[INFO] fetching crate ai_masker_lab 0.1.0...
[INFO] documenting ai_masker_lab-0.1.0 against da3f5c31e5535b3dc210067de660a45784ae1e9c for pr-162169
[INFO] extracting crate ai_masker_lab 0.1.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate ai_masker_lab 0.1.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate ai_masker_lab 0.1.0
[INFO] tweaked toml for crates.io crate ai_masker_lab 0.1.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate ai_masker_lab 0.1.0 on toolchain da3f5c31e5535b3dc210067de660a45784ae1e9c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+da3f5c31e5535b3dc210067de660a45784ae1e9c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate ai_masker_lab 0.1.0 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" "+da3f5c31e5535b3dc210067de660a45784ae1e9c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:8683fc1fc2eb5c9ac98e0d076ab094b2ffac7f99da555d2b6a2e27f346de2ec7" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] f79628f6145023b4c9e0db645417bf485d70d8cc6e6ac92704a5ffd5316cf38d
[INFO] running `Command { std: "docker" "start" "f79628f6145023b4c9e0db645417bf485d70d8cc6e6ac92704a5ffd5316cf38d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f79628f6145023b4c9e0db645417bf485d70d8cc6e6ac92704a5ffd5316cf38d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "f79628f6145023b4c9e0db645417bf485d70d8cc6e6ac92704a5ffd5316cf38d" "/opt/rustwide/cargo-home/bin/cargo" "+da3f5c31e5535b3dc210067de660a45784ae1e9c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f79628f6145023b4c9e0db645417bf485d70d8cc6e6ac92704a5ffd5316cf38d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "f79628f6145023b4c9e0db645417bf485d70d8cc6e6ac92704a5ffd5316cf38d" "/opt/rustwide/cargo-home/bin/cargo" "+da3f5c31e5535b3dc210067de660a45784ae1e9c" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.182
[INFO] [stderr]    Compiling zerocopy v0.8.40
[INFO] [stderr]    Compiling zerocopy-derive v0.8.40
[INFO] [stderr]     Checking zerofrom v0.1.6
[INFO] [stderr]     Checking serde v1.0.228
[INFO] [stderr]    Compiling bytemuck_derive v1.10.2
[INFO] [stderr]    Compiling pulp v0.22.2
[INFO] [stderr]     Checking hashbrown v0.16.1
[INFO] [stderr]     Checking raw-cpuid v11.6.0
[INFO] [stderr]     Checking reborrow v0.5.5
[INFO] [stderr]    Compiling dyn-stack-macros v0.1.3
[INFO] [stderr]     Checking pulp-wasm-simd-flag v0.1.0
[INFO] [stderr]    Compiling serde_json v1.0.149
[INFO] [stderr]    Compiling tracing-attributes v0.1.31
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]     Checking futures-util v0.3.32
[INFO] [stderr]     Checking yoke v0.8.1
[INFO] [stderr]     Checking typed-path v0.12.3
[INFO] [stderr]    Compiling enum-as-inner v0.6.1
[INFO] [stderr]     Checking regex v1.12.3
[INFO] [stderr]     Checking zerovec v0.11.5
[INFO] [stderr]     Checking zerotrie v0.2.3
[INFO] [stderr]     Checking indexmap v2.13.0
[INFO] [stderr]     Checking base64ct v1.8.3
[INFO] [stderr]     Checking nom v7.1.3
[INFO] [stderr]     Checking combine v4.6.7
[INFO] [stderr]     Checking itertools v0.11.0
[INFO] [stderr]     Checking toml_datetime v0.6.11
[INFO] [stderr]     Checking tinystr v0.8.2
[INFO] [stderr]     Checking potential_utf v0.1.4
[INFO] [stderr]     Checking serde_spanned v0.6.9
[INFO] [stderr]     Checking thiserror v1.0.69
[INFO] [stderr]    Compiling jobserver v0.1.34
[INFO] [stderr]     Checking icu_collections v2.1.1
[INFO] [stderr]     Checking zip v7.2.0
[INFO] [stderr]    Compiling monostate-impl v0.1.18
[INFO] [stderr]     Checking number_prefix v0.4.0
[INFO] [stderr]     Checking icu_locale_core v2.1.1
[INFO] [stderr]     Checking bytemuck v1.25.0
[INFO] [stderr]    Compiling macro_rules_attribute-proc_macro v0.2.2
[INFO] [stderr]     Checking monostate v0.1.18
[INFO] [stderr]    Compiling cc v1.2.56
[INFO] [stderr]     Checking num-complex v0.4.6
[INFO] [stderr]     Checking dyn-stack v0.13.2
[INFO] [stderr]     Checking tracing v0.1.44
[INFO] [stderr]     Checking safetensors v0.7.0
[INFO] [stderr]     Checking macro_rules_attribute v0.2.2
[INFO] [stderr]     Checking time v0.3.47
[INFO] [stderr]     Checking toml_edit v0.22.27
[INFO] [stderr]     Checking serde_plain v1.0.2
[INFO] [stderr]     Checking serde_urlencoded v0.7.1
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]     Checking fancy-regex v0.17.0
[INFO] [stderr]     Checking unicode-normalization-alignments v0.1.12
[INFO] [stderr]     Checking icu_provider v2.1.1
[INFO] [stderr]     Checking itertools v0.12.1
[INFO] [stderr]     Checking unicode_categories v0.1.1
[INFO] [stderr]     Checking serde_yaml v0.9.34+deprecated
[INFO] [stderr]     Checking chrono v0.4.44
[INFO] [stderr]     Checking icu_properties v2.1.2
[INFO] [stderr]     Checking icu_normalizer v2.1.1
[INFO] [stderr]     Checking getrandom v0.2.17
[INFO] [stderr]     Checking getrandom v0.3.4
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking mio v1.1.1
[INFO] [stderr]     Checking rand_core v0.9.5
[INFO] [stderr]     Checking socket2 v0.6.3
[INFO] [stderr]     Checking num_cpus v1.17.0
[INFO] [stderr]    Compiling openssl-sys v0.9.111
[INFO] [stderr]     Checking crypto-common v0.1.7
[INFO] [stderr]    Compiling zstd-sys v2.0.16+zstd.1.5.7
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking cipher v0.4.4
[INFO] [stderr]    Compiling onig_sys v69.9.1
[INFO] [stderr]    Compiling bzip2-sys v0.1.13+1.0.8
[INFO] [stderr]     Checking tokio v1.50.0
[INFO] [stderr]     Checking universal-hash v0.5.1
[INFO] [stderr]    Compiling esaxx-rs v0.1.10
[INFO] [stderr]     Checking socket2 v0.5.10
[INFO] [stderr]     Checking memmap2 v0.9.10
[INFO] [stderr]     Checking polyval v0.6.2
[INFO] [stderr]     Checking aes v0.8.4
[INFO] [stderr]     Checking sha2 v0.10.9
[INFO] [stderr]     Checking hmac v0.12.1
[INFO] [stderr]     Checking password-hash v0.4.2
[INFO] [stderr]     Checking parking_lot_core v0.9.12
[INFO] [stderr]     Checking nix v0.26.4
[INFO] [stderr]     Checking is-terminal v0.4.17
[INFO] [stderr]     Checking sysctl v0.5.5
[INFO] [stderr]     Checking console v0.15.11
[INFO] [stderr]     Checking env_logger v0.10.2
[INFO] [stderr]     Checking pbkdf2 v0.11.0
[INFO] [stderr]    Compiling openssl v0.10.75
[INFO] [stderr]    Compiling native-tls v0.2.18
[INFO] [stderr]     Checking parking_lot v0.12.5
[INFO] [stderr]     Checking idna_adapter v1.2.1
[INFO] [stderr]     Checking bzip2 v0.4.4
[INFO] [stderr]     Checking ghash v0.5.1
[INFO] [stderr]     Checking idna v1.1.0
[INFO] [stderr]     Checking indicatif v0.17.11
[INFO] [stderr]     Checking ctr v0.9.2
[INFO] [stderr]     Checking spm_precompiled v0.1.4
[INFO] [stderr]     Checking sha1 v0.10.6
[INFO] [stderr]     Checking aead v0.5.2
[INFO] [stderr]     Checking rayon-cond v0.3.0
[INFO] [stderr]     Checking cpu-time v1.0.0
[INFO] [stderr]     Checking aes-gcm v0.10.3
[INFO] [stderr]     Checking toml v0.8.23
[INFO] [stderr]     Checking url v2.5.8
[INFO] [stderr]     Checking sysinfo v0.30.13
[INFO] [stderr]     Checking onig v6.5.1
[INFO] [stderr]     Checking ppv-lite86 v0.2.21
[INFO] [stderr]     Checking ahash v0.8.12
[INFO] [stderr]     Checking hashbrown v0.14.5
[INFO] [stderr]     Checking rand_chacha v0.9.0
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking rand v0.9.2
[INFO] [stderr]    Compiling zstd-safe v5.0.2+zstd.1.5.2
[INFO] [stderr]     Checking tokio-util v0.7.18
[INFO] [stderr]     Checking rand_distr v0.5.1
[INFO] [stderr]     Checking zstd v0.11.2+zstd.1.5.2
[INFO] [stderr]     Checking skiplist v0.5.1
[INFO] [stderr]     Checking tokenizers v0.19.1
[INFO] [stderr]     Checking zip v0.6.6
[INFO] [stderr]     Checking h2 v0.3.27
[INFO] [stderr]     Checking mmap-rs v0.6.1
[INFO] [stderr]     Checking half v2.7.1
[INFO] [stderr]     Checking tokio-native-tls v0.3.1
[INFO] [stderr]     Checking hnsw_rs v0.2.1
[INFO] [stderr]     Checking gemm-common v0.19.0
[INFO] [stderr]     Checking float8 v0.6.1
[INFO] [stderr]     Checking gemm-f32 v0.19.0
[INFO] [stderr]     Checking gemm-c64 v0.19.0
[INFO] [stderr]     Checking gemm-f64 v0.19.0
[INFO] [stderr]     Checking gemm-c32 v0.19.0
[INFO] [stderr]     Checking gemm-f16 v0.19.0
[INFO] [stderr]     Checking gemm v0.19.0
[INFO] [stderr]     Checking candle-core v0.9.2
[INFO] [stderr]     Checking hyper v0.14.32
[INFO] [stderr]     Checking hyper-tls v0.5.0
[INFO] [stderr]     Checking reqwest v0.11.27
[INFO] [stderr]     Checking candle-nn v0.9.2
[INFO] [stderr]     Checking candle-transformers v0.9.2
[INFO] [stderr]  Documenting ai_masker_lab v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] 
[INFO] [stderr] thread 'rustc' (1442) panicked at /rustc-dev/da3f5c31e5535b3dc210067de660a45784ae1e9c/compiler/rustc_resolve/src/rustdoc.rs:650:47:
[INFO] [stderr] end byte index 1 is not a char boundary; it is inside '知' (bytes 0..3 of string)
[INFO] [stderr] stack backtrace:
[INFO] [stderr]    0:     0x760510e44f16 - <<std[c2577c5add975170]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[45eb60b2de227a2c]::fmt::Display>::fmt
[INFO] [stderr]    1:     0x76051140bb0f - core[45eb60b2de227a2c]::fmt::write
[INFO] [stderr]    2:     0x760510e5a00c - <std[c2577c5add975170]::sys::stdio::unix::Stderr as core[45eb60b2de227a2c]::io::write::Write>::write_fmt
[INFO] [stderr]    3:     0x760510e177ea - std[c2577c5add975170]::panicking::default_hook::{closure#0}
[INFO] [stderr]    4:     0x760510e39243 - std[c2577c5add975170]::panicking::default_hook
[INFO] [stderr]    5:     0x76050fdaf4cf - std[c2577c5add975170]::panicking::update_hook::<alloc[223e3de3f1abdb8b]::boxed::Box<rustc_driver_impl[4b73d46cdbe287a1]::install_ice_hook::{closure#1}>>::{closure#0}
[INFO] [stderr]    6:     0x760510e396e2 - std[c2577c5add975170]::panicking::panic_with_hook
[INFO] [stderr]    7:     0x760510e178a2 - std[c2577c5add975170]::panicking::panic_handler::{closure#0}
[INFO] [stderr]    8:     0x760510e0f4a9 - std[c2577c5add975170]::sys::backtrace::__rust_end_short_backtrace::<std[c2577c5add975170]::panicking::panic_handler::{closure#0}, !>
[INFO] [stderr]    9:     0x760510e1947d - __rustc[b1482ee701bb2aa]::rust_begin_unwind
[INFO] [stderr]   10:     0x76050dc211ec - core[45eb60b2de227a2c]::panicking::panic_fmt
[INFO] [stderr]   11:     0x76050f73a9c3 - core[45eb60b2de227a2c]::str::slice_error_fail_rt
[INFO] [stderr]   12:     0x76050f53845a - core[45eb60b2de227a2c]::str::slice_error_fail
[INFO] [stderr]   13:     0x7605109bbacb - rustc_resolve[9ed1b7cef59020b5]::rustdoc::source_span_for_markdown_range_inner
[INFO] [stderr]   14:     0x61b9a147ca0b - <rustdoc[33599144c5b96b58]::passes::lint::Linter as rustdoc[33599144c5b96b58]::visit::DocVisitor>::visit_item
[INFO] [stderr]   15:     0x61b9a14794f6 - <rustdoc[33599144c5b96b58]::passes::lint::Linter as rustdoc[33599144c5b96b58]::visit::DocVisitor>::visit_item
[INFO] [stderr]   16:     0x61b9a143472f - rustdoc[33599144c5b96b58]::core::run_global_ctxt
[INFO] [stderr]   17:     0x61b9a1515860 - rustdoc[33599144c5b96b58]::main_args::{closure#2}::{closure#0}
[INFO] [stderr]   18:     0x61b9a152302d - rustc_interface[6115ffe46e65b891]::interface::run_compiler::<(), rustdoc[33599144c5b96b58]::main_args::{closure#2}>::{closure#2}
[INFO] [stderr]   19:     0x61b9a1520bd3 - std[c2577c5add975170]::sys::backtrace::__rust_begin_short_backtrace::<rustc_interface[6115ffe46e65b891]::util::run_in_thread_with_globals<rustc_interface[6115ffe46e65b891]::util::run_in_thread_pool_with_globals<rustc_interface[6115ffe46e65b891]::interface::run_compiler<(), rustdoc[33599144c5b96b58]::main_args::{closure#2}>::{closure#2}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>
[INFO] [stderr]   20:     0x61b9a152093f - <std[c2577c5add975170]::thread::lifecycle::spawn_unchecked<rustc_interface[6115ffe46e65b891]::util::run_in_thread_with_globals<rustc_interface[6115ffe46e65b891]::util::run_in_thread_pool_with_globals<rustc_interface[6115ffe46e65b891]::interface::run_compiler<(), rustdoc[33599144c5b96b58]::main_args::{closure#2}>::{closure#2}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>::{closure#1} as core[45eb60b2de227a2c]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stderr]   21:     0x760512858a87 - <std[c2577c5add975170]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stderr]   22:     0x76050bc4607a - <unknown>
[INFO] [stderr]   23:     0x76050bcd9534 - clone
[INFO] [stderr]   24:                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-rustdoc&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/workdir/rustc-ice-2026-09-07T13_55_05-1441.txt`: Read-only file system (os error 30)
[INFO] [stderr] 
[INFO] [stderr] note: rustc 1.100.0-nightly (da3f5c31e 2026-09-02) running on x86_64-unknown-linux-gnu
[INFO] [stderr] 
[INFO] [stderr] note: compiler flags: --crate-type lib
[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] end of query stack
[INFO] [stderr] error: could not document `ai_masker_lab`
[INFO] running `Command { std: "docker" "inspect" "f79628f6145023b4c9e0db645417bf485d70d8cc6e6ac92704a5ffd5316cf38d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f79628f6145023b4c9e0db645417bf485d70d8cc6e6ac92704a5ffd5316cf38d", kill_on_drop: false }`
[INFO] [stdout] f79628f6145023b4c9e0db645417bf485d70d8cc6e6ac92704a5ffd5316cf38d
