[INFO] fetching crate reduct-base 1.18.0... [INFO] checking reduct-base-1.18.0 against try#66388cc165a6c4ac98c074dc9f0281ff23528c55 for pr-150727 [INFO] extracting crate reduct-base 1.18.0 into /workspace/builds/worker-6-tc2/source [INFO] started tweaking crates.io crate reduct-base 1.18.0 [INFO] finished tweaking crates.io crate reduct-base 1.18.0 [INFO] tweaked toml for crates.io crate reduct-base 1.18.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate reduct-base 1.18.0 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 reduct-base 1.18.0 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" "+66388cc165a6c4ac98c074dc9f0281ff23528c55" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [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] 14cfc2d39d84ecb41c17fd4b74001d3373d4f39bd0f080ddb45188c921b83e8b [INFO] running `Command { std: "docker" "start" "-a" "14cfc2d39d84ecb41c17fd4b74001d3373d4f39bd0f080ddb45188c921b83e8b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "14cfc2d39d84ecb41c17fd4b74001d3373d4f39bd0f080ddb45188c921b83e8b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "14cfc2d39d84ecb41c17fd4b74001d3373d4f39bd0f080ddb45188c921b83e8b", kill_on_drop: false }` [INFO] [stdout] 14cfc2d39d84ecb41c17fd4b74001d3373d4f39bd0f080ddb45188c921b83e8b [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] 09293271572de8d915f4d3e36353ea739d7d3c044d4fcbe712c18029f5853acc [INFO] running `Command { std: "docker" "start" "-a" "09293271572de8d915f4d3e36353ea739d7d3c044d4fcbe712c18029f5853acc", kill_on_drop: false }` [INFO] [stderr] Compiling hashbrown v0.15.5 [INFO] [stderr] Compiling toml_datetime v0.6.11 [INFO] [stderr] Compiling syn v1.0.109 [INFO] [stderr] Compiling aho-corasick v1.1.3 [INFO] [stderr] Compiling regex-syntax v0.8.6 [INFO] [stderr] Compiling winnow v0.7.13 [INFO] [stderr] Compiling syn v2.0.110 [INFO] [stderr] Compiling rstest_macros v0.26.1 [INFO] [stderr] Compiling serde_json v1.0.145 [INFO] [stderr] Checking parking_lot_core v0.9.12 [INFO] [stderr] Checking indexmap v2.11.1 [INFO] [stderr] Compiling cfg-if v1.0.3 [INFO] [stderr] Checking sdd v3.0.10 [INFO] [stderr] Checking thread-id v5.0.0 [INFO] [stderr] Checking scc v2.4.0 [INFO] [stderr] Checking parking_lot v0.12.5 [INFO] [stderr] Compiling toml_edit v0.19.15 [INFO] [stderr] Compiling toml_edit v0.22.27 [INFO] [stderr] Compiling regex-automata v0.4.12 [INFO] [stderr] Compiling proc-macro-crate v3.3.0 [INFO] [stderr] Compiling proc-macro-crate v1.3.1 [INFO] [stderr] Compiling int-enum-impl v0.5.0 [INFO] [stderr] Compiling synstructure v0.13.2 [INFO] [stderr] Checking int-enum v0.5.0 [INFO] [stderr] Compiling zerofrom-derive v0.1.6 [INFO] [stderr] Compiling yoke-derive v0.8.0 [INFO] [stderr] Compiling zerovec-derive v0.11.1 [INFO] [stderr] Compiling displaydoc v0.2.5 [INFO] [stderr] Compiling futures-macro v0.3.31 [INFO] [stderr] Compiling serde_derive v1.0.228 [INFO] [stderr] Compiling serial_test_derive v3.2.0 [INFO] [stderr] Compiling regex v1.12.1 [INFO] [stderr] Checking futures-util v0.3.31 [INFO] [stderr] Checking zerofrom v0.1.6 [INFO] [stderr] Checking yoke v0.8.0 [INFO] [stderr] Checking zerovec v0.11.4 [INFO] [stderr] Checking zerotrie v0.2.2 [INFO] [stderr] Checking tinystr v0.8.1 [INFO] [stderr] Checking potential_utf v0.1.3 [INFO] [stderr] Checking icu_collections v2.0.0 [INFO] [stderr] Checking icu_locale_core v2.0.0 [INFO] [stderr] Checking serde v1.0.228 [INFO] [stderr] Checking icu_provider v2.0.0 [INFO] [stderr] Checking icu_properties v2.0.1 [INFO] [stderr] Checking icu_normalizer v2.0.0 [INFO] [stderr] Checking chrono v0.4.42 [INFO] [stderr] Checking idna_adapter v1.2.1 [INFO] [stderr] Checking futures-executor v0.3.31 [INFO] [stderr] Checking rstest v0.26.1 [INFO] [stderr] Checking futures v0.3.31 [INFO] [stderr] Checking idna v1.1.0 [INFO] [stderr] Checking serial_test v3.2.0 [INFO] [stderr] Checking url v2.5.7 [INFO] [stderr] Checking reduct-base v1.18.0 (/opt/rustwide/workdir) [INFO] [stderr] [INFO] [stderr] thread 'rustc' (826) 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/logger.rs:119:5: 119:12 (#446), segments: [PathSegment { ident: #446, id: NodeId(4294967040), args: None }], tokens: None }, args: Unparsed(Empty), tokens: None }, tokens: None }), id: AttrId(1212), style: Outer, span: src/logger.rs:119:5: 119:12 (#446) } [INFO] [stderr] stack backtrace: [INFO] [stderr] 0: 0x7e7fffe2bfa3 - <::print::DisplayBacktrace as core[75ca2badb63c4514]::fmt::Display>::fmt [INFO] [stderr] 1: 0x7e800040fb48 - core[75ca2badb63c4514]::fmt::write [INFO] [stderr] 2: 0x7e7fffe42226 - ::write_fmt [INFO] [stderr] 3: 0x7e7fffe01b98 - std[7d609349af90bec6]::panicking::default_hook::{closure#0} [INFO] [stderr] 4: 0x7e7fffe1f833 - std[7d609349af90bec6]::panicking::default_hook [INFO] [stderr] 5: 0x7e7ffee0236a - std[7d609349af90bec6]::panicking::update_hook::>::{closure#0} [INFO] [stderr] 6: 0x7e7fffe1fb12 - std[7d609349af90bec6]::panicking::panic_with_hook [INFO] [stderr] 7: 0x7e7fffe01c58 - std[7d609349af90bec6]::panicking::panic_handler::{closure#0} [INFO] [stderr] 8: 0x7e7fffdf89a9 - std[7d609349af90bec6]::sys::backtrace::__rust_end_short_backtrace:: [INFO] [stderr] 9: 0x7e7fffe0372d - __rustc[69841a6cbc58d81d]::rust_begin_unwind [INFO] [stderr] 10: 0x7e7ffca38f9c - core[75ca2badb63c4514]::panicking::panic_fmt [INFO] [stderr] 11: 0x7e80011e0110 - ::token_trees [INFO] [stderr] 12: 0x7e8001a1c314 - ::fully_expand_fragment [INFO] [stderr] 13: 0x7e80019e65d2 - ::expand_crate [INFO] [stderr] 14: 0x7e8000af0af3 - rustc_interface[903e43df8d6bd657]::passes::configure_and_expand [INFO] [stderr] 15: 0x7e8001607658 - rustc_interface[903e43df8d6bd657]::passes::resolver_for_lowering_raw [INFO] [stderr] 16: 0x7e80016073cd - rustc_query_impl[8c5349e00d64015e]::plumbing::__rust_begin_short_backtrace::> [INFO] [stderr] 17: 0x7e80016073a7 - >::call_once [INFO] [stderr] 18: 0x7e80015ecb5f - rustc_query_system[d45be4fb383a0235]::query::plumbing::try_execute_query::>, false, false, false>, rustc_query_impl[8c5349e00d64015e]::plumbing::QueryCtxt, false> [INFO] [stderr] 19: 0x7e80015ec6bc - rustc_query_impl[8c5349e00d64015e]::query_impl::resolver_for_lowering_raw::get_query_non_incr::__rust_end_short_backtrace [INFO] [stderr] 20: 0x7e800177127b - , 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: 0x7e800165ac98 - rustc_interface[903e43df8d6bd657]::interface::run_compiler::<(), rustc_driver_impl[3f9d6dd912ac34bd]::run_compiler::{closure#0}>::{closure#1} [INFO] [stderr] 22: 0x7e80014eac4e - std[7d609349af90bec6]::sys::backtrace::__rust_begin_short_backtrace::::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()> [INFO] [stderr] 23: 0x7e80014eaa20 - ::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>::{closure#1} as core[75ca2badb63c4514]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0} [INFO] [stderr] 24: 0x7e80014ed138 - ::new::thread_start [INFO] [stderr] 25: 0x7e7ffb08aaa4 - [INFO] [stderr] 26: 0x7e7ffb117a64 - 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-2026-01-08T21_59_34-820.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 `reduct-base` (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 reduct_base --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 --cfg 'feature="default"' --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values("all", "default", "ext", "io"))' -C metadata=ef7cad97577ed6ab -C extra-filename=-a7262984252d4eea --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern bytes=/opt/rustwide/target/debug/deps/libbytes-696d9749778e1593.rmeta --extern chrono=/opt/rustwide/target/debug/deps/libchrono-f7a54e357648627b.rmeta --extern futures=/opt/rustwide/target/debug/deps/libfutures-e5508b74a23c2813.rmeta --extern http=/opt/rustwide/target/debug/deps/libhttp-28a8fa56a339b838.rmeta --extern int_enum=/opt/rustwide/target/debug/deps/libint_enum-2bf5ddf7accce37e.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-f0efc98faf8f1763.rmeta --extern rstest=/opt/rustwide/target/debug/deps/librstest-83f119f25f10dc66.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-8bfcf6a478fef3c1.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-8ce5e83700dc77eb.rmeta --extern serial_test=/opt/rustwide/target/debug/deps/libserial_test-b8cc336b59f44057.rmeta --extern thread_id=/opt/rustwide/target/debug/deps/libthread_id-017700173e169ca5.rmeta --extern url=/opt/rustwide/target/debug/deps/liburl-59f6c9092bf209b4.rmeta --cap-lints=forbid` (exit status: 101) [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] running `Command { std: "docker" "inspect" "09293271572de8d915f4d3e36353ea739d7d3c044d4fcbe712c18029f5853acc", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "09293271572de8d915f4d3e36353ea739d7d3c044d4fcbe712c18029f5853acc", kill_on_drop: false }` [INFO] [stdout] 09293271572de8d915f4d3e36353ea739d7d3c044d4fcbe712c18029f5853acc