[INFO] fetching crate arbiter-engine 0.4.0...
[INFO] checking arbiter-engine-0.4.0 against try#5ff93158e08fa2205cd4b86cddf9eae95952cc96 for pr-129543-2
[INFO] extracting crate arbiter-engine 0.4.0 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate arbiter-engine 0.4.0
[INFO] finished tweaking crates.io crate arbiter-engine 0.4.0
[INFO] tweaked toml for crates.io crate arbiter-engine 0.4.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate arbiter-engine 0.4.0 on toolchain 5ff93158e08fa2205cd4b86cddf9eae95952cc96
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5ff93158e08fa2205cd4b86cddf9eae95952cc96" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5ff93158e08fa2205cd4b86cddf9eae95952cc96" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 585 packages to latest compatible versions
[INFO] [stderr]       Adding generic-array v0.14.7 (available: v0.14.9)
[INFO] [stderr]       Adding solang-parser v0.3.3 (available: v0.3.5)
[INFO] [stderr]       Adding thiserror v1.0.69 (available: v2.0.18)
[INFO] [stderr]       Adding toml v0.8.23 (available: v0.9.11+spec-1.1.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5ff93158e08fa2205cd4b86cddf9eae95952cc96" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+5ff93158e08fa2205cd4b86cddf9eae95952cc96" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ef636bfd14bbf76fe5e98a834ddef7e19adb895b3055e6a40683d8469f9f3078
[INFO] running `Command { std: "docker" "start" "-a" "ef636bfd14bbf76fe5e98a834ddef7e19adb895b3055e6a40683d8469f9f3078", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ef636bfd14bbf76fe5e98a834ddef7e19adb895b3055e6a40683d8469f9f3078", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef636bfd14bbf76fe5e98a834ddef7e19adb895b3055e6a40683d8469f9f3078", kill_on_drop: false }`
[INFO] [stdout] ef636bfd14bbf76fe5e98a834ddef7e19adb895b3055e6a40683d8469f9f3078
[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=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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+5ff93158e08fa2205cd4b86cddf9eae95952cc96" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b654eac4204eab91ff22ea6058377f941b325728ff6c7f6c68be767883bd215b
[INFO] running `Command { std: "docker" "start" "-a" "b654eac4204eab91ff22ea6058377f941b325728ff6c7f6c68be767883bd215b", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.106
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling winnow v0.7.14
[INFO] [stderr]    Compiling hashbrown v0.16.1
[INFO] [stderr]    Compiling toml_datetime v0.7.5+spec-1.1.0
[INFO] [stderr]    Compiling crunchy v0.2.4
[INFO] [stderr]    Compiling parity-scale-codec v3.7.5
[INFO] [stderr]     Checking regex-automata v0.4.13
[INFO] [stderr]    Compiling tiny-keccak v2.0.2
[INFO] [stderr]    Compiling zeroize v1.8.2
[INFO] [stderr]    Compiling getrandom v0.2.17
[INFO] [stderr]     Checking chrono v0.4.43
[INFO] [stderr]    Compiling serde_json v1.0.149
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]     Checking rustc-hex v2.1.0
[INFO] [stderr]    Compiling rustix v1.1.3
[INFO] [stderr]    Compiling subtle v2.6.1
[INFO] [stderr]    Compiling const-oid v0.9.6
[INFO] [stderr]     Checking ff v0.13.1
[INFO] [stderr]     Checking fixed-hash v0.8.0
[INFO] [stderr]    Compiling zerocopy v0.8.33
[INFO] [stderr]     Checking futures-task v0.3.31
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.108
[INFO] [stderr]     Checking ring v0.17.14
[INFO] [stderr]     Checking uint v0.9.5
[INFO] [stderr]    Compiling byte-slice-cast v1.2.3
[INFO] [stderr]     Checking group v0.13.0
[INFO] [stderr]    Compiling arrayvec v0.7.6
[INFO] [stderr]    Compiling quote v1.0.43
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]    Compiling block-buffer v0.10.4
[INFO] [stderr]    Compiling crypto-common v0.1.7
[INFO] [stderr]    Compiling static_assertions v1.1.0
[INFO] [stderr]    Compiling rustls v0.21.12
[INFO] [stderr]    Compiling smartstring v1.0.1
[INFO] [stderr]    Compiling digest v0.10.7
[INFO] [stderr]    Compiling der v0.7.10
[INFO] [stderr]    Compiling syn v2.0.114
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling const_format_proc_macros v0.2.34
[INFO] [stderr]    Compiling indexmap v2.13.0
[INFO] [stderr]     Checking num-bigint v0.4.6
[INFO] [stderr]    Compiling polars-utils v0.38.3
[INFO] [stderr]    Compiling aho-corasick v1.1.4
[INFO] [stderr]    Compiling wasm-bindgen v0.2.108
[INFO] [stderr]    Compiling polars-arrow v0.38.3
[INFO] [stderr]    Compiling base16ct v0.2.0
[INFO] [stderr]    Compiling regex-syntax v0.8.8
[INFO] [stderr]     Checking unicode-xid v0.2.6
[INFO] [stderr]     Checking const_format v0.2.35
[INFO] [stderr]    Compiling hmac v0.12.1
[INFO] [stderr]     Checking rustls-webpki v0.101.7
[INFO] [stderr]     Checking sct v0.7.1
[INFO] [stderr]    Compiling sec1 v0.7.3
[INFO] [stderr]    Compiling crypto-bigint v0.5.5
[INFO] [stderr]    Compiling zmij v1.0.16
[INFO] [stderr]     Checking socket2 v0.5.10
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling toml_parser v1.0.6+spec-1.1.0
[INFO] [stderr]     Checking foreign_vec v0.1.0
[INFO] [stderr]     Checking bitflags v2.10.0
[INFO] [stderr]     Checking const-hex v1.17.0
[INFO] [stderr]    Compiling ppv-lite86 v0.2.21
[INFO] [stderr]     Checking regex v1.12.2
[INFO] [stderr]     Checking semver v1.0.27
[INFO] [stderr]     Checking camino v1.2.2
[INFO] [stderr]     Checking raw-cpuid v11.6.0
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling prettyplease v0.2.37
[INFO] [stderr]    Compiling thiserror v2.0.18
[INFO] [stderr]    Compiling toml_edit v0.23.10+spec-1.0.0
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling rfc6979 v0.4.0
[INFO] [stderr]    Compiling spki v0.7.3
[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/5ff93158e08fa2205cd4b86cddf9eae95952cc96/bin/rustc --crate-name syn --edition=2018 /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/syn-1.0.109/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="quote"' --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", "quote", "test", "visit", "visit-mut"))' -C metadata=9b39aa93c5d416a3 -C extra-filename=-fbcddbfe50712457 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-d957b276a0591069.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-a154bf973ac4e580.rmeta --extern unicode_ident=/opt/rustwide/target/debug/deps/libunicode_ident-9533002ac35f5809.rmeta --cap-lints allow --cap-lints=forbid` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "b654eac4204eab91ff22ea6058377f941b325728ff6c7f6c68be767883bd215b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b654eac4204eab91ff22ea6058377f941b325728ff6c7f6c68be767883bd215b", kill_on_drop: false }`
[INFO] [stdout] b654eac4204eab91ff22ea6058377f941b325728ff6c7f6c68be767883bd215b