[INFO] cloning repository https://github.com/github0112/cs220 [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/github0112/cs220" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgithub0112%2Fcs220", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgithub0112%2Fcs220'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 02b72ecf783c96b4887f4408636f352c922eb5e7 [INFO] checking github0112/cs220 against try#66388cc165a6c4ac98c074dc9f0281ff23528c55 for pr-150727 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgithub0112%2Fcs220" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'... [INFO] [stderr] done. [INFO] removed /workspace/builds/worker-7-tc2/source/rust-toolchain [INFO] started tweaking git repo https://github.com/github0112/cs220 [INFO] finished tweaking git repo https://github.com/github0112/cs220 [INFO] tweaked toml for git repo https://github.com/github0112/cs220 written to /workspace/builds/worker-7-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/github0112/cs220 on toolchain 66388cc165a6c4ac98c074dc9f0281ff23528c55 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+66388cc165a6c4ac98c074dc9f0281ff23528c55" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/github0112/cs220 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" "+66388cc165a6c4ac98c074dc9f0281ff23528c55" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+66388cc165a6c4ac98c074dc9f0281ff23528c55" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] d006682f5330d7019197516c628571a659242ee4da322e4678e52a88c4eab6d3 [INFO] running `Command { std: "docker" "start" "-a" "d006682f5330d7019197516c628571a659242ee4da322e4678e52a88c4eab6d3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "d006682f5330d7019197516c628571a659242ee4da322e4678e52a88c4eab6d3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d006682f5330d7019197516c628571a659242ee4da322e4678e52a88c4eab6d3", kill_on_drop: false }` [INFO] [stdout] d006682f5330d7019197516c628571a659242ee4da322e4678e52a88c4eab6d3 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+66388cc165a6c4ac98c074dc9f0281ff23528c55" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] d315af6dfddee8b52559c85bc4baaea9d00816124ac09fe74ecb09a3713aac7b [INFO] running `Command { std: "docker" "start" "-a" "d315af6dfddee8b52559c85bc4baaea9d00816124ac09fe74ecb09a3713aac7b", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.66 [INFO] [stderr] Compiling unicode-ident v1.0.11 [INFO] [stderr] Compiling libc v0.2.147 [INFO] [stderr] Compiling libm v0.2.7 [INFO] [stderr] Compiling num-traits v0.2.16 [INFO] [stderr] Compiling thiserror v1.0.47 [INFO] [stderr] Compiling crossbeam-utils v0.8.16 [INFO] [stderr] Compiling memoffset v0.9.0 [INFO] [stderr] Compiling once_cell v1.18.0 [INFO] [stderr] Compiling rustix v0.38.8 [INFO] [stderr] Compiling crossbeam-epoch v0.9.15 [INFO] [stderr] Checking linux-raw-sys v0.4.5 [INFO] [stderr] Checking bitflags v2.4.0 [INFO] [stderr] Compiling hashbrown v0.14.0 [INFO] [stderr] Compiling matrixmultiply v0.3.7 [INFO] [stderr] Compiling num-integer v0.1.45 [INFO] [stderr] Compiling toml_datetime v0.6.3 [INFO] [stderr] Compiling winnow v0.5.14 [INFO] [stderr] Compiling ucd-trie v0.1.6 [INFO] [stderr] Checking utf8parse v0.2.1 [INFO] [stderr] Checking colorchoice v1.0.0 [INFO] [stderr] Checking anstyle-query v1.0.0 [INFO] [stderr] Checking anstyle-parse v0.2.1 [INFO] [stderr] Compiling rayon-core v1.11.0 [INFO] [stderr] Checking anstyle v1.0.1 [INFO] [stderr] Checking clap_lex v0.5.0 [INFO] [stderr] Checking either v1.9.0 [INFO] [stderr] Compiling anyhow v1.0.75 [INFO] [stderr] Checking etrace v1.1.1 [INFO] [stderr] Compiling indexmap v2.0.0 [INFO] [stderr] Checking itertools v0.11.0 [INFO] [stderr] Checking getrandom v0.2.10 [INFO] [stderr] Checking num_cpus v1.16.0 [INFO] [stderr] Checking rand_core v0.6.4 [INFO] [stderr] Checking crossbeam-channel v0.5.8 [INFO] [stderr] Checking is-terminal v0.4.9 [INFO] [stderr] Checking rand_chacha v0.3.1 [INFO] [stderr] Checking anstream v0.3.2 [INFO] [stderr] Compiling quote v1.0.33 [INFO] [stderr] Checking rand v0.8.5 [INFO] [stderr] Checking crossbeam-deque v0.8.3 [INFO] [stderr] Compiling syn v2.0.29 [INFO] [stderr] Compiling syn v1.0.109 [INFO] [stderr] Checking clap_builder v4.3.23 [INFO] [stderr] Compiling toml_edit v0.19.14 [INFO] [stderr] Checking num-complex v0.4.4 [INFO] [stderr] Checking rand_distr v0.4.3 [INFO] [stderr] Checking approx v0.5.1 [INFO] [stderr] Checking rayon v1.7.0 [INFO] [stderr] Checking ndarray v0.15.6 [INFO] [stderr] Compiling proc-macro-crate v1.3.1 [INFO] [stderr] Compiling thiserror-impl v1.0.47 [INFO] [stderr] Compiling clap_derive v4.3.12 [INFO] [stderr] Compiling ntest_timeout v0.9.0 [INFO] [stderr] Compiling ntest_test_cases v0.9.0 [INFO] [stderr] Checking ntest v0.9.0 [INFO] [stderr] Compiling pest v2.7.2 [INFO] [stderr] Checking ndarray-rand v0.14.0 [INFO] [stderr] Checking clap v4.3.23 [INFO] [stderr] Compiling pest_meta v2.7.2 [INFO] [stderr] Compiling pest_generator v2.7.2 [INFO] [stderr] Compiling pest_derive v2.7.2 [INFO] [stderr] Checking cs220 v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: lint `pointer_structural_match` has been removed: converted into hard error, see RFC #3535 for more information [INFO] [stdout] --> src/lib.rs:13:9 [INFO] [stdout] | [INFO] [stdout] 13 | #![deny(pointer_structural_match)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(renamed_and_removed_lints)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] [INFO] [stderr] thread 'rustc' (1137) panicked at /rustc-dev/66388cc165a6c4ac98c074dc9f0281ff23528c55/compiler/rustc_ast/src/attr/mod.rs:302:36: [INFO] [stderr] attribute is missing tokens: Attribute { kind: Normal(NormalAttr { item: AttrItem { unsafety: Default, path: Path { span: src/assignments/assignment12/demux_grade.rs:11:5: 11:12 (#1400), segments: [PathSegment { ident: #1400, id: NodeId(4294967040), args: None }], tokens: None }, args: Unparsed(Empty), tokens: None }, tokens: None }), id: AttrId(2481), style: Outer, span: src/assignments/assignment12/demux_grade.rs:11:5: 11:12 (#1400) } [INFO] [stderr] stack backtrace: [INFO] [stderr] 0: 0x7dc6c642bfa3 - <::print::DisplayBacktrace as core[75ca2badb63c4514]::fmt::Display>::fmt [INFO] [stderr] 1: 0x7dc6c6a0fb48 - core[75ca2badb63c4514]::fmt::write [INFO] [stderr] 2: 0x7dc6c6442226 - ::write_fmt [INFO] [stderr] 3: 0x7dc6c6401b98 - std[7d609349af90bec6]::panicking::default_hook::{closure#0} [INFO] [stderr] 4: 0x7dc6c641f833 - std[7d609349af90bec6]::panicking::default_hook [INFO] [stderr] 5: 0x7dc6c540236a - std[7d609349af90bec6]::panicking::update_hook::>::{closure#0} [INFO] [stderr] 6: 0x7dc6c641fb12 - std[7d609349af90bec6]::panicking::panic_with_hook [INFO] [stderr] 7: 0x7dc6c6401c58 - std[7d609349af90bec6]::panicking::panic_handler::{closure#0} [INFO] [stderr] 8: 0x7dc6c63f89a9 - std[7d609349af90bec6]::sys::backtrace::__rust_end_short_backtrace:: [INFO] [stderr] 9: 0x7dc6c640372d - __rustc[69841a6cbc58d81d]::rust_begin_unwind [INFO] [stderr] 10: 0x7dc6c3038f9c - core[75ca2badb63c4514]::panicking::panic_fmt [INFO] [stderr] 11: 0x7dc6c77e0110 - ::token_trees [INFO] [stderr] 12: 0x7dc6c801c314 - ::fully_expand_fragment [INFO] [stderr] 13: 0x7dc6c7fe65d2 - ::expand_crate [INFO] [stderr] 14: 0x7dc6c70f0af3 - rustc_interface[903e43df8d6bd657]::passes::configure_and_expand [INFO] [stderr] 15: 0x7dc6c7c07658 - rustc_interface[903e43df8d6bd657]::passes::resolver_for_lowering_raw [INFO] [stderr] 16: 0x7dc6c7c073cd - rustc_query_impl[8c5349e00d64015e]::plumbing::__rust_begin_short_backtrace::> [INFO] [stderr] 17: 0x7dc6c7c073a7 - >::call_once [INFO] [stderr] 18: 0x7dc6c7becb5f - rustc_query_system[d45be4fb383a0235]::query::plumbing::try_execute_query::>, false, false, false>, rustc_query_impl[8c5349e00d64015e]::plumbing::QueryCtxt, false> [INFO] [stderr] 19: 0x7dc6c7bec6bc - rustc_query_impl[8c5349e00d64015e]::query_impl::resolver_for_lowering_raw::get_query_non_incr::__rust_end_short_backtrace [INFO] [stderr] 20: 0x7dc6c7d7127b - , rustc_driver_impl[3f9d6dd912ac34bd]::run_compiler::{closure#0}::{closure#2}>::{closure#2} as core[75ca2badb63c4514]::ops::function::FnOnce<(&rustc_session[1e6875ba352dc1ba]::session::Session, rustc_middle[2342951a64deba5]::ty::context::CurrentGcx, alloc[d7482eb0f1d19161]::sync::Arc, &std[7d609349af90bec6]::sync::once_lock::OnceLock, &rustc_data_structures[c82a87ce5cdbfc92]::sync::worker_local::WorkerLocal, &rustc_data_structures[c82a87ce5cdbfc92]::sync::worker_local::WorkerLocal, rustc_driver_impl[3f9d6dd912ac34bd]::run_compiler::{closure#0}::{closure#2})>>::call_once::{shim:vtable#0} [INFO] [stderr] 21: 0x7dc6c7c5ac98 - rustc_interface[903e43df8d6bd657]::interface::run_compiler::<(), rustc_driver_impl[3f9d6dd912ac34bd]::run_compiler::{closure#0}>::{closure#1} [INFO] [stderr] 22: 0x7dc6c7aeac4e - std[7d609349af90bec6]::sys::backtrace::__rust_begin_short_backtrace::::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()> [INFO] [stderr] 23: 0x7dc6c7aeaa20 - ::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>::{closure#1} as core[75ca2badb63c4514]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0} [INFO] [stderr] 24: 0x7dc6c7aed138 - ::new::thread_start [INFO] [stderr] 25: 0x7dc6c168aaa4 - [INFO] [stderr] 26: 0x7dc6c1717a64 - clone [INFO] [stderr] 27: 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-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/workdir/rustc-ice-2026-01-09T14_29_09-1131.txt`: Read-only file system (os error 30) [INFO] [stderr] [INFO] [stderr] note: rustc 1.94.0-nightly (66388cc16 2026-01-08) running on x86_64-unknown-linux-gnu [INFO] [stderr] [INFO] [stderr] note: compiler flags: -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 [resolver_for_lowering_raw] getting the resolver for lowering [INFO] [stderr] end of query stack [INFO] [stderr] error: could not compile `cs220` (lib test) [INFO] [stderr] [INFO] [stderr] Caused by: [INFO] [stderr] process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/66388cc165a6c4ac98c074dc9f0281ff23528c55/bin/rustc --crate-name cs220 --edition=2021 src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --emit=dep-info,metadata -C embed-bitcode=no -C debuginfo=2 --test --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values())' -C metadata=92b974c50840a0b3 -C extra-filename=-cfbf1c71f2bf75cc --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern anyhow=/opt/rustwide/target/debug/deps/libanyhow-66ceed51f19b012f.rmeta --extern approx=/opt/rustwide/target/debug/deps/libapprox-ec63f0ac72a5094e.rmeta --extern clap=/opt/rustwide/target/debug/deps/libclap-6f592026979ef7d1.rmeta --extern etrace=/opt/rustwide/target/debug/deps/libetrace-da9f1e9a28b6abb1.rmeta --extern itertools=/opt/rustwide/target/debug/deps/libitertools-cc6f61ea4b532133.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-3dcad08886afe173.rmeta --extern ndarray=/opt/rustwide/target/debug/deps/libndarray-9dd7d31bb631e2f2.rmeta --extern ndarray_rand=/opt/rustwide/target/debug/deps/libndarray_rand-c772820c70ca75f8.rmeta --extern ntest=/opt/rustwide/target/debug/deps/libntest-8646845af0075f6f.rmeta --extern num_traits=/opt/rustwide/target/debug/deps/libnum_traits-6d6bbe4266e4504d.rmeta --extern pest=/opt/rustwide/target/debug/deps/libpest-2113ba46657cd5e0.rmeta --extern pest_derive=/opt/rustwide/target/debug/deps/libpest_derive-fa5087b5acd881e3.so --extern rand=/opt/rustwide/target/debug/deps/librand-07a89f542bef7a0d.rmeta --extern rayon=/opt/rustwide/target/debug/deps/librayon-3573c7b500e6dde2.rmeta --extern thiserror=/opt/rustwide/target/debug/deps/libthiserror-2bf5612b7c80f3d7.rmeta --cap-lints=forbid` (exit status: 101) [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] running `Command { std: "docker" "inspect" "d315af6dfddee8b52559c85bc4baaea9d00816124ac09fe74ecb09a3713aac7b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d315af6dfddee8b52559c85bc4baaea9d00816124ac09fe74ecb09a3713aac7b", kill_on_drop: false }` [INFO] [stdout] d315af6dfddee8b52559c85bc4baaea9d00816124ac09fe74ecb09a3713aac7b