[INFO] fetching crate serialization 0.2.12...
[INFO] testing serialization-0.2.12 against try#2440211fe03bc45c89b6dc1a3df18382ce91e32b for pr-146098-1
[INFO] extracting crate serialization 0.2.12 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate serialization 0.2.12
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate serialization 0.2.12
[INFO] tweaked toml for crates.io crate serialization 0.2.12 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate serialization 0.2.12 on toolchain 2440211fe03bc45c89b6dc1a3df18382ce91e32b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate serialization 0.2.12 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" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3c3eafc24952399edc782c3d3aa50059b17bf455647e85d2a1f74ee01475c51e
[INFO] running `Command { std: "docker" "start" "-a" "3c3eafc24952399edc782c3d3aa50059b17bf455647e85d2a1f74ee01475c51e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3c3eafc24952399edc782c3d3aa50059b17bf455647e85d2a1f74ee01475c51e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c3eafc24952399edc782c3d3aa50059b17bf455647e85d2a1f74ee01475c51e", kill_on_drop: false }`
[INFO] [stdout] 3c3eafc24952399edc782c3d3aa50059b17bf455647e85d2a1f74ee01475c51e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 523c167552dce308eae755e210068d194db7ecc6e474de453fcb27708a2c060b
[INFO] running `Command { std: "docker" "start" "-a" "523c167552dce308eae755e210068d194db7ecc6e474de453fcb27708a2c060b", 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 simdutf8 v0.1.5
[INFO] [stderr]    Compiling arrayvec v0.7.6
[INFO] [stderr]    Compiling fastbuf v0.28.0
[INFO] [stderr]    Compiling constvec v0.1.14
[INFO] [stderr]    Compiling uuid v1.11.0
[INFO] [stderr]    Compiling seq-macro v0.3.5
[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 2025-09-25; 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[69df]::{impl#8}::add::{constant#2}), args: ['{erased}, '{erased}, T/#2, N1/#3, N2/#4] }
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stderr] thread 'rustc' (83) 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:     0x798d421c3cc3 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hb1988e8b50fa5f19
[INFO] [stderr]    1:     0x798d428020c4 - core::fmt::write::hcd056e06a609f600
[INFO] [stderr]    2:     0x798d42178561 - std::io::Write::write_fmt::hc685c74e0b8ce55d
[INFO] [stderr]    3:     0x798d42189a32 - std::sys::backtrace::BacktraceLock::print::h69f50ba7cfff8317
[INFO] [stderr]    4:     0x798d4218f999 - std::panicking::default_hook::{{closure}}::hfa978eb2255ab3ab
[INFO] [stderr]    5:     0x798d4218f4c3 - std::panicking::default_hook::h09da2eaf8f1deadd
[INFO] [stderr]    6:     0x798d411b24d7 - std[153372ebdbebfe75]::panicking::update_hook::<alloc[817ddf4b094d8e2a]::boxed::Box<rustc_driver_impl[d0107cd3ad6513d0]::install_ice_hook::{closure#1}>>::{closure#0}
[INFO] [stderr]    7:     0x798d4218fdbf - std::panicking::panic_with_hook::h13c40d280d130fd3
[INFO] [stderr]    8:     0x798d411eeda1 - std[153372ebdbebfe75]::panicking::begin_panic::<rustc_errors[84d6d11ac59a90a3]::ExplicitBug>::{closure#0}
[INFO] [stderr]    9:     0x798d411e25b6 - std[153372ebdbebfe75]::sys::backtrace::__rust_end_short_backtrace::<std[153372ebdbebfe75]::panicking::begin_panic<rustc_errors[84d6d11ac59a90a3]::ExplicitBug>::{closure#0}, !>
[INFO] [stderr]   10:     0x798d411e0059 - std[153372ebdbebfe75]::panicking::begin_panic::<rustc_errors[84d6d11ac59a90a3]::ExplicitBug>
[INFO] [stderr]   11:     0x798d411fa491 - <rustc_errors[84d6d11ac59a90a3]::diagnostic::BugAbort as rustc_errors[84d6d11ac59a90a3]::diagnostic::EmissionGuarantee>::emit_producing_guarantee
[INFO] [stderr]   12:     0x798d4178cc9a - rustc_middle[1ffe7d7bfe5c941f]::util::bug::opt_span_bug_fmt::<rustc_span[75fc59de2454c559]::span_encoding::Span>::{closure#0}
[INFO] [stderr]   13:     0x798d4178ccfa - rustc_middle[1ffe7d7bfe5c941f]::ty::context::tls::with_opt::<rustc_middle[1ffe7d7bfe5c941f]::util::bug::opt_span_bug_fmt<rustc_span[75fc59de2454c559]::span_encoding::Span>::{closure#0}, !>::{closure#0}
[INFO] [stderr]   14:     0x798d4177b4db - rustc_middle[1ffe7d7bfe5c941f]::ty::context::tls::with_context_opt::<rustc_middle[1ffe7d7bfe5c941f]::ty::context::tls::with_opt<rustc_middle[1ffe7d7bfe5c941f]::util::bug::opt_span_bug_fmt<rustc_span[75fc59de2454c559]::span_encoding::Span>::{closure#0}, !>::{closure#0}, !>
[INFO] [stderr]   15:     0x798d3ffe4e40 - rustc_middle[1ffe7d7bfe5c941f]::util::bug::bug_fmt
[INFO] [stderr]   16:     0x798d444ee60f - rustc_const_eval[e1bccba5c35b6bb9]::check_consts::qualifs::in_operand::<rustc_const_eval[e1bccba5c35b6bb9]::check_consts::qualifs::HasMutInterior, <rustc_const_eval[e1bccba5c35b6bb9]::check_consts::resolver::TransferFunction<rustc_const_eval[e1bccba5c35b6bb9]::check_consts::qualifs::HasMutInterior> as rustc_middle[1ffe7d7bfe5c941f]::mir::visit::Visitor>::visit_assign::{closure#0}>.cold
[INFO] [stderr]   17:     0x798d43339ca4 - <rustc_const_eval[e1bccba5c35b6bb9]::check_consts::resolver::FlowSensitiveAnalysis<rustc_const_eval[e1bccba5c35b6bb9]::check_consts::qualifs::HasMutInterior> as rustc_mir_dataflow[e97c117d863c8739]::framework::Analysis>::apply_primary_statement_effect
[INFO] [stderr]   18:     0x798d43334042 - <rustc_const_eval[e1bccba5c35b6bb9]::check_consts::check::Qualifs>::has_mut_interior
[INFO] [stderr]   19:     0x798d43333486 - rustc_mir_transform[b52ceb3223a3bcd6]::mir_const_qualif
[INFO] [stderr]   20:     0x798d43333229 - rustc_query_impl[da24849da67b6905]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[da24849da67b6905]::query_impl::mir_const_qualif::dynamic_query::{closure#2}::{closure#0}, rustc_middle[1ffe7d7bfe5c941f]::query::erase::Erased<[u8; 4usize]>>
[INFO] [stderr]   21:     0x798d433326cb - rustc_query_system[49cf0dd0a6c4ce54]::query::plumbing::try_execute_query::<rustc_query_impl[da24849da67b6905]::DynamicConfig<rustc_query_system[49cf0dd0a6c4ce54]::query::caches::DefIdCache<rustc_middle[1ffe7d7bfe5c941f]::query::erase::Erased<[u8; 4usize]>>, false, false, false>, rustc_query_impl[da24849da67b6905]::plumbing::QueryCtxt, false>
[INFO] [stderr]   22:     0x798d43332412 - rustc_query_impl[da24849da67b6905]::query_impl::mir_const_qualif::get_query_non_incr::__rust_end_short_backtrace
[INFO] [stderr]   23:     0x798d3f5e1e3d - rustc_mir_transform[b52ceb3223a3bcd6]::mir_promoted
[INFO] [stderr]   24:     0x798d431a3b52 - rustc_query_impl[da24849da67b6905]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[da24849da67b6905]::query_impl::mir_promoted::dynamic_query::{closure#2}::{closure#0}, rustc_middle[1ffe7d7bfe5c941f]::query::erase::Erased<[u8; 16usize]>>
[INFO] [stderr]   25:     0x798d431a3dfe - rustc_query_system[49cf0dd0a6c4ce54]::query::plumbing::try_execute_query::<rustc_query_impl[da24849da67b6905]::DynamicConfig<rustc_data_structures[de1f44a9d4f917c8]::vec_cache::VecCache<rustc_span[75fc59de2454c559]::def_id::LocalDefId, rustc_middle[1ffe7d7bfe5c941f]::query::erase::Erased<[u8; 16usize]>, rustc_query_system[49cf0dd0a6c4ce54]::dep_graph::graph::DepNodeIndex>, false, false, false>, rustc_query_impl[da24849da67b6905]::plumbing::QueryCtxt, false>
[INFO] [stderr]   26:     0x798d431a3992 - rustc_query_impl[da24849da67b6905]::query_impl::mir_promoted::get_query_non_incr::__rust_end_short_backtrace
[INFO] [stderr]   27:     0x798d439d54e3 - rustc_borrowck[4370520312c02174]::mir_borrowck
[INFO] [stderr]   28:     0x798d439d539d - rustc_query_impl[da24849da67b6905]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[da24849da67b6905]::query_impl::mir_borrowck::dynamic_query::{closure#2}::{closure#0}, rustc_middle[1ffe7d7bfe5c941f]::query::erase::Erased<[u8; 8usize]>>
[INFO] [stderr]   29:     0x798d429c7a44 - rustc_query_system[49cf0dd0a6c4ce54]::query::plumbing::try_execute_query::<rustc_query_impl[da24849da67b6905]::DynamicConfig<rustc_data_structures[de1f44a9d4f917c8]::vec_cache::VecCache<rustc_span[75fc59de2454c559]::def_id::LocalDefId, rustc_middle[1ffe7d7bfe5c941f]::query::erase::Erased<[u8; 8usize]>, rustc_query_system[49cf0dd0a6c4ce54]::dep_graph::graph::DepNodeIndex>, false, false, false>, rustc_query_impl[da24849da67b6905]::plumbing::QueryCtxt, false>
[INFO] [stderr]   30:     0x798d429cc389 - rustc_query_impl[da24849da67b6905]::query_impl::mir_borrowck::get_query_non_incr::__rust_end_short_backtrace
[INFO] [stderr]   31:     0x798d429cc53c - <rustc_middle[1ffe7d7bfe5c941f]::ty::context::TyCtxt>::par_hir_body_owners::<rustc_interface[47f772b6099a9839]::passes::run_required_analyses::{closure#1}::{closure#0}>::{closure#0}
[INFO] [stderr]   32:     0x798d429c994c - rustc_interface[47f772b6099a9839]::passes::analysis
[INFO] [stderr]   33:     0x798d429c8ded - rustc_query_impl[da24849da67b6905]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[da24849da67b6905]::query_impl::analysis::dynamic_query::{closure#2}::{closure#0}, rustc_middle[1ffe7d7bfe5c941f]::query::erase::Erased<[u8; 0usize]>>
[INFO] [stderr]   34:     0x798d437ff71a - rustc_query_system[49cf0dd0a6c4ce54]::query::plumbing::try_execute_query::<rustc_query_impl[da24849da67b6905]::DynamicConfig<rustc_query_system[49cf0dd0a6c4ce54]::query::caches::SingleCache<rustc_middle[1ffe7d7bfe5c941f]::query::erase::Erased<[u8; 0usize]>>, false, false, false>, rustc_query_impl[da24849da67b6905]::plumbing::QueryCtxt, false>
[INFO] [stderr]   35:     0x798d437ff350 - rustc_query_impl[da24849da67b6905]::query_impl::analysis::get_query_non_incr::__rust_end_short_backtrace
[INFO] [stderr]   36:     0x798d43a6e94f - rustc_interface[47f772b6099a9839]::passes::create_and_enter_global_ctxt::<core[273ca2994e9d09f7]::option::Option<rustc_interface[47f772b6099a9839]::queries::Linker>, rustc_driver_impl[d0107cd3ad6513d0]::run_compiler::{closure#0}::{closure#2}>::{closure#2}::{closure#0}
[INFO] [stderr]   37:     0x798d43a6033e - rustc_interface[47f772b6099a9839]::interface::run_compiler::<(), rustc_driver_impl[d0107cd3ad6513d0]::run_compiler::{closure#0}>::{closure#1}
[INFO] [stderr]   38:     0x798d4396cdb8 - std[153372ebdbebfe75]::sys::backtrace::__rust_begin_short_backtrace::<rustc_interface[47f772b6099a9839]::util::run_in_thread_with_globals<rustc_interface[47f772b6099a9839]::util::run_in_thread_pool_with_globals<rustc_interface[47f772b6099a9839]::interface::run_compiler<(), rustc_driver_impl[d0107cd3ad6513d0]::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>
[INFO] [stderr]   39:     0x798d4396ca9c - <<std[153372ebdbebfe75]::thread::Builder>::spawn_unchecked_<rustc_interface[47f772b6099a9839]::util::run_in_thread_with_globals<rustc_interface[47f772b6099a9839]::util::run_in_thread_pool_with_globals<rustc_interface[47f772b6099a9839]::interface::run_compiler<(), rustc_driver_impl[d0107cd3ad6513d0]::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>::{closure#1} as core[273ca2994e9d09f7]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stderr]   40:     0x798d4397314d - std::sys::thread::unix::Thread::new::thread_start::he23d038ee4fa004e
[INFO] [stderr]   41:     0x798d3d48aaa4 - <unknown>
[INFO] [stderr]   42:     0x798d3d517a34 - 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_49_02-34.txt`: Read-only file system (os error 30)
[INFO] [stderr] 
[INFO] [stderr] note: rustc 1.92.0-nightly (2440211fe 2025-09-25) 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" "523c167552dce308eae755e210068d194db7ecc6e474de453fcb27708a2c060b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "523c167552dce308eae755e210068d194db7ecc6e474de453fcb27708a2c060b", kill_on_drop: false }`
[INFO] [stdout] 523c167552dce308eae755e210068d194db7ecc6e474de453fcb27708a2c060b