[INFO] fetching crate bittwiddler 0.0.2...
[INFO] testing bittwiddler-0.0.2 against beta-2025-09-21 for beta-1.91-2
[INFO] extracting crate bittwiddler 0.0.2 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate bittwiddler 0.0.2
[INFO] finished tweaking crates.io crate bittwiddler 0.0.2
[INFO] tweaked toml for crates.io crate bittwiddler 0.0.2 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate bittwiddler 0.0.2 on toolchain beta-2025-09-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 4 packages to latest compatible versions
[INFO] [stderr]       Adding quote v0.5.2 (available: v1.0.40)
[INFO] [stderr]       Adding syn v0.13.11 (available: v2.0.106)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f019b7f780c6450f92f52d5998a2fce2cb0f4ed5e2bce7b46bfeba92374b3ba8
[INFO] running `Command { std: "docker" "start" "-a" "f019b7f780c6450f92f52d5998a2fce2cb0f4ed5e2bce7b46bfeba92374b3ba8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f019b7f780c6450f92f52d5998a2fce2cb0f4ed5e2bce7b46bfeba92374b3ba8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f019b7f780c6450f92f52d5998a2fce2cb0f4ed5e2bce7b46bfeba92374b3ba8", kill_on_drop: false }`
[INFO] [stdout] f019b7f780c6450f92f52d5998a2fce2cb0f4ed5e2bce7b46bfeba92374b3ba8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 88d3423c963a0af321d749277de981ed071edb1d7fd5f28ad8f9106ab9fefe1e
[INFO] running `Command { std: "docker" "start" "-a" "88d3423c963a0af321d749277de981ed071edb1d7fd5f28ad8f9106ab9fefe1e", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling proc-macro2 v0.3.8
[INFO] [stderr]    Compiling quote v0.5.2
[INFO] [stderr]    Compiling syn v0.13.11
[INFO] [stderr]    Compiling bittwiddler v0.0.2 (/opt/rustwide/workdir)
[INFO] [stderr] 
[INFO] [stderr] thread 'rustc' (81) panicked at compiler/rustc_errors/src/lib.rs:385:17:
[INFO] [stderr] assertion `left == right` failed: all spans must be disjoint
[INFO] [stderr]   left: Some([SubstitutionPart { span: /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/quote-0.5.2/src/lib.rs:381:29: 434:9 (#1585), snippet: "while let Some(" }, SubstitutionPart { span: /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/quote-0.5.2/src/lib.rs:381:29: 381:35 (#264), snippet: ") = " }])
[INFO] [stderr]  right: None
[INFO] [stderr] stack backtrace:
[INFO] [stderr]    0:     0x791d04849ef3 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h67edf0e4d33c343c
[INFO] [stderr]    1:     0x791d05001b58 - core::fmt::write::hcf0c66b48a8fa606
[INFO] [stderr]    2:     0x791d0662446f - std::io::Write::write_fmt::h051fe4a9e4fdbf48
[INFO] [stderr]    3:     0x791d0480fd82 - std::sys::backtrace::BacktraceLock::print::h07e5435aa717b414
[INFO] [stderr]    4:     0x791d04815cb9 - std::panicking::default_hook::{{closure}}::h91001850288db5f7
[INFO] [stderr]    5:     0x791d048157e3 - std::panicking::default_hook::h2346dbb704ef5512
[INFO] [stderr]    6:     0x791d037fcbc7 - std[964350b2783e405f]::panicking::update_hook::<alloc[eabebbc6c73aef0c]::boxed::Box<rustc_driver_impl[c00a9a62f1a7ca6a]::install_ice_hook::{closure#1}>>::{closure#0}
[INFO] [stderr]    7:     0x791d048160df - std::panicking::panic_with_hook::hd2b063a6090d23a4
[INFO] [stderr]    8:     0x791d04815e9a - std::panicking::panic_handler::{{closure}}::he666d95f139a333e
[INFO] [stderr]    9:     0x791d0480feb9 - std::sys::backtrace::__rust_end_short_backtrace::h631ad224854ebee5
[INFO] [stderr]   10:     0x791d047f063d - __rustc[1d67440d6e82e4f]::rust_begin_unwind
[INFO] [stderr]   11:     0x791d00ee6d70 - core::panicking::panic_fmt::h420ddb7fd73daf53
[INFO] [stderr]   12:     0x791d031ebaa3 - core::panicking::assert_failed_inner::h448e1d534f4c3d4b
[INFO] [stderr]   13:     0x791d0382c708 - core[dc8158927f5e781c]::panicking::assert_failed::<core[dc8158927f5e781c]::option::Option<&[rustc_errors[10d5b069272de5dd]::SubstitutionPart; 2usize]>, core[dc8158927f5e781c]::option::Option<&[rustc_errors[10d5b069272de5dd]::SubstitutionPart; 2usize]>>
[INFO] [stderr]   14:     0x791d06504871 - <core[dc8158927f5e781c]::iter::adapters::filter_map::FilterMap<core[dc8158927f5e781c]::iter::adapters::cloned::Cloned<core[dc8158927f5e781c]::iter::adapters::filter::Filter<core[dc8158927f5e781c]::slice::iter::Iter<rustc_errors[10d5b069272de5dd]::Substitution>, <rustc_errors[10d5b069272de5dd]::CodeSuggestion>::splice_lines::{closure#0}>>, <rustc_errors[10d5b069272de5dd]::CodeSuggestion>::splice_lines::{closure#1}> as core[dc8158927f5e781c]::iter::traits::iterator::Iterator>::next
[INFO] [stderr]   15:     0x791d06500649 - <rustc_errors[10d5b069272de5dd]::emitter::HumanEmitter>::emit_suggestion_default
[INFO] [stderr]   16:     0x791d0655ae3d - <rustc_errors[10d5b069272de5dd]::emitter::HumanEmitter as rustc_errors[10d5b069272de5dd]::emitter::Emitter>::emit_diagnostic
[INFO] [stderr]   17:     0x791d06557965 - <rustc_errors[10d5b069272de5dd]::json::Diagnostic>::from_errors_diagnostic
[INFO] [stderr]   18:     0x791d06557070 - <rustc_errors[10d5b069272de5dd]::json::JsonEmitter as rustc_errors[10d5b069272de5dd]::emitter::Emitter>::emit_diagnostic
[INFO] [stderr]   19:     0x791d06562b64 - <rustc_errors[10d5b069272de5dd]::DiagCtxtInner>::emit_diagnostic::{closure#3}
[INFO] [stderr]   20:     0x791d06560504 - rustc_interface[89ceac0529af2cd8]::callbacks::track_diagnostic::<core[dc8158927f5e781c]::option::Option<rustc_span[68ddb5798b8c3a2e]::ErrorGuaranteed>>
[INFO] [stderr]   21:     0x791d0655f50a - <rustc_errors[10d5b069272de5dd]::DiagCtxtInner>::emit_diagnostic
[INFO] [stderr]   22:     0x791d0655f3bb - <rustc_errors[10d5b069272de5dd]::DiagCtxtHandle>::emit_diagnostic
[INFO] [stderr]   23:     0x791d0655f255 - <() as rustc_errors[10d5b069272de5dd]::diagnostic::EmissionGuarantee>::emit_producing_guarantee
[INFO] [stderr]   24:     0x791d0578e870 - rustc_middle[94f43328057ea44f]::lint::lint_level::lint_level_impl
[INFO] [stderr]   25:     0x791d03cabb94 - rustc_middle[94f43328057ea44f]::lint::lint_level::<<rustc_lint[b5b1d23594219458]::context::LateContext as rustc_lint[b5b1d23594219458]::context::LintContext>::emit_span_lint<rustc_span[68ddb5798b8c3a2e]::span_encoding::Span, rustc_lint[b5b1d23594219458]::lints::ForLoopsOverFalliblesDiag>::{closure#0}>
[INFO] [stderr]   26:     0x791d05c7e3e1 - <rustc_lint[b5b1d23594219458]::BuiltinCombinedModuleLateLintPass as rustc_lint[b5b1d23594219458]::passes::LateLintPass>::check_expr
[INFO] [stderr]   27:     0x791d05793bb0 - <rustc_lint[b5b1d23594219458]::late::LateContextAndPass<rustc_lint[b5b1d23594219458]::BuiltinCombinedModuleLateLintPass> as rustc_hir[e2cfd44feccb77e2]::intravisit::Visitor>::visit_expr
[INFO] [stderr]   28:     0x791d05792cf6 - <rustc_lint[b5b1d23594219458]::late::LateContextAndPass<rustc_lint[b5b1d23594219458]::BuiltinCombinedModuleLateLintPass> as rustc_hir[e2cfd44feccb77e2]::intravisit::Visitor>::visit_block
[INFO] [stderr]   29:     0x791d05794062 - <rustc_lint[b5b1d23594219458]::late::LateContextAndPass<rustc_lint[b5b1d23594219458]::BuiltinCombinedModuleLateLintPass> as rustc_hir[e2cfd44feccb77e2]::intravisit::Visitor>::visit_expr
[INFO] [stderr]   30:     0x791d0579408c - <rustc_lint[b5b1d23594219458]::late::LateContextAndPass<rustc_lint[b5b1d23594219458]::BuiltinCombinedModuleLateLintPass> as rustc_hir[e2cfd44feccb77e2]::intravisit::Visitor>::visit_expr
[INFO] [stderr]   31:     0x791d05794037 - <rustc_lint[b5b1d23594219458]::late::LateContextAndPass<rustc_lint[b5b1d23594219458]::BuiltinCombinedModuleLateLintPass> as rustc_hir[e2cfd44feccb77e2]::intravisit::Visitor>::visit_expr
[INFO] [stderr]   32:     0x791d0579304d - <rustc_lint[b5b1d23594219458]::late::LateContextAndPass<rustc_lint[b5b1d23594219458]::BuiltinCombinedModuleLateLintPass> as rustc_hir[e2cfd44feccb77e2]::intravisit::Visitor>::visit_block
[INFO] [stderr]   33:     0x791d05794062 - <rustc_lint[b5b1d23594219458]::late::LateContextAndPass<rustc_lint[b5b1d23594219458]::BuiltinCombinedModuleLateLintPass> as rustc_hir[e2cfd44feccb77e2]::intravisit::Visitor>::visit_expr
[INFO] [stderr]   34:     0x791d057940a9 - <rustc_lint[b5b1d23594219458]::late::LateContextAndPass<rustc_lint[b5b1d23594219458]::BuiltinCombinedModuleLateLintPass> as rustc_hir[e2cfd44feccb77e2]::intravisit::Visitor>::visit_expr
[INFO] [stderr]   35:     0x791d05792cf6 - <rustc_lint[b5b1d23594219458]::late::LateContextAndPass<rustc_lint[b5b1d23594219458]::BuiltinCombinedModuleLateLintPass> as rustc_hir[e2cfd44feccb77e2]::intravisit::Visitor>::visit_block
[INFO] [stderr]   36:     0x791d05794062 - <rustc_lint[b5b1d23594219458]::late::LateContextAndPass<rustc_lint[b5b1d23594219458]::BuiltinCombinedModuleLateLintPass> as rustc_hir[e2cfd44feccb77e2]::intravisit::Visitor>::visit_expr
[INFO] [stderr]   37:     0x791d0579408c - <rustc_lint[b5b1d23594219458]::late::LateContextAndPass<rustc_lint[b5b1d23594219458]::BuiltinCombinedModuleLateLintPass> as rustc_hir[e2cfd44feccb77e2]::intravisit::Visitor>::visit_expr
[INFO] [stderr]   38:     0x791d05794037 - <rustc_lint[b5b1d23594219458]::late::LateContextAndPass<rustc_lint[b5b1d23594219458]::BuiltinCombinedModuleLateLintPass> as rustc_hir[e2cfd44feccb77e2]::intravisit::Visitor>::visit_expr
[INFO] [stderr]   39:     0x791d0579304d - <rustc_lint[b5b1d23594219458]::late::LateContextAndPass<rustc_lint[b5b1d23594219458]::BuiltinCombinedModuleLateLintPass> as rustc_hir[e2cfd44feccb77e2]::intravisit::Visitor>::visit_block
[INFO] [stderr]   40:     0x791d05794062 - <rustc_lint[b5b1d23594219458]::late::LateContextAndPass<rustc_lint[b5b1d23594219458]::BuiltinCombinedModuleLateLintPass> as rustc_hir[e2cfd44feccb77e2]::intravisit::Visitor>::visit_expr
[INFO] [stderr]   41:     0x791d057940a9 - <rustc_lint[b5b1d23594219458]::late::LateContextAndPass<rustc_lint[b5b1d23594219458]::BuiltinCombinedModuleLateLintPass> as rustc_hir[e2cfd44feccb77e2]::intravisit::Visitor>::visit_expr
[INFO] [stderr]   42:     0x791d05792cf6 - <rustc_lint[b5b1d23594219458]::late::LateContextAndPass<rustc_lint[b5b1d23594219458]::BuiltinCombinedModuleLateLintPass> as rustc_hir[e2cfd44feccb77e2]::intravisit::Visitor>::visit_block
[INFO] [stderr]   43:     0x791d05794062 - <rustc_lint[b5b1d23594219458]::late::LateContextAndPass<rustc_lint[b5b1d23594219458]::BuiltinCombinedModuleLateLintPass> as rustc_hir[e2cfd44feccb77e2]::intravisit::Visitor>::visit_expr
[INFO] [stderr]   44:     0x791d0579408c - <rustc_lint[b5b1d23594219458]::late::LateContextAndPass<rustc_lint[b5b1d23594219458]::BuiltinCombinedModuleLateLintPass> as rustc_hir[e2cfd44feccb77e2]::intravisit::Visitor>::visit_expr
[INFO] [stderr]   45:     0x791d05794037 - <rustc_lint[b5b1d23594219458]::late::LateContextAndPass<rustc_lint[b5b1d23594219458]::BuiltinCombinedModuleLateLintPass> as rustc_hir[e2cfd44feccb77e2]::intravisit::Visitor>::visit_expr
[INFO] [stderr]   46:     0x791d0579304d - <rustc_lint[b5b1d23594219458]::late::LateContextAndPass<rustc_lint[b5b1d23594219458]::BuiltinCombinedModuleLateLintPass> as rustc_hir[e2cfd44feccb77e2]::intravisit::Visitor>::visit_block
[INFO] [stderr]   47:     0x791d05794062 - <rustc_lint[b5b1d23594219458]::late::LateContextAndPass<rustc_lint[b5b1d23594219458]::BuiltinCombinedModuleLateLintPass> as rustc_hir[e2cfd44feccb77e2]::intravisit::Visitor>::visit_expr
[INFO] [stderr]   48:     0x791d057940a9 - <rustc_lint[b5b1d23594219458]::late::LateContextAndPass<rustc_lint[b5b1d23594219458]::BuiltinCombinedModuleLateLintPass> as rustc_hir[e2cfd44feccb77e2]::intravisit::Visitor>::visit_expr
[INFO] [stderr]   49:     0x791d05792cf6 - <rustc_lint[b5b1d23594219458]::late::LateContextAndPass<rustc_lint[b5b1d23594219458]::BuiltinCombinedModuleLateLintPass> as rustc_hir[e2cfd44feccb77e2]::intravisit::Visitor>::visit_block
[INFO] [stderr]   50:     0x791d05794062 - <rustc_lint[b5b1d23594219458]::late::LateContextAndPass<rustc_lint[b5b1d23594219458]::BuiltinCombinedModuleLateLintPass> as rustc_hir[e2cfd44feccb77e2]::intravisit::Visitor>::visit_expr
[INFO] [stderr]   51:     0x791d05792c86 - <rustc_lint[b5b1d23594219458]::late::LateContextAndPass<rustc_lint[b5b1d23594219458]::BuiltinCombinedModuleLateLintPass> as rustc_hir[e2cfd44feccb77e2]::intravisit::Visitor>::visit_block
[INFO] [stderr]   52:     0x791d05794062 - <rustc_lint[b5b1d23594219458]::late::LateContextAndPass<rustc_lint[b5b1d23594219458]::BuiltinCombinedModuleLateLintPass> as rustc_hir[e2cfd44feccb77e2]::intravisit::Visitor>::visit_expr
[INFO] [stderr]   53:     0x791d057943b5 - <rustc_lint[b5b1d23594219458]::late::LateContextAndPass<rustc_lint[b5b1d23594219458]::BuiltinCombinedModuleLateLintPass> as rustc_hir[e2cfd44feccb77e2]::intravisit::Visitor>::visit_expr
[INFO] [stderr]   54:     0x791d0579304d - <rustc_lint[b5b1d23594219458]::late::LateContextAndPass<rustc_lint[b5b1d23594219458]::BuiltinCombinedModuleLateLintPass> as rustc_hir[e2cfd44feccb77e2]::intravisit::Visitor>::visit_block
[INFO] [stderr]   55:     0x791d05794062 - <rustc_lint[b5b1d23594219458]::late::LateContextAndPass<rustc_lint[b5b1d23594219458]::BuiltinCombinedModuleLateLintPass> as rustc_hir[e2cfd44feccb77e2]::intravisit::Visitor>::visit_expr
[INFO] [stderr]   56:     0x791d057943b5 - <rustc_lint[b5b1d23594219458]::late::LateContextAndPass<rustc_lint[b5b1d23594219458]::BuiltinCombinedModuleLateLintPass> as rustc_hir[e2cfd44feccb77e2]::intravisit::Visitor>::visit_expr
[INFO] [stderr]   57:     0x791d05792c86 - <rustc_lint[b5b1d23594219458]::late::LateContextAndPass<rustc_lint[b5b1d23594219458]::BuiltinCombinedModuleLateLintPass> as rustc_hir[e2cfd44feccb77e2]::intravisit::Visitor>::visit_block
[INFO] [stderr]   58:     0x791d057a26b5 - <rustc_lint[b5b1d23594219458]::late::LateContextAndPass<rustc_lint[b5b1d23594219458]::BuiltinCombinedModuleLateLintPass> as rustc_hir[e2cfd44feccb77e2]::intravisit::Visitor>::visit_nested_body
[INFO] [stderr]   59:     0x791d0579ce2c - <rustc_lint[b5b1d23594219458]::late::LateContextAndPass<rustc_lint[b5b1d23594219458]::BuiltinCombinedModuleLateLintPass> as rustc_hir[e2cfd44feccb77e2]::intravisit::Visitor>::visit_nested_item
[INFO] [stderr]   60:     0x791d0579a4c1 - rustc_lint[b5b1d23594219458]::lint_mod
[INFO] [stderr]   61:     0x791d0579a05b - rustc_query_impl[93e3285720b12608]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[93e3285720b12608]::query_impl::lint_mod::dynamic_query::{closure#2}::{closure#0}, rustc_middle[94f43328057ea44f]::query::erase::Erased<[u8; 0usize]>>
[INFO] [stderr]   62:     0x791d06020a54 - rustc_query_system[59265a8d1af4d44c]::query::plumbing::try_execute_query::<rustc_query_impl[93e3285720b12608]::DynamicConfig<rustc_query_system[59265a8d1af4d44c]::query::caches::DefaultCache<rustc_span[68ddb5798b8c3a2e]::def_id::LocalModDefId, rustc_middle[94f43328057ea44f]::query::erase::Erased<[u8; 0usize]>>, false, false, false>, rustc_query_impl[93e3285720b12608]::plumbing::QueryCtxt, false>
[INFO] [stderr]   63:     0x791d060207db - rustc_query_impl[93e3285720b12608]::query_impl::lint_mod::get_query_non_incr::__rust_end_short_backtrace
[INFO] [stderr]   64:     0x791d0601fa4f - rustc_lint[b5b1d23594219458]::late::check_crate::{closure#1}
[INFO] [stderr]   65:     0x791d0601f5ba - rustc_lint[b5b1d23594219458]::late::check_crate
[INFO] [stderr]   66:     0x791d052df784 - rustc_interface[89ceac0529af2cd8]::passes::analysis
[INFO] [stderr]   67:     0x791d052def0b - rustc_query_impl[93e3285720b12608]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[93e3285720b12608]::query_impl::analysis::dynamic_query::{closure#2}::{closure#0}, rustc_middle[94f43328057ea44f]::query::erase::Erased<[u8; 0usize]>>
[INFO] [stderr]   68:     0x791d060299a6 - rustc_query_system[59265a8d1af4d44c]::query::plumbing::try_execute_query::<rustc_query_impl[93e3285720b12608]::DynamicConfig<rustc_query_system[59265a8d1af4d44c]::query::caches::SingleCache<rustc_middle[94f43328057ea44f]::query::erase::Erased<[u8; 0usize]>>, false, false, false>, rustc_query_impl[93e3285720b12608]::plumbing::QueryCtxt, false>
[INFO] [stderr]   69:     0x791d060295fc - rustc_query_impl[93e3285720b12608]::query_impl::analysis::get_query_non_incr::__rust_end_short_backtrace
[INFO] [stderr]   70:     0x791d063aec24 - rustc_interface[89ceac0529af2cd8]::passes::create_and_enter_global_ctxt::<core[dc8158927f5e781c]::option::Option<rustc_interface[89ceac0529af2cd8]::queries::Linker>, rustc_driver_impl[c00a9a62f1a7ca6a]::run_compiler::{closure#0}::{closure#2}>::{closure#2}::{closure#0}
[INFO] [stderr]   71:     0x791d0631cafe - rustc_interface[89ceac0529af2cd8]::interface::run_compiler::<(), rustc_driver_impl[c00a9a62f1a7ca6a]::run_compiler::{closure#0}>::{closure#1}
[INFO] [stderr]   72:     0x791d0622fd78 - std[964350b2783e405f]::sys::backtrace::__rust_begin_short_backtrace::<rustc_interface[89ceac0529af2cd8]::util::run_in_thread_with_globals<rustc_interface[89ceac0529af2cd8]::util::run_in_thread_pool_with_globals<rustc_interface[89ceac0529af2cd8]::interface::run_compiler<(), rustc_driver_impl[c00a9a62f1a7ca6a]::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>
[INFO] [stderr]   73:     0x791d0622fa48 - <<std[964350b2783e405f]::thread::Builder>::spawn_unchecked_<rustc_interface[89ceac0529af2cd8]::util::run_in_thread_with_globals<rustc_interface[89ceac0529af2cd8]::util::run_in_thread_pool_with_globals<rustc_interface[89ceac0529af2cd8]::interface::run_compiler<(), rustc_driver_impl[c00a9a62f1a7ca6a]::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>::{closure#1} as core[dc8158927f5e781c]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stderr]   74:     0x791d0623548d - std::sys::thread::unix::Thread::new::thread_start::hf277835320aa8e5a
[INFO] [stderr]   75:     0x791cffa8aaa4 - <unknown>
[INFO] [stderr]   76:     0x791cffb17a34 - clone
[INFO] [stderr]   77:                0x0 - <unknown>
[INFO] [stderr] 
[INFO] [stderr] error: the compiler unexpectedly panicked. this is a bug.
[INFO] [stderr] 
[INFO] [stderr] 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
[INFO] [stderr] 
[INFO] [stderr] note: rustc 1.91.0-beta.3 (bb624dcb4 2025-09-20) running on x86_64-unknown-linux-gnu
[INFO] [stderr] 
[INFO] [stderr] note: compiler flags: --crate-type proc-macro -C prefer-dynamic -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 [lint_mod] linting top-level module
[INFO] [stderr] #1 [analysis] running analysis passes on this crate
[INFO] [stderr] end of query stack
[INFO] [stderr] error: could not compile `bittwiddler` (lib)
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/beta-2025-09-21-x86_64-unknown-linux-gnu/bin/rustc --crate-name bittwiddler --edition=2018 src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type proc-macro --emit=dep-info,link -C prefer-dynamic -C embed-bitcode=no -C debuginfo=2 --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values())' -C metadata=69476b2d6f6f176c -C extra-filename=-9c8dbf2df169783b --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern quote=/opt/rustwide/target/debug/deps/libquote-5727e235ac386f9e.rlib --extern syn=/opt/rustwide/target/debug/deps/libsyn-2a71fe2ec6feacea.rlib --extern proc_macro --cap-lints=warn` (exit status: 101)
[INFO] running `Command { std: "docker" "inspect" "88d3423c963a0af321d749277de981ed071edb1d7fd5f28ad8f9106ab9fefe1e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "88d3423c963a0af321d749277de981ed071edb1d7fd5f28ad8f9106ab9fefe1e", kill_on_drop: false }`
[INFO] [stdout] 88d3423c963a0af321d749277de981ed071edb1d7fd5f28ad8f9106ab9fefe1e