[INFO] fetching crate rustml 0.0.7... [INFO] documenting rustml-0.0.7 against try#a394c9cd9ec93787f09a7ac445b14cc674a94549 for pr-151918-2 [INFO] extracting crate rustml 0.0.7 into /workspace/builds/worker-0-tc2/source [INFO] started tweaking crates.io crate rustml 0.0.7 [INFO] removed 13 missing examples [INFO] finished tweaking crates.io crate rustml 0.0.7 [INFO] tweaked toml for crates.io crate rustml 0.0.7 written to /workspace/builds/worker-0-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate rustml 0.0.7 on toolchain a394c9cd9ec93787f09a7ac445b14cc674a94549 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a394c9cd9ec93787f09a7ac445b14cc674a94549" "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" "+a394c9cd9ec93787f09a7ac445b14cc674a94549" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 37 packages to latest compatible versions [INFO] [stderr] Adding flate2 v0.2.20 (available: v1.1.9) [INFO] [stderr] Adding num v0.1.43 (available: v0.4.3) [INFO] [stderr] Adding rand v0.4.6 (available: v0.10.0) [INFO] [stderr] Adding regex v0.1.80 (available: v1.12.3) [INFO] [stderr] Adding time v0.1.45 (available: v0.3.47) [INFO] [stderr] Adding wasi v0.10.0+wasi-snapshot-preview1 (available: v0.10.2+wasi-snapshot-preview1) [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a394c9cd9ec93787f09a7ac445b14cc674a94549" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+a394c9cd9ec93787f09a7ac445b14cc674a94549" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] b2241c884ae5e3c01acd06ac1679820a88b74fc38dad47bd8b7d3fdeae3d6433 [INFO] running `Command { std: "docker" "start" "-a" "b2241c884ae5e3c01acd06ac1679820a88b74fc38dad47bd8b7d3fdeae3d6433", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "b2241c884ae5e3c01acd06ac1679820a88b74fc38dad47bd8b7d3fdeae3d6433", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b2241c884ae5e3c01acd06ac1679820a88b74fc38dad47bd8b7d3fdeae3d6433", kill_on_drop: false }` [INFO] [stdout] b2241c884ae5e3c01acd06ac1679820a88b74fc38dad47bd8b7d3fdeae3d6433 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+a394c9cd9ec93787f09a7ac445b14cc674a94549" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] ce8741b33ce836d3a3be32504d2839ce09411352e07aed285a6507bcb79e498c [INFO] running `Command { std: "docker" "start" "-a" "ce8741b33ce836d3a3be32504d2839ce09411352e07aed285a6507bcb79e498c", kill_on_drop: false }` [INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024 [INFO] [stderr] Compiling libc v0.2.181 [INFO] [stderr] Compiling num-traits v0.2.19 [INFO] [stderr] Compiling winapi-build v0.1.1 [INFO] [stderr] Compiling find-msvc-tools v0.1.9 [INFO] [stderr] Compiling num-bigint v0.1.45 [INFO] [stderr] Checking rustc-serialize v0.3.25 [INFO] [stderr] Checking winapi v0.2.8 [INFO] [stderr] Compiling num-complex v0.1.44 [INFO] [stderr] Compiling num-rational v0.1.43 [INFO] [stderr] Compiling kernel32-sys v0.2.2 [INFO] [stderr] Compiling cc v1.2.55 [INFO] [stderr] Compiling rustml v0.0.7 (/opt/rustwide/workdir) [INFO] [stdout] warning: panic message is not a string literal [INFO] [stdout] --> build.rs:25:26 [INFO] [stdout] | [INFO] [stdout] 25 | assert!(s.success(), "\n\n".to_string() + msg); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: this usage of `assert!()` is deprecated; it will be a hard error in Rust 2021 [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: `#[warn(non_fmt_panics)]` (part of `#[warn(rust_2021_compatibility)]`) on by default [INFO] [stdout] help: add a "{}" format string to `Display` the message [INFO] [stdout] | [INFO] [stdout] 25 | assert!(s.success(), "{}", "\n\n".to_string() + msg); [INFO] [stdout] | +++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking utf8-ranges v0.1.3 [INFO] [stderr] Checking regex-syntax v0.3.9 [INFO] [stderr] Checking getopts v0.2.24 [INFO] [stderr] Checking num-integer v0.1.46 [INFO] [stderr] Compiling miniz-sys v0.1.12 [INFO] [stderr] Checking num-iter v0.1.45 [INFO] [stderr] Checking rand v0.4.6 [INFO] [stderr] Checking thread-id v2.0.0 [INFO] [stderr] Checking memchr v0.1.11 [INFO] [stderr] Checking time v0.1.45 [INFO] [stderr] Checking thread_local v0.2.7 [INFO] [stderr] Checking aho-corasick v0.5.3 [INFO] [stderr] Checking regex v0.1.80 [INFO] [stderr] Checking flate2 v0.2.20 [INFO] [stderr] Checking num v0.1.43 [INFO] [stderr] Documenting rustml v0.0.7 (/opt/rustwide/workdir) [INFO] [stdout] warning: this URL is not a hyperlink [INFO] [stdout] --> src/datasets.rs:49:47 [INFO] [stdout] | [INFO] [stdout] 49 | /// The database that is used is available at http://yann.lecun.com/exdb/mnist/ [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: bare URLs are not automatically turned into clickable links [INFO] [stdout] = note: `#[warn(rustdoc::bare_urls)]` on by default [INFO] [stdout] help: use an automatic link instead [INFO] [stdout] | [INFO] [stdout] 49 | /// The database that is used is available at [INFO] [stdout] | + + [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] [INFO] [stderr] thread 'rustc' (452) panicked at src/librustdoc/html/markdown.rs:541:22: [INFO] [stderr] a production-ready version of this should handle the error somehow: LatexError(22, UnknownCommand("^")) [INFO] [stderr] stack backtrace: [INFO] [stderr] 0: 0x75cc38e46d9b - <::print::DisplayBacktrace as core[37ab4a9f28f6fd13]::fmt::Display>::fmt [INFO] [stderr] 1: 0x75cc3940ef88 - core[37ab4a9f28f6fd13]::fmt::write [INFO] [stderr] 2: 0x75cc38e5dc36 - ::write_fmt [INFO] [stderr] 3: 0x75cc38e1ce48 - std[6281e874092a0dfc]::panicking::default_hook::{closure#0} [INFO] [stderr] 4: 0x75cc38e3a163 - std[6281e874092a0dfc]::panicking::default_hook [INFO] [stderr] 5: 0x75cc37e0ff8d - std[6281e874092a0dfc]::panicking::update_hook::>::{closure#0} [INFO] [stderr] 6: 0x75cc38e3a442 - std[6281e874092a0dfc]::panicking::panic_with_hook [INFO] [stderr] 7: 0x75cc38e1cf08 - std[6281e874092a0dfc]::panicking::panic_handler::{closure#0} [INFO] [stderr] 8: 0x75cc38e11479 - std[6281e874092a0dfc]::sys::backtrace::__rust_end_short_backtrace:: [INFO] [stderr] 9: 0x75cc38e1e96d - __rustc[670611b3f56fc7d7]::rust_begin_unwind [INFO] [stderr] 10: 0x75cc35ace58c - core[37ab4a9f28f6fd13]::panicking::panic_fmt [INFO] [stderr] 11: 0x75cc35788b72 - core[37ab4a9f28f6fd13]::result::unwrap_failed [INFO] [stderr] 12: 0x61217eae34e7 - ::into_iter::{closure#0}>>>>, ::into_iter::{closure#1}::{closure#0}>>> as core[37ab4a9f28f6fd13]::iter::traits::iterator::Iterator>::next [INFO] [stderr] 13: 0x61217ea79c16 - ::into_iter::{closure#0}>>>>, ::into_iter::{closure#1}::{closure#0}>>>> as core[37ab4a9f28f6fd13]::iter::traits::iterator::Iterator>::next [INFO] [stderr] 14: 0x61217e8df493 - ::into_iter::{closure#0}>>>>, ::into_iter::{closure#1}::{closure#0}>>>>, pulldown_cmark_escape[cb8658d251f4e39e]::FmtWriter<&mut core[37ab4a9f28f6fd13]::fmt::Formatter>>>::run [INFO] [stderr] 15: 0x61217e72eb80 - ::write_into::<&mut core[37ab4a9f28f6fd13]::fmt::Formatter> [INFO] [stderr] 16: 0x61217ead2521 - as core[37ab4a9f28f6fd13]::fmt::Display>::fmt [INFO] [stderr] 17: 0x75cc3940ef88 - core[37ab4a9f28f6fd13]::fmt::write [INFO] [stderr] 18: 0x61217ead35da - as core[37ab4a9f28f6fd13]::fmt::Display>::fmt [INFO] [stderr] 19: 0x61217eaccc8a - as core[37ab4a9f28f6fd13]::fmt::Display>::fmt [INFO] [stderr] 20: 0x75cc3940ef88 - core[37ab4a9f28f6fd13]::fmt::write [INFO] [stderr] 21: 0x61217e8bb966 - rustdoc[7f40747ea455e46f]::html::render::print_item::item_trait::{closure#0} [INFO] [stderr] 22: 0x75cc3940ef88 - core[37ab4a9f28f6fd13]::fmt::write [INFO] [stderr] 23: 0x61217e7cabaa - rustdoc[7f40747ea455e46f]::html::layout::render::, core[37ab4a9f28f6fd13]::fmt::builders::FromFn<::render_item::{closure#1}>> [INFO] [stderr] 24: 0x61217e91eb85 - ::render_item [INFO] [stderr] 25: 0x61217eab9a5e - ::item [INFO] [stderr] 26: 0x61217e7d3adc - rustdoc[7f40747ea455e46f]::formats::renderer::run_format_inner:: [INFO] [stderr] 27: 0x61217e7d3c8f - rustdoc[7f40747ea455e46f]::formats::renderer::run_format_inner:: [INFO] [stderr] 28: 0x61217e7d3c8f - rustdoc[7f40747ea455e46f]::formats::renderer::run_format_inner:: [INFO] [stderr] 29: 0x61217e7d3c8f - rustdoc[7f40747ea455e46f]::formats::renderer::run_format_inner:: [INFO] [stderr] 30: 0x61217e89c39f - rustdoc[7f40747ea455e46f]::main_args::{closure#2}::{closure#0} [INFO] [stderr] 31: 0x61217e890100 - rustc_interface[7c235db06cadd779]::interface::run_compiler::<(), rustdoc[7f40747ea455e46f]::main_args::{closure#2}>::{closure#1} [INFO] [stderr] 32: 0x61217e7c9078 - std[6281e874092a0dfc]::sys::backtrace::__rust_begin_short_backtrace::::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()> [INFO] [stderr] 33: 0x61217e8c2df7 - ::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>::{closure#1} as core[37ab4a9f28f6fd13]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0} [INFO] [stderr] 34: 0x75cc3a61dbac - ::new::thread_start [INFO] [stderr] 35: 0x75cc3408aaa4 - [INFO] [stderr] 36: 0x75cc34117a64 - clone [INFO] [stderr] 37: 0x0 - [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-2026-02-09T21_35_35-451.txt`: Read-only file system (os error 30) [INFO] [stderr] [INFO] [stderr] note: rustc 1.95.0-nightly (a394c9cd9 2026-01-31) 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 `rustml` [INFO] running `Command { std: "docker" "inspect" "ce8741b33ce836d3a3be32504d2839ce09411352e07aed285a6507bcb79e498c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ce8741b33ce836d3a3be32504d2839ce09411352e07aed285a6507bcb79e498c", kill_on_drop: false }` [INFO] [stdout] ce8741b33ce836d3a3be32504d2839ce09411352e07aed285a6507bcb79e498c