[INFO] fetching crate mcp-oxidized 1.2.0... [INFO] checking mcp-oxidized-1.2.0 against try#66388cc165a6c4ac98c074dc9f0281ff23528c55 for pr-150727 [INFO] extracting crate mcp-oxidized 1.2.0 into /workspace/builds/worker-1-tc2/source [INFO] started tweaking crates.io crate mcp-oxidized 1.2.0 [INFO] removed 0 missing tests [INFO] finished tweaking crates.io crate mcp-oxidized 1.2.0 [INFO] tweaked toml for crates.io crate mcp-oxidized 1.2.0 written to /workspace/builds/worker-1-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate mcp-oxidized 1.2.0 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 mcp-oxidized 1.2.0 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] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 664930251d2bb8d445e9ff77747158d7dd554aebdbcc6de7a3b220121e568e69 [INFO] running `Command { std: "docker" "start" "-a" "664930251d2bb8d445e9ff77747158d7dd554aebdbcc6de7a3b220121e568e69", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "664930251d2bb8d445e9ff77747158d7dd554aebdbcc6de7a3b220121e568e69", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "664930251d2bb8d445e9ff77747158d7dd554aebdbcc6de7a3b220121e568e69", kill_on_drop: false }` [INFO] [stdout] 664930251d2bb8d445e9ff77747158d7dd554aebdbcc6de7a3b220121e568e69 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 0ee9ffa15a5895162d72c6d9538b8376c1cc15e491441e79936943a7a09c31e4 [INFO] running `Command { std: "docker" "start" "-a" "0ee9ffa15a5895162d72c6d9538b8376c1cc15e491441e79936943a7a09c31e4", kill_on_drop: false }` [INFO] [stderr] Checking itoa v1.0.16 [INFO] [stderr] Compiling serde_core v1.0.228 [INFO] [stderr] Compiling serde v1.0.228 [INFO] [stderr] Compiling cc v1.2.50 [INFO] [stderr] Compiling serde_json v1.0.146 [INFO] [stderr] Checking ryu v1.0.21 [INFO] [stderr] Compiling tracing-attributes v0.1.31 [INFO] [stderr] Checking tokio v1.48.0 [INFO] [stderr] Checking futures-util v0.3.31 [INFO] [stderr] Compiling darling_core v0.23.0 [INFO] [stderr] Checking regex-automata v0.4.13 [INFO] [stderr] Checking getrandom v0.3.4 [INFO] [stderr] Compiling serde_derive_internals v0.29.1 [INFO] [stderr] Compiling ref-cast-impl v1.0.25 [INFO] [stderr] Compiling portable-atomic v1.12.0 [INFO] [stderr] Checking http v1.4.0 [INFO] [stderr] Checking webpki-roots v1.0.4 [INFO] [stderr] Checking async-lock v3.4.2 [INFO] [stderr] Checking uuid v1.19.0 [INFO] [stderr] Compiling pastey v0.2.1 [INFO] [stderr] Checking num_cpus v1.17.0 [INFO] [stderr] Checking sdd v3.0.10 [INFO] [stderr] Checking http-body v1.0.1 [INFO] [stderr] Checking http-body-util v0.1.3 [INFO] [stderr] Checking deadpool-runtime v0.1.4 [INFO] [stderr] Checking scc v2.4.0 [INFO] [stderr] Compiling serial_test_derive v3.2.0 [INFO] [stderr] Checking ref-cast v1.0.25 [INFO] [stderr] Checking tempfile v3.23.0 [INFO] [stderr] Compiling ring v0.17.14 [INFO] [stderr] Checking tracing v0.1.44 [INFO] [stderr] Compiling schemars_derive v1.1.0 [INFO] [stderr] Checking regex v1.12.2 [INFO] [stderr] Checking matchers v0.2.0 [INFO] [stderr] Checking tracing-subscriber v0.3.22 [INFO] [stderr] Compiling darling_macro v0.23.0 [INFO] [stderr] Checking futures-executor v0.3.31 [INFO] [stderr] Checking moka v0.12.12 [INFO] [stderr] Compiling darling v0.23.0 [INFO] [stderr] Checking futures v0.3.31 [INFO] [stderr] Checking serial_test v3.2.0 [INFO] [stderr] Checking url v2.5.7 [INFO] [stderr] Checking chrono v0.4.42 [INFO] [stderr] Checking serde_urlencoded v0.7.1 [INFO] [stderr] Checking assert-json-diff v2.0.2 [INFO] [stderr] Checking tokio-util v0.7.17 [INFO] [stderr] Checking tower v0.5.2 [INFO] [stderr] Checking deadpool v0.12.3 [INFO] [stderr] Checking schemars v1.1.0 [INFO] [stderr] Checking h2 v0.4.12 [INFO] [stderr] Checking tower-http v0.6.8 [INFO] [stderr] Compiling rustls v0.23.35 [INFO] [stderr] Compiling rmcp-macros v0.12.0 [INFO] [stderr] Checking rmcp v0.12.0 [INFO] [stderr] Checking rustls-webpki v0.103.8 [INFO] [stderr] Checking hyper v1.8.1 [INFO] [stderr] Checking hyper-util v0.1.19 [INFO] [stderr] Checking tokio-rustls v0.26.4 [INFO] [stderr] Checking hyper-rustls v0.27.7 [INFO] [stderr] Checking wiremock v0.6.5 [INFO] [stderr] Checking reqwest v0.12.28 [INFO] [stderr] Checking mcp-oxidized v1.2.0 (/opt/rustwide/workdir) [INFO] [stderr] [INFO] [stderr] thread 'rustc' (923) 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/config.rs:210:5: 210:12 (#108), segments: [PathSegment { ident: #108, id: NodeId(4294967040), args: None }], tokens: None }, args: Unparsed(Empty), tokens: None }, tokens: None }), id: AttrId(1888), style: Outer, span: src/config.rs:210:5: 210:12 (#108) } [INFO] [stderr] stack backtrace: [INFO] [stderr] 0: 0x74742462bfa3 - <::print::DisplayBacktrace as core[75ca2badb63c4514]::fmt::Display>::fmt [INFO] [stderr] 1: 0x747424c0fb48 - core[75ca2badb63c4514]::fmt::write [INFO] [stderr] 2: 0x747424642226 - ::write_fmt [INFO] [stderr] 3: 0x747424601b98 - std[7d609349af90bec6]::panicking::default_hook::{closure#0} [INFO] [stderr] 4: 0x74742461f833 - std[7d609349af90bec6]::panicking::default_hook [INFO] [stderr] 5: 0x74742360236a - std[7d609349af90bec6]::panicking::update_hook::>::{closure#0} [INFO] [stderr] 6: 0x74742461fb12 - std[7d609349af90bec6]::panicking::panic_with_hook [INFO] [stderr] 7: 0x747424601c58 - std[7d609349af90bec6]::panicking::panic_handler::{closure#0} [INFO] [stderr] 8: 0x7474245f89a9 - std[7d609349af90bec6]::sys::backtrace::__rust_end_short_backtrace:: [INFO] [stderr] 9: 0x74742460372d - __rustc[69841a6cbc58d81d]::rust_begin_unwind [INFO] [stderr] 10: 0x747421238f9c - core[75ca2badb63c4514]::panicking::panic_fmt [INFO] [stderr] 11: 0x7474259e0110 - ::token_trees [INFO] [stderr] 12: 0x74742621c314 - ::fully_expand_fragment [INFO] [stderr] 13: 0x7474261e65d2 - ::expand_crate [INFO] [stderr] 14: 0x7474252f0af3 - rustc_interface[903e43df8d6bd657]::passes::configure_and_expand [INFO] [stderr] 15: 0x747425e07658 - rustc_interface[903e43df8d6bd657]::passes::resolver_for_lowering_raw [INFO] [stderr] 16: 0x747425e073cd - rustc_query_impl[8c5349e00d64015e]::plumbing::__rust_begin_short_backtrace::> [INFO] [stderr] 17: 0x747425e073a7 - >::call_once [INFO] [stderr] 18: 0x747425decb5f - rustc_query_system[d45be4fb383a0235]::query::plumbing::try_execute_query::>, false, false, false>, rustc_query_impl[8c5349e00d64015e]::plumbing::QueryCtxt, false> [INFO] [stderr] 19: 0x747425dec6bc - rustc_query_impl[8c5349e00d64015e]::query_impl::resolver_for_lowering_raw::get_query_non_incr::__rust_end_short_backtrace [INFO] [stderr] 20: 0x747425f7127b - , 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: 0x747425e5ac98 - rustc_interface[903e43df8d6bd657]::interface::run_compiler::<(), rustc_driver_impl[3f9d6dd912ac34bd]::run_compiler::{closure#0}>::{closure#1} [INFO] [stderr] 22: 0x747425ceac4e - std[7d609349af90bec6]::sys::backtrace::__rust_begin_short_backtrace::::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()> [INFO] [stderr] 23: 0x747425ceaa20 - ::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>::{closure#1} as core[75ca2badb63c4514]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0} [INFO] [stderr] 24: 0x747425ced138 - ::new::thread_start [INFO] [stderr] 25: 0x74741f88aaa4 - [INFO] [stderr] 26: 0x74741f917a64 - 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-2026-01-08T20_26_23-920.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 `mcp-oxidized` (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 mcp_oxidized --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 --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values())' -C metadata=d0fe9ded8510a854 -C extra-filename=-9e8da58033ace308 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern async_trait=/opt/rustwide/target/debug/deps/libasync_trait-45dae483728e037f.so --extern moka=/opt/rustwide/target/debug/deps/libmoka-fe1236e9d282ce5b.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-a8ce60b0b51564fd.rmeta --extern reqwest=/opt/rustwide/target/debug/deps/libreqwest-7f5ca631e41e9049.rmeta --extern rmcp=/opt/rustwide/target/debug/deps/librmcp-c021cc254e4ad85a.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-1a79334f44723a0b.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-90a5639903550fd0.rmeta --extern serial_test=/opt/rustwide/target/debug/deps/libserial_test-cba7622aef9d6d79.rmeta --extern similar=/opt/rustwide/target/debug/deps/libsimilar-3dba6591ac13e937.rmeta --extern tempfile=/opt/rustwide/target/debug/deps/libtempfile-2055a8d28dd1da3a.rmeta --extern thiserror=/opt/rustwide/target/debug/deps/libthiserror-ebf7701f8b888548.rmeta --extern tokio=/opt/rustwide/target/debug/deps/libtokio-0be983688eb58a56.rmeta --extern tracing=/opt/rustwide/target/debug/deps/libtracing-f1a404a47421ea20.rmeta --extern tracing_subscriber=/opt/rustwide/target/debug/deps/libtracing_subscriber-9e4de5904b783f6e.rmeta --extern urlencoding=/opt/rustwide/target/debug/deps/liburlencoding-ce62b83da7096e72.rmeta --extern wiremock=/opt/rustwide/target/debug/deps/libwiremock-f4b7905faf268f69.rmeta --cap-lints=forbid -L native=/opt/rustwide/target/debug/build/ring-1f9401719c6ddbda/out` (exit status: 101) [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] running `Command { std: "docker" "inspect" "0ee9ffa15a5895162d72c6d9538b8376c1cc15e491441e79936943a7a09c31e4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "0ee9ffa15a5895162d72c6d9538b8376c1cc15e491441e79936943a7a09c31e4", kill_on_drop: false }` [INFO] [stdout] 0ee9ffa15a5895162d72c6d9538b8376c1cc15e491441e79936943a7a09c31e4