[INFO] fetching crate cecs 0.1.8... [INFO] checking cecs-0.1.8 against try#66388cc165a6c4ac98c074dc9f0281ff23528c55 for pr-150727 [INFO] extracting crate cecs 0.1.8 into /workspace/builds/worker-6-tc2/source [INFO] removed /workspace/builds/worker-6-tc2/source/rust-toolchain.toml [INFO] started tweaking crates.io crate cecs 0.1.8 [INFO] finished tweaking crates.io crate cecs 0.1.8 [INFO] tweaked toml for crates.io crate cecs 0.1.8 written to /workspace/builds/worker-6-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate cecs 0.1.8 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 crates.io crate cecs 0.1.8 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] [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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] f329dcb541bd1647e764d56bbbb4d8d0b4468573b97e28fde3244ad355ca5930 [INFO] running `Command { std: "docker" "start" "-a" "f329dcb541bd1647e764d56bbbb4d8d0b4468573b97e28fde3244ad355ca5930", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "f329dcb541bd1647e764d56bbbb4d8d0b4468573b97e28fde3244ad355ca5930", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f329dcb541bd1647e764d56bbbb4d8d0b4468573b97e28fde3244ad355ca5930", kill_on_drop: false }` [INFO] [stdout] f329dcb541bd1647e764d56bbbb4d8d0b4468573b97e28fde3244ad355ca5930 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] c80d1fb8eb892b7831889c3265d9632a07eff70933cf32294f6600f60670dc0a [INFO] running `Command { std: "docker" "start" "-a" "c80d1fb8eb892b7831889c3265d9632a07eff70933cf32294f6600f60670dc0a", kill_on_drop: false }` [INFO] [stderr] Compiling syn v2.0.101 [INFO] [stderr] Compiling serde_core v1.0.227 [INFO] [stderr] Compiling serde v1.0.227 [INFO] [stderr] Checking tracing-core v0.1.32 [INFO] [stderr] Checking regex-syntax v0.8.5 [INFO] [stderr] Compiling libc v0.2.171 [INFO] [stderr] Checking smallvec v1.14.0 [INFO] [stderr] Compiling lock_api v0.4.13 [INFO] [stderr] Compiling num-traits v0.2.19 [INFO] [stderr] Compiling parking_lot_core v0.9.11 [INFO] [stderr] Compiling serde_json v1.0.140 [INFO] [stderr] Checking half v2.4.1 [INFO] [stderr] Checking anstyle v1.0.10 [INFO] [stderr] Checking clap_lex v0.7.4 [INFO] [stderr] Checking overload v0.1.1 [INFO] [stderr] Checking log v0.4.27 [INFO] [stderr] Checking memchr v2.7.4 [INFO] [stderr] Checking clap_builder v4.5.30 [INFO] [stderr] Checking tracing-log v0.2.0 [INFO] [stderr] Checking nu-ansi-term v0.46.0 [INFO] [stderr] Checking ciborium-ll v0.2.2 [INFO] [stderr] Checking matchers v0.1.0 [INFO] [stderr] Checking itertools v0.10.5 [INFO] [stderr] Checking futures-lite v2.6.0 [INFO] [stderr] Checking parking_lot v0.12.4 [INFO] [stderr] Checking rayon v1.10.0 [INFO] [stderr] Checking plotters v0.3.7 [INFO] [stderr] Checking regex-automata v0.4.9 [INFO] [stderr] Checking itertools v0.13.0 [INFO] [stderr] Checking clap v4.5.30 [INFO] [stderr] Checking cache-padded v1.3.0 [INFO] [stderr] Checking oorandom v11.1.4 [INFO] [stderr] Checking criterion-plot v0.5.0 [INFO] [stderr] Checking semver v1.0.27 [INFO] [stderr] Checking regex v1.11.1 [INFO] [stderr] Compiling serde_derive v1.0.227 [INFO] [stderr] Compiling tracing-attributes v0.1.27 [INFO] [stderr] Compiling thiserror-impl v2.0.12 [INFO] [stderr] Compiling tracing-test-macro v0.2.5 [INFO] [stderr] Checking tracing v0.1.40 [INFO] [stderr] Checking tracing-subscriber v0.3.18 [INFO] [stderr] Checking thiserror v2.0.12 [INFO] [stderr] Checking tracing-test v0.2.5 [INFO] [stderr] Checking ciborium v0.2.2 [INFO] [stderr] Checking bincode v1.3.3 [INFO] [stderr] Checking cecs v0.1.8 (/opt/rustwide/workdir) [INFO] [stderr] Checking tinytemplate v1.2.1 [INFO] [stderr] Checking criterion v0.6.0 [INFO] [stderr] [INFO] [stderr] thread 'rustc' (544) 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/serde.rs:558:5: 558:12 (#1636), segments: [PathSegment { ident: #1636, id: NodeId(4294967040), args: None }], tokens: None }, args: Unparsed(Empty), tokens: None }, tokens: None }), id: AttrId(1116), style: Outer, span: src/serde.rs:558:5: 558:12 (#1636) } [INFO] [stderr] stack backtrace: [INFO] [stderr] 0: 0x7159b2e2bfa3 - <::print::DisplayBacktrace as core[75ca2badb63c4514]::fmt::Display>::fmt [INFO] [stderr] 1: 0x7159b340fb48 - core[75ca2badb63c4514]::fmt::write [INFO] [stderr] 2: 0x7159b2e42226 - ::write_fmt [INFO] [stderr] 3: 0x7159b2e01b98 - std[7d609349af90bec6]::panicking::default_hook::{closure#0} [INFO] [stderr] 4: 0x7159b2e1f833 - std[7d609349af90bec6]::panicking::default_hook [INFO] [stderr] 5: 0x7159b1e0236a - std[7d609349af90bec6]::panicking::update_hook::>::{closure#0} [INFO] [stderr] 6: 0x7159b2e1fb12 - std[7d609349af90bec6]::panicking::panic_with_hook [INFO] [stderr] 7: 0x7159b2e01c58 - std[7d609349af90bec6]::panicking::panic_handler::{closure#0} [INFO] [stderr] 8: 0x7159b2df89a9 - std[7d609349af90bec6]::sys::backtrace::__rust_end_short_backtrace:: [INFO] [stderr] 9: 0x7159b2e0372d - __rustc[69841a6cbc58d81d]::rust_begin_unwind [INFO] [stderr] 10: 0x7159afa38f9c - core[75ca2badb63c4514]::panicking::panic_fmt [INFO] [stderr] 11: 0x7159b41e0110 - ::token_trees [INFO] [stderr] 12: 0x7159b4a1c314 - ::fully_expand_fragment [INFO] [stderr] 13: 0x7159b49e65d2 - ::expand_crate [INFO] [stderr] 14: 0x7159b3af0af3 - rustc_interface[903e43df8d6bd657]::passes::configure_and_expand [INFO] [stderr] 15: 0x7159b4607658 - rustc_interface[903e43df8d6bd657]::passes::resolver_for_lowering_raw [INFO] [stderr] 16: 0x7159b46073cd - rustc_query_impl[8c5349e00d64015e]::plumbing::__rust_begin_short_backtrace::> [INFO] [stderr] 17: 0x7159b46073a7 - >::call_once [INFO] [stderr] 18: 0x7159b45ecb5f - rustc_query_system[d45be4fb383a0235]::query::plumbing::try_execute_query::>, false, false, false>, rustc_query_impl[8c5349e00d64015e]::plumbing::QueryCtxt, false> [INFO] [stderr] 19: 0x7159b45ec6bc - rustc_query_impl[8c5349e00d64015e]::query_impl::resolver_for_lowering_raw::get_query_non_incr::__rust_end_short_backtrace [INFO] [stderr] 20: 0x7159b477127b - , 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: 0x7159b465ac98 - rustc_interface[903e43df8d6bd657]::interface::run_compiler::<(), rustc_driver_impl[3f9d6dd912ac34bd]::run_compiler::{closure#0}>::{closure#1} [INFO] [stderr] 22: 0x7159b44eac4e - std[7d609349af90bec6]::sys::backtrace::__rust_begin_short_backtrace::::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()> [INFO] [stderr] 23: 0x7159b44eaa20 - ::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>::{closure#1} as core[75ca2badb63c4514]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0} [INFO] [stderr] 24: 0x7159b44ed138 - ::new::thread_start [INFO] [stderr] 25: 0x7159ae08aaa4 - [INFO] [stderr] 26: 0x7159ae117a64 - 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-2026-01-08T17_43_03-542.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 `cecs` (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 cecs --edition=2024 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 --cfg 'feature="clone"' --cfg 'feature="default"' --cfg 'feature="parallel"' --cfg 'feature="serde"' --cfg 'feature="tracing"' --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values("clone", "default", "parallel", "serde", "tracing"))' -C metadata=6ab3f222924deea0 -C extra-filename=-0e95e5735dad0ffc --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern bincode=/opt/rustwide/target/debug/deps/libbincode-607924cb7a6f4c05.rmeta --extern cache_padded=/opt/rustwide/target/debug/deps/libcache_padded-4f52330bc6f32e57.rmeta --extern cfg_if=/opt/rustwide/target/debug/deps/libcfg_if-d541ac7a75168aa5.rmeta --extern criterion=/opt/rustwide/target/debug/deps/libcriterion-e0c5871b250557bc.rmeta --extern crossbeam_deque=/opt/rustwide/target/debug/deps/libcrossbeam_deque-fdad849b02bfa1ea.rmeta --extern fastrand=/opt/rustwide/target/debug/deps/libfastrand-a6b04798eb47a00f.rmeta --extern futures_lite=/opt/rustwide/target/debug/deps/libfutures_lite-7c1bd191afe3e52a.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-cb8ca6aa8c56979f.rmeta --extern parking_lot=/opt/rustwide/target/debug/deps/libparking_lot-c2f89c0dfb4531d9.rmeta --extern rustc_hash=/opt/rustwide/target/debug/deps/librustc_hash-0bb3a5e14e8504c6.rmeta --extern semver=/opt/rustwide/target/debug/deps/libsemver-bd0c30954d945a95.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-41204dddf44b426b.rmeta --extern serde_derive=/opt/rustwide/target/debug/deps/libserde_derive-012b01e1e8e23bc2.so --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-b6cb76a3a9dba0f1.rmeta --extern smallvec=/opt/rustwide/target/debug/deps/libsmallvec-2e1317ef1e0b4408.rmeta --extern thiserror=/opt/rustwide/target/debug/deps/libthiserror-0eb4839b490620d3.rmeta --extern tracing=/opt/rustwide/target/debug/deps/libtracing-5a6c40cfc1a0e64e.rmeta --extern tracing_test=/opt/rustwide/target/debug/deps/libtracing_test-09f228c4d965a5bd.rmeta --cap-lints=forbid` (exit status: 101) [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] running `Command { std: "docker" "inspect" "c80d1fb8eb892b7831889c3265d9632a07eff70933cf32294f6600f60670dc0a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c80d1fb8eb892b7831889c3265d9632a07eff70933cf32294f6600f60670dc0a", kill_on_drop: false }` [INFO] [stdout] c80d1fb8eb892b7831889c3265d9632a07eff70933cf32294f6600f60670dc0a