[INFO] fetching crate option_trait 1.0.7... [INFO] testing option_trait-1.0.7 against 1.91.0 for beta-1.92-2 [INFO] extracting crate option_trait 1.0.7 into /workspace/builds/worker-3-tc1/source [INFO] started tweaking crates.io crate option_trait 1.0.7 [INFO] finished tweaking crates.io crate option_trait 1.0.7 [INFO] tweaked toml for crates.io crate option_trait 1.0.7 written to /workspace/builds/worker-3-tc1/source/Cargo.toml [INFO] validating manifest of crates.io crate option_trait 1.0.7 on toolchain 1.91.0 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate crates.io crate option_trait 1.0.7 already has a lockfile, it will not be regenerated [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Updating crates.io index [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded moddef v0.2.6 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] d10ea4d753f13cad3810e2590c57f81cf500c2782b82818a6f0d3d86ff9af20c [INFO] running `Command { std: "docker" "start" "-a" "d10ea4d753f13cad3810e2590c57f81cf500c2782b82818a6f0d3d86ff9af20c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "d10ea4d753f13cad3810e2590c57f81cf500c2782b82818a6f0d3d86ff9af20c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d10ea4d753f13cad3810e2590c57f81cf500c2782b82818a6f0d3d86ff9af20c", kill_on_drop: false }` [INFO] [stdout] d10ea4d753f13cad3810e2590c57f81cf500c2782b82818a6f0d3d86ff9af20c [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] e0648c7406bb581c336a072ee15382679ad01686173b32e7705aa15497a149c0 [INFO] running `Command { std: "docker" "start" "-a" "e0648c7406bb581c336a072ee15382679ad01686173b32e7705aa15497a149c0", kill_on_drop: false }` [INFO] [stderr] Compiling moddef v0.2.6 [INFO] [stderr] Compiling option_trait v1.0.7 (/opt/rustwide/workdir) [INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel [INFO] [stdout] --> src/lib.rs:4:1 [INFO] [stdout] | [INFO] [stdout] 4 | #![feature(const_trait_impl)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel [INFO] [stdout] --> src/lib.rs:5:1 [INFO] [stdout] | [INFO] [stdout] 5 | #![feature(auto_traits)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel [INFO] [stdout] --> src/lib.rs:6:1 [INFO] [stdout] | [INFO] [stdout] 6 | #![feature(negative_impls)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel [INFO] [stdout] --> src/lib.rs:7:1 [INFO] [stdout] | [INFO] [stdout] 7 | #![feature(try_trait_v2_yeet)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel [INFO] [stdout] --> src/lib.rs:8:1 [INFO] [stdout] | [INFO] [stdout] 8 | #![feature(unboxed_closures)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel [INFO] [stdout] --> src/lib.rs:9:1 [INFO] [stdout] | [INFO] [stdout] 9 | #![feature(associated_type_defaults)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel [INFO] [stdout] --> src/lib.rs:10:1 [INFO] [stdout] | [INFO] [stdout] 10 | #![feature(associated_const_equality)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel [INFO] [stdout] --> src/lib.rs:11:1 [INFO] [stdout] | [INFO] [stdout] 11 | #![feature(structural_match)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel [INFO] [stdout] --> src/lib.rs:12:1 [INFO] [stdout] | [INFO] [stdout] 12 | #![feature(core_intrinsics)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel [INFO] [stdout] --> src/lib.rs:13:1 [INFO] [stdout] | [INFO] [stdout] 13 | #![feature(const_eval_select)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel [INFO] [stdout] --> src/lib.rs:14:1 [INFO] [stdout] | [INFO] [stdout] 14 | #![feature(const_deref)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel [INFO] [stdout] --> src/lib.rs:15:1 [INFO] [stdout] | [INFO] [stdout] 15 | #![feature(specialization)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel [INFO] [stdout] --> src/lib.rs:16:1 [INFO] [stdout] | [INFO] [stdout] 16 | #![feature(generic_const_exprs)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the feature `specialization` is incomplete and may not be safe to use and/or cause compiler crashes [INFO] [stdout] --> src/lib.rs:15:12 [INFO] [stdout] | [INFO] [stdout] 15 | #![feature(specialization)] [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: see issue #31844 for more information [INFO] [stdout] = help: consider using `min_specialization` instead, which is more stable and complete [INFO] [stdout] = note: `#[warn(incomplete_features)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the feature `generic_const_exprs` is incomplete and may not be safe to use and/or cause compiler crashes [INFO] [stdout] --> src/lib.rs:16:12 [INFO] [stdout] | [INFO] [stdout] 16 | #![feature(generic_const_exprs)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: see issue #76560 for more information [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0635]: unknown feature `const_deref` [INFO] [stdout] --> src/lib.rs:14:12 [INFO] [stdout] | [INFO] [stdout] 14 | #![feature(const_deref)] [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0658]: use of unstable const library feature `const_convert` [INFO] [stdout] --> src/opt_cell.rs:1636:15 [INFO] [stdout] | [INFO] [stdout] 1636 | impl const Deref for OptCell [INFO] [stdout] | ^^^^^ trait is not stable as const yet [INFO] [stdout] | [INFO] [stdout] = note: see issue #143773 for more information [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0658]: use of unstable const library feature `const_convert` [INFO] [stdout] --> src/opt_cell.rs:1645:15 [INFO] [stdout] | [INFO] [stdout] 1645 | impl const DerefMut for OptCell [INFO] [stdout] | ^^^^^^^^ trait is not stable as const yet [INFO] [stdout] | [INFO] [stdout] = note: see issue #143773 for more information [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0658]: use of unstable const library feature `const_convert` [INFO] [stdout] --> src/opt_cell.rs:1095:19 [INFO] [stdout] | [INFO] [stdout] 1095 | T: ~const Deref + 'a [INFO] [stdout] | ------ ^^^^^ [INFO] [stdout] | | [INFO] [stdout] | trait is not stable as const yet [INFO] [stdout] | [INFO] [stdout] = note: see issue #143773 for more information [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0658]: use of unstable const library feature `const_convert` [INFO] [stdout] --> src/opt_cell.rs:1124:19 [INFO] [stdout] | [INFO] [stdout] 1124 | T: ~const DerefMut + 'a [INFO] [stdout] | ------ ^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | trait is not stable as const yet [INFO] [stdout] | [INFO] [stdout] = note: see issue #143773 for more information [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] [INFO] [stderr] thread 'rustc' (35) panicked at /rustc-dev/f8297e351a40c1439a467bbbb6879088047f50b3/compiler/rustc_type_ir/src/binder.rs:776:9: [INFO] [stderr] type parameter `T/#1` (T/#1/1) out of range when instantiating, args=[?2t] [INFO] [stderr] stack backtrace: [INFO] [stderr] 0: 0x71f57be50a23 - ::fmt::h4e0a3aeea0f9c085 [INFO] [stderr] 1: 0x71f57c601bd8 - core::fmt::write::hecf68a131630c74d [INFO] [stderr] 2: 0x71f57dcb57af - std::io::Write::write_fmt::h93c9a261259c931a [INFO] [stderr] 3: 0x71f57be15ee2 - std::sys::backtrace::BacktraceLock::print::h75160192768e5621 [INFO] [stderr] 4: 0x71f57be1be39 - std::panicking::default_hook::{{closure}}::h14d82797cfb1ddcb [INFO] [stderr] 5: 0x71f57be1b963 - std::panicking::default_hook::h63f9bf8161c5d325 [INFO] [stderr] 6: 0x71f57ae024e7 - std[752e03a6421f8218]::panicking::update_hook::>::{closure#0} [INFO] [stderr] 7: 0x71f57be1c25f - std::panicking::panic_with_hook::h3173740e06bd0752 [INFO] [stderr] 8: 0x71f57be1c01a - std::panicking::panic_handler::{{closure}}::hbac492c61eb56a87 [INFO] [stderr] 9: 0x71f57be16029 - std::sys::backtrace::__rust_end_short_backtrace::haa3eac3df9535320 [INFO] [stderr] 10: 0x71f57bdf698d - __rustc[de0091b922c53d7e]::rust_begin_unwind [INFO] [stderr] 11: 0x71f5784e7940 - core::panicking::panic_fmt::h5138da2ef87be35b [INFO] [stderr] 12: 0x71f57b41b859 - >::type_param_out_of_range [INFO] [stderr] 13: 0x71f57c6db515 - as rustc_type_ir[bbc5d72d4c267751]::fold::TypeFolder>::fold_ty [INFO] [stderr] 14: 0x71f57c6d6d4e - <&rustc_middle[d4b0c03c541beb2b]::ty::list::RawList<(), rustc_middle[d4b0c03c541beb2b]::ty::generic_args::GenericArg> as rustc_type_ir[bbc5d72d4c267751]::fold::TypeFoldable>::fold_with::> [INFO] [stderr] 15: 0x71f57e4067bd - as rustc_type_ir[bbc5d72d4c267751]::fold::TypeFolder>::fold_const.cold [INFO] [stderr] 16: 0x71f57cafadc1 - rustc_trait_selection[d6833817165672cc]::traits::project::confirm_candidate [INFO] [stderr] 17: 0x71f57cb0581f - rustc_trait_selection[d6833817165672cc]::traits::project::opt_normalize_projection_term [INFO] [stderr] 18: 0x71f57cb01725 - ::commit_if_ok:: [INFO] [stderr] 19: 0x71f57c60ce40 - ::evaluate_predicate_recursively [INFO] [stderr] 20: 0x71f57c754415 - ::candidate_from_obligation::{closure#0}::{closure#0} [INFO] [stderr] 21: 0x71f57c6b7c46 - ::poly_select::{closure#0} [INFO] [stderr] 22: 0x71f57ce6168d - ::process_obligation [INFO] [stderr] 23: 0x71f57c604dc9 - >::process_obligations:: [INFO] [stderr] 24: 0x71f57ccc4faa - as rustc_infer[d00850cb7b066a06]::traits::engine::TraitEngine>::select_all_or_error [INFO] [stderr] 25: 0x71f57d9eed7e - rustc_hir_analysis[89ecafbf117ed272]::check::wfcheck::check_trait [INFO] [stderr] 26: 0x71f57d1eadc4 - rustc_hir_analysis[89ecafbf117ed272]::check::check::check_item_type [INFO] [stderr] 27: 0x71f57d1e31db - rustc_hir_analysis[89ecafbf117ed272]::check::wfcheck::check_well_formed [INFO] [stderr] 28: 0x71f57d1e31a3 - rustc_query_impl[105cc161e39911be]::plumbing::__rust_begin_short_backtrace::> [INFO] [stderr] 29: 0x71f57d1e29e3 - rustc_query_system[eecf37c567c7c9f0]::query::plumbing::try_execute_query::, rustc_query_system[eecf37c567c7c9f0]::dep_graph::graph::DepNodeIndex>, false, false, false>, rustc_query_impl[105cc161e39911be]::plumbing::QueryCtxt, false> [INFO] [stderr] 30: 0x71f57d1e2502 - rustc_query_impl[105cc161e39911be]::query_impl::check_well_formed::get_query_non_incr::__rust_end_short_backtrace [INFO] [stderr] 31: 0x71f57d1dfacd - rustc_hir_analysis[89ecafbf117ed272]::check::wfcheck::check_type_wf [INFO] [stderr] 32: 0x71f57d1df9d5 - rustc_query_impl[105cc161e39911be]::plumbing::__rust_begin_short_backtrace::> [INFO] [stderr] 33: 0x71f57d7301d4 - rustc_query_system[eecf37c567c7c9f0]::query::plumbing::try_execute_query::>, false, false, false>, rustc_query_impl[105cc161e39911be]::plumbing::QueryCtxt, false> [INFO] [stderr] 34: 0x71f57d72ffb6 - rustc_query_impl[105cc161e39911be]::query_impl::check_type_wf::get_query_non_incr::__rust_end_short_backtrace [INFO] [stderr] 35: 0x71f57cc8d6ba - rustc_hir_analysis[89ecafbf117ed272]::check_crate [INFO] [stderr] 36: 0x71f57c82467e - rustc_interface[356b87dbb86a0c69]::passes::analysis [INFO] [stderr] 37: 0x71f57c82434b - rustc_query_impl[105cc161e39911be]::plumbing::__rust_begin_short_backtrace::> [INFO] [stderr] 38: 0x71f57d736960 - rustc_query_system[eecf37c567c7c9f0]::query::plumbing::try_execute_query::>, false, false, false>, rustc_query_impl[105cc161e39911be]::plumbing::QueryCtxt, false> [INFO] [stderr] 39: 0x71f57d7365b6 - rustc_query_impl[105cc161e39911be]::query_impl::analysis::get_query_non_incr::__rust_end_short_backtrace [INFO] [stderr] 40: 0x71f57d8bea24 - rustc_interface[356b87dbb86a0c69]::passes::create_and_enter_global_ctxt::, rustc_driver_impl[7060c14ee153e4be]::run_compiler::{closure#0}::{closure#2}>::{closure#2}::{closure#0} [INFO] [stderr] 41: 0x71f57d8ae6be - rustc_interface[356b87dbb86a0c69]::interface::run_compiler::<(), rustc_driver_impl[7060c14ee153e4be]::run_compiler::{closure#0}>::{closure#1} [INFO] [stderr] 42: 0x71f57d7de7b8 - std[752e03a6421f8218]::sys::backtrace::__rust_begin_short_backtrace::::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()> [INFO] [stderr] 43: 0x71f57d7de49c - <::spawn_unchecked_::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>::{closure#1} as core[23fa5c620bd8b707]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0} [INFO] [stderr] 44: 0x71f57d7e4a6f - std::sys::thread::unix::Thread::new::thread_start::h38da0f633f090ce2 [INFO] [stderr] 45: 0x71f57708aaa4 - [INFO] [stderr] 46: 0x71f577117a64 - clone [INFO] [stderr] 47: 0x0 - [INFO] [stderr] [INFO] [stderr] error: the compiler unexpectedly panicked. this is a bug. [INFO] [stderr] [INFO] [stderr] note: using internal features is not supported and expected to cause internal compiler errors when used incorrectly [INFO] [stderr] [INFO] [stderr] note: rustc 1.91.0 (f8297e351 2025-10-28) running on x86_64-unknown-linux-gnu [INFO] [stderr] [INFO] [stderr] note: compiler flags: --crate-type lib -C embed-bitcode=no -C debuginfo=2 [INFO] [stderr] [INFO] [stderr] note: some of the compiler flags provided by cargo are hidden [INFO] [stderr] [INFO] [stderr] query stack during panic: [INFO] [stderr] #0 [check_well_formed] checking that `Same` is well-formed [INFO] [stderr] #1 [check_type_wf] checking that types are well-formed [INFO] [stderr] #2 [analysis] running analysis passes on this crate [INFO] [stderr] end of query stack [INFO] [stderr] [INFO] [stdout] Some errors have detailed explanations: E0554, E0635, E0658. [INFO] [stdout] [INFO] [stderr] thread 'rustc' (35) panicked at /rustc-dev/f8297e351a40c1439a467bbbb6879088047f50b3/compiler/rustc_type_ir/src/binder.rs:776:9: [INFO] [stdout] For more information about an error, try `rustc --explain E0554`. [INFO] [stdout] [INFO] [stderr] type parameter `T/#1` (T/#1/1) out of range when instantiating, args=[?2t] [INFO] [stderr] stack backtrace: [INFO] [stderr] 0: 0x71f57be50a23 - ::fmt::h4e0a3aeea0f9c085 [INFO] [stderr] 1: 0x71f57c601bd8 - core::fmt::write::hecf68a131630c74d [INFO] [stderr] 2: 0x71f57dcb57af - std::io::Write::write_fmt::h93c9a261259c931a [INFO] [stderr] 3: 0x71f57be15ee2 - std::sys::backtrace::BacktraceLock::print::h75160192768e5621 [INFO] [stderr] 4: 0x71f57be1be39 - std::panicking::default_hook::{{closure}}::h14d82797cfb1ddcb [INFO] [stderr] 5: 0x71f57be1b963 - std::panicking::default_hook::h63f9bf8161c5d325 [INFO] [stderr] 6: 0x71f57ae024e7 - std[752e03a6421f8218]::panicking::update_hook::>::{closure#0} [INFO] [stderr] 7: 0x71f57be1c25f - std::panicking::panic_with_hook::h3173740e06bd0752 [INFO] [stderr] 8: 0x71f57be1c01a - std::panicking::panic_handler::{{closure}}::hbac492c61eb56a87 [INFO] [stderr] 9: 0x71f57be16029 - std::sys::backtrace::__rust_end_short_backtrace::haa3eac3df9535320 [INFO] [stderr] 10: 0x71f57bdf698d - __rustc[de0091b922c53d7e]::rust_begin_unwind [INFO] [stderr] 11: 0x71f5784e7940 - core::panicking::panic_fmt::h5138da2ef87be35b [INFO] [stderr] 12: 0x71f57b41b859 - >::type_param_out_of_range [INFO] [stderr] 13: 0x71f57c6db515 - as rustc_type_ir[bbc5d72d4c267751]::fold::TypeFolder>::fold_ty [INFO] [stderr] 14: 0x71f57c6d6d4e - <&rustc_middle[d4b0c03c541beb2b]::ty::list::RawList<(), rustc_middle[d4b0c03c541beb2b]::ty::generic_args::GenericArg> as rustc_type_ir[bbc5d72d4c267751]::fold::TypeFoldable>::fold_with::> [INFO] [stderr] 15: 0x71f57e4067bd - as rustc_type_ir[bbc5d72d4c267751]::fold::TypeFolder>::fold_const.cold [INFO] [stderr] 16: 0x71f57cafadc1 - rustc_trait_selection[d6833817165672cc]::traits::project::confirm_candidate [INFO] [stderr] 17: 0x71f57cb0581f - rustc_trait_selection[d6833817165672cc]::traits::project::opt_normalize_projection_term [INFO] [stderr] 18: 0x71f57cb01725 - ::commit_if_ok:: [INFO] [stderr] 19: 0x71f57c60ce40 - ::evaluate_predicate_recursively [INFO] [stderr] 20: 0x71f57c754415 - ::candidate_from_obligation::{closure#0}::{closure#0} [INFO] [stderr] 21: 0x71f57c6b7c46 - ::poly_select::{closure#0} [INFO] [stderr] 22: 0x71f57ce6168d - ::process_obligation [INFO] [stderr] 23: 0x71f57c604dc9 - >::process_obligations:: [INFO] [stderr] 24: 0x71f57ccc4faa - as rustc_infer[d00850cb7b066a06]::traits::engine::TraitEngine>::select_all_or_error [INFO] [stderr] 25: 0x71f57d9eed7e - rustc_hir_analysis[89ecafbf117ed272]::check::wfcheck::check_trait [INFO] [stderr] 26: 0x71f57d1eadc4 - rustc_hir_analysis[89ecafbf117ed272]::check::check::check_item_type [INFO] [stderr] 27: 0x71f57d1e31db - rustc_hir_analysis[89ecafbf117ed272]::check::wfcheck::check_well_formed [INFO] [stderr] 28: 0x71f57d1e31a3 - rustc_query_impl[105cc161e39911be]::plumbing::__rust_begin_short_backtrace::> [INFO] [stderr] 29: 0x71f57d1e29e3 - rustc_query_system[eecf37c567c7c9f0]::query::plumbing::try_execute_query::, rustc_query_system[eecf37c567c7c9f0]::dep_graph::graph::DepNodeIndex>, false, false, false>, rustc_query_impl[105cc161e39911be]::plumbing::QueryCtxt, false> [INFO] [stderr] 30: 0x71f57d1e2502 - rustc_query_impl[105cc161e39911be]::query_impl::check_well_formed::get_query_non_incr::__rust_end_short_backtrace [INFO] [stderr] 31: 0x71f57d1dfacd - rustc_hir_analysis[89ecafbf117ed272]::check::wfcheck::check_type_wf [INFO] [stderr] 32: 0x71f57d1df9d5 - rustc_query_impl[105cc161e39911be]::plumbing::__rust_begin_short_backtrace::> [INFO] [stderr] 33: 0x71f57d7301d4 - rustc_query_system[eecf37c567c7c9f0]::query::plumbing::try_execute_query::>, false, false, false>, rustc_query_impl[105cc161e39911be]::plumbing::QueryCtxt, false> [INFO] [stderr] 34: 0x71f57d72ffb6 - rustc_query_impl[105cc161e39911be]::query_impl::check_type_wf::get_query_non_incr::__rust_end_short_backtrace [INFO] [stderr] 35: 0x71f57cc8d6ba - rustc_hir_analysis[89ecafbf117ed272]::check_crate [INFO] [stderr] 36: 0x71f57c82467e - rustc_interface[356b87dbb86a0c69]::passes::analysis [INFO] [stderr] 37: 0x71f57c82434b - rustc_query_impl[105cc161e39911be]::plumbing::__rust_begin_short_backtrace::> [INFO] [stderr] 38: 0x71f57d736960 - rustc_query_system[eecf37c567c7c9f0]::query::plumbing::try_execute_query::>, false, false, false>, rustc_query_impl[105cc161e39911be]::plumbing::QueryCtxt, false> [INFO] [stderr] 39: 0x71f57d7365b6 - rustc_query_impl[105cc161e39911be]::query_impl::analysis::get_query_non_incr::__rust_end_short_backtrace [INFO] [stderr] 40: 0x71f57d8bea24 - rustc_interface[356b87dbb86a0c69]::passes::create_and_enter_global_ctxt::, rustc_driver_impl[7060c14ee153e4be]::run_compiler::{closure#0}::{closure#2}>::{closure#2}::{closure#0} [INFO] [stderr] 41: 0x71f57d8ae6be - rustc_interface[356b87dbb86a0c69]::interface::run_compiler::<(), rustc_driver_impl[7060c14ee153e4be]::run_compiler::{closure#0}>::{closure#1} [INFO] [stderr] 42: 0x71f57d7de7b8 - std[752e03a6421f8218]::sys::backtrace::__rust_begin_short_backtrace::::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()> [INFO] [stderr] 43: 0x71f57d7de49c - <::spawn_unchecked_::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>::{closure#1} as core[23fa5c620bd8b707]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0} [INFO] [stderr] 44: 0x71f57d7e4a6f - std::sys::thread::unix::Thread::new::thread_start::h38da0f633f090ce2 [INFO] [stderr] 45: 0x71f57708aaa4 - [INFO] [stderr] 46: 0x71f577117a64 - clone [INFO] [stderr] 47: 0x0 - [INFO] [stderr] [INFO] [stderr] error: the compiler unexpectedly panicked. this is a bug. [INFO] [stderr] [INFO] [stderr] note: using internal features is not supported and expected to cause internal compiler errors when used incorrectly [INFO] [stderr] [INFO] [stderr] note: rustc 1.91.0 (f8297e351 2025-10-28) running on x86_64-unknown-linux-gnu [INFO] [stderr] [INFO] [stderr] note: compiler flags: --crate-type lib -C embed-bitcode=no -C debuginfo=2 [INFO] [stderr] [INFO] [stderr] note: some of the compiler flags provided by cargo are hidden [INFO] [stderr] [INFO] [stderr] query stack during panic: [INFO] [stderr] #0 [check_well_formed] checking that `private::Same` is well-formed [INFO] [stderr] #1 [check_type_wf] checking that types are well-formed [INFO] [stderr] #2 [analysis] running analysis passes on this crate [INFO] [stderr] end of query stack [INFO] [stderr] error: could not compile `option_trait` (lib) due to 18 previous errors; 2 warnings emitted [INFO] running `Command { std: "docker" "inspect" "e0648c7406bb581c336a072ee15382679ad01686173b32e7705aa15497a149c0", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e0648c7406bb581c336a072ee15382679ad01686173b32e7705aa15497a149c0", kill_on_drop: false }` [INFO] [stdout] e0648c7406bb581c336a072ee15382679ad01686173b32e7705aa15497a149c0