[INFO] fetching crate selium-switchboard 0.4.3...
[INFO] testing selium-switchboard-0.4.3 against 1.99.0-beta.8+cargoflags=--release for beta-release-1.100-2
[INFO] extracting crate selium-switchboard 0.4.3 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate selium-switchboard 0.4.3
[INFO] finished tweaking crates.io crate selium-switchboard 0.4.3
[INFO] tweaked toml for crates.io crate selium-switchboard 0.4.3 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate selium-switchboard 0.4.3 on toolchain 1.99.0-beta.8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate selium-switchboard 0.4.3 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" "+1.99.0-beta.8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded selium-userland-macros v1.0.0-alpha.6
[INFO] [stderr]   Downloaded selium-abi v1.0.0-alpha.6
[INFO] [stderr]   Downloaded selium-userland v1.0.0-alpha.6
[INFO] [stderr]   Downloaded selium-switchboard-core v0.4.3
[INFO] [stderr]   Downloaded rkyv_derive v0.8.15
[INFO] [stderr]   Downloaded flatbuffers-build v0.2.4+flatc-25.12.19
[INFO] [stderr]   Downloaded selium-switchboard-protocol v0.4.3
[INFO] [stderr]   Downloaded rkyv v0.8.15
[INFO] [stderr]   Downloaded blake3 v1.8.4
[INFO] [stderr]   Downloaded flatc-fork v0.6.0+25.12.19-2026-02-06-03fffb2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] d8d8b49405e721cbdfed17e78836c58d0210222674720923c113380c9409fe4f
[INFO] running `Command { std: "docker" "start" "d8d8b49405e721cbdfed17e78836c58d0210222674720923c113380c9409fe4f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d8d8b49405e721cbdfed17e78836c58d0210222674720923c113380c9409fe4f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "d8d8b49405e721cbdfed17e78836c58d0210222674720923c113380c9409fe4f" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d8d8b49405e721cbdfed17e78836c58d0210222674720923c113380c9409fe4f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "d8d8b49405e721cbdfed17e78836c58d0210222674720923c113380c9409fe4f" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "build" "--frozen" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]    Compiling flatbuffers-build v0.2.4+flatc-25.12.19
[INFO] [stderr]    Compiling thiserror v1.0.69
[INFO] [stderr]    Compiling thiserror v2.0.18
[INFO] [stderr]    Compiling winnow v1.0.1
[INFO] [stderr]    Compiling simdutf8 v0.1.5
[INFO] [stderr]    Compiling cmake v0.1.58
[INFO] [stderr]    Compiling flatbuffers v25.12.19
[INFO] [stderr]    Compiling blake3 v1.8.4
[INFO] [stderr]    Compiling arrayref v0.3.9
[INFO] [stderr]    Compiling selium-userland-macros v1.0.0-alpha.6
[INFO] [stderr]    Compiling anyhow v1.0.102
[INFO] [stderr]    Compiling cpufeatures v0.3.0
[INFO] [stderr]    Compiling constant_time_eq v0.4.2
[INFO] [stderr]    Compiling arrayvec v0.7.6
[INFO] [stderr]    Compiling futures-util v0.3.32
[INFO] [stderr]    Compiling tracing-subscriber v0.3.23
[INFO] [stderr]    Compiling tracing v0.1.44
[INFO] [stderr]    Compiling flatc-fork v0.6.0+25.12.19-2026-02-06-03fffb2
[INFO] [stderr]    Compiling toml_parser v1.1.2+spec-1.1.0
[INFO] [stderr]    Compiling toml_edit v0.25.11+spec-1.1.0
[INFO] [stderr] error: could not compile `futures-util` (lib)
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/1.99.0-beta.8-x86_64-unknown-linux-gnu/bin/rustc --crate-name futures_util --edition=2018 /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/futures-util-0.3.32/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata,link -C opt-level=3 -C embed-bitcode=no --cfg 'feature="alloc"' --cfg 'feature="channel"' --cfg 'feature="futures-channel"' --cfg 'feature="futures-io"' --cfg 'feature="futures-sink"' --cfg 'feature="io"' --cfg 'feature="memchr"' --cfg 'feature="sink"' --cfg 'feature="slab"' --cfg 'feature="std"' --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values("alloc", "async-await", "async-await-macro", "bilock", "cfg-target-has-atomic", "channel", "compat", "default", "futures-channel", "futures-io", "futures-macro", "futures-sink", "futures_01", "io", "io-compat", "libc", "memchr", "portable-atomic", "sink", "slab", "spin", "std", "tokio-io", "unstable", "write-all-vectored"))' -C metadata=457f597823bbfa6d -C extra-filename=-08ec79d9c9a9f08f --out-dir /opt/rustwide/target/release/deps -C strip=debuginfo -L dependency=/opt/rustwide/target/release/deps --extern futures_channel=/opt/rustwide/target/release/deps/libfutures_channel-9a896d5e61cbcad7.rmeta --extern futures_core=/opt/rustwide/target/release/deps/libfutures_core-0b1b1ace5db6ba06.rmeta --extern futures_io=/opt/rustwide/target/release/deps/libfutures_io-a2c128f3959708f8.rmeta --extern futures_sink=/opt/rustwide/target/release/deps/libfutures_sink-908186862ad38b29.rmeta --extern futures_task=/opt/rustwide/target/release/deps/libfutures_task-4380614d65d5c09c.rmeta --extern memchr=/opt/rustwide/target/release/deps/libmemchr-67bd3f6c39c2c1d0.rmeta --extern pin_project_lite=/opt/rustwide/target/release/deps/libpin_project_lite-9a89bb36c0c56875.rmeta --extern slab=/opt/rustwide/target/release/deps/libslab-19b8bc1074c00c3a.rmeta --cap-lints allow --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `syn` (lib)
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/1.99.0-beta.8-x86_64-unknown-linux-gnu/bin/rustc --crate-name syn --edition=2021 /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/syn-2.0.117/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debug-assertions=off --cfg 'feature="clone-impls"' --cfg 'feature="default"' --cfg 'feature="derive"' --cfg 'feature="full"' --cfg 'feature="parsing"' --cfg 'feature="printing"' --cfg 'feature="proc-macro"' --cfg 'feature="visit-mut"' --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values("clone-impls", "default", "derive", "extra-traits", "fold", "full", "parsing", "printing", "proc-macro", "test", "visit", "visit-mut"))' -C metadata=bf0eb40b28332157 -C extra-filename=-3074de21c3cc6217 --out-dir /opt/rustwide/target/release/deps -C strip=debuginfo -L dependency=/opt/rustwide/target/release/deps --extern proc_macro2=/opt/rustwide/target/release/deps/libproc_macro2-ef13cdd4e3a95223.rmeta --extern quote=/opt/rustwide/target/release/deps/libquote-d071ef33497db442.rmeta --extern unicode_ident=/opt/rustwide/target/release/deps/libunicode_ident-3d1450b03eaa80c7.rmeta --cap-lints allow --cap-lints=warn` (signal: 9, SIGKILL: kill)
[ERROR] error running command: no output for 300 seconds
[INFO] running `Command { std: "docker" "inspect" "d8d8b49405e721cbdfed17e78836c58d0210222674720923c113380c9409fe4f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d8d8b49405e721cbdfed17e78836c58d0210222674720923c113380c9409fe4f", kill_on_drop: false }`
[INFO] [stdout] d8d8b49405e721cbdfed17e78836c58d0210222674720923c113380c9409fe4f
