[INFO] fetching crate serialization_minecraft 0.2.13...
[INFO] testing serialization_minecraft-0.2.13 against master#caccb4d0368bd918ef6668af8e13834d07040417 for pr-146098-1
[INFO] extracting crate serialization_minecraft 0.2.13 into /workspace/builds/worker-6-tc1/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-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate serialization_minecraft 0.2.13 on toolchain caccb4d0368bd918ef6668af8e13834d07040417
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "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" "+caccb4d0368bd918ef6668af8e13834d07040417" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded concat-idents v1.1.5
[INFO] [stderr]   Downloaded constvec v0.1.14
[INFO] [stderr]   Downloaded nonmax v0.5.5
[INFO] [stderr]   Downloaded serialization v0.2.13
[INFO] [stderr]   Downloaded serialization_derive v0.2.13
[INFO] [stderr]   Downloaded fastbuf v0.28.0
[INFO] [stderr]   Downloaded concat-idents-bruce0203 v1.1.6
[INFO] [stderr]   Downloaded fastvarint v0.22.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 553a5f62b670e82a97884fc1b43bf8da8e2c155985db0d533c510be7f4ef4f52
[INFO] running `Command { std: "docker" "start" "-a" "553a5f62b670e82a97884fc1b43bf8da8e2c155985db0d533c510be7f4ef4f52", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "553a5f62b670e82a97884fc1b43bf8da8e2c155985db0d533c510be7f4ef4f52", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "553a5f62b670e82a97884fc1b43bf8da8e2c155985db0d533c510be7f4ef4f52", kill_on_drop: false }`
[INFO] [stdout] 553a5f62b670e82a97884fc1b43bf8da8e2c155985db0d533c510be7f4ef4f52
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 01542c85071e3d3725139c82301842dd71ca8ebd478e6b126a58bf9ff2276b41
[INFO] running `Command { std: "docker" "start" "-a" "01542c85071e3d3725139c82301842dd71ca8ebd478e6b126a58bf9ff2276b41", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.92
[INFO] [stderr]    Compiling unicode-ident v1.0.14
[INFO] [stderr]    Compiling unicode-segmentation v1.12.0
[INFO] [stderr]    Compiling serde v1.0.216
[INFO] [stderr]    Compiling uuid v1.11.0
[INFO] [stderr]    Compiling seq-macro v0.3.5
[INFO] [stderr]    Compiling fastbuf v0.28.0
[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 2025-09-24; 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:357:13: expected ConstKind::Param or ConstKind::Value here, found UnevaluatedConst { def: DefId(0:111 ~ constvec[88af]::{impl#8}::add::{constant#2}), args: ['{erased}, '{erased}, T/#2, N1/#3, N2/#4] }
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stderr] thread 'rustc' (69) panicked at compiler/rustc_const_eval/src/check_consts/qualifs.rs:357:13:
[INFO] [stderr] Box<dyn Any>
[INFO] [stderr] stack backtrace:
[INFO] [stderr]    0:     0x7138883cc243 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h52160e9da139e442
[INFO] [stderr]    1:     0x713888a02004 - core::fmt::write::hf09a056a304e021a
[INFO] [stderr]    2:     0x713888380ac1 - std::io::Write::write_fmt::h361c7127187cda65
[INFO] [stderr]    3:     0x713888391fb2 - std::sys::backtrace::BacktraceLock::print::h15104dbcf0fd1f14
[INFO] [stderr]    4:     0x713888397f19 - std::panicking::default_hook::{{closure}}::h0fa6cd8dbe0dd76b
[INFO] [stderr]    5:     0x713888397a43 - std::panicking::default_hook::h8d20506cf72e4831
[INFO] [stderr]    6:     0x7138873bc747 - std[7e5923e4fb083e6e]::panicking::update_hook::<alloc[80fc306e8c98d7a4]::boxed::Box<rustc_driver_impl[bee8db6accd21c89]::install_ice_hook::{closure#1}>>::{closure#0}
[INFO] [stderr]    7:     0x71388839833f - std::panicking::panic_with_hook::h746880a052e02c85
[INFO] [stderr]    8:     0x7138873f89d1 - std[7e5923e4fb083e6e]::panicking::begin_panic::<rustc_errors[9c69d5374248998b]::ExplicitBug>::{closure#0}
[INFO] [stderr]    9:     0x7138873ec346 - std[7e5923e4fb083e6e]::sys::backtrace::__rust_end_short_backtrace::<std[7e5923e4fb083e6e]::panicking::begin_panic<rustc_errors[9c69d5374248998b]::ExplicitBug>::{closure#0}, !>
[INFO] [stderr]   10:     0x7138873e9c89 - std[7e5923e4fb083e6e]::panicking::begin_panic::<rustc_errors[9c69d5374248998b]::ExplicitBug>
[INFO] [stderr]   11:     0x7138874040c1 - <rustc_errors[9c69d5374248998b]::diagnostic::BugAbort as rustc_errors[9c69d5374248998b]::diagnostic::EmissionGuarantee>::emit_producing_guarantee
[INFO] [stderr]   12:     0x71388799613a - rustc_middle[85294cbce27cd394]::util::bug::opt_span_bug_fmt::<rustc_span[19f7d544e5f5d2e0]::span_encoding::Span>::{closure#0}
[INFO] [stderr]   13:     0x71388799619a - rustc_middle[85294cbce27cd394]::ty::context::tls::with_opt::<rustc_middle[85294cbce27cd394]::util::bug::opt_span_bug_fmt<rustc_span[19f7d544e5f5d2e0]::span_encoding::Span>::{closure#0}, !>::{closure#0}
[INFO] [stderr]   14:     0x71388798497b - rustc_middle[85294cbce27cd394]::ty::context::tls::with_context_opt::<rustc_middle[85294cbce27cd394]::ty::context::tls::with_opt<rustc_middle[85294cbce27cd394]::util::bug::opt_span_bug_fmt<rustc_span[19f7d544e5f5d2e0]::span_encoding::Span>::{closure#0}, !>::{closure#0}, !>
[INFO] [stderr]   15:     0x7138861b51e0 - rustc_middle[85294cbce27cd394]::util::bug::bug_fmt
[INFO] [stderr]   16:     0x71388a6fc30f - rustc_const_eval[776b5f2f27615342]::check_consts::qualifs::in_operand::<rustc_const_eval[776b5f2f27615342]::check_consts::qualifs::HasMutInterior, <rustc_const_eval[776b5f2f27615342]::check_consts::resolver::TransferFunction<rustc_const_eval[776b5f2f27615342]::check_consts::qualifs::HasMutInterior> as rustc_middle[85294cbce27cd394]::mir::visit::Visitor>::visit_assign::{closure#0}>.cold
[INFO] [stderr]   17:     0x7138895476e4 - <rustc_const_eval[776b5f2f27615342]::check_consts::resolver::FlowSensitiveAnalysis<rustc_const_eval[776b5f2f27615342]::check_consts::qualifs::HasMutInterior> as rustc_mir_dataflow[cda90f794aed1316]::framework::Analysis>::apply_primary_statement_effect
[INFO] [stderr]   18:     0x7138895419c2 - <rustc_const_eval[776b5f2f27615342]::check_consts::check::Qualifs>::has_mut_interior
[INFO] [stderr]   19:     0x713889540e06 - rustc_mir_transform[c2bf3504227b03e4]::mir_const_qualif
[INFO] [stderr]   20:     0x713889540ba9 - rustc_query_impl[f5e7cf8f1e8ef554]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[f5e7cf8f1e8ef554]::query_impl::mir_const_qualif::dynamic_query::{closure#2}::{closure#0}, rustc_middle[85294cbce27cd394]::query::erase::Erased<[u8; 4usize]>>
[INFO] [stderr]   21:     0x71388954004b - rustc_query_system[70b7ad0dceeed8ae]::query::plumbing::try_execute_query::<rustc_query_impl[f5e7cf8f1e8ef554]::DynamicConfig<rustc_query_system[70b7ad0dceeed8ae]::query::caches::DefIdCache<rustc_middle[85294cbce27cd394]::query::erase::Erased<[u8; 4usize]>>, false, false, false>, rustc_query_impl[f5e7cf8f1e8ef554]::plumbing::QueryCtxt, false>
[INFO] [stderr]   22:     0x71388953fd8a - rustc_query_impl[f5e7cf8f1e8ef554]::query_impl::mir_const_qualif::get_query_non_incr::__rust_end_short_backtrace
[INFO] [stderr]   23:     0x713885d526fd - rustc_mir_transform[c2bf3504227b03e4]::mir_promoted
[INFO] [stderr]   24:     0x7138893f3252 - rustc_query_impl[f5e7cf8f1e8ef554]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[f5e7cf8f1e8ef554]::query_impl::mir_promoted::dynamic_query::{closure#2}::{closure#0}, rustc_middle[85294cbce27cd394]::query::erase::Erased<[u8; 16usize]>>
[INFO] [stderr]   25:     0x7138893f34fe - rustc_query_system[70b7ad0dceeed8ae]::query::plumbing::try_execute_query::<rustc_query_impl[f5e7cf8f1e8ef554]::DynamicConfig<rustc_data_structures[13fd9d25269acce7]::vec_cache::VecCache<rustc_span[19f7d544e5f5d2e0]::def_id::LocalDefId, rustc_middle[85294cbce27cd394]::query::erase::Erased<[u8; 16usize]>, rustc_query_system[70b7ad0dceeed8ae]::dep_graph::graph::DepNodeIndex>, false, false, false>, rustc_query_impl[f5e7cf8f1e8ef554]::plumbing::QueryCtxt, false>
[INFO] [stderr]   26:     0x7138893f3092 - rustc_query_impl[f5e7cf8f1e8ef554]::query_impl::mir_promoted::get_query_non_incr::__rust_end_short_backtrace
[INFO] [stderr]   27:     0x713889c02ea3 - rustc_borrowck[1aa8fdff2e632214]::mir_borrowck
[INFO] [stderr]   28:     0x713889c02d5d - rustc_query_impl[f5e7cf8f1e8ef554]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[f5e7cf8f1e8ef554]::query_impl::mir_borrowck::dynamic_query::{closure#2}::{closure#0}, rustc_middle[85294cbce27cd394]::query::erase::Erased<[u8; 8usize]>>
[INFO] [stderr]   29:     0x713888bd19c4 - rustc_query_system[70b7ad0dceeed8ae]::query::plumbing::try_execute_query::<rustc_query_impl[f5e7cf8f1e8ef554]::DynamicConfig<rustc_data_structures[13fd9d25269acce7]::vec_cache::VecCache<rustc_span[19f7d544e5f5d2e0]::def_id::LocalDefId, rustc_middle[85294cbce27cd394]::query::erase::Erased<[u8; 8usize]>, rustc_query_system[70b7ad0dceeed8ae]::dep_graph::graph::DepNodeIndex>, false, false, false>, rustc_query_impl[f5e7cf8f1e8ef554]::plumbing::QueryCtxt, false>
[INFO] [stderr]   30:     0x713888bd6309 - rustc_query_impl[f5e7cf8f1e8ef554]::query_impl::mir_borrowck::get_query_non_incr::__rust_end_short_backtrace
[INFO] [stderr]   31:     0x713888bd64bc - <rustc_middle[85294cbce27cd394]::ty::context::TyCtxt>::par_hir_body_owners::<rustc_interface[2ea1c423c56ccb20]::passes::run_required_analyses::{closure#1}::{closure#0}>::{closure#0}
[INFO] [stderr]   32:     0x713888bd38cc - rustc_interface[2ea1c423c56ccb20]::passes::analysis
[INFO] [stderr]   33:     0x713888bd2d6d - rustc_query_impl[f5e7cf8f1e8ef554]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[f5e7cf8f1e8ef554]::query_impl::analysis::dynamic_query::{closure#2}::{closure#0}, rustc_middle[85294cbce27cd394]::query::erase::Erased<[u8; 0usize]>>
[INFO] [stderr]   34:     0x713889a92a48 - rustc_query_system[70b7ad0dceeed8ae]::query::plumbing::try_execute_query::<rustc_query_impl[f5e7cf8f1e8ef554]::DynamicConfig<rustc_query_system[70b7ad0dceeed8ae]::query::caches::SingleCache<rustc_middle[85294cbce27cd394]::query::erase::Erased<[u8; 0usize]>>, false, false, false>, rustc_query_impl[f5e7cf8f1e8ef554]::plumbing::QueryCtxt, false>
[INFO] [stderr]   35:     0x713889a92708 - rustc_query_impl[f5e7cf8f1e8ef554]::query_impl::analysis::get_query_non_incr::__rust_end_short_backtrace
[INFO] [stderr]   36:     0x713889e0ec4f - rustc_interface[2ea1c423c56ccb20]::passes::create_and_enter_global_ctxt::<core[a75fa55fde0009ec]::option::Option<rustc_interface[2ea1c423c56ccb20]::queries::Linker>, rustc_driver_impl[bee8db6accd21c89]::run_compiler::{closure#0}::{closure#2}>::{closure#2}::{closure#0}
[INFO] [stderr]   37:     0x713889bdd87e - rustc_interface[2ea1c423c56ccb20]::interface::run_compiler::<(), rustc_driver_impl[bee8db6accd21c89]::run_compiler::{closure#0}>::{closure#1}
[INFO] [stderr]   38:     0x713889b62b38 - std[7e5923e4fb083e6e]::sys::backtrace::__rust_begin_short_backtrace::<rustc_interface[2ea1c423c56ccb20]::util::run_in_thread_with_globals<rustc_interface[2ea1c423c56ccb20]::util::run_in_thread_pool_with_globals<rustc_interface[2ea1c423c56ccb20]::interface::run_compiler<(), rustc_driver_impl[bee8db6accd21c89]::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>
[INFO] [stderr]   39:     0x713889b6281c - <<std[7e5923e4fb083e6e]::thread::Builder>::spawn_unchecked_<rustc_interface[2ea1c423c56ccb20]::util::run_in_thread_with_globals<rustc_interface[2ea1c423c56ccb20]::util::run_in_thread_pool_with_globals<rustc_interface[2ea1c423c56ccb20]::interface::run_compiler<(), rustc_driver_impl[bee8db6accd21c89]::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>::{closure#1} as core[a75fa55fde0009ec]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stderr]   40:     0x713889b685cd - std::sys::thread::unix::Thread::new::thread_start::h14ea1ba6e320367c
[INFO] [stderr]   41:     0x71388368aaa4 - <unknown>
[INFO] [stderr]   42:     0x713883717a34 - 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-2025-10-01T18_48_55-35.txt`: Read-only file system (os error 30)
[INFO] [stderr] 
[INFO] [stderr] note: rustc 1.92.0-nightly (caccb4d03 2025-09-24) 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 this crate
[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" "01542c85071e3d3725139c82301842dd71ca8ebd478e6b126a58bf9ff2276b41", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "01542c85071e3d3725139c82301842dd71ca8ebd478e6b126a58bf9ff2276b41", kill_on_drop: false }`
[INFO] [stdout] 01542c85071e3d3725139c82301842dd71ca8ebd478e6b126a58bf9ff2276b41