[INFO] fetching crate picoserve 0.17.1... [INFO] checking picoserve-0.17.1 against try#66388cc165a6c4ac98c074dc9f0281ff23528c55 for pr-150727 [INFO] extracting crate picoserve 0.17.1 into /workspace/builds/worker-7-tc2/source [INFO] started tweaking crates.io crate picoserve 0.17.1 [INFO] finished tweaking crates.io crate picoserve 0.17.1 [INFO] tweaked toml for crates.io crate picoserve 0.17.1 written to /workspace/builds/worker-7-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate picoserve 0.17.1 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 picoserve 0.17.1 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] 035543fa9b1f14d0f8f7ff837f51cfe460b4f82f7140779d19551b2669e5f54a [INFO] running `Command { std: "docker" "start" "-a" "035543fa9b1f14d0f8f7ff837f51cfe460b4f82f7140779d19551b2669e5f54a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "035543fa9b1f14d0f8f7ff837f51cfe460b4f82f7140779d19551b2669e5f54a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "035543fa9b1f14d0f8f7ff837f51cfe460b4f82f7140779d19551b2669e5f54a", kill_on_drop: false }` [INFO] [stdout] 035543fa9b1f14d0f8f7ff837f51cfe460b4f82f7140779d19551b2669e5f54a [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] c827fadce70a46f21826f3d31538f295d5c05857d580c339b3046e3d0380835c [INFO] running `Command { std: "docker" "start" "-a" "c827fadce70a46f21826f3d31538f295d5c05857d580c339b3046e3d0380835c", kill_on_drop: false }` [INFO] [stderr] Compiling unicode-ident v1.0.19 [INFO] [stderr] Compiling libc v0.2.176 [INFO] [stderr] Compiling hashbrown v0.16.0 [INFO] [stderr] Compiling serde_core v1.0.228 [INFO] [stderr] Compiling syn v1.0.109 [INFO] [stderr] Compiling equivalent v1.0.2 [INFO] [stderr] Compiling winnow v0.7.13 [INFO] [stderr] Compiling toml_datetime v0.7.3 [INFO] [stderr] Compiling serde v1.0.228 [INFO] [stderr] Compiling thiserror v2.0.16 [INFO] [stderr] Compiling heapless v0.8.0 [INFO] [stderr] Compiling embedded-io-async v0.6.1 [INFO] [stderr] Checking embedded-io v0.6.1 [INFO] [stderr] Checking hash32 v0.3.1 [INFO] [stderr] Checking stable_deref_trait v1.2.0 [INFO] [stderr] Checking futures-channel v0.3.31 [INFO] [stderr] Checking futures-task v0.3.31 [INFO] [stderr] Checking const-sha1 v0.3.0 [INFO] [stderr] Compiling proc-macro2 v1.0.101 [INFO] [stderr] Checking smallvec v1.15.1 [INFO] [stderr] Checking futures-util v0.3.31 [INFO] [stderr] Compiling quote v1.0.40 [INFO] [stderr] Compiling indexmap v2.12.0 [INFO] [stderr] Compiling syn v2.0.106 [INFO] [stderr] Checking socket2 v0.6.0 [INFO] [stderr] Checking mio v1.0.4 [INFO] [stderr] Compiling toml_parser v1.0.4 [INFO] [stderr] Compiling toml_edit v0.23.7 [INFO] [stderr] Compiling proc-macro-crate v3.4.0 [INFO] [stderr] Compiling ntest_test_cases v0.9.3 [INFO] [stderr] Compiling ntest_timeout v0.9.3 [INFO] [stderr] Checking ntest v0.9.3 [INFO] [stderr] Compiling serde_derive v1.0.228 [INFO] [stderr] Compiling tokio-macros v2.5.0 [INFO] [stderr] Compiling thiserror-impl v2.0.16 [INFO] [stderr] Compiling picoserve_derive v0.1.3 [INFO] [stderr] Checking tokio v1.47.1 [INFO] [stderr] Checking hyper v1.7.0 [INFO] [stderr] Checking picoserve v0.17.1 (/opt/rustwide/workdir) [INFO] [stderr] [INFO] [stderr] thread 'rustc' (736) 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/futures.rs:67:5: 67:12 (#72), segments: [PathSegment { ident: #72, id: NodeId(4294967040), args: None }], tokens: None }, args: Unparsed(Empty), tokens: None }, tokens: None }), id: AttrId(680), style: Outer, span: src/futures.rs:67:5: 67:12 (#72) } [INFO] [stderr] stack backtrace: [INFO] [stderr] 0: 0x7e465342bfa3 - <::print::DisplayBacktrace as core[75ca2badb63c4514]::fmt::Display>::fmt [INFO] [stderr] 1: 0x7e4653a0fb48 - core[75ca2badb63c4514]::fmt::write [INFO] [stderr] 2: 0x7e4653442226 - ::write_fmt [INFO] [stderr] 3: 0x7e4653401b98 - std[7d609349af90bec6]::panicking::default_hook::{closure#0} [INFO] [stderr] 4: 0x7e465341f833 - std[7d609349af90bec6]::panicking::default_hook [INFO] [stderr] 5: 0x7e465240236a - std[7d609349af90bec6]::panicking::update_hook::>::{closure#0} [INFO] [stderr] 6: 0x7e465341fb12 - std[7d609349af90bec6]::panicking::panic_with_hook [INFO] [stderr] 7: 0x7e4653401c58 - std[7d609349af90bec6]::panicking::panic_handler::{closure#0} [INFO] [stderr] 8: 0x7e46533f89a9 - std[7d609349af90bec6]::sys::backtrace::__rust_end_short_backtrace:: [INFO] [stderr] 9: 0x7e465340372d - __rustc[69841a6cbc58d81d]::rust_begin_unwind [INFO] [stderr] 10: 0x7e4650038f9c - core[75ca2badb63c4514]::panicking::panic_fmt [INFO] [stderr] 11: 0x7e46547e0110 - ::token_trees [INFO] [stderr] 12: 0x7e465501c314 - ::fully_expand_fragment [INFO] [stderr] 13: 0x7e4654fe65d2 - ::expand_crate [INFO] [stderr] 14: 0x7e46540f0af3 - rustc_interface[903e43df8d6bd657]::passes::configure_and_expand [INFO] [stderr] 15: 0x7e4654c07658 - rustc_interface[903e43df8d6bd657]::passes::resolver_for_lowering_raw [INFO] [stderr] 16: 0x7e4654c073cd - rustc_query_impl[8c5349e00d64015e]::plumbing::__rust_begin_short_backtrace::> [INFO] [stderr] 17: 0x7e4654c073a7 - >::call_once [INFO] [stderr] 18: 0x7e4654becb5f - rustc_query_system[d45be4fb383a0235]::query::plumbing::try_execute_query::>, false, false, false>, rustc_query_impl[8c5349e00d64015e]::plumbing::QueryCtxt, false> [INFO] [stderr] 19: 0x7e4654bec6bc - rustc_query_impl[8c5349e00d64015e]::query_impl::resolver_for_lowering_raw::get_query_non_incr::__rust_end_short_backtrace [INFO] [stderr] 20: 0x7e4654d7127b - , 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: 0x7e4654c5ac98 - rustc_interface[903e43df8d6bd657]::interface::run_compiler::<(), rustc_driver_impl[3f9d6dd912ac34bd]::run_compiler::{closure#0}>::{closure#1} [INFO] [stderr] 22: 0x7e4654aeac4e - std[7d609349af90bec6]::sys::backtrace::__rust_begin_short_backtrace::::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()> [INFO] [stderr] 23: 0x7e4654aeaa20 - ::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>::{closure#1} as core[75ca2badb63c4514]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0} [INFO] [stderr] 24: 0x7e4654aed138 - ::new::thread_start [INFO] [stderr] 25: 0x7e464e68aaa4 - [INFO] [stderr] 26: 0x7e464e717a64 - 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_48_34-734.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 `picoserve` (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 picoserve --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("alloc", "defmt", "embassy", "json", "log", "std", "tokio", "ws"))' -C metadata=80eac58067624949 -C extra-filename=-f0a309ef18045eb4 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern const_sha1=/opt/rustwide/target/debug/deps/libconst_sha1-3084e3401b8d683a.rmeta --extern embedded_io_async=/opt/rustwide/target/debug/deps/libembedded_io_async-8937c5ac93018427.rmeta --extern futures_util=/opt/rustwide/target/debug/deps/libfutures_util-727e6802c736fe0c.rmeta --extern heapless=/opt/rustwide/target/debug/deps/libheapless-b5faf040f7f9520b.rmeta --extern http_body_util=/opt/rustwide/target/debug/deps/libhttp_body_util-b334190db241178a.rmeta --extern hyper=/opt/rustwide/target/debug/deps/libhyper-155bb79c1ba5a7a5.rmeta --extern ntest=/opt/rustwide/target/debug/deps/libntest-0b36d6610c9ddade.rmeta --extern picoserve_derive=/opt/rustwide/target/debug/deps/libpicoserve_derive-2f0040c4f368ea55.so --extern serde=/opt/rustwide/target/debug/deps/libserde-82555dc02cc74f42.rmeta --extern thiserror=/opt/rustwide/target/debug/deps/libthiserror-52fcb2fedea883b0.rmeta --extern tokio=/opt/rustwide/target/debug/deps/libtokio-1f4ebf5fdfdebc28.rmeta --cap-lints=forbid` (exit status: 101) [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] running `Command { std: "docker" "inspect" "c827fadce70a46f21826f3d31538f295d5c05857d580c339b3046e3d0380835c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c827fadce70a46f21826f3d31538f295d5c05857d580c339b3046e3d0380835c", kill_on_drop: false }` [INFO] [stdout] c827fadce70a46f21826f3d31538f295d5c05857d580c339b3046e3d0380835c