[INFO] fetching crate epics-ca 0.1.2... [INFO] checking epics-ca-0.1.2 against try#66388cc165a6c4ac98c074dc9f0281ff23528c55 for pr-150727 [INFO] extracting crate epics-ca 0.1.2 into /workspace/builds/worker-2-tc2/source [INFO] started tweaking crates.io crate epics-ca 0.1.2 [INFO] finished tweaking crates.io crate epics-ca 0.1.2 [INFO] tweaked toml for crates.io crate epics-ca 0.1.2 written to /workspace/builds/worker-2-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate epics-ca 0.1.2 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 epics-ca 0.1.2 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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 848b11eb156b5e1224185a3c585415d74399c2cdae66fe2f6dac718f73d87dba [INFO] running `Command { std: "docker" "start" "-a" "848b11eb156b5e1224185a3c585415d74399c2cdae66fe2f6dac718f73d87dba", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "848b11eb156b5e1224185a3c585415d74399c2cdae66fe2f6dac718f73d87dba", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "848b11eb156b5e1224185a3c585415d74399c2cdae66fe2f6dac718f73d87dba", kill_on_drop: false }` [INFO] [stdout] 848b11eb156b5e1224185a3c585415d74399c2cdae66fe2f6dac718f73d87dba [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 420b9058b6d1ab7a0f07e4048495bb164fbb2af04d3dc37e3868ee2336621ea6 [INFO] running `Command { std: "docker" "start" "-a" "420b9058b6d1ab7a0f07e4048495bb164fbb2af04d3dc37e3868ee2336621ea6", kill_on_drop: false }` [INFO] [stderr] Compiling quote v1.0.33 [INFO] [stderr] Compiling libc v0.2.147 [INFO] [stderr] Checking futures-io v0.3.28 [INFO] [stderr] Checking pin-project-lite v0.2.12 [INFO] [stderr] Compiling crossbeam-utils v0.8.16 [INFO] [stderr] Checking value-bag v1.4.1 [INFO] [stderr] Compiling futures-channel v0.3.28 [INFO] [stderr] Checking futures-sink v0.3.28 [INFO] [stderr] Checking waker-fn v1.1.0 [INFO] [stderr] Checking parking v2.1.0 [INFO] [stderr] Compiling futures-util v0.3.28 [INFO] [stderr] Compiling syn v2.0.29 [INFO] [stderr] Compiling syn v1.0.109 [INFO] [stderr] Checking log v0.4.20 [INFO] [stderr] Checking futures-lite v1.13.0 [INFO] [stderr] Compiling polling v2.8.0 [INFO] [stderr] Compiling rustix v0.37.23 [INFO] [stderr] Compiling async-io v1.13.0 [INFO] [stderr] Checking async-task v4.4.0 [INFO] [stderr] Checking concurrent-queue v2.2.0 [INFO] [stderr] Compiling proc-macro-error-attr v1.0.4 [INFO] [stderr] Compiling epics-ca-sys v0.1.1 [INFO] [stderr] Checking io-lifetimes v1.0.11 [INFO] [stderr] Checking async-channel v1.9.0 [INFO] [stderr] Checking parking_lot_core v0.9.8 [INFO] [stderr] Checking socket2 v0.4.9 [INFO] [stderr] Checking hashbrown v0.14.0 [INFO] [stderr] Checking chrono v0.4.26 [INFO] [stderr] Checking parking_lot v0.12.1 [INFO] [stderr] Checking dashmap v5.5.1 [INFO] [stderr] Checking async-executor v1.5.1 [INFO] [stderr] Checking blocking v1.3.1 [INFO] [stderr] Checking kv-log-macro v1.0.7 [INFO] [stderr] Compiling cstr v0.2.11 [INFO] [stderr] Checking async-global-executor v2.3.1 [INFO] [stderr] Compiling futures-macro v0.3.28 [INFO] [stderr] Compiling pin-project-internal v1.1.3 [INFO] [stderr] Compiling proc-macro-error v1.0.4 [INFO] [stderr] Compiling async-attributes v1.1.2 [INFO] [stderr] Compiling derivative v2.2.0 [INFO] [stderr] Compiling serial_test_derive v0.9.0 [INFO] [stderr] Compiling derive_more v0.99.17 [INFO] [stderr] Checking async-std v1.12.0 [INFO] [stderr] Checking pin-project v1.1.3 [INFO] [stderr] Checking futures-executor v0.3.28 [INFO] [stderr] Checking futures v0.3.28 [INFO] [stderr] Checking serial_test v0.9.0 [INFO] [stderr] Checking epics-ca v0.1.2 (/opt/rustwide/workdir) [INFO] [stderr] [INFO] [stderr] thread 'rustc' (665) 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/channel/base.rs:234:5: 234:18 (#29), segments: [PathSegment { ident: #29, id: NodeId(4294967040), args: None }], tokens: None }, args: Unparsed(Empty), tokens: None }, tokens: None }), id: AttrId(331), style: Outer, span: src/channel/base.rs:234:5: 234:18 (#29) } [INFO] [stderr] stack backtrace: [INFO] [stderr] 0: 0x7382e3a2bfa3 - <::print::DisplayBacktrace as core[75ca2badb63c4514]::fmt::Display>::fmt [INFO] [stderr] 1: 0x7382e400fb48 - core[75ca2badb63c4514]::fmt::write [INFO] [stderr] 2: 0x7382e3a42226 - ::write_fmt [INFO] [stderr] 3: 0x7382e3a01b98 - std[7d609349af90bec6]::panicking::default_hook::{closure#0} [INFO] [stderr] 4: 0x7382e3a1f833 - std[7d609349af90bec6]::panicking::default_hook [INFO] [stderr] 5: 0x7382e2a0236a - std[7d609349af90bec6]::panicking::update_hook::>::{closure#0} [INFO] [stderr] 6: 0x7382e3a1fb12 - std[7d609349af90bec6]::panicking::panic_with_hook [INFO] [stderr] 7: 0x7382e3a01c58 - std[7d609349af90bec6]::panicking::panic_handler::{closure#0} [INFO] [stderr] 8: 0x7382e39f89a9 - std[7d609349af90bec6]::sys::backtrace::__rust_end_short_backtrace:: [INFO] [stderr] 9: 0x7382e3a0372d - __rustc[69841a6cbc58d81d]::rust_begin_unwind [INFO] [stderr] 10: 0x7382e0638f9c - core[75ca2badb63c4514]::panicking::panic_fmt [INFO] [stderr] 11: 0x7382e4de0110 - ::token_trees [INFO] [stderr] 12: 0x7382e561c314 - ::fully_expand_fragment [INFO] [stderr] 13: 0x7382e55e65d2 - ::expand_crate [INFO] [stderr] 14: 0x7382e46f0af3 - rustc_interface[903e43df8d6bd657]::passes::configure_and_expand [INFO] [stderr] 15: 0x7382e5207658 - rustc_interface[903e43df8d6bd657]::passes::resolver_for_lowering_raw [INFO] [stderr] 16: 0x7382e52073cd - rustc_query_impl[8c5349e00d64015e]::plumbing::__rust_begin_short_backtrace::> [INFO] [stderr] 17: 0x7382e52073a7 - >::call_once [INFO] [stderr] 18: 0x7382e51ecb5f - rustc_query_system[d45be4fb383a0235]::query::plumbing::try_execute_query::>, false, false, false>, rustc_query_impl[8c5349e00d64015e]::plumbing::QueryCtxt, false> [INFO] [stderr] 19: 0x7382e51ec6bc - rustc_query_impl[8c5349e00d64015e]::query_impl::resolver_for_lowering_raw::get_query_non_incr::__rust_end_short_backtrace [INFO] [stderr] 20: 0x7382e537127b - , 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: 0x7382e525ac98 - rustc_interface[903e43df8d6bd657]::interface::run_compiler::<(), rustc_driver_impl[3f9d6dd912ac34bd]::run_compiler::{closure#0}>::{closure#1} [INFO] [stderr] 22: 0x7382e50eac4e - std[7d609349af90bec6]::sys::backtrace::__rust_begin_short_backtrace::::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()> [INFO] [stderr] 23: 0x7382e50eaa20 - ::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>::{closure#1} as core[75ca2badb63c4514]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0} [INFO] [stderr] 24: 0x7382e50ed138 - ::new::thread_start [INFO] [stderr] 25: 0x7382dec8aaa4 - [INFO] [stderr] 26: 0x7382ded17a64 - 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-2026-01-08T18_39_49-663.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 `epics-ca` (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 epics_ca --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=0d9dcb6bbd126338 -C extra-filename=-b16e44d22147f590 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern async_std=/opt/rustwide/target/debug/deps/libasync_std-815f334f0b427050.rmeta --extern bitflags=/opt/rustwide/target/debug/deps/libbitflags-6dcfbc6bad33d8b2.rmeta --extern chrono=/opt/rustwide/target/debug/deps/libchrono-3d63f72bc2ff22ee.rmeta --extern cstr=/opt/rustwide/target/debug/deps/libcstr-ec44289431410649.so --extern derivative=/opt/rustwide/target/debug/deps/libderivative-107aecdaa3b6e32f.so --extern derive_more=/opt/rustwide/target/debug/deps/libderive_more-2ca9766a1299e31b.so --extern sys=/opt/rustwide/target/debug/deps/libepics_ca_sys-8cfdd594c7d553fb.rmeta --extern futures=/opt/rustwide/target/debug/deps/libfutures-7767009fbf2ee10e.rmeta --extern pin_project=/opt/rustwide/target/debug/deps/libpin_project-1584aa1971fda9e6.rmeta --extern serial_test=/opt/rustwide/target/debug/deps/libserial_test-569495b522a1f1ea.rmeta --cap-lints=forbid` (exit status: 101) [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] warning: unused return value of `Box::::from_raw` that must be used [INFO] [stdout] --> src/channel/base.rs:58:30 [INFO] [stdout] | [INFO] [stdout] 58 | unsafe { Box::from_raw(puser) }; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: call `drop(Box::from_raw(ptr))` if you intend to drop the `Box` [INFO] [stdout] = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 58 | unsafe { let _ = Box::from_raw(puser); }; [INFO] [stdout] | +++++++ + [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `Box::::from_raw` that must be used [INFO] [stdout] --> src/channel/base.rs:118:22 [INFO] [stdout] | [INFO] [stdout] 118 | unsafe { Box::from_raw(puser) }; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: call `drop(Box::from_raw(ptr))` if you intend to drop the `Box` [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 118 | unsafe { let _ = Box::from_raw(puser); }; [INFO] [stdout] | +++++++ + [INFO] [stdout] [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "420b9058b6d1ab7a0f07e4048495bb164fbb2af04d3dc37e3868ee2336621ea6", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "420b9058b6d1ab7a0f07e4048495bb164fbb2af04d3dc37e3868ee2336621ea6", kill_on_drop: false }` [INFO] [stdout] 420b9058b6d1ab7a0f07e4048495bb164fbb2af04d3dc37e3868ee2336621ea6