ICE: assertion failed: !deep_decl.is_glob_import() - when compiling polars-plan

[nguiard]

I stumbled upon a build with polars-plan 0.52.0 that:

• works with nightly-2026-01-10-x86_64-unknown-linux-gnu (a3f2d5abe 2026-01-09)
• fails since nightly-2026-01-11-x86_64-unknown-linux-gnu (f57eac1bf 2026-01-10) (and fails on latest nightly as tested a few minutes ago)

Build fails in both debug and release mode. I have no idea what triggered it, here are infos:

Error:

thread 'rustc' (2636642) panicked at /rustc-dev/f57eac1bf98cb5d578e3364b64365ec398c137df/compiler/rustc_resolve/src/imports.rs:378:13:
assertion failed: !deep_decl.is_glob_import()
stack backtrace:
   0:     0x753da44404f3 - <<std[14974c2a6d31bd09]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[75fca27d79ab979d]::fmt::Display>::fmt
   1:     0x753da4a0fac8 - core[75fca27d79ab979d]::fmt::write
   2:     0x753da4456776 - <std[14974c2a6d31bd09]::sys::stdio::unix::Stderr as std[14974c2a6d31bd09]::io::Write>::write_fmt
   3:     0x753da44160e8 - std[14974c2a6d31bd09]::panicking::default_hook::{closure#0}
   4:     0x753da4433d83 - std[14974c2a6d31bd09]::panicking::default_hook
   5:     0x753da3415eaa - std[14974c2a6d31bd09]::panicking::update_hook::<alloc[97bcaa3c9f42b50c]::boxed::Box<rustc_driver_impl[8626402415690959]::install_ice_hook::{closure#1}>>::{closure#0}
   6:     0x753da4434062 - std[14974c2a6d31bd09]::panicking::panic_with_hook
   7:     0x753da44161da - std[14974c2a6d31bd09]::panicking::panic_handler::{closure#0}
   8:     0x753da440a659 - std[14974c2a6d31bd09]::sys::backtrace::__rust_end_short_backtrace::<std[14974c2a6d31bd09]::panicking::panic_handler::{closure#0}, !>
   9:     0x753da4417c7d - __rustc[92b3c909df398c49]::rust_begin_unwind
  10:     0x753da184b37c - core[75fca27d79ab979d]::panicking::panic_fmt
  11:     0x753da0ca7732 - core[75fca27d79ab979d]::panicking::panic
  12:     0x753da4a3a9a1 - <rustc_resolve[41811edf1107842c]::Resolver>::try_plant_decl_into_local_module
  13:     0x753da4a39a8c - <rustc_resolve[41811edf1107842c]::Resolver>::try_plant_decl_into_local_module
  14:     0x753da4a39a8c - <rustc_resolve[41811edf1107842c]::Resolver>::try_plant_decl_into_local_module
  15:     0x753da4a39a8c - <rustc_resolve[41811edf1107842c]::Resolver>::try_plant_decl_into_local_module
  16:     0x753da4a37c4d - <rustc_resolve[41811edf1107842c]::Resolver as rustc_expand[74b331e941252b0a]::base::ResolverExpand>::resolve_imports
  17:     0x753da603f9dd - <rustc_expand[74b331e941252b0a]::expand::MacroExpander>::fully_expand_fragment
  18:     0x753da603eb52 - <rustc_expand[74b331e941252b0a]::expand::MacroExpander>::expand_crate
  19:     0x753da505b434 - rustc_interface[90afb413dadbe4f1]::passes::configure_and_expand
  20:     0x753da5b82598 - rustc_interface[90afb413dadbe4f1]::passes::resolver_for_lowering_raw
  21:     0x753da5b8230d - rustc_query_impl[7762d22649c04fd8]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[7762d22649c04fd8]::query_impl::resolver_for_lowering_raw::dynamic_query::{closure#2}::{closure#0}, rustc_middle[42069f076602ef26]::query::erase::Erased<[u8; 16usize]>>
  22:     0x753da5b822ef - <rustc_query_impl[7762d22649c04fd8]::query_impl::resolver_for_lowering_raw::dynamic_query::{closure#2} as core[75fca27d79ab979d]::ops::function::FnOnce<(rustc_middle[42069f076602ef26]::ty::context::TyCtxt, ())>>::call_once
  23:     0x753da5b5c15f - rustc_query_system[4067c90f9d31d9ad]::query::plumbing::try_execute_query::<rustc_query_impl[7762d22649c04fd8]::DynamicConfig<rustc_query_system[4067c90f9d31d9ad]::query::caches::SingleCache<rustc_middle[42069f076602ef26]::query::erase::Erased<[u8; 16usize]>>, false, false, false>, rustc_query_impl[7762d22649c04fd8]::plumbing::QueryCtxt, false>
  24:     0x753da5b5bcbc - rustc_query_impl[7762d22649c04fd8]::query_impl::resolver_for_lowering_raw::get_query_non_incr::__rust_end_short_backtrace
  25:     0x753da5d2467b - <rustc_interface[90afb413dadbe4f1]::passes::create_and_enter_global_ctxt<core[75fca27d79ab979d]::option::Option<rustc_interface[90afb413dadbe4f1]::queries::Linker>, rustc_driver_impl[8626402415690959]::run_compiler::{closure#0}::{closure#2}>::{closure#2} as core[75fca27d79ab979d]::ops::function::FnOnce<(&rustc_session[7c34b462142e1273]::session::Session, rustc_middle[42069f076602ef26]::ty::context::CurrentGcx, alloc[97bcaa3c9f42b50c]::sync::Arc<rustc_data_structures[5b2e5bcce01f3ea3]::jobserver::Proxy>, &std[14974c2a6d31bd09]::sync::once_lock::OnceLock<rustc_middle[42069f076602ef26]::ty::context::GlobalCtxt>, &rustc_data_structures[5b2e5bcce01f3ea3]::sync::worker_local::WorkerLocal<rustc_middle[42069f076602ef26]::arena::Arena>, &rustc_data_structures[5b2e5bcce01f3ea3]::sync::worker_local::WorkerLocal<rustc_hir[a6c28dd0effa383c]::Arena>, rustc_driver_impl[8626402415690959]::run_compiler::{closure#0}::{closure#2})>>::call_once::{shim:vtable#0}
  26:     0x753da5c1cf98 - rustc_interface[90afb413dadbe4f1]::interface::run_compiler::<(), rustc_driver_impl[8626402415690959]::run_compiler::{closure#0}>::{closure#1}
  27:     0x753da5a65f4e - std[14974c2a6d31bd09]::sys::backtrace::__rust_begin_short_backtrace::<rustc_interface[90afb413dadbe4f1]::util::run_in_thread_with_globals<rustc_interface[90afb413dadbe4f1]::util::run_in_thread_pool_with_globals<rustc_interface[90afb413dadbe4f1]::interface::run_compiler<(), rustc_driver_impl[8626402415690959]::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>
  28:     0x753da5a65d20 - <std[14974c2a6d31bd09]::thread::lifecycle::spawn_unchecked<rustc_interface[90afb413dadbe4f1]::util::run_in_thread_with_globals<rustc_interface[90afb413dadbe4f1]::util::run_in_thread_pool_with_globals<rustc_interface[90afb413dadbe4f1]::interface::run_compiler<(), rustc_driver_impl[8626402415690959]::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>::{closure#1} as core[75fca27d79ab979d]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
  29:     0x753da5a68438 - <std[14974c2a6d31bd09]::sys::thread::unix::Thread>::new::thread_start
  30:     0x753d9f49caa4 - <unknown>
  31:     0x753d9f529c6c - <unknown>
  32:                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: please make sure that you have updated to the latest nightly

note: please attach the file at `/home/nicolas/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/polars-plan-0.52.0/rustc-ice-2026-01-12T23_07_12-2636640.txt` to your bug report

note: rustc 1.94.0-nightly (f57eac1bf 2026-01-10) running on x86_64-unknown-linux-gnu

note: compiler flags: --crate-type lib -C opt-level=3 -C embed-bitcode=no -C strip=debuginfo

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

query stack during panic:
#0 [resolver_for_lowering_raw] getting the resolver for lowering
end of query stack
error: could not compile `polars-plan` (lib)

Contents of /home/nicolas/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/polars-plan-0.52.0/rustc-ice-2026-01-12T23_07_12-2636640.txt:

thread 'rustc' panicked at /rustc-dev/f57eac1bf98cb5d578e3364b64365ec398c137df/compiler/rustc_resolve/src/imports.rs:378:13:
assertion failed: !deep_decl.is_glob_import()
stack backtrace:
   0:     0x753da4420c4b - <std[14974c2a6d31bd09]::backtrace::Backtrace>::create
   1:     0x753da4420b95 - <std[14974c2a6d31bd09]::backtrace::Backtrace>::force_capture
   2:     0x753da34165c7 - std[14974c2a6d31bd09]::panicking::update_hook::<alloc[97bcaa3c9f42b50c]::boxed::Box<rustc_driver_impl[8626402415690959]::install_ice_hook::{closure#1}>>::{closure#0}
   3:     0x753da4434062 - std[14974c2a6d31bd09]::panicking::panic_with_hook
   4:     0x753da44161da - std[14974c2a6d31bd09]::panicking::panic_handler::{closure#0}
   5:     0x753da440a659 - std[14974c2a6d31bd09]::sys::backtrace::__rust_end_short_backtrace::<std[14974c2a6d31bd09]::panicking::panic_handler::{closure#0}, !>
   6:     0x753da4417c7d - __rustc[92b3c909df398c49]::rust_begin_unwind
   7:     0x753da184b37c - core[75fca27d79ab979d]::panicking::panic_fmt
   8:     0x753da0ca7732 - core[75fca27d79ab979d]::panicking::panic
   9:     0x753da4a3a9a1 - <rustc_resolve[41811edf1107842c]::Resolver>::try_plant_decl_into_local_module
  10:     0x753da4a39a8c - <rustc_resolve[41811edf1107842c]::Resolver>::try_plant_decl_into_local_module
  11:     0x753da4a39a8c - <rustc_resolve[41811edf1107842c]::Resolver>::try_plant_decl_into_local_module
  12:     0x753da4a39a8c - <rustc_resolve[41811edf1107842c]::Resolver>::try_plant_decl_into_local_module
  13:     0x753da4a37c4d - <rustc_resolve[41811edf1107842c]::Resolver as rustc_expand[74b331e941252b0a]::base::ResolverExpand>::resolve_imports
  14:     0x753da603f9dd - <rustc_expand[74b331e941252b0a]::expand::MacroExpander>::fully_expand_fragment
  15:     0x753da603eb52 - <rustc_expand[74b331e941252b0a]::expand::MacroExpander>::expand_crate
  16:     0x753da505b434 - rustc_interface[90afb413dadbe4f1]::passes::configure_and_expand
  17:     0x753da5b82598 - rustc_interface[90afb413dadbe4f1]::passes::resolver_for_lowering_raw
  18:     0x753da5b8230d - rustc_query_impl[7762d22649c04fd8]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[7762d22649c04fd8]::query_impl::resolver_for_lowering_raw::dynamic_query::{closure#2}::{closure#0}, rustc_middle[42069f076602ef26]::query::erase::Erased<[u8; 16usize]>>
  19:     0x753da5b822ef - <rustc_query_impl[7762d22649c04fd8]::query_impl::resolver_for_lowering_raw::dynamic_query::{closure#2} as core[75fca27d79ab979d]::ops::function::FnOnce<(rustc_middle[42069f076602ef26]::ty::context::TyCtxt, ())>>::call_once
  20:     0x753da5b5c15f - rustc_query_system[4067c90f9d31d9ad]::query::plumbing::try_execute_query::<rustc_query_impl[7762d22649c04fd8]::DynamicConfig<rustc_query_system[4067c90f9d31d9ad]::query::caches::SingleCache<rustc_middle[42069f076602ef26]::query::erase::Erased<[u8; 16usize]>>, false, false, false>, rustc_query_impl[7762d22649c04fd8]::plumbing::QueryCtxt, false>
  21:     0x753da5b5bcbc - rustc_query_impl[7762d22649c04fd8]::query_impl::resolver_for_lowering_raw::get_query_non_incr::__rust_end_short_backtrace
  22:     0x753da5d2467b - <rustc_interface[90afb413dadbe4f1]::passes::create_and_enter_global_ctxt<core[75fca27d79ab979d]::option::Option<rustc_interface[90afb413dadbe4f1]::queries::Linker>, rustc_driver_impl[8626402415690959]::run_compiler::{closure#0}::{closure#2}>::{closure#2} as core[75fca27d79ab979d]::ops::function::FnOnce<(&rustc_session[7c34b462142e1273]::session::Session, rustc_middle[42069f076602ef26]::ty::context::CurrentGcx, alloc[97bcaa3c9f42b50c]::sync::Arc<rustc_data_structures[5b2e5bcce01f3ea3]::jobserver::Proxy>, &std[14974c2a6d31bd09]::sync::once_lock::OnceLock<rustc_middle[42069f076602ef26]::ty::context::GlobalCtxt>, &rustc_data_structures[5b2e5bcce01f3ea3]::sync::worker_local::WorkerLocal<rustc_middle[42069f076602ef26]::arena::Arena>, &rustc_data_structures[5b2e5bcce01f3ea3]::sync::worker_local::WorkerLocal<rustc_hir[a6c28dd0effa383c]::Arena>, rustc_driver_impl[8626402415690959]::run_compiler::{closure#0}::{closure#2})>>::call_once::{shim:vtable#0}
  23:     0x753da5c1cf98 - rustc_interface[90afb413dadbe4f1]::interface::run_compiler::<(), rustc_driver_impl[8626402415690959]::run_compiler::{closure#0}>::{closure#1}
  24:     0x753da5a65f4e - std[14974c2a6d31bd09]::sys::backtrace::__rust_begin_short_backtrace::<rustc_interface[90afb413dadbe4f1]::util::run_in_thread_with_globals<rustc_interface[90afb413dadbe4f1]::util::run_in_thread_pool_with_globals<rustc_interface[90afb413dadbe4f1]::interface::run_compiler<(), rustc_driver_impl[8626402415690959]::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>
  25:     0x753da5a65d20 - <std[14974c2a6d31bd09]::thread::lifecycle::spawn_unchecked<rustc_interface[90afb413dadbe4f1]::util::run_in_thread_with_globals<rustc_interface[90afb413dadbe4f1]::util::run_in_thread_pool_with_globals<rustc_interface[90afb413dadbe4f1]::interface::run_compiler<(), rustc_driver_impl[8626402415690959]::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>::{closure#1} as core[75fca27d79ab979d]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
  26:     0x753da5a68438 - <std[14974c2a6d31bd09]::sys::thread::unix::Thread>::new::thread_start
  27:     0x753d9f49caa4 - <unknown>
  28:     0x753d9f529c6c - <unknown>
  29:                0x0 - <unknown>


rustc version: 1.94.0-nightly (f57eac1bf 2026-01-10)
platform: x86_64-unknown-linux-gnu

query stack during panic:
#0 [resolver_for_lowering_raw] getting the resolver for lowering
end of query stack

To reproduce:

1. cargo new demo-rust-ice-polars-plan
2. cd demo-rust-ice-polars-plan
3. cargo add polars-plan
4. cargo b or cargo b --release with faulty nightly toolchain on unknown-linux-gnu

[3v1n0]

Similar issue happens in arm-buildroot-linux-uclibcgnueabihf-gcc when building libc (see nix-rust/nix#2724):

RUST_BACKTRACE=full CARGO_TARGET_ARMV7_UNKNOWN_LINUX_UCLIBCEABIHF_RUNNER="qemu-arm -L ${TOOLCHAIN}/arm-buildroot-linux-uclibcgnueabihf/sysroot/" \                                                                                               
CARGO_TARGET_ARMV7_UNKNOWN_LINUX_UCLIBCEABIHF_LINKER=${TOOLCHAIN}/bin/arm-buildroot-linux-uclibcgnueabihf-gcc \
cargo +stage2 build --target armv7-unknown-linux-uclibceabihf
   Compiling libc v0.2.180

thread 'rustc' (91839) panicked at compiler/rustc_resolve/src/imports.rs:378:13:
assertion failed: !deep_decl.is_glob_import()
stack backtrace:
   0:     0x719bace017e8 - <<std[b6f7a79e2c09d48f]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[8995c06e8b2eda84]::fmt::Display>::fmt
   1:     0x719bace66dfa - core[8995c06e8b2eda84]::fmt::write
   2:     0x719bacdd24a2 - <std[b6f7a79e2c09d48f]::sys::stdio::unix::Stderr as std[b6f7a79e2c09d48f]::io::Write>::write_fmt
   3:     0x719bace00742 - <std[b6f7a79e2c09d48f]::sys::backtrace::BacktraceLock>::print
   4:     0x719bacde0620 - std[b6f7a79e2c09d48f]::panicking::default_hook::{closure#0}
   5:     0x719bacde22da - std[b6f7a79e2c09d48f]::panicking::default_hook
   6:     0x719ba9169ca6 - std[b6f7a79e2c09d48f]::panicking::update_hook::<alloc[d65236ff35b8557a]::boxed::Box<rustc_driver_impl[db911473d89619aa]::install_ice_hook::{closure#1}>>::{closure#0}
   7:     0x719bacde259e - std[b6f7a79e2c09d48f]::panicking::panic_with_hook
   8:     0x719bace004ca - std[b6f7a79e2c09d48f]::panicking::panic_handler::{closure#0}
   9:     0x719bacdfca99 - std[b6f7a79e2c09d48f]::sys::backtrace::__rust_end_short_backtrace::<std[b6f7a79e2c09d48f]::panicking::panic_handler::{closure#0}, !>
  10:     0x719bacde0a7d - __rustc[9f1ba9486e5c95f8]::rust_begin_unwind
  11:     0x719bace7ef1c - core[8995c06e8b2eda84]::panicking::panic_fmt
  12:     0x719bace7eee2 - core[8995c06e8b2eda84]::panicking::panic
  13:     0x719baac08a7d - <rustc_resolve[a22f2a39152d7eb5]::Resolver>::select_glob_decl
  14:     0x719baac09fda - <rustc_resolve[a22f2a39152d7eb5]::Resolver>::try_plant_decl_into_local_module
  15:     0x719baac0a225 - <rustc_resolve[a22f2a39152d7eb5]::Resolver>::try_plant_decl_into_local_module
  16:     0x719baac0a225 - <rustc_resolve[a22f2a39152d7eb5]::Resolver>::try_plant_decl_into_local_module
  17:     0x719baac0a225 - <rustc_resolve[a22f2a39152d7eb5]::Resolver>::try_plant_decl_into_local_module
  18:     0x719baac3193f - <rustc_resolve[a22f2a39152d7eb5]::Resolver as rustc_expand[29262c0277871fd2]::base::ResolverExpand>::resolve_imports
  19:     0x719bac051fb3 - <rustc_expand[29262c0277871fd2]::expand::MacroExpander>::fully_expand_fragment
  20:     0x719bac05084b - <rustc_expand[29262c0277871fd2]::expand::MacroExpander>::expand_crate
  21:     0x719ba93620d0 - <rustc_session[43431195fd0572c0]::session::Session>::time::<rustc_ast[c0af917e37882505]::ast::Crate, rustc_interface[dd6563836cde2e93]::passes::configure_and_expand::{closure#1}>
  22:     0x719ba948c1c2 - rustc_interface[dd6563836cde2e93]::passes::resolver_for_lowering_raw
  23:     0x719bab43e9a5 - rustc_query_impl[3fb1f884f5f61ddf]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[3fb1f884f5f61ddf]::query_impl::resolver_for_lowering_raw::dynamic_query::{closure#2}::{closure#0}, rustc_middle[3977d710049c3a25]::query::erase::Erased<[u8; 16usize]>>
  24:     0x719bab51b90c - <rustc_query_impl[3fb1f884f5f61ddf]::query_impl::resolver_for_lowering_raw::dynamic_query::{closure#2} as core[8995c06e8b2eda84]::ops::function::FnOnce<(rustc_middle[3977d710049c3a25]::ty::context::TyCtxt, ())>>::call_once
  25:     0x719bab3881e0 - rustc_query_system[66a4365543991dd5]::query::plumbing::try_execute_query::<rustc_query_impl[3fb1f884f5f61ddf]::DynamicConfig<rustc_query_system[66a4365543991dd5]::query::caches::SingleCache<rustc_middle[3977d710049c3a25]::query::erase::Erased<[u8; 16usize]>>, false, false, false>, rustc_query_impl[3fb1f884f5f61ddf]::plumbing::QueryCtxt, false>
  26:     0x719bab67f6ce - rustc_query_impl[3fb1f884f5f61ddf]::query_impl::resolver_for_lowering_raw::get_query_non_incr::__rust_end_short_backtrace
  27:     0x719bac4fb04b - <rustc_middle[3977d710049c3a25]::ty::context::TyCtxt>::resolver_for_lowering
  28:     0x719ba91afe89 - <std[b6f7a79e2c09d48f]::thread::local::LocalKey<core[8995c06e8b2eda84]::cell::Cell<*const ()>>>::with::<rustc_middle[3977d710049c3a25]::ty::context::tls::enter_context<<rustc_middle[3977d710049c3a25]::ty::context::GlobalCtxt>::enter<rustc_interface[dd6563836cde2e93]::passes::create_and_enter_global_ctxt<core[8995c06e8b2eda84]::option::Option<rustc_interface[dd6563836cde2e93]::queries::Linker>, rustc_driver_impl[db911473d89619aa]::run_compiler::{closure#0}::{closure#2}>::{closure#2}::{closure#0}, core[8995c06e8b2eda84]::option::Option<rustc_interface[dd6563836cde2e93]::queries::Linker>>::{closure#1}, core[8995c06e8b2eda84]::option::Option<rustc_interface[dd6563836cde2e93]::queries::Linker>>::{closure#0}, core[8995c06e8b2eda84]::option::Option<rustc_interface[dd6563836cde2e93]::queries::Linker>>
  29:     0x719ba914ff2e - <rustc_middle[3977d710049c3a25]::ty::context::TyCtxt>::create_global_ctxt::<core[8995c06e8b2eda84]::option::Option<rustc_interface[dd6563836cde2e93]::queries::Linker>, rustc_interface[dd6563836cde2e93]::passes::create_and_enter_global_ctxt<core[8995c06e8b2eda84]::option::Option<rustc_interface[dd6563836cde2e93]::queries::Linker>, rustc_driver_impl[db911473d89619aa]::run_compiler::{closure#0}::{closure#2}>::{closure#2}::{closure#0}>
  30:     0x719ba91af150 - <rustc_interface[dd6563836cde2e93]::passes::create_and_enter_global_ctxt<core[8995c06e8b2eda84]::option::Option<rustc_interface[dd6563836cde2e93]::queries::Linker>, rustc_driver_impl[db911473d89619aa]::run_compiler::{closure#0}::{closure#2}>::{closure#2} as core[8995c06e8b2eda84]::ops::function::FnOnce<(&rustc_session[43431195fd0572c0]::session::Session, rustc_middle[3977d710049c3a25]::ty::context::CurrentGcx, alloc[d65236ff35b8557a]::sync::Arc<rustc_data_structures[2040d4e300f3c8d5]::jobserver::Proxy>, &std[b6f7a79e2c09d48f]::sync::once_lock::OnceLock<rustc_middle[3977d710049c3a25]::ty::context::GlobalCtxt>, &rustc_data_structures[2040d4e300f3c8d5]::sync::worker_local::WorkerLocal<rustc_middle[3977d710049c3a25]::arena::Arena>, &rustc_data_structures[2040d4e300f3c8d5]::sync::worker_local::WorkerLocal<rustc_hir[7f6664fb7919900c]::Arena>, rustc_driver_impl[db911473d89619aa]::run_compiler::{closure#0}::{closure#2})>>::call_once::{shim:vtable#0}
  31:     0x719ba91ad469 - rustc_interface[dd6563836cde2e93]::passes::create_and_enter_global_ctxt::<core[8995c06e8b2eda84]::option::Option<rustc_interface[dd6563836cde2e93]::queries::Linker>, rustc_driver_impl[db911473d89619aa]::run_compiler::{closure#0}::{closure#2}>
  32:     0x719ba914af85 - rustc_interface[dd6563836cde2e93]::interface::run_compiler::<(), rustc_driver_impl[db911473d89619aa]::run_compiler::{closure#0}>::{closure#1}
  33:     0x719ba913d4de - rustc_span[22d488d7cc2be363]::create_session_globals_then::<(), rustc_interface[dd6563836cde2e93]::util::run_in_thread_with_globals<rustc_interface[dd6563836cde2e93]::util::run_in_thread_pool_with_globals<rustc_interface[dd6563836cde2e93]::interface::run_compiler<(), rustc_driver_impl[db911473d89619aa]::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}::{closure#0}>
  34:     0x719ba9169528 - std[b6f7a79e2c09d48f]::sys::backtrace::__rust_begin_short_backtrace::<rustc_interface[dd6563836cde2e93]::util::run_in_thread_with_globals<rustc_interface[dd6563836cde2e93]::util::run_in_thread_pool_with_globals<rustc_interface[dd6563836cde2e93]::interface::run_compiler<(), rustc_driver_impl[db911473d89619aa]::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>
  35:     0x719ba91b9686 - <std[b6f7a79e2c09d48f]::thread::lifecycle::spawn_unchecked<rustc_interface[dd6563836cde2e93]::util::run_in_thread_with_globals<rustc_interface[dd6563836cde2e93]::util::run_in_thread_pool_with_globals<rustc_interface[dd6563836cde2e93]::interface::run_compiler<(), rustc_driver_impl[db911473d89619aa]::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>::{closure#1} as core[8995c06e8b2eda84]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
  36:     0x719bace386fe - <std[b6f7a79e2c09d48f]::sys::thread::unix::Thread>::new::thread_start
  37:     0x719ba749caa4 - start_thread
                               at ./nptl/pthread_create.c:447:8
  38:     0x719ba7529c6c - clone3
                               at ./misc/../sysdeps/unix/sysv/linux/x86_64/clone3.S:78:0
  39:                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: please make sure that you have updated to the latest nightly

note: please attach the file at `/tmp/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/libc-0.2.180/rustc-ice-2026-01-13T03_22_26-91837.txt` to your bug report

note: rustc 1.94.0-dev running on x86_64-unknown-linux-gnu

note: compiler flags: --crate-type lib -C embed-bitcode=no -C debuginfo=2 -C linker=/tmp/armv7-eabihf--uclibc--bleeding-edge-2025.08-1/bin/arm-buildroot-linux-uclibcgnueabihf-gcc

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

query stack during panic:
#0 [resolver_for_lowering_raw] getting the resolver for lowering
end of query stack
error: could not compile `libc` (lib)

Caused by:
  process didn't exit successfully: `/home/marco/.rustup/toolchains/stage2/bin/rustc --crate-name libc --edition=2021 /tmp/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/libc-0.2.180/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --diagnostic-width=132 --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 '--allow=clippy::used_underscore_binding' --allow=unused_qualifications '--warn=clippy::unnecessary_semicolon' '--allow=clippy::unnecessary_cast' '--allow=clippy::uninlined_format_args' '--warn=clippy::ptr_as_ptr' '--allow=clippy::non_minimal_cfg' '--allow=clippy::missing_safety_doc' '--warn=clippy::map_unwrap_or' '--warn=clippy::manual_assert' '--allow=clippy::identity_op' '--warn=clippy::explicit_iter_loop' '--allow=clippy::expl_impl_clone_on_copy' --cfg 'feature="default"' --cfg 'feature="extra_traits"' --cfg 'feature="std"' --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values("align", "const-extern-fn", "default", "extra_traits", "rustc-dep-of-std", "rustc-std-workspace-core", "std", "use_std"))' -C metadata=cd82eab17a381bab -C extra-filename=-7808f487d4e8304d --out-dir /home/marco/Dev/tmp/rust-hacking/nix/target/armv7-unknown-linux-uclibceabihf/debug/deps --target armv7-unknown-linux-uclibceabihf -C linker=/tmp/armv7-eabihf--uclibc--bleeding-edge-2025.08-1/bin/arm-buildroot-linux-uclibcgnueabihf-gcc -L dependency=/home/marco/Dev/tmp/rust-hacking/nix/target/armv7-unknown-linux-uclibceabihf/debug/deps -L dependency=/home/marco/Dev/tmp/rust-hacking/nix/target/debug/deps --cap-lints allow --cfg freebsd12 --check-cfg 'cfg(emscripten_old_stat_abi)' --check-cfg 'cfg(espidf_time32)' --check-cfg 'cfg(freebsd10)' --check-cfg 'cfg(freebsd11)' --check-cfg 'cfg(freebsd12)' --check-cfg 'cfg(freebsd13)' --check-cfg 'cfg(freebsd14)' --check-cfg 'cfg(freebsd15)' --check-cfg 'cfg(gnu_file_offset_bits64)' --check-cfg 'cfg(gnu_time_bits64)' --check-cfg 'cfg(libc_deny_warnings)' --check-cfg 'cfg(linux_time_bits64)' --check-cfg 'cfg(musl_v1_2_3)' --check-cfg 'cfg(musl32_time64)' --check-cfg 'cfg(vxworks_lt_25_09)' --check-cfg 'cfg(target_os,values("switch","aix","ohos","hurd","rtems","visionos","nuttx","cygwin","qurt"))' --check-cfg 'cfg(target_env,values("illumos","wasi","aix","ohos","nto71_iosock","nto80"))' --check-cfg 'cfg(target_arch,values("loongarch64","mips32r6","mips64r6","csky"))'` (exit status: 101)

Attaching file too, even though it does not adds much more:

rustc-ice-2026-01-13T03_22_26-91837.txt

[petrochenkov]

Fixed in #150939 (tested locally).