[INFO] fetching crate cao-lang 0.2.6... [INFO] checking cao-lang-0.2.6 against try#66388cc165a6c4ac98c074dc9f0281ff23528c55 for pr-150727 [INFO] extracting crate cao-lang 0.2.6 into /workspace/builds/worker-7-tc2/source [INFO] started tweaking crates.io crate cao-lang 0.2.6 [INFO] removed 0 missing tests [INFO] finished tweaking crates.io crate cao-lang 0.2.6 [INFO] tweaked toml for crates.io crate cao-lang 0.2.6 written to /workspace/builds/worker-7-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate cao-lang 0.2.6 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 cao-lang 0.2.6 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] 93bdd3e56d56c2fa4b25ea30e6b5598a61145f49d7af2e97d21181b3199e7a52 [INFO] running `Command { std: "docker" "start" "-a" "93bdd3e56d56c2fa4b25ea30e6b5598a61145f49d7af2e97d21181b3199e7a52", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "93bdd3e56d56c2fa4b25ea30e6b5598a61145f49d7af2e97d21181b3199e7a52", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "93bdd3e56d56c2fa4b25ea30e6b5598a61145f49d7af2e97d21181b3199e7a52", kill_on_drop: false }` [INFO] [stdout] 93bdd3e56d56c2fa4b25ea30e6b5598a61145f49d7af2e97d21181b3199e7a52 [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] 04c2d055b8d16d964aca2a53ade797be3ea57b89810c05612551c8bcf5380bb0 [INFO] running `Command { std: "docker" "start" "-a" "04c2d055b8d16d964aca2a53ade797be3ea57b89810c05612551c8bcf5380bb0", kill_on_drop: false }` [INFO] [stderr] Compiling syn v2.0.98 [INFO] [stderr] Compiling serde v1.0.217 [INFO] [stderr] Checking once_cell v1.20.3 [INFO] [stderr] Checking regex-syntax v0.8.5 [INFO] [stderr] Checking aho-corasick v1.1.3 [INFO] [stderr] Compiling winnow v0.7.1 [INFO] [stderr] Checking either v1.13.0 [INFO] [stderr] Compiling serde_json v1.0.138 [INFO] [stderr] Compiling libc v0.2.169 [INFO] [stderr] Checking clap_builder v4.5.27 [INFO] [stderr] Checking tracing-core v0.1.33 [INFO] [stderr] Checking itertools v0.10.5 [INFO] [stderr] Checking tracing v0.1.41 [INFO] [stderr] Checking tracing-log v0.2.0 [INFO] [stderr] Checking thread_local v1.1.8 [INFO] [stderr] Checking indexmap v2.7.1 [INFO] [stderr] Checking anstream v0.6.18 [INFO] [stderr] Checking is-terminal v0.4.15 [INFO] [stderr] Checking rayon v1.10.0 [INFO] [stderr] Checking unsafe-libyaml v0.2.11 [INFO] [stderr] Checking regex-automata v0.4.9 [INFO] [stderr] Checking clap v4.5.28 [INFO] [stderr] Checking criterion-plot v0.5.0 [INFO] [stderr] Compiling serde_derive v1.0.217 [INFO] [stderr] Compiling bytemuck_derive v1.8.1 [INFO] [stderr] Compiling thiserror-impl v2.0.11 [INFO] [stderr] Compiling tracing-test-macro v0.2.5 [INFO] [stderr] Checking regex v1.11.1 [INFO] [stderr] Checking env_filter v0.1.3 [INFO] [stderr] Checking env_logger v0.11.6 [INFO] [stderr] Checking thiserror v2.0.11 [INFO] [stderr] Checking bytemuck v1.21.0 [INFO] [stderr] Compiling toml_datetime v0.6.8 [INFO] [stderr] Compiling serde_spanned v0.6.8 [INFO] [stderr] Checking smallvec v1.13.2 [INFO] [stderr] Checking ciborium v0.2.2 [INFO] [stderr] Checking arrayvec v0.7.6 [INFO] [stderr] Checking bincode v1.3.3 [INFO] [stderr] Checking serde_yaml v0.9.34+deprecated [INFO] [stderr] Compiling toml_edit v0.22.23 [INFO] [stderr] Checking tracing-subscriber v0.3.19 [INFO] [stderr] Checking tinytemplate v1.2.1 [INFO] [stderr] Checking criterion v0.5.1 [INFO] [stderr] Checking tracing-test v0.2.5 [INFO] [stderr] Compiling proc-macro-crate v3.2.0 [INFO] [stderr] Compiling num_enum_derive v0.7.3 [INFO] [stderr] Checking num_enum v0.7.3 [INFO] [stderr] Checking cao-lang v0.2.6 (/opt/rustwide/workdir) [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/collections/handle_table.rs:297:18 [INFO] [stdout] | [INFO] [stdout] 297 | pub fn entry(&mut self, key: Handle) -> Entry { [INFO] [stdout] | ^^^^^^^^^ ^^^^^^^^ the same lifetime is hidden here [INFO] [stdout] | | [INFO] [stdout] | the lifetime is elided here [INFO] [stdout] | [INFO] [stdout] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [INFO] [stdout] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stdout] help: use `'_` for type paths [INFO] [stdout] | [INFO] [stdout] 297 | pub fn entry(&mut self, key: Handle) -> Entry<'_, T> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/collections/hash_map.rs:452:18 [INFO] [stdout] | [INFO] [stdout] 452 | pub fn entry(&mut self, key: K) -> Result, MapError> [INFO] [stdout] | ^^^^^^^^^ ^^^^^^^^^^^ the same lifetime is hidden here [INFO] [stdout] | | [INFO] [stdout] | the lifetime is elided here [INFO] [stdout] | [INFO] [stdout] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [INFO] [stdout] help: use `'_` for type paths [INFO] [stdout] | [INFO] [stdout] 452 | pub fn entry(&mut self, key: K) -> Result, MapError> [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] [INFO] [stderr] thread 'rustc' (519) 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: tests/integration_tests.rs:1241:1: 1241:8 (#174), segments: [PathSegment { ident: #174, id: NodeId(4294967040), args: None }], tokens: None }, args: Unparsed(Empty), tokens: None }, tokens: None }), id: AttrId(219), style: Outer, span: tests/integration_tests.rs:1241:1: 1241:8 (#174) } [INFO] [stderr] stack backtrace: [INFO] [stderr] 0: 0x7af721c2bfa3 - <::print::DisplayBacktrace as core[75ca2badb63c4514]::fmt::Display>::fmt [INFO] [stderr] 1: 0x7af72220fb48 - core[75ca2badb63c4514]::fmt::write [INFO] [stderr] 2: 0x7af721c42226 - ::write_fmt [INFO] [stderr] 3: 0x7af721c01b98 - std[7d609349af90bec6]::panicking::default_hook::{closure#0} [INFO] [stderr] 4: 0x7af721c1f833 - std[7d609349af90bec6]::panicking::default_hook [INFO] [stderr] 5: 0x7af720c0236a - std[7d609349af90bec6]::panicking::update_hook::>::{closure#0} [INFO] [stderr] 6: 0x7af721c1fb12 - std[7d609349af90bec6]::panicking::panic_with_hook [INFO] [stderr] 7: 0x7af721c01c58 - std[7d609349af90bec6]::panicking::panic_handler::{closure#0} [INFO] [stderr] 8: 0x7af721bf89a9 - std[7d609349af90bec6]::sys::backtrace::__rust_end_short_backtrace:: [INFO] [stderr] 9: 0x7af721c0372d - __rustc[69841a6cbc58d81d]::rust_begin_unwind [INFO] [stderr] 10: 0x7af71e838f9c - core[75ca2badb63c4514]::panicking::panic_fmt [INFO] [stderr] 11: 0x7af722fe0110 - ::token_trees [INFO] [stderr] 12: 0x7af72381c314 - ::fully_expand_fragment [INFO] [stderr] 13: 0x7af7237e65d2 - ::expand_crate [INFO] [stderr] 14: 0x7af7228f0af3 - rustc_interface[903e43df8d6bd657]::passes::configure_and_expand [INFO] [stderr] 15: 0x7af723407658 - rustc_interface[903e43df8d6bd657]::passes::resolver_for_lowering_raw [INFO] [stderr] 16: 0x7af7234073cd - rustc_query_impl[8c5349e00d64015e]::plumbing::__rust_begin_short_backtrace::> [INFO] [stderr] 17: 0x7af7234073a7 - >::call_once [INFO] [stderr] 18: 0x7af7233ecb5f - rustc_query_system[d45be4fb383a0235]::query::plumbing::try_execute_query::>, false, false, false>, rustc_query_impl[8c5349e00d64015e]::plumbing::QueryCtxt, false> [INFO] [stderr] 19: 0x7af7233ec6bc - rustc_query_impl[8c5349e00d64015e]::query_impl::resolver_for_lowering_raw::get_query_non_incr::__rust_end_short_backtrace [INFO] [stderr] 20: 0x7af72357127b - , 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: 0x7af72345ac98 - rustc_interface[903e43df8d6bd657]::interface::run_compiler::<(), rustc_driver_impl[3f9d6dd912ac34bd]::run_compiler::{closure#0}>::{closure#1} [INFO] [stderr] 22: 0x7af7232eac4e - std[7d609349af90bec6]::sys::backtrace::__rust_begin_short_backtrace::::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()> [INFO] [stderr] 23: 0x7af7232eaa20 - ::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>::{closure#1} as core[75ca2badb63c4514]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0} [INFO] [stderr] 24: 0x7af7232ed138 - ::new::thread_start [INFO] [stderr] 25: 0x7af71ce8aaa4 - [INFO] [stderr] 26: 0x7af71cf17a64 - 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_34_45-507.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 `cao-lang` (test "integration_tests") [INFO] [stderr] [INFO] [stderr] Caused by: [INFO] [stderr] process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/66388cc165a6c4ac98c074dc9f0281ff23528c55/bin/rustc --crate-name integration_tests --edition=2021 tests/integration_tests.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"' --cfg 'feature="serde"' --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values("default", "serde"))' -C metadata=baa8fe34ad39dce9 -C extra-filename=-02f2af3a0bd23f29 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern arrayvec=/opt/rustwide/target/debug/deps/libarrayvec-7f2c50da1970e085.rmeta --extern bincode=/opt/rustwide/target/debug/deps/libbincode-c23648c62b80ae1e.rmeta --extern bytemuck=/opt/rustwide/target/debug/deps/libbytemuck-566cd5b76b6cb16d.rmeta --extern cao_lang=/opt/rustwide/target/debug/deps/libcao_lang-ce651ac83295ea8c.rmeta --extern ciborium=/opt/rustwide/target/debug/deps/libciborium-c5ab7d6eb3cc1e36.rmeta --extern criterion=/opt/rustwide/target/debug/deps/libcriterion-8064d226e790410c.rmeta --extern env_logger=/opt/rustwide/target/debug/deps/libenv_logger-9e1596f3e300500c.rmeta --extern num_enum=/opt/rustwide/target/debug/deps/libnum_enum-73b02ccb9ec91734.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-dbd141a4d0fa8730.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-941fba5e47260f4b.rmeta --extern serde_yaml=/opt/rustwide/target/debug/deps/libserde_yaml-a36d48ac334cf2ca.rmeta --extern smallvec=/opt/rustwide/target/debug/deps/libsmallvec-86eda4744b18769c.rmeta --extern thiserror=/opt/rustwide/target/debug/deps/libthiserror-3235b05b3d09b195.rmeta --extern tracing=/opt/rustwide/target/debug/deps/libtracing-fed38e1992562d32.rmeta --extern tracing_subscriber=/opt/rustwide/target/debug/deps/libtracing_subscriber-207ba38103cecd7c.rmeta --extern tracing_test=/opt/rustwide/target/debug/deps/libtracing_test-00544cfa5dc66225.rmeta --cap-lints=forbid` (exit status: 101) [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/collections/handle_table.rs:297:18 [INFO] [stdout] | [INFO] [stdout] 297 | pub fn entry(&mut self, key: Handle) -> Entry { [INFO] [stdout] | ^^^^^^^^^ ^^^^^^^^ the same lifetime is hidden here [INFO] [stdout] | | [INFO] [stdout] | the lifetime is elided here [INFO] [stdout] | [INFO] [stdout] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [INFO] [stdout] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stdout] help: use `'_` for type paths [INFO] [stdout] | [INFO] [stdout] 297 | pub fn entry(&mut self, key: Handle) -> Entry<'_, T> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/collections/hash_map.rs:452:18 [INFO] [stdout] | [INFO] [stdout] 452 | pub fn entry(&mut self, key: K) -> Result, MapError> [INFO] [stdout] | ^^^^^^^^^ ^^^^^^^^^^^ the same lifetime is hidden here [INFO] [stdout] | | [INFO] [stdout] | the lifetime is elided here [INFO] [stdout] | [INFO] [stdout] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [INFO] [stdout] help: use `'_` for type paths [INFO] [stdout] | [INFO] [stdout] 452 | pub fn entry(&mut self, key: K) -> Result, MapError> [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "04c2d055b8d16d964aca2a53ade797be3ea57b89810c05612551c8bcf5380bb0", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "04c2d055b8d16d964aca2a53ade797be3ea57b89810c05612551c8bcf5380bb0", kill_on_drop: false }` [INFO] [stdout] 04c2d055b8d16d964aca2a53ade797be3ea57b89810c05612551c8bcf5380bb0