[INFO] fetching crate serialization_minecraft 0.2.13...
[INFO] testing serialization_minecraft-0.2.13 against try#c2e32f1c9652b13ed99608599c1e855462f421f3 for pr-146098-8
[INFO] extracting crate serialization_minecraft 0.2.13 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate serialization_minecraft 0.2.13
[INFO] finished tweaking crates.io crate serialization_minecraft 0.2.13
[INFO] tweaked toml for crates.io crate serialization_minecraft 0.2.13 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate serialization_minecraft 0.2.13 on toolchain c2e32f1c9652b13ed99608599c1e855462f421f3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate serialization_minecraft 0.2.13 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" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d805c0c02062093466e447710aa9ea9e911cc07bd0fba8586a7d797cc37b128d
[INFO] running `Command { std: "docker" "start" "-a" "d805c0c02062093466e447710aa9ea9e911cc07bd0fba8586a7d797cc37b128d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d805c0c02062093466e447710aa9ea9e911cc07bd0fba8586a7d797cc37b128d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d805c0c02062093466e447710aa9ea9e911cc07bd0fba8586a7d797cc37b128d", kill_on_drop: false }`
[INFO] [stdout] d805c0c02062093466e447710aa9ea9e911cc07bd0fba8586a7d797cc37b128d
[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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9b6ff2d8fca117b69f7e7e55b30fd8faf06c7bab0ab0704aab8133d97388f4d3
[INFO] running `Command { std: "docker" "start" "-a" "9b6ff2d8fca117b69f7e7e55b30fd8faf06c7bab0ab0704aab8133d97388f4d3", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.92
[INFO] [stderr]    Compiling unicode-ident v1.0.14
[INFO] [stderr]    Compiling serde v1.0.216
[INFO] [stderr]    Compiling autocfg v1.4.0
[INFO] [stderr]    Compiling seq-macro v0.3.5
[INFO] [stderr]    Compiling uuid v1.11.0
[INFO] [stderr]    Compiling convert_case v0.6.0
[INFO] [stderr]    Compiling constvec v0.1.14
[INFO] [stdout] error[E0658]: use of unstable const library feature `const_ops`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/constvec-0.1.14/src/lib.rs:232:63
[INFO] [stdout]     |
[INFO] [stdout] 232 | impl<T: Sized + Copy, const N1: usize, const N2: usize> const Add<&ConstVec<[T; N2]>>
[INFO] [stdout]     |                                                               ^^^^^^^^^^^^^^^^^^^^^^^ trait is not stable as const yet
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #143802 <https://github.com/rust-lang/rust/issues/143802> for more information
[INFO] [stdout]     = help: add `#![feature(const_ops)]` to the crate attributes to enable
[INFO] [stdout]     = note: this compiler was built on 2025-11-07; consider upgrading it if it is out of date
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: internal compiler error: compiler/rustc_const_eval/src/check_consts/qualifs.rs:356:13: expected ConstKind::Param or ConstKind::Value here, found UnevaluatedConst { def: DefId(0:111 ~ constvec[7eb1]::{impl#8}::add::{constant#2}), args: ['{erased}, '{erased}, T/#2, N1/#3, N2/#4] }
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stderr] thread 'rustc' (48) panicked at compiler/rustc_const_eval/src/check_consts/qualifs.rs:356:13:
[INFO] [stderr] Box<dyn Any>
[INFO] [stderr] stack backtrace:
[INFO] [stderr]    0:     0x7f266b85dff3 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h8a1ac49fcd7ee8ce
[INFO] [stderr]    1:     0x7f266c001afc - core::fmt::write::hbdcc0ec4f1bab1db
[INFO] [stderr]    2:     0x7f266b812c73 - std::io::Write::write_fmt::hec441b8c6eca32b9
[INFO] [stderr]    3:     0x7f266b824172 - std::sys::backtrace::BacktraceLock::print::h052febbd86f7bf07
[INFO] [stderr]    4:     0x7f266b82a1c9 - std::panicking::default_hook::{{closure}}::h66aeee20dd470abb
[INFO] [stderr]    5:     0x7f266b829cf3 - std::panicking::default_hook::h9d66b9642014ce48
[INFO] [stderr]    6:     0x7f266a81efb1 - std[7852ca75000e74fc]::panicking::update_hook::<alloc[b801fe7dcb3666a3]::boxed::Box<rustc_driver_impl[bce797706e17a736]::install_ice_hook::{closure#1}>>::{closure#0}
[INFO] [stderr]    7:     0x7f266b82a5ef - std::panicking::panic_with_hook::h6d5921a1a1fa5a8e
[INFO] [stderr]    8:     0x7f266a85b491 - std[7852ca75000e74fc]::panicking::begin_panic::<rustc_errors[e0ae961849da46aa]::ExplicitBug>::{closure#0}
[INFO] [stderr]    9:     0x7f266a84da66 - std[7852ca75000e74fc]::sys::backtrace::__rust_end_short_backtrace::<std[7852ca75000e74fc]::panicking::begin_panic<rustc_errors[e0ae961849da46aa]::ExplicitBug>::{closure#0}, !>
[INFO] [stderr]   10:     0x7f266a84d737 - std[7852ca75000e74fc]::panicking::begin_panic::<rustc_errors[e0ae961849da46aa]::ExplicitBug>
[INFO] [stderr]   11:     0x7f266a879b01 - <rustc_errors[e0ae961849da46aa]::diagnostic::BugAbort as rustc_errors[e0ae961849da46aa]::diagnostic::EmissionGuarantee>::emit_producing_guarantee
[INFO] [stderr]   12:     0x7f266ae00f7a - rustc_middle[7d63fbd2f8df8a1e]::util::bug::opt_span_bug_fmt::<rustc_span[a224b77f02460364]::span_encoding::Span>::{closure#0}
[INFO] [stderr]   13:     0x7f266ae0125a - rustc_middle[7d63fbd2f8df8a1e]::ty::context::tls::with_opt::<rustc_middle[7d63fbd2f8df8a1e]::util::bug::opt_span_bug_fmt<rustc_span[a224b77f02460364]::span_encoding::Span>::{closure#0}, !>::{closure#0}
[INFO] [stderr]   14:     0x7f266adf205b - rustc_middle[7d63fbd2f8df8a1e]::ty::context::tls::with_context_opt::<rustc_middle[7d63fbd2f8df8a1e]::ty::context::tls::with_opt<rustc_middle[7d63fbd2f8df8a1e]::util::bug::opt_span_bug_fmt<rustc_span[a224b77f02460364]::span_encoding::Span>::{closure#0}, !>::{closure#0}, !>
[INFO] [stderr]   15:     0x7f2668b77140 - rustc_middle[7d63fbd2f8df8a1e]::util::bug::bug_fmt
[INFO] [stderr]   16:     0x7f266de158bf - rustc_const_eval[c57e8a15719ceeb5]::check_consts::qualifs::in_operand::<rustc_const_eval[c57e8a15719ceeb5]::check_consts::qualifs::HasMutInterior, <rustc_const_eval[c57e8a15719ceeb5]::check_consts::resolver::TransferFunction<rustc_const_eval[c57e8a15719ceeb5]::check_consts::qualifs::HasMutInterior> as rustc_middle[7d63fbd2f8df8a1e]::mir::visit::Visitor>::visit_assign::{closure#0}>.cold
[INFO] [stderr]   17:     0x7f266cde9004 - <rustc_const_eval[c57e8a15719ceeb5]::check_consts::resolver::FlowSensitiveAnalysis<rustc_const_eval[c57e8a15719ceeb5]::check_consts::qualifs::HasMutInterior> as rustc_mir_dataflow[6ca8966b939f35c1]::framework::Analysis>::apply_primary_statement_effect
[INFO] [stderr]   18:     0x7f266ccf630f - <rustc_const_eval[c57e8a15719ceeb5]::check_consts::check::Qualifs>::has_mut_interior
[INFO] [stderr]   19:     0x7f266ccf55e1 - rustc_mir_transform[596e9ef59ca75e8d]::mir_const_qualif
[INFO] [stderr]   20:     0x7f266ccf5369 - rustc_query_impl[84d3eed17e5ab449]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[84d3eed17e5ab449]::query_impl::mir_const_qualif::dynamic_query::{closure#2}::{closure#0}, rustc_middle[7d63fbd2f8df8a1e]::query::erase::Erased<[u8; 4usize]>>
[INFO] [stderr]   21:     0x7f266ccf480b - rustc_query_system[c2287fd650159af7]::query::plumbing::try_execute_query::<rustc_query_impl[84d3eed17e5ab449]::DynamicConfig<rustc_query_system[c2287fd650159af7]::query::caches::DefIdCache<rustc_middle[7d63fbd2f8df8a1e]::query::erase::Erased<[u8; 4usize]>>, false, false, false>, rustc_query_impl[84d3eed17e5ab449]::plumbing::QueryCtxt, false>
[INFO] [stderr]   22:     0x7f266ccf454a - rustc_query_impl[84d3eed17e5ab449]::query_impl::mir_const_qualif::get_query_non_incr::__rust_end_short_backtrace
[INFO] [stderr]   23:     0x7f266951a79f - rustc_mir_transform[596e9ef59ca75e8d]::mir_promoted
[INFO] [stderr]   24:     0x7f266cb05b12 - rustc_query_impl[84d3eed17e5ab449]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[84d3eed17e5ab449]::query_impl::mir_promoted::dynamic_query::{closure#2}::{closure#0}, rustc_middle[7d63fbd2f8df8a1e]::query::erase::Erased<[u8; 16usize]>>
[INFO] [stderr]   25:     0x7f266cb05dd1 - rustc_query_system[c2287fd650159af7]::query::plumbing::try_execute_query::<rustc_query_impl[84d3eed17e5ab449]::DynamicConfig<rustc_data_structures[94650649e502e822]::vec_cache::VecCache<rustc_span[a224b77f02460364]::def_id::LocalDefId, rustc_middle[7d63fbd2f8df8a1e]::query::erase::Erased<[u8; 16usize]>, rustc_query_system[c2287fd650159af7]::dep_graph::graph::DepNodeIndex>, false, false, false>, rustc_query_impl[84d3eed17e5ab449]::plumbing::QueryCtxt, false>
[INFO] [stderr]   26:     0x7f266cb05958 - rustc_query_impl[84d3eed17e5ab449]::query_impl::mir_promoted::get_query_non_incr::__rust_end_short_backtrace
[INFO] [stderr]   27:     0x7f266d036b40 - rustc_borrowck[810cfea49b529574]::mir_borrowck
[INFO] [stderr]   28:     0x7f266d036a99 - rustc_query_impl[84d3eed17e5ab449]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[84d3eed17e5ab449]::query_impl::mir_borrowck::dynamic_query::{closure#2}::{closure#0}, rustc_middle[7d63fbd2f8df8a1e]::query::erase::Erased<[u8; 8usize]>>
[INFO] [stderr]   29:     0x7f266c32ba37 - rustc_query_system[c2287fd650159af7]::query::plumbing::try_execute_query::<rustc_query_impl[84d3eed17e5ab449]::DynamicConfig<rustc_data_structures[94650649e502e822]::vec_cache::VecCache<rustc_span[a224b77f02460364]::def_id::LocalDefId, rustc_middle[7d63fbd2f8df8a1e]::query::erase::Erased<[u8; 8usize]>, rustc_query_system[c2287fd650159af7]::dep_graph::graph::DepNodeIndex>, false, false, false>, rustc_query_impl[84d3eed17e5ab449]::plumbing::QueryCtxt, false>
[INFO] [stderr]   30:     0x7f266c3248cb - rustc_query_impl[84d3eed17e5ab449]::query_impl::mir_borrowck::get_query_non_incr::__rust_end_short_backtrace
[INFO] [stderr]   31:     0x7f266c324af7 - <rustc_middle[7d63fbd2f8df8a1e]::ty::context::TyCtxt>::par_hir_body_owners::<rustc_interface[cd445e32cdfe4b97]::passes::run_required_analyses::{closure#1}::{closure#0}>::{closure#0}
[INFO] [stderr]   32:     0x7f266c322398 - rustc_interface[cd445e32cdfe4b97]::passes::analysis
[INFO] [stderr]   33:     0x7f266c321833 - rustc_query_impl[84d3eed17e5ab449]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[84d3eed17e5ab449]::query_impl::analysis::dynamic_query::{closure#2}::{closure#0}, rustc_middle[7d63fbd2f8df8a1e]::query::erase::Erased<[u8; 0usize]>>
[INFO] [stderr]   34:     0x7f266d05fc66 - rustc_query_system[c2287fd650159af7]::query::plumbing::try_execute_query::<rustc_query_impl[84d3eed17e5ab449]::DynamicConfig<rustc_query_system[c2287fd650159af7]::query::caches::SingleCache<rustc_middle[7d63fbd2f8df8a1e]::query::erase::Erased<[u8; 0usize]>>, false, false, false>, rustc_query_impl[84d3eed17e5ab449]::plumbing::QueryCtxt, false>
[INFO] [stderr]   35:     0x7f266d05f8bc - rustc_query_impl[84d3eed17e5ab449]::query_impl::analysis::get_query_non_incr::__rust_end_short_backtrace
[INFO] [stderr]   36:     0x7f266d31c98a - <rustc_interface[cd445e32cdfe4b97]::passes::create_and_enter_global_ctxt<core[38c16e7222b5e709]::option::Option<rustc_interface[cd445e32cdfe4b97]::queries::Linker>, rustc_driver_impl[bce797706e17a736]::run_compiler::{closure#0}::{closure#2}>::{closure#2} as core[38c16e7222b5e709]::ops::function::FnOnce<(&rustc_session[55873362b0df2cab]::session::Session, rustc_middle[7d63fbd2f8df8a1e]::ty::context::CurrentGcx, alloc[b801fe7dcb3666a3]::sync::Arc<rustc_data_structures[94650649e502e822]::jobserver::Proxy>, &std[7852ca75000e74fc]::sync::once_lock::OnceLock<rustc_middle[7d63fbd2f8df8a1e]::ty::context::GlobalCtxt>, &rustc_data_structures[94650649e502e822]::sync::worker_local::WorkerLocal<rustc_middle[7d63fbd2f8df8a1e]::arena::Arena>, &rustc_data_structures[94650649e502e822]::sync::worker_local::WorkerLocal<rustc_hir[376eb1beccb76e2b]::Arena>, rustc_driver_impl[bce797706e17a736]::run_compiler::{closure#0}::{closure#2})>>::call_once::{shim:vtable#0}
[INFO] [stderr]   37:     0x7f266d15b4a9 - rustc_interface[cd445e32cdfe4b97]::interface::run_compiler::<(), rustc_driver_impl[bce797706e17a736]::run_compiler::{closure#0}>::{closure#1}
[INFO] [stderr]   38:     0x7f266ce22b7c - std[7852ca75000e74fc]::sys::backtrace::__rust_begin_short_backtrace::<rustc_interface[cd445e32cdfe4b97]::util::run_in_thread_with_globals<rustc_interface[cd445e32cdfe4b97]::util::run_in_thread_pool_with_globals<rustc_interface[cd445e32cdfe4b97]::interface::run_compiler<(), rustc_driver_impl[bce797706e17a736]::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>
[INFO] [stderr]   39:     0x7f266ce22860 - <<std[7852ca75000e74fc]::thread::Builder>::spawn_unchecked_<rustc_interface[cd445e32cdfe4b97]::util::run_in_thread_with_globals<rustc_interface[cd445e32cdfe4b97]::util::run_in_thread_pool_with_globals<rustc_interface[cd445e32cdfe4b97]::interface::run_compiler<(), rustc_driver_impl[bce797706e17a736]::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>::{closure#1} as core[38c16e7222b5e709]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stderr]   40:     0x7f266ce27aaf - std::sys::thread::unix::Thread::new::thread_start::h7f3e77fa86df70af
[INFO] [stderr]   41:     0x7f2666a8aaa4 - <unknown>
[INFO] [stderr]   42:     0x7f2666b17a64 - clone
[INFO] [stderr]   43:                0x0 - <unknown>
[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: please make sure that you have updated to the latest nightly
[INFO] [stderr] 
[INFO] [stderr] warning: the ICE couldn't be written to `/opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/constvec-0.1.14/rustc-ice-2025-11-13T22_12_59-41.txt`: Read-only file system (os error 30)
[INFO] [stderr] 
[INFO] [stderr] note: rustc 1.93.0-nightly (c2e32f1c9 2025-11-07) 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 [mir_const_qualif] const checking `<impl at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/constvec-0.1.14/src/lib.rs:232:1: 236:20>::add`
[INFO] [stderr] #1 [mir_promoted] promoting constants in MIR for `<impl at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/constvec-0.1.14/src/lib.rs:232:1: 236:20>::add`
[INFO] [stderr] #2 [mir_borrowck] borrow-checking `<impl at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/constvec-0.1.14/src/lib.rs:232:1: 236:20>::add`
[INFO] [stderr] #3 [analysis] running analysis passes on crate `constvec`
[INFO] [stderr] end of query stack
[INFO] [stdout] For more information about this error, try `rustc --explain E0658`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `constvec` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "9b6ff2d8fca117b69f7e7e55b30fd8faf06c7bab0ab0704aab8133d97388f4d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9b6ff2d8fca117b69f7e7e55b30fd8faf06c7bab0ab0704aab8133d97388f4d3", kill_on_drop: false }`
[INFO] [stdout] 9b6ff2d8fca117b69f7e7e55b30fd8faf06c7bab0ab0704aab8133d97388f4d3