[INFO] fetching crate skyhook 0.5.19...
[INFO] testing skyhook-0.5.19 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate skyhook 0.5.19 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate skyhook 0.5.19
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate skyhook 0.5.19
[INFO] tweaked toml for crates.io crate skyhook 0.5.19 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate skyhook 0.5.19 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 skyhook 0.5.19 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] 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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6266cc2f705f217a63e87f356bb548da7a2ccabc462f37e8d3e40cb9f3e62e54
[INFO] running `Command { std: "docker" "start" "-a" "6266cc2f705f217a63e87f356bb548da7a2ccabc462f37e8d3e40cb9f3e62e54", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6266cc2f705f217a63e87f356bb548da7a2ccabc462f37e8d3e40cb9f3e62e54", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6266cc2f705f217a63e87f356bb548da7a2ccabc462f37e8d3e40cb9f3e62e54", kill_on_drop: false }`
[INFO] [stdout] 6266cc2f705f217a63e87f356bb548da7a2ccabc462f37e8d3e40cb9f3e62e54
[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=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] a8f4c8fcc946e1bf39921aeaa85116f5c9214ce7fad750cfeb423c23d27761a7
[INFO] running `Command { std: "docker" "start" "-a" "a8f4c8fcc946e1bf39921aeaa85116f5c9214ce7fad750cfeb423c23d27761a7", kill_on_drop: false }`
[INFO] [stderr]    Compiling bitflags v2.9.1
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling allocator-api2 v0.2.21
[INFO] [stderr]    Compiling foldhash v0.1.5
[INFO] [stderr]    Compiling futures-io v0.3.31
[INFO] [stderr]    Compiling tracing-core v0.1.33
[INFO] [stderr]    Compiling lock_api v0.4.13
[INFO] [stderr]    Compiling syn v2.0.100
[INFO] [stderr]    Compiling jobserver v0.1.33
[INFO] [stderr]    Compiling getrandom v0.3.2
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling time-macros v0.2.22
[INFO] [stderr]    Compiling rustix v1.0.5
[INFO] [stderr]    Compiling semver v1.0.26
[INFO] [stderr]    Compiling linux-raw-sys v0.9.3
[INFO] [stderr]    Compiling serde_json v1.0.140
[INFO] [stderr]    Compiling hashbrown v0.15.5
[INFO] [stderr]    Compiling winnow v0.7.10
[INFO] [stderr]    Compiling signal-hook-registry v1.4.2
[INFO] [stderr]    Compiling socket2 v0.5.9
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling cc v1.2.18
[INFO] [stderr]    Compiling zstd-safe v7.2.4
[INFO] [stderr]    Compiling dunce v1.0.5
[INFO] [stderr]    Compiling rustix v0.38.44
[INFO] [stderr]    Compiling fs_extra v1.3.0
[INFO] [stderr]    Compiling cranelift-srcgen v0.122.0
[INFO] [stderr]    Compiling linux-raw-sys v0.4.15
[INFO] [stderr]    Compiling cranelift-assembler-x64-meta v0.122.0
[INFO] [stderr]    Compiling aws-lc-rs v1.13.3
[INFO] [stderr]    Compiling cranelift-isle v0.122.0
[INFO] [stderr]    Compiling heck v0.5.0
[INFO] [stderr]    Compiling cranelift-bitset v0.122.0
[INFO] [stderr]    Compiling bumpalo v3.17.0
[INFO] [stderr]    Compiling target-lexicon v0.13.2
[INFO] [stderr]    Compiling cranelift-codegen-shared v0.122.0
[INFO] [stderr]    Compiling rustc-hash v2.1.1
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling cmake v0.1.54
[INFO] [stderr]    Compiling io-lifetimes v2.0.4
[INFO] [stderr]    Compiling fastrand v2.3.0
[INFO] [stderr]    Compiling nom v7.1.3
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling wasmtime-internal-math v35.0.0
[INFO] [stderr]    Compiling leb128fmt v0.1.0
[INFO] [stderr]    Compiling arbitrary v1.4.1
[INFO] [stderr]    Compiling object v0.36.7
[INFO] [stderr]    Compiling rustc_version v0.4.1
[INFO] [stderr]    Compiling rand_core v0.9.3
[INFO] [stderr]    Compiling wasmparser v0.235.0
[INFO] [stderr]    Compiling parking v2.2.1
[INFO] [stderr]    Compiling io-extras v0.18.4
[INFO] [stderr]    Compiling zstd-sys v2.0.15+zstd.1.5.7
[INFO] [stderr]    Compiling aws-lc-sys v0.30.0
[INFO] [stderr]    Compiling ring v0.17.14
[INFO] [stderr]    Compiling rustls v0.23.29
[INFO] [stderr]    Compiling curve25519-dalek v4.1.3
[INFO] [stderr]    Compiling rand_chacha v0.9.0
[INFO] [stderr]    Compiling concurrent-queue v2.5.0
[INFO] [stderr]    Compiling ambient-authority v0.0.2
[INFO] [stderr]    Compiling cobs v0.2.3
[INFO] [stderr]    Compiling memchr v2.7.4
[INFO] [stderr]    Compiling cpp_demangle v0.4.4
[INFO] [stderr]    Compiling cap-primitives v3.4.4
[INFO] [stderr]    Compiling cranelift-control v0.122.0
[INFO] [stderr]    Compiling wasm-encoder v0.236.0
[INFO] [stderr]    Compiling wasm-encoder v0.235.0
[INFO] [stderr]    Compiling rand v0.9.2
[INFO] [stderr]    Compiling cranelift-assembler-x64 v0.122.0
[INFO] [stderr]    Compiling event-listener v5.4.0
[INFO] [stderr]    Compiling ittapi-sys v0.4.0
[INFO] [stderr]    Compiling ownedbytes v0.9.0
[INFO] [stderr]    Compiling alloc-no-stdlib v2.0.4
[INFO] [stderr]    Compiling id-arena v2.2.1
[INFO] [stderr]    Compiling wasmtime-internal-component-util v35.0.0
[INFO] [stderr]    Compiling maybe-owned v0.3.4
[INFO] [stderr]    Compiling toml_write v0.1.1
[INFO] [stderr]    Compiling leb128 v0.2.5
[INFO] [stderr]    Compiling prettyplease v0.2.34
[INFO] [stderr]    Compiling synstructure v0.13.1
[INFO] [stderr]    Compiling darling_core v0.21.0
[INFO] [stderr]    Compiling termcolor v1.4.1
[INFO] [stderr]    Compiling httpdate v1.0.3
[INFO] [stderr]    Compiling indexmap v2.9.0
[INFO] [stderr]    Compiling wast v35.0.2
[INFO] [stderr]    Compiling event-listener-strategy v0.5.4
[INFO] [stderr]    Compiling alloc-stdlib v0.2.2
[INFO] [stderr]    Compiling bitpacking v0.9.2
[INFO] [stderr]    Compiling toml_edit v0.22.26
[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-2.0.100/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="fold"' --cfg 'feature="full"' --cfg 'feature="parsing"' --cfg 'feature="printing"' --cfg 'feature="proc-macro"' --cfg 'feature="visit"' --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=4c26d68ed670d11f -C extra-filename=-b3873e3af62eb4ea --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-476290cbe1d6f95e.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-b7bdb8b4a7e2aef2.rmeta --extern unicode_ident=/opt/rustwide/target/debug/deps/libunicode_ident-958b805d9ab3f4fe.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" "a8f4c8fcc946e1bf39921aeaa85116f5c9214ce7fad750cfeb423c23d27761a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a8f4c8fcc946e1bf39921aeaa85116f5c9214ce7fad750cfeb423c23d27761a7", kill_on_drop: false }`
[INFO] [stdout] a8f4c8fcc946e1bf39921aeaa85116f5c9214ce7fad750cfeb423c23d27761a7