver_impl[64b7dd1911194932]::run_compiler::{closure#1}::{closure#2}, core[b4a8d54be4c63c12]::result::Result<core[b4a8d54be4c63c12]::option::Option<rustc_interface[d75252421fea963]::queries::Linker>, rustc_span[f3562a9d228bc34b]::ErrorGuaranteed>>::{closure#0}>
  27:     0x7f5359c60119 - <rustc_interface[d75252421fea963]::interface::Compiler>::enter::<rustc_driver_impl[64b7dd1911194932]::run_compiler::{closure#1}::{closure#2}, core[b4a8d54be4c63c12]::result::Result<core[b4a8d54be4c63c12]::option::Option<rustc_interface[d75252421fea963]::queries::Linker>, rustc_span[f3562a9d228bc34b]::ErrorGuaranteed>>
  28:     0x7f5359c5dcfd - <scoped_tls[36ad800287692b7a]::ScopedKey<rustc_span[f3562a9d228bc34b]::SessionGlobals>>::set::<rustc_interface[d75252421fea963]::interface::run_compiler<core[b4a8d54be4c63c12]::result::Result<(), rustc_span[f3562a9d228bc34b]::ErrorGuaranteed>, rustc_driver_impl[64b7dd1911194932]::run_compiler::{closure#1}>::{closure#0}, core[b4a8d54be4c63c12]::result::Result<(), rustc_span[f3562a9d228bc34b]::ErrorGuaranteed>>
  29:     0x7f5359c5d156 - std[d9d2839bce1dd559]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[d75252421fea963]::util::run_in_thread_pool_with_globals<rustc_interface[d75252421fea963]::interface::run_compiler<core[b4a8d54be4c63c12]::result::Result<(), rustc_span[f3562a9d228bc34b]::ErrorGuaranteed>, rustc_driver_impl[64b7dd1911194932]::run_compiler::{closure#1}>::{closure#0}, core[b4a8d54be4c63c12]::result::Result<(), rustc_span[f3562a9d228bc34b]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[b4a8d54be4c63c12]::result::Result<(), rustc_span[f3562a9d228bc34b]::ErrorGuaranteed>>
  30:     0x7f5359c5cf05 - <<std[d9d2839bce1dd559]::thread::Builder>::spawn_unchecked_<rustc_interface[d75252421fea963]::util::run_in_thread_pool_with_globals<rustc_interface[d75252421fea963]::interface::run_compiler<core[b4a8d54be4c63c12]::result::Result<(), rustc_span[f3562a9d228bc34b]::ErrorGuaranteed>, rustc_driver_impl[64b7dd1911194932]::run_compiler::{closure#1}>::{closure#0}, core[b4a8d54be4c63c12]::result::Result<(), rustc_span[f3562a9d228bc34b]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[b4a8d54be4c63c12]::result::Result<(), rustc_span[f3562a9d228bc34b]::ErrorGuaranteed>>::{closure#1} as core[b4a8d54be4c63c12]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
  31:     0x7f535b7fdd45 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h0ee7a0a44efbcb8b
                               at /rustc/18bfe5d8a9ca0e226171e98f8f4ef071790f3352/library/alloc/src/boxed.rs:1985:9
  32:     0x7f535b7fdd45 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h8f984f8b1c075279
                               at /rustc/18bfe5d8a9ca0e226171e98f8f4ef071790f3352/library/alloc/src/boxed.rs:1985:9
  33:     0x7f535b7fdd45 - std::sys::unix::thread::Thread::new::thread_start::h054937194df87b6d
                               at /rustc/18bfe5d8a9ca0e226171e98f8f4ef071790f3352/library/std/src/sys/unix/thread.rs:108:17
  34:     0x7f5357465bb5 - <unknown>
  35:     0x7f53574e7d90 - <unknown>
  36:                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 (18bfe5d8a 2023-05-14) running on x86_64-unknown-linux-gnu

note: compiler flags: --crate-type bin -C embed-bitcode=no -C split-debuginfo=unpacked -C debuginfo=2 -C incremental=[REDACTED]

query stack during panic:
end of query stack
[1]    555227 killed     rustc bad.rs --crate-type bin -C embed-bitcode=no -C split-debuginfo=unpacked

but if I skip incr comp, I only get a linker error:

error: linking with `cc` failed: exit status: 1
  |
  = note: LC_ALL="C" PATH="/home/matthias/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/bin:/home/matthias/.cargo/bin:/home/matthias/bin:/usr/local/bin:/home/matthias/.cargo/bin:/home/matthias/.local/bin:/usr/local/bin:/usr/bin:/bin:/usr/local/sbin:/home/matthias/.dotnet/tools:/usr/lib/jvm/default/bin:/usr/bin/site_perl:/usr/bin/vendor_perl:/usr/bin/core_perl:/var/lib/snapd/snap/bin" VSLANG="1033" "cc" "-m64" "/tmp/rustcJEKTvj/symbols.o" "bad.bad.58b4c2d36dba6e75-cgu.0.rcgu.o" "bad.bad.58b4c2d36dba6e75-cgu.1.rcgu.o" "bad.bad.58b4c2d36dba6e75-cgu.10.rcgu.o" "bad.bad.58b4c2d36dba6e75-cgu.11.rcgu.o" "bad.bad.58b4c2d36dba6e75-cgu.12.rcgu.o" "bad.bad.58b4c2d36dba6e75-cgu.13.rcgu.o" "bad.bad.58b4c2d36dba6e75-cgu.2.rcgu.o" "bad.bad.58b4c2d36dba6e75-cgu.3.rcgu.o" "bad.bad.58b4c2d36dba6e75-cgu.4.rcgu.o" "bad.bad.58b4c2d36dba6e75-cgu.5.rcgu.o" "bad.bad.58b4c2d36dba6e75-cgu.6.rcgu.o" "bad.bad.58b4c2d36dba6e75-cgu.7.rcgu.o" "bad.bad.58b4c2d36dba6e75-cgu.8.rcgu.o" "bad.bad.58b4c2d36dba6e75-cgu.9.rcgu.o" "bad.1dx5asfctbwkgcc0.rcgu.o" "-Wl,--as-needed" "-L" "/home/matthias/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/home/matthias/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-edb03adabf0b22c8.rlib" "/home/matthias/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-56c2a42cc2d7381f.rlib" "/home/matthias/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libobject-fd705a60736c3357.rlib" "/home/matthias/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libmemchr-c0ff7ddb2987d8da.rlib" "/home/matthias/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libaddr2line-c459f8b0a64f04e1.rlib" "/home/matthias/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libgimli-c2d64f918d4b26ad.rlib" "/home/matthias/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-d22c51811a78dc80.rlib" "/home/matthias/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd_detect-d8ba7f24f3cb57da.rlib" "/home/matthias/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-2a372fbb5b41c14b.rlib" "/home/matthias/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-45ff23c614a38f1d.rlib" "/home/matthias/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libminiz_oxide-6b9410c3805b4c08.rlib" "/home/matthias/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libadler-6deb8c633abe47e3.rlib" "/home/matthias/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-57df4eca7d5785df.rlib" "/home/matthias/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-0b7d1529f62927c0.rlib" "/home/matthias/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-69a45ab5967387b5.rlib" "/home/matthias/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-c2c050aec00eb6da.rlib" "/home/matthias/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-522518611024dce5.rlib" "/home/matthias/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-05898138a596088a.rlib" "/home/matthias/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-35b8a4bd2de4e62e.rlib" "-Wl,-Bdynamic" "-lgcc_s" "-lutil" "-lrt" "-lpthread" "-lm" "-ldl" "-lc" "-Wl,--eh-frame-hdr" "-Wl,-z,noexecstack" "-L" "/home/matthias/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-o" "bad" "-Wl,--gc-sections" "-pie" "-Wl,-z,relro,-z,now" "-nodefaultlibs"
  = note: ld: error: bad:(.eh_frame+0x5029): relocation R_X86_64_PC32 out of range: -4295022257 is not in [-2147483648, 2147483647]
          ld: error: bad:(.eh_frame+0x5051): relocation R_X86_64_PC32 out of range: -4295022281 is not in [-2147483648, 2147483647]
          ld: error: bad:(.eh_frame+0x5079): relocation R_X86_64_PC32 out of range: -4295022305 is not in [-2147483648, 2147483647]
          ld: error: bad:(.eh_frame+0x5099): relocation R_X86_64_PC32 out of range: -4295022325 is not in [-2147483648, 2147483647]
          ld: error: bad:(.eh_frame+0x50c1): relocation R_X86_64_PC32 out of range: -4295022341 is not in [-2147483648, 2147483647]
          ld: error: bad:(.eh_frame+0x50e1): relocation R_X86_64_PC32 out of range: -4295022289 is not in [-2147483648, 2147483647]
          ld: error: bad:(.eh_frame+0x5119): relocation R_X86_64_PC32 out of range: -4295022285 is not in [-2147483648, 2147483647]
          ld: error: bad:(.eh_frame+0x5151): relocation R_X86_64_PC32 out of range: -4295022293 is not in [-2147483648, 2147483647]
          ld: error: bad:(.eh_frame+0x5189): relocation R_X86_64_PC32 out of range: -4295022337 is not in [-2147483648, 2147483647]
          ld: error: bad:(.eh_frame+0x51c9): relocation R_X86_64_PC32 out of range: -4295022369 is not in [-2147483648, 2147483647]
          ld: error: bad:(.eh_frame+0x5209): relocation R_X86_64_PC32 out of range: -4295022397 is not in [-2147483648, 2147483647]
          ld: error: bad:(.eh_frame+0x5249): relocation R_X86_64_PC32 out of range: -4295022421 is not in [-2147483648, 2147483647]
          ld: error: bad:(.eh_frame+0x5279): relocation R_X86_64_PC32 out of range: -4295022457 is not in [-2147483648, 2147483647]
          ld: error: bad:(.eh_frame+0x52d1): relocation R_X86_64_PC32 out of range: -4295022517 is not in [-2147483648, 2147483647]
          ld: error: bad:(.eh_frame+0x5311): relocation R_X86_64_PC32 out of range: -4295022553 is not in [-2147483648, 2147483647]
          ld: error: bad:(.eh_frame+0x5351): relocation R_X86_64_PC32 out of range: -4295022605 is not in [-2147483648, 2147483647]
          ld: error: bad:(.eh_frame+0x5391): relocation R_X86_64_PC32 out of range: -4295022645 is not in [-2147483648, 2147483647]
          ld: error: bad:(.eh_frame+0x53d1): relocation R_X86_64_PC32 out of range: -4295022673 is not in [-2147483648, 2147483647]
          ld: error: bad:(.eh_frame+0x5429): relocation R_X86_64_PC32 out of range: -4295022705 is not in [-2147483648, 2147483647]
          ld: error: bad:(.eh_frame+0x5469): relocation R_X86_64_PC32 out of range: -4295022745 is not in [-2147483648, 2147483647]
          ld: error: too many errors emitted, stopping now (use --error-limit=0 to see all errors)
          collect2: error: ld returned 1 exit status


error: aborting due to previous error

[saethlin]

The ICE that you have @matthiaskrgr is working as intended: #110632

The on-disk cache uses 32-bit offsets. So do linkers. This isn't good but it's more of a design flaw than a bug.