[INFO] fetching crate foxglove 0.16.2... [INFO] checking foxglove-0.16.2 against try#66388cc165a6c4ac98c074dc9f0281ff23528c55 for pr-150727 [INFO] extracting crate foxglove 0.16.2 into /workspace/builds/worker-6-tc2/source [INFO] started tweaking crates.io crate foxglove 0.16.2 [INFO] finished tweaking crates.io crate foxglove 0.16.2 [INFO] tweaked toml for crates.io crate foxglove 0.16.2 written to /workspace/builds/worker-6-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate foxglove 0.16.2 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 foxglove 0.16.2 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] [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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+66388cc165a6c4ac98c074dc9f0281ff23528c55" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 9cf46526ccfe934baa7e73f2762ba0e326d873f9c7900a08aaf14b44aaf93959 [INFO] running `Command { std: "docker" "start" "-a" "9cf46526ccfe934baa7e73f2762ba0e326d873f9c7900a08aaf14b44aaf93959", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "9cf46526ccfe934baa7e73f2762ba0e326d873f9c7900a08aaf14b44aaf93959", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9cf46526ccfe934baa7e73f2762ba0e326d873f9c7900a08aaf14b44aaf93959", kill_on_drop: false }` [INFO] [stdout] 9cf46526ccfe934baa7e73f2762ba0e326d873f9c7900a08aaf14b44aaf93959 [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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+66388cc165a6c4ac98c074dc9f0281ff23528c55" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 772cd6a7a649c07e9f92a77fe6edba4d5fbde2d4eb170b87e4e5e39ae54c8cce [INFO] running `Command { std: "docker" "start" "-a" "772cd6a7a649c07e9f92a77fe6edba4d5fbde2d4eb170b87e4e5e39ae54c8cce", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.97 [INFO] [stderr] Compiling libc v0.2.175 [INFO] [stderr] Compiling getrandom v0.3.3 [INFO] [stderr] Compiling strsim v0.11.1 [INFO] [stderr] Compiling anyhow v1.0.99 [INFO] [stderr] Checking smallvec v1.15.1 [INFO] [stderr] Compiling serde v1.0.219 [INFO] [stderr] Compiling thiserror v2.0.14 [INFO] [stderr] Compiling zstd-safe v7.2.4 [INFO] [stderr] Checking lock_api v0.4.13 [INFO] [stderr] Compiling bytes v1.10.1 [INFO] [stderr] Checking sha1 v0.10.6 [INFO] [stderr] Checking utf-8 v0.7.6 [INFO] [stderr] Compiling rustix v1.0.8 [INFO] [stderr] Checking bytemuck v1.23.2 [INFO] [stderr] Compiling serde_json v1.0.142 [INFO] [stderr] Checking crc32fast v1.5.0 [INFO] [stderr] Checking bitflags v2.9.1 [INFO] [stderr] Checking linux-raw-sys v0.9.4 [INFO] [stderr] Checking memchr v2.7.5 [INFO] [stderr] Checking bimap v0.6.3 [INFO] [stderr] Checking spin v0.9.8 [INFO] [stderr] Checking fastrand v2.3.0 [INFO] [stderr] Checking urlencoding v2.1.3 [INFO] [stderr] Checking similar v2.7.0 [INFO] [stderr] Checking smallbytes v0.1.0 [INFO] [stderr] Checking arc-swap v1.7.1 [INFO] [stderr] Checking maplit v1.0.2 [INFO] [stderr] Checking assert_matches v1.5.0 [INFO] [stderr] Compiling quote v1.0.40 [INFO] [stderr] Compiling syn v2.0.104 [INFO] [stderr] Compiling syn v1.0.109 [INFO] [stderr] Compiling jobserver v0.1.33 [INFO] [stderr] Compiling cc v1.2.32 [INFO] [stderr] Checking signal-hook-registry v1.4.6 [INFO] [stderr] Checking socket2 v0.6.0 [INFO] [stderr] Checking mio v1.0.4 [INFO] [stderr] Checking getrandom v0.2.16 [INFO] [stderr] Checking num_cpus v1.17.0 [INFO] [stderr] Checking parking_lot_core v0.9.11 [INFO] [stderr] Checking console v0.15.11 [INFO] [stderr] Checking nanorand v0.7.0 [INFO] [stderr] Checking rand_core v0.9.3 [INFO] [stderr] Checking parking_lot v0.12.4 [INFO] [stderr] Checking flume v0.11.1 [INFO] [stderr] Checking rand_chacha v0.9.0 [INFO] [stderr] Checking rand v0.9.2 [INFO] [stderr] Compiling zstd-sys v2.0.15+zstd.1.5.7 [INFO] [stderr] Compiling lz4-sys v1.11.1+lz4-1.10.0 [INFO] [stderr] Checking tempfile v3.20.0 [INFO] [stderr] Compiling darling_core v0.20.11 [INFO] [stderr] Compiling prost-derive v0.13.5 [INFO] [stderr] Compiling serde_derive v1.0.219 [INFO] [stderr] Compiling tokio-macros v2.5.0 [INFO] [stderr] Compiling thiserror-impl v2.0.14 [INFO] [stderr] Compiling tracing-attributes v0.1.30 [INFO] [stderr] Compiling futures-macro v0.3.31 [INFO] [stderr] Compiling thiserror-impl v1.0.69 [INFO] [stderr] Compiling serde_repr v0.1.20 [INFO] [stderr] Compiling tracing-test-macro v0.2.5 [INFO] [stderr] Compiling binrw_derive v0.12.0 [INFO] [stderr] Compiling delegate v0.13.4 [INFO] [stderr] Checking tokio v1.47.1 [INFO] [stderr] Checking futures-util v0.3.31 [INFO] [stderr] Checking zstd v0.13.3 [INFO] [stderr] Checking thiserror v1.0.69 [INFO] [stderr] Checking tracing v0.1.41 [INFO] [stderr] Checking tungstenite v0.28.0 [INFO] [stderr] Checking tracing-subscriber v0.3.20 [INFO] [stderr] Compiling prost v0.13.5 [INFO] [stderr] Compiling darling_macro v0.20.11 [INFO] [stderr] Compiling darling v0.20.11 [INFO] [stderr] Compiling enumset_derive v0.12.0 [INFO] [stderr] Compiling serde_with_macros v3.14.0 [INFO] [stderr] Checking prost-types v0.13.5 [INFO] [stderr] Checking enumset v1.1.7 [INFO] [stderr] Checking tracing-test v0.2.5 [INFO] [stderr] Compiling foxglove_derive v0.16.2 [INFO] [stderr] Checking tokio-util v0.7.16 [INFO] [stderr] Checking tokio-tungstenite v0.28.0 [INFO] [stderr] Checking binrw v0.12.0 [INFO] [stderr] Checking lz4 v1.28.1 [INFO] [stderr] Checking serde_with v3.14.0 [INFO] [stderr] Checking insta v1.43.1 [INFO] [stderr] Checking mcap v0.24.0 [INFO] [stderr] Checking foxglove v0.16.2 (/opt/rustwide/workdir) [INFO] [stderr] [INFO] [stderr] thread 'rustc' (1566) 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/context.rs:651:5: 651:12 (#721), segments: [PathSegment { ident: #721, id: NodeId(4294967040), args: None }], tokens: None }, args: Unparsed(Empty), tokens: None }, tokens: None }), id: AttrId(3029), style: Outer, span: src/context.rs:651:5: 651:12 (#721) } [INFO] [stderr] stack backtrace: [INFO] [stderr] 0: 0x78e0bb22bfa3 - <::print::DisplayBacktrace as core[75ca2badb63c4514]::fmt::Display>::fmt [INFO] [stderr] 1: 0x78e0bb80fb48 - core[75ca2badb63c4514]::fmt::write [INFO] [stderr] 2: 0x78e0bb242226 - ::write_fmt [INFO] [stderr] 3: 0x78e0bb201b98 - std[7d609349af90bec6]::panicking::default_hook::{closure#0} [INFO] [stderr] 4: 0x78e0bb21f833 - std[7d609349af90bec6]::panicking::default_hook [INFO] [stderr] 5: 0x78e0ba20236a - std[7d609349af90bec6]::panicking::update_hook::>::{closure#0} [INFO] [stderr] 6: 0x78e0bb21fb12 - std[7d609349af90bec6]::panicking::panic_with_hook [INFO] [stderr] 7: 0x78e0bb201c58 - std[7d609349af90bec6]::panicking::panic_handler::{closure#0} [INFO] [stderr] 8: 0x78e0bb1f89a9 - std[7d609349af90bec6]::sys::backtrace::__rust_end_short_backtrace:: [INFO] [stderr] 9: 0x78e0bb20372d - __rustc[69841a6cbc58d81d]::rust_begin_unwind [INFO] [stderr] 10: 0x78e0b7e38f9c - core[75ca2badb63c4514]::panicking::panic_fmt [INFO] [stderr] 11: 0x78e0bc5e0110 - ::token_trees [INFO] [stderr] 12: 0x78e0bce1c314 - ::fully_expand_fragment [INFO] [stderr] 13: 0x78e0bcde65d2 - ::expand_crate [INFO] [stderr] 14: 0x78e0bbef0af3 - rustc_interface[903e43df8d6bd657]::passes::configure_and_expand [INFO] [stderr] 15: 0x78e0bca07658 - rustc_interface[903e43df8d6bd657]::passes::resolver_for_lowering_raw [INFO] [stderr] 16: 0x78e0bca073cd - rustc_query_impl[8c5349e00d64015e]::plumbing::__rust_begin_short_backtrace::> [INFO] [stderr] 17: 0x78e0bca073a7 - >::call_once [INFO] [stderr] 18: 0x78e0bc9ecb5f - rustc_query_system[d45be4fb383a0235]::query::plumbing::try_execute_query::>, false, false, false>, rustc_query_impl[8c5349e00d64015e]::plumbing::QueryCtxt, false> [INFO] [stderr] 19: 0x78e0bc9ec6bc - rustc_query_impl[8c5349e00d64015e]::query_impl::resolver_for_lowering_raw::get_query_non_incr::__rust_end_short_backtrace [INFO] [stderr] 20: 0x78e0bcb7127b - , 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: 0x78e0bca5ac98 - rustc_interface[903e43df8d6bd657]::interface::run_compiler::<(), rustc_driver_impl[3f9d6dd912ac34bd]::run_compiler::{closure#0}>::{closure#1} [INFO] [stderr] 22: 0x78e0bc8eac4e - std[7d609349af90bec6]::sys::backtrace::__rust_begin_short_backtrace::::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()> [INFO] [stderr] 23: 0x78e0bc8eaa20 - ::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>::{closure#1} as core[75ca2badb63c4514]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0} [INFO] [stderr] 24: 0x78e0bc8ed138 - ::new::thread_start [INFO] [stderr] 25: 0x78e0b648aaa4 - [INFO] [stderr] 26: 0x78e0b6517a64 - 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_59_04-1562.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 `foxglove` (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 foxglove --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 '--warn=clippy::unused_async' '--warn=clippy::unnecessary_literal_bound' --warn=rust-2024-compatibility '--warn=clippy::return_self_not_must_use' '--warn=clippy::ref_option_ref' '--warn=clippy::ref_option' '--warn=clippy::ref_binding_to_reference' '--warn=clippy::option_as_ref_cloned' '--warn=clippy::no_mangle_with_rust_abi' '--warn=clippy::needless_for_each' '--warn=clippy::mut_mut' '--warn=clippy::mismatching_type_param_order' '--warn=clippy::match_same_arms' '--warn=clippy::match_bool' '--warn=clippy::manual_ok_or' '--warn=clippy::manual_let_else' '--warn=clippy::macro_use_imports' '--warn=clippy::iter_not_returning_iterator' '--warn=clippy::invalid_upcast_comparisons' '--warn=clippy::inefficient_to_string' '--warn=clippy::inconsistent_struct_constructor' '--warn=clippy::implicit_clone' '--warn=clippy::flat_map_option' '--warn=clippy::explicit_iter_loop' '--warn=clippy::explicit_into_iter_loop' '--warn=clippy::explicit_deref_methods' '--warn=clippy::expl_impl_clone_on_copy' '--warn=clippy::copy_iterator' '--warn=clippy::cloned_instead_of_copied' '--warn=clippy::borrow_as_ptr' '--warn=clippy::assigning_clones' --allow=tail-expr-drop-order --allow=if-let-rescope --allow=edition-2024-expr-fragment-specifier --test --cfg 'feature="default"' --cfg 'feature="derive"' --cfg 'feature="live_visualization"' --cfg 'feature="lz4"' --cfg 'feature="zstd"' --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values("agent", "chrono", "default", "derive", "live_visualization", "lz4", "schemars", "stream", "tls", "unstable", "zstd"))' -C metadata=859f5e8d3e35d0d6 -C extra-filename=-30b00214ea318adc --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern arc_swap=/opt/rustwide/target/debug/deps/libarc_swap-f45eb29086487d7e.rmeta --extern assert_matches=/opt/rustwide/target/debug/deps/libassert_matches-ad0cb9533c05fd3a.rmeta --extern base64=/opt/rustwide/target/debug/deps/libbase64-d8aec028dea2d277.rmeta --extern bimap=/opt/rustwide/target/debug/deps/libbimap-ed2c4f87a3a3b692.rmeta --extern bytes=/opt/rustwide/target/debug/deps/libbytes-696d9749778e1593.rmeta --extern delegate=/opt/rustwide/target/debug/deps/libdelegate-dcb8aecb9ab06f7a.so --extern flume=/opt/rustwide/target/debug/deps/libflume-10431c7718992122.rmeta --extern foxglove_derive=/opt/rustwide/target/debug/deps/libfoxglove_derive-1d1efa55f29e3c2d.so --extern futures_util=/opt/rustwide/target/debug/deps/libfutures_util-d7d17a96b142ffab.rmeta --extern insta=/opt/rustwide/target/debug/deps/libinsta-b18bae2e177b934a.rmeta --extern maplit=/opt/rustwide/target/debug/deps/libmaplit-3e7e98e7c0c45f70.rmeta --extern mcap=/opt/rustwide/target/debug/deps/libmcap-60205c634a9bb343.rmeta --extern parking_lot=/opt/rustwide/target/debug/deps/libparking_lot-f4332dad30108d56.rmeta --extern prost=/opt/rustwide/target/debug/deps/libprost-e1199ae263754ebe.rmeta --extern prost_types=/opt/rustwide/target/debug/deps/libprost_types-0ebe0820a73bddf0.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-9b3797c222c1a113.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-370731f83cfc5511.rmeta --extern serde_repr=/opt/rustwide/target/debug/deps/libserde_repr-1a9d29e64c163518.so --extern serde_with=/opt/rustwide/target/debug/deps/libserde_with-bba68c8019bf9d54.rmeta --extern smallbytes=/opt/rustwide/target/debug/deps/libsmallbytes-ad4f090f3193d03a.rmeta --extern smallvec=/opt/rustwide/target/debug/deps/libsmallvec-e031f0e5a5b4d2a5.rmeta --extern tempfile=/opt/rustwide/target/debug/deps/libtempfile-08cbbd18f23269b9.rmeta --extern thiserror=/opt/rustwide/target/debug/deps/libthiserror-352688d86dfec0ba.rmeta --extern tokio=/opt/rustwide/target/debug/deps/libtokio-bf24057e9d0e0945.rmeta --extern tokio_tungstenite=/opt/rustwide/target/debug/deps/libtokio_tungstenite-2e38581943968080.rmeta --extern tokio_util=/opt/rustwide/target/debug/deps/libtokio_util-219270107048c395.rmeta --extern tracing=/opt/rustwide/target/debug/deps/libtracing-d7c934fbdf5bcb63.rmeta --extern tracing_test=/opt/rustwide/target/debug/deps/libtracing_test-3579444ad68e439e.rmeta --extern urlencoding=/opt/rustwide/target/debug/deps/liburlencoding-ce62b83da7096e72.rmeta --cap-lints=forbid -L native=/opt/rustwide/target/debug/build/lz4-sys-4dec96c9b34549a9/out -L native=/opt/rustwide/target/debug/build/zstd-sys-ae75245963c7cbc1/out` (exit status: 101) [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] running `Command { std: "docker" "inspect" "772cd6a7a649c07e9f92a77fe6edba4d5fbde2d4eb170b87e4e5e39ae54c8cce", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "772cd6a7a649c07e9f92a77fe6edba4d5fbde2d4eb170b87e4e5e39ae54c8cce", kill_on_drop: false }` [INFO] [stdout] 772cd6a7a649c07e9f92a77fe6edba4d5fbde2d4eb170b87e4e5e39ae54c8cce