[INFO] fetching crate snippet 0.1.6...
[INFO] testing snippet-0.1.6 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate snippet 0.1.6 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate snippet 0.1.6
[INFO] finished tweaking crates.io crate snippet 0.1.6
[INFO] tweaked toml for crates.io crate snippet 0.1.6 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate snippet 0.1.6 on toolchain beta-2025-09-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate snippet 0.1.6 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-2025-09-21" "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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1e83c4b8488310bf0aa218edfb9ebb20725f993c54813b3cb23c0126a00289aa
[INFO] running `Command { std: "docker" "start" "-a" "1e83c4b8488310bf0aa218edfb9ebb20725f993c54813b3cb23c0126a00289aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1e83c4b8488310bf0aa218edfb9ebb20725f993c54813b3cb23c0126a00289aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e83c4b8488310bf0aa218edfb9ebb20725f993c54813b3cb23c0126a00289aa", kill_on_drop: false }`
[INFO] [stdout] 1e83c4b8488310bf0aa218edfb9ebb20725f993c54813b3cb23c0126a00289aa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 681d09784034bffabeccd47ce952cf5715f0826fcf08b53cb1bb536549e576cd
[INFO] running `Command { std: "docker" "start" "-a" "681d09784034bffabeccd47ce952cf5715f0826fcf08b53cb1bb536549e576cd", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling once_cell v1.19.0
[INFO] [stderr]    Compiling serde v1.0.210
[INFO] [stderr]    Compiling libc v0.2.158
[INFO] [stderr]    Compiling bitflags v2.6.0
[INFO] [stderr]    Compiling equivalent v1.0.1
[INFO] [stderr]    Compiling futures-core v0.3.30
[INFO] [stderr]    Compiling memchr v2.7.4
[INFO] [stderr]    Compiling ahash v0.8.11
[INFO] [stderr]    Compiling linux-raw-sys v0.4.14
[INFO] [stderr]    Compiling anyhow v1.0.87
[INFO] [stderr]    Compiling bytes v1.7.1
[INFO] [stderr]    Compiling log v0.4.22
[INFO] [stderr]    Compiling futures-sink v0.3.30
[INFO] [stderr]    Compiling slab v0.4.9
[INFO] [stderr]    Compiling pkg-config v0.3.30
[INFO] [stderr]    Compiling value-bag v1.9.0
[INFO] [stderr]    Compiling tracing-core v0.1.32
[INFO] [stderr]    Compiling zerocopy v0.7.35
[INFO] [stderr]    Compiling futures-io v0.3.30
[INFO] [stderr]    Compiling rustix v0.38.36
[INFO] [stderr]    Compiling leb128 v0.2.5
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling futures-channel v0.3.30
[INFO] [stderr]    Compiling semver v1.0.23
[INFO] [stderr]    Compiling concurrent-queue v2.5.0
[INFO] [stderr]    Compiling parking v2.2.0
[INFO] [stderr]    Compiling lock_api v0.4.12
[INFO] [stderr]    Compiling parking_lot_core v0.9.10
[INFO] [stderr]    Compiling cranelift-isle v0.111.0
[INFO] [stderr]    Compiling ipnet v2.9.0
[INFO] [stderr]    Compiling httparse v1.9.4
[INFO] [stderr]    Compiling event-listener v5.3.1
[INFO] [stderr]    Compiling cranelift-codegen-shared v0.111.0
[INFO] [stderr]    Compiling hashbrown v0.14.5
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]    Compiling serde_json v1.0.128
[INFO] [stderr]    Compiling fastrand v2.1.1
[INFO] [stderr]    Compiling rustc-demangle v0.1.24
[INFO] [stderr]    Compiling io-lifetimes v2.0.3
[INFO] [stderr]    Compiling syn v2.0.77
[INFO] [stderr]    Compiling event-listener-strategy v0.5.2
[INFO] [stderr]    Compiling target-lexicon v0.12.16
[INFO] [stderr]    Compiling sharded-slab v0.1.7
[INFO] [stderr]    Compiling cranelift-codegen-meta v0.111.0
[INFO] [stderr]    Compiling tinyvec v1.8.0
[INFO] [stderr]    Compiling block-buffer v0.10.4
[INFO] [stderr]    Compiling thread_local v1.1.8
[INFO] [stderr]    Compiling untrusted v0.9.0
[INFO] [stderr]    Compiling jobserver v0.1.32
[INFO] [stderr]    Compiling socket2 v0.5.7
[INFO] [stderr]    Compiling mio v1.0.2
[INFO] [stderr]    Compiling getrandom v0.2.15
[INFO] [stderr]    Compiling spin v0.9.8
[INFO] [stderr]    Compiling bumpalo v3.16.0
[INFO] [stderr]    Compiling percent-encoding v2.3.1
[INFO] [stderr]    Compiling cc v1.1.18
[INFO] [stderr]    Compiling thiserror v1.0.63
[INFO] [stderr]    Compiling tokio v1.40.0
[INFO] [stderr]    Compiling signal-hook-registry v1.4.2
[INFO] [stderr]    Compiling form_urlencoded v1.2.1
[INFO] [stderr]    Compiling futures-lite v2.3.0
[INFO] [stderr]    Compiling slice-group-by v0.3.1
[INFO] [stderr]    Compiling io-extras v0.18.2
[INFO] [stderr]    Compiling unicode-width v0.1.13
[INFO] [stderr]    Compiling futures-task v0.3.30
[INFO] [stderr]    Compiling unicode-bidi v0.3.15
[INFO] [stderr]    Compiling arbitrary v1.3.2
[INFO] [stderr]    Compiling cpufeatures v0.2.14
[INFO] [stderr]    Compiling unicode-normalization v0.1.23
[INFO] [stderr]    Compiling http v0.2.12
[INFO] [stderr]    Compiling encoding_rs v0.8.34
[INFO] [stderr]    Compiling futures-util v0.3.30
[INFO] [stderr]    Compiling rustls v0.21.12
[INFO] [stderr]    Compiling either v1.13.0
[INFO] [stderr]    Compiling async-task v4.7.1
[INFO] [stderr]    Compiling id-arena v2.2.1
[INFO] [stderr]    Compiling cranelift-control v0.111.0
[INFO] [stderr]    Compiling cap-primitives v3.2.0
[INFO] [stderr]    Compiling ambient-authority v0.0.2
[INFO] [stderr]    Compiling async-channel v2.3.1
[INFO] [stderr]    Compiling async-lock v3.4.0
[INFO] [stderr]    Compiling piper v0.2.4
[INFO] [stderr]    Compiling ring v0.17.8
[INFO] [stderr]    Compiling zstd-sys v2.0.13+zstd.1.5.6
[INFO] [stderr]    Compiling openssl-sys v0.9.103
[INFO] [stderr]    Compiling idna v0.5.0
[INFO] [stderr]    Compiling backtrace v0.3.71
[INFO] [stderr]    Compiling http v1.1.0
[INFO] [stderr]    Compiling crc32fast v1.4.2
[INFO] [stderr]    Compiling maybe-owned v0.3.4
[INFO] [stderr]    Compiling zstd-safe v7.2.1
[INFO] [stderr]    Compiling cobs v0.2.3
[INFO] [stderr]    Compiling gimli v0.28.1
[INFO] [stderr]    Compiling cpp_demangle v0.4.4
[INFO] [stderr]    Compiling miniz_oxide v0.7.4
[INFO] [stderr]    Compiling http-body v0.4.6
[INFO] [stderr]    Compiling blocking v1.6.1
[INFO] [stderr]    Compiling ittapi-sys v0.4.0
[INFO] [stderr]    Compiling async-executor v1.13.0
[INFO] [stderr]    Compiling dirs-sys v0.3.7
[INFO] [stderr]    Compiling crypto-common v0.1.6
[INFO] [stderr]    Compiling object v0.32.2
[INFO] [stderr]    Compiling eyre v0.6.12
[INFO] [stderr]    Compiling wasmtime-component-util v24.0.0
[INFO] [stderr]    Compiling regex-syntax v0.6.29
[INFO] [stderr]    Compiling event-listener v2.5.3
[INFO] [stderr]    Compiling unicode-xid v0.2.5
[INFO] [stderr]    Compiling adler2 v2.0.0
[INFO] [stderr]    Compiling owo-colors v3.5.0
[INFO] [stderr]    Compiling httpdate v1.0.3
[INFO] [stderr]    Compiling cap-std v3.2.0
[INFO] [stderr]    Compiling regex-syntax v0.8.4
[INFO] [stderr]    Compiling openssl v0.10.66
[INFO] [stderr]    Compiling cranelift-codegen v0.111.0
[INFO] [stderr]    Compiling winnow v0.6.18
[INFO] [stderr]    Compiling async-channel v1.9.0
[INFO] [stderr]    Compiling miniz_oxide v0.8.0
[INFO] [stderr]    Compiling http-body v1.0.1
[INFO] [stderr]    Compiling addr2line v0.21.0
[INFO] [stderr]    Compiling dirs v4.0.0
[INFO] [stderr]    Compiling digest v0.10.7
[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-2025-09-21-x86_64-unknown-linux-gnu/bin/rustc --crate-name syn --edition=2021 /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/syn-2.0.77/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=2c7bc0dd1eaa9392 -C extra-filename=-09927b372a7f632e --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-06f382f79c1fcafb.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-7bc88632c2fe2c55.rmeta --extern unicode_ident=/opt/rustwide/target/debug/deps/libunicode_ident-772f13ecc3fc189a.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" "681d09784034bffabeccd47ce952cf5715f0826fcf08b53cb1bb536549e576cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "681d09784034bffabeccd47ce952cf5715f0826fcf08b53cb1bb536549e576cd", kill_on_drop: false }`
[INFO] [stdout] 681d09784034bffabeccd47ce952cf5715f0826fcf08b53cb1bb536549e576cd
