[INFO] fetching crate crux_cli 0.2.0...
[INFO] testing crux_cli-0.2.0 against beta-2026-04-21 for beta-1.96-1
[INFO] extracting crate crux_cli 0.2.0 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate crux_cli 0.2.0
[INFO] finished tweaking crates.io crate crux_cli 0.2.0
[INFO] tweaked toml for crates.io crate crux_cli 0.2.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate crux_cli 0.2.0 on toolchain beta-2026-04-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate crux_cli 0.2.0 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" "+beta-2026-04-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] eac4ade011415f8c5e80a34cdc27ad1d742774e70e34b2180d8b57c8a0a1aa85
[INFO] running `Command { std: "docker" "start" "-a" "eac4ade011415f8c5e80a34cdc27ad1d742774e70e34b2180d8b57c8a0a1aa85", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "eac4ade011415f8c5e80a34cdc27ad1d742774e70e34b2180d8b57c8a0a1aa85", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eac4ade011415f8c5e80a34cdc27ad1d742774e70e34b2180d8b57c8a0a1aa85", kill_on_drop: false }`
[INFO] [stdout] eac4ade011415f8c5e80a34cdc27ad1d742774e70e34b2180d8b57c8a0a1aa85
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 77b594853a59d71b34ad625144252486f345952d0b2234298feb821e232b80db
[INFO] running `Command { std: "docker" "start" "-a" "77b594853a59d71b34ad625144252486f345952d0b2234298feb821e232b80db", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.183
[INFO] [stderr]    Compiling zerocopy v0.8.42
[INFO] [stderr]    Compiling hashbrown v0.16.1
[INFO] [stderr]    Compiling anyhow v1.0.102
[INFO] [stderr]    Compiling memchr v2.8.0
[INFO] [stderr]    Compiling siphasher v0.3.11
[INFO] [stderr]    Compiling serde_json v1.0.149
[INFO] [stderr]    Compiling itoa v1.0.17
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]    Compiling proc-macro-hack v0.5.20+deprecated
[INFO] [stderr]    Compiling camino v1.2.2
[INFO] [stderr]    Compiling getrandom v0.3.4
[INFO] [stderr]    Compiling ahash v0.8.12
[INFO] [stderr]    Compiling bitflags v2.11.0
[INFO] [stderr]    Compiling aho-corasick v1.1.4
[INFO] [stderr]    Compiling smawk v0.3.2
[INFO] [stderr]    Compiling rustix v1.1.4
[INFO] [stderr]    Compiling target-lexicon v0.13.3
[INFO] [stderr]    Compiling typeid v1.0.3
[INFO] [stderr]    Compiling phf_shared v0.10.0
[INFO] [stderr]    Compiling semver v1.0.27
[INFO] [stderr]    Compiling indexmap v2.13.0
[INFO] [stderr]    Compiling guppy-workspace-hack v0.1.0
[INFO] [stderr]    Compiling minimal-lexical v0.2.1
[INFO] [stderr]    Compiling unicode-segmentation v1.12.0
[INFO] [stderr]    Compiling winnow v0.7.15
[INFO] [stderr]    Compiling fs-err v2.11.0
[INFO] [stderr]    Compiling nom v7.1.3
[INFO] [stderr]    Compiling regex-automata v0.4.14
[INFO] [stderr]    Compiling getrandom v0.4.2
[INFO] [stderr]    Compiling rayon v1.11.0
[INFO] [stderr]    Compiling getrandom v0.2.17
[INFO] [stderr]    Compiling basic-toml v0.1.10
[INFO] [stderr]    Compiling fixedbitset v0.4.2
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling target-spec v3.5.7
[INFO] [stderr]    Compiling glob v0.3.3
[INFO] [stderr]    Compiling tempfile v3.27.0
[INFO] [stderr]    Compiling hashbrown v0.15.5
[INFO] [stderr]    Compiling petgraph v0.6.5
[INFO] [stderr]    Compiling ascent_base v0.8.0
[INFO] [stderr]    Compiling cfg-expr v0.20.7
[INFO] [stderr]    Compiling parking_lot_core v0.9.12
[INFO] [stderr]    Compiling weedle2 v5.0.0
[INFO] [stderr]    Compiling erased-discriminant v1.0.1
[INFO] [stderr]    Compiling textwrap v0.16.2
[INFO] [stderr]    Compiling cargo-platform v0.3.2
[INFO] [stderr]    Compiling itertools v0.13.0
[INFO] [stderr]    Compiling lazy_static v1.5.0
[INFO] [stderr]    Compiling duplicate v2.0.1
[INFO] [stderr]    Compiling fixedbitset v0.5.7
[INFO] [stderr]    Compiling plain v0.2.3
[INFO] [stderr]    Compiling textwrap v0.13.4
[INFO] [stderr]    Compiling anstream v0.6.21
[INFO] [stderr]    Compiling petgraph v0.8.3
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling darling_core v0.20.11
[INFO] [stderr]    Compiling regex v1.12.3
[INFO] [stderr]    Compiling convert_case v0.11.0
[INFO] [stderr]    Compiling pathdiff v0.2.3
[INFO] [stderr]    Compiling instant v0.1.13
[INFO] [stderr]    Compiling itertools v0.14.0
[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/beta-2026-04-21-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 --cfg 'feature="clone-impls"' --cfg 'feature="default"' --cfg 'feature="derive"' --cfg 'feature="extra-traits"' --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=565bacb511bf186a -C extra-filename=-ec1ce637e2446a17 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-0fa97b1aa44f5fda.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-544fd508281ca8af.rmeta --extern unicode_ident=/opt/rustwide/target/debug/deps/libunicode_ident-423507c85e36a25a.rmeta --cap-lints allow --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "77b594853a59d71b34ad625144252486f345952d0b2234298feb821e232b80db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "77b594853a59d71b34ad625144252486f345952d0b2234298feb821e232b80db", kill_on_drop: false }`
[INFO] [stdout] 77b594853a59d71b34ad625144252486f345952d0b2234298feb821e232b80db