ICE: rustc_query_system: dep_graph: assertion failed (dep node index out of range)

[olekspickle]

No idea how it came into existence, but people in rust discord said it's better to submit the bug.
The code can be found here, but I only stumbled on it once so it is not reproducible at least for me.

Version info:

rustc 1.89.0-nightly (c68340350 2025-06-18)
binary: rustc
commit-hash: c68340350c78eea402c4a85f8d9c1b7d3d607635
commit-date: 2025-06-18
host: x86_64-unknown-linux-gnu
release: 1.89.0-nightly
LLVM version: 20.1.7

Compiler flags:

--crate-type lib -C opt-level=1 -C embed-bitcode=no -Z codegen-backend=cranelift -C debuginfo=2 -C debug-assertions=on -C linker=clang -C incremental=[REDACTED] -Z unstable-options -C link-arg=-fuse-ld=mold -Z share-generics=y -Z threads=0

Compiler output:

thread 'rustc' panicked at /rustc-dev/c68340350c78eea402c4a85f8d9c1b7d3d607635/compiler/rustc_query_system/src/dep_graph/graph.rs:43:1:
assertion failed: value <= 0xFFFF_FF00

Full compiler output

thread 'rustc' panicked at /rustc-dev/c68340350c78eea402c4a85f8d9c1b7d3d607635/compiler/rustc_query_system/src/dep_graph/graph.rs:43:1:
assertion failed: value <= 0xFFFF_FF00
stack backtrace:
   0:     0x7a7d6bed9b75 - std::backtrace::Backtrace::create::he5af7a5d59a40e3c
   1:     0x7a7d6bed9ac5 - std::backtrace::Backtrace::force_capture::hcea9d7ed40ac797f
   2:     0x7a7d6afe5e45 - std[f465230902baf24e]::panicking::update_hook::<alloc[5a24e98c206f3295]::boxed::Box<rustc_driver_impl[f7eaba4e4346ab0a]::install_ice_hook::{closure#1}>>::{closure#0}
   3:     0x7a7d6bef3d63 - std::panicking::rust_panic_with_hook::hccb645e1224c3ca9
   4:     0x7a7d6bef3a26 - std::panicking::begin_panic_handler::{{closure}}::h08eda9fea8547d73
   5:     0x7a7d6beeff89 - std::sys::backtrace::__rust_end_short_backtrace::h6189b6d534638e87
   6:     0x7a7d6bef373d - __rustc[f040de39e224b0e1]::rust_begin_unwind
   7:     0x7a7d686987c0 - core::panicking::panic_fmt::hb65b230fa9b6abb2
   8:     0x7a7d6880c97c - core::panicking::panic::h8ea9db73ed4f9b31
   9:     0x7a7d6c625d9f - <rustc_query_system[aa99c3eb613fb748]::dep_graph::graph::DepGraphData<rustc_middle[cb74f7c7c36a888d]::dep_graph::DepsType>>::try_mark_previous_green::<rustc_query_impl[48702a16f9c597ba]::plumbing::QueryCtxt>
  10:     0x7a7d6c6257cc - <rustc_query_system[aa99c3eb613fb748]::dep_graph::graph::DepGraphData<rustc_middle[cb74f7c7c36a888d]::dep_graph::DepsType>>::try_mark_previous_green::<rustc_query_impl[48702a16f9c597ba]::plumbing::QueryCtxt>
  11:     0x7a7d6c6257cc - <rustc_query_system[aa99c3eb613fb748]::dep_graph::graph::DepGraphData<rustc_middle[cb74f7c7c36a888d]::dep_graph::DepsType>>::try_mark_previous_green::<rustc_query_impl[48702a16f9c597ba]::plumbing::QueryCtxt>
  12:     0x7a7d6c7bd3fe - rustc_query_system[aa99c3eb613fb748]::query::plumbing::ensure_must_run::<rustc_query_impl[48702a16f9c597ba]::DynamicConfig<rustc_data_structures[99add3e81104b44c]::vec_cache::VecCache<rustc_span[386b88b018424990]::def_id::LocalDefId, rustc_middle[cb74f7c7c36a888d]::query::erase::Erased<[u8; 0usize]>, rustc_query_system[aa99c3eb613fb748]::dep_graph::graph::DepNodeIndex>, false, false, false>, rustc_query_impl[48702a16f9c597ba]::plumbing::QueryCtxt>
  13:     0x7a7d6c7bd758 - rustc_query_impl[48702a16f9c597ba]::query_impl::mir_drops_elaborated_and_const_checked::get_query_incr::__rust_end_short_backtrace
  14:     0x7a7d6cf64586 - <rustc_middle[cb74f7c7c36a888d]::ty::context::TyCtxt>::par_hir_body_owners::<rustc_interface[df2f81cb2296ca6c]::passes::run_required_analyses::{closure#1}::{closure#0}>::{closure#0}
  15:     0x7a7d6b3cf63c - rustc_data_structures[99add3e81104b44c]::sync::parallel::par_slice::par_rec::<&rustc_span[386b88b018424990]::def_id::LocalDefId, rustc_data_structures[99add3e81104b44c]::sync::parallel::par_for_each_in<&rustc_span[386b88b018424990]::def_id::LocalDefId, &[rustc_span[386b88b018424990]::def_id::LocalDefId], <rustc_middle[cb74f7c7c36a888d]::ty::context::TyCtxt>::par_hir_body_owners<rustc_interface[df2f81cb2296ca6c]::passes::run_required_analyses::{closure#1}::{closure#0}>::{closure#0}>::{closure#0}::{closure#0}>
  16:     0x7a7d6b3e6318 - rayon_core[91bb91cfcd883918]::join::join_context::<rayon_core[91bb91cfcd883918]::join::join::call<(), rustc_data_structures[99add3e81104b44c]::sync::parallel::par_slice::par_rec<&rustc_span[386b88b018424990]::def_id::LocalDefId, rustc_data_structures[99add3e81104b44c]::sync::parallel::par_for_each_in<&rustc_span[386b88b018424990]::def_id::LocalDefId, &[rustc_span[386b88b018424990]::def_id::LocalDefId], <rustc_middle[cb74f7c7c36a888d]::ty::context::TyCtxt>::par_hir_body_owners<rustc_interface[df2f81cb2296ca6c]::passes::run_required_analyses::{closure#1}::{closure#0}>::{closure#0}>::{closure#0}::{closure#0}>::{closure#1}>::{closure#0}, rayon_core[91bb91cfcd883918]::join::join::call<(), rustc_data_structures[99add3e81104b44c]::sync::parallel::par_slice::par_rec<&rustc_span[386b88b018424990]::def_id::LocalDefId, rustc_data_structures[99add3e81104b44c]::sync::parallel::par_for_each_in<&rustc_span[386b88b018424990]::def_id::LocalDefId, &[rustc_span[386b88b018424990]::def_id::LocalDefId], <rustc_middle[cb74f7c7c36a888d]::ty::context::TyCtxt>::par_hir_body_owners<rustc_interface[df2f81cb2296ca6c]::passes::run_required_analyses::{closure#1}::{closure#0}>::{closure#0}>::{closure#0}::{closure#0}>::{closure#2}>::{closure#0}, (), ()>::{closure#0}
  17:     0x7a7d6b3cf6da - rustc_data_structures[99add3e81104b44c]::sync::parallel::par_slice::par_rec::<&rustc_span[386b88b018424990]::def_id::LocalDefId, rustc_data_structures[99add3e81104b44c]::sync::parallel::par_for_each_in<&rustc_span[386b88b018424990]::def_id::LocalDefId, &[rustc_span[386b88b018424990]::def_id::LocalDefId], <rustc_middle[cb74f7c7c36a888d]::ty::context::TyCtxt>::par_hir_body_owners<rustc_interface[df2f81cb2296ca6c]::passes::run_required_analyses::{closure#1}::{closure#0}>::{closure#0}>::{closure#0}::{closure#0}>
  18:     0x7a7d6b400260 - <rayon_core[91bb91cfcd883918]::job::StackJob<rayon_core[91bb91cfcd883918]::latch::SpinLatch, rayon_core[91bb91cfcd883918]::join::join_context::call_b<(), rayon_core[91bb91cfcd883918]::join::join::call<(), rustc_data_structures[99add3e81104b44c]::sync::parallel::par_slice::par_rec<&rustc_span[386b88b018424990]::def_id::LocalDefId, rustc_data_structures[99add3e81104b44c]::sync::parallel::par_for_each_in<&rustc_span[386b88b018424990]::def_id::LocalDefId, &[rustc_span[386b88b018424990]::def_id::LocalDefId], <rustc_middle[cb74f7c7c36a888d]::ty::context::TyCtxt>::par_hir_body_owners<rustc_interface[df2f81cb2296ca6c]::passes::run_required_analyses::{closure#1}::{closure#0}>::{closure#0}>::{closure#0}::{closure#0}>::{closure#2}>::{closure#0}>::{closure#0}, ()> as rayon_core[91bb91cfcd883918]::job::Job>::execute
  19:     0x7a7d6aaf540e - <rayon_core[91bb91cfcd883918]::registry::WorkerThread>::wait_until_cold
  20:     0x7a7d6b3e63a2 - rayon_core[91bb91cfcd883918]::join::join_context::<rayon_core[91bb91cfcd883918]::join::join::call<(), rustc_data_structures[99add3e81104b44c]::sync::parallel::par_slice::par_rec<&rustc_span[386b88b018424990]::def_id::LocalDefId, rustc_data_structures[99add3e81104b44c]::sync::parallel::par_for_each_in<&rustc_span[386b88b018424990]::def_id::LocalDefId, &[rustc_span[386b88b018424990]::def_id::LocalDefId], <rustc_middle[cb74f7c7c36a888d]::ty::context::TyCtxt>::par_hir_body_owners<rustc_interface[df2f81cb2296ca6c]::passes::run_required_analyses::{closure#1}::{closure#0}>::{closure#0}>::{closure#0}::{closure#0}>::{closure#1}>::{closure#0}, rayon_core[91bb91cfcd883918]::join::join::call<(), rustc_data_structures[99add3e81104b44c]::sync::parallel::par_slice::par_rec<&rustc_span[386b88b018424990]::def_id::LocalDefId, rustc_data_structures[99add3e81104b44c]::sync::parallel::par_for_each_in<&rustc_span[386b88b018424990]::def_id::LocalDefId, &[rustc_span[386b88b018424990]::def_id::LocalDefId], <rustc_middle[cb74f7c7c36a888d]::ty::context::TyCtxt>::par_hir_body_owners<rustc_interface[df2f81cb2296ca6c]::passes::run_required_analyses::{closure#1}::{closure#0}>::{closure#0}>::{closure#0}::{closure#0}>::{closure#2}>::{closure#0}, (), ()>::{closure#0}
  21:     0x7a7d6b3cf6da - rustc_data_structures[99add3e81104b44c]::sync::parallel::par_slice::par_rec::<&rustc_span[386b88b018424990]::def_id::LocalDefId, rustc_data_structures[99add3e81104b44c]::sync::parallel::par_for_each_in<&rustc_span[386b88b018424990]::def_id::LocalDefId, &[rustc_span[386b88b018424990]::def_id::LocalDefId], <rustc_middle[cb74f7c7c36a888d]::ty::context::TyCtxt>::par_hir_body_owners<rustc_interface[df2f81cb2296ca6c]::passes::run_required_analyses::{closure#1}::{closure#0}>::{closure#0}>::{closure#0}::{closure#0}>
  22:     0x7a7d6b3e62a9 - rayon_core[91bb91cfcd883918]::join::join_context::<rayon_core[91bb91cfcd883918]::join::join::call<(), rustc_data_structures[99add3e81104b44c]::sync::parallel::par_slice::par_rec<&rustc_span[386b88b018424990]::def_id::LocalDefId, rustc_data_structures[99add3e81104b44c]::sync::parallel::par_for_each_in<&rustc_span[386b88b018424990]::def_id::LocalDefId, &[rustc_span[386b88b018424990]::def_id::LocalDefId], <rustc_middle[cb74f7c7c36a888d]::ty::context::TyCtxt>::par_hir_body_owners<rustc_interface[df2f81cb2296ca6c]::passes::run_required_analyses::{closure#1}::{closure#0}>::{closure#0}>::{closure#0}::{closure#0}>::{closure#1}>::{closure#0}, rayon_core[91bb91cfcd883918]::join::join::call<(), rustc_data_structures[99add3e81104b44c]::sync::parallel::par_slice::par_rec<&rustc_span[386b88b018424990]::def_id::LocalDefId, rustc_data_structures[99add3e81104b44c]::sync::parallel::par_for_each_in<&rustc_span[386b88b018424990]::def_id::LocalDefId, &[rustc_span[386b88b018424990]::def_id::LocalDefId], <rustc_middle[cb74f7c7c36a888d]::ty::context::TyCtxt>::par_hir_body_owners<rustc_interface[df2f81cb2296ca6c]::passes::run_required_analyses::{closure#1}::{closure#0}>::{closure#0}>::{closure#0}::{closure#0}>::{closure#2}>::{closure#0}, (), ()>::{closure#0}
  23:     0x7a7d6b3cf6da - rustc_data_structures[99add3e81104b44c]::sync::parallel::par_slice::par_rec::<&rustc_span[386b88b018424990]::def_id::LocalDefId, rustc_data_structures[99add3e81104b44c]::sync::parallel::par_for_each_in<&rustc_span[386b88b018424990]::def_id::LocalDefId, &[rustc_span[386b88b018424990]::def_id::LocalDefId], <rustc_middle[cb74f7c7c36a888d]::ty::context::TyCtxt>::par_hir_body_owners<rustc_interface[df2f81cb2296ca6c]::passes::run_required_analyses::{closure#1}::{closure#0}>::{closure#0}>::{closure#0}::{closure#0}>
  24:     0x7a7d6b400260 - <rayon_core[91bb91cfcd883918]::job::StackJob<rayon_core[91bb91cfcd883918]::latch::SpinLatch, rayon_core[91bb91cfcd883918]::join::join_context::call_b<(), rayon_core[91bb91cfcd883918]::join::join::call<(), rustc_data_structures[99add3e81104b44c]::sync::parallel::par_slice::par_rec<&rustc_span[386b88b018424990]::def_id::LocalDefId, rustc_data_structures[99add3e81104b44c]::sync::parallel::par_for_each_in<&rustc_span[386b88b018424990]::def_id::LocalDefId, &[rustc_span[386b88b018424990]::def_id::LocalDefId], <rustc_middle[cb74f7c7c36a888d]::ty::context::TyCtxt>::par_hir_body_owners<rustc_interface[df2f81cb2296ca6c]::passes::run_required_analyses::{closure#1}::{closure#0}>::{closure#0}>::{closure#0}::{closure#0}>::{closure#2}>::{closure#0}>::{closure#0}, ()> as rayon_core[91bb91cfcd883918]::job::Job>::execute
  25:     0x7a7d6aaf540e - <rayon_core[91bb91cfcd883918]::registry::WorkerThread>::wait_until_cold
  26:     0x7a7d6aaf2e21 - <rayon_core[91bb91cfcd883918]::registry::ThreadBuilder>::run
  27:     0x7a7d6afdbb7d - std[f465230902baf24e]::sys::backtrace::__rust_begin_short_backtrace::<<rayon_core[91bb91cfcd883918]::ThreadPoolBuilder>::build_scoped<rustc_interface[df2f81cb2296ca6c]::util::run_in_thread_pool_with_globals<rustc_interface[df2f81cb2296ca6c]::interface::run_compiler<(), rustc_driver_impl[f7eaba4e4346ab0a]::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#5}::{closure#0}::{closure#0}, rustc_interface[df2f81cb2296ca6c]::util::run_in_thread_pool_with_globals<rustc_interface[df2f81cb2296ca6c]::interface::run_compiler<(), rustc_driver_impl[f7eaba4e4346ab0a]::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#5}::{closure#0}::{closure#1}, ()>::{closure#0}::{closure#0}::{closure#0}, ()>
  28:     0x7a7d6afea532 - <<std[f465230902baf24e]::thread::Builder>::spawn_unchecked_<<rayon_core[91bb91cfcd883918]::ThreadPoolBuilder>::build_scoped<rustc_interface[df2f81cb2296ca6c]::util::run_in_thread_pool_with_globals<rustc_interface[df2f81cb2296ca6c]::interface::run_compiler<(), rustc_driver_impl[f7eaba4e4346ab0a]::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#5}::{closure#0}::{closure#0}, rustc_interface[df2f81cb2296ca6c]::util::run_in_thread_pool_with_globals<rustc_interface[df2f81cb2296ca6c]::interface::run_compiler<(), rustc_driver_impl[f7eaba4e4346ab0a]::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#5}::{closure#0}::{closure#1}, ()>::{closure#0}::{closure#0}::{closure#0}, ()>::{closure#1} as core[f335c14d4392cab8]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
  29:     0x7a7d6d835083 - std::sys::pal::unix::thread::Thread::new::thread_start::hdee893a02c3d3f2e
  30:     0x7a7d6709caa4 - start_thread
                               at ./nptl/pthread_create.c:447:8
  31:     0x7a7d67129c3c - clone3
                               at ./misc/../sysdeps/unix/sysv/linux/x86_64/clone3.S:78:0
  32:                0x0 - <unknown>


rustc version: 1.89.0-nightly (c68340350 2025-06-18)
platform: x86_64-unknown-linux-gnu

query stack during panic:
#0 [analysis] running analysis passes on this crate
end of query stack

rustc-ice-2025-06-19T12_41_08-530758.txt