[INFO] fetching crate arbiter-engine 0.4.0...
[INFO] checking arbiter-engine-0.4.0 against 1.95.0-beta.7 for beta-1.95-4
[INFO] extracting crate arbiter-engine 0.4.0 into /workspace/builds/worker-4-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-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate arbiter-engine 0.4.0 on toolchain 1.95.0-beta.7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0-beta.7" "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" "+1.95.0-beta.7" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 590 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: v1.1.2+spec-1.1.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0-beta.7" "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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+1.95.0-beta.7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3aebd98b74e1edba0a53b7dafd58014b7bf32f1ab8200f59877f75c4ba60633c
[INFO] running `Command { std: "docker" "start" "-a" "3aebd98b74e1edba0a53b7dafd58014b7bf32f1ab8200f59877f75c4ba60633c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3aebd98b74e1edba0a53b7dafd58014b7bf32f1ab8200f59877f75c4ba60633c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3aebd98b74e1edba0a53b7dafd58014b7bf32f1ab8200f59877f75c4ba60633c", kill_on_drop: false }`
[INFO] [stdout] 3aebd98b74e1edba0a53b7dafd58014b7bf32f1ab8200f59877f75c4ba60633c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+1.95.0-beta.7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7d0aa5a547a77be3b3aec4bc79ec98db3918cb809c1229f09f454ec25d36f7b8
[INFO] running `Command { std: "docker" "start" "-a" "7d0aa5a547a77be3b3aec4bc79ec98db3918cb809c1229f09f454ec25d36f7b8", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.106
[INFO] [stderr]    Compiling quote v1.0.45
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling indexmap v2.13.1
[INFO] [stderr]     Checking subtle v2.6.1
[INFO] [stderr]    Compiling winnow v1.0.1
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling toml_datetime v1.1.1+spec-1.1.0
[INFO] [stderr]    Compiling crunchy v0.2.4
[INFO] [stderr]     Checking smallvec v1.15.1
[INFO] [stderr]    Compiling parity-scale-codec v3.7.5
[INFO] [stderr]     Checking bitflags v2.11.0
[INFO] [stderr]     Checking regex-automata v0.4.14
[INFO] [stderr]    Compiling tiny-keccak v2.0.2
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]    Compiling zeroize v1.8.2
[INFO] [stderr]    Compiling getrandom v0.2.17
[INFO] [stderr]    Compiling serde_json v1.0.149
[INFO] [stderr]    Compiling rustix v1.1.4
[INFO] [stderr]     Checking parking_lot_core v0.9.12
[INFO] [stderr]     Checking unicode-ident v1.0.24
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling const-oid v0.9.6
[INFO] [stderr]     Checking parking_lot v0.12.5
[INFO] [stderr]     Checking ff v0.13.1
[INFO] [stderr]    Compiling camino v1.2.2
[INFO] [stderr]     Checking byte-slice-cast v1.2.3
[INFO] [stderr]     Checking base16ct v0.2.0
[INFO] [stderr]     Checking group v0.13.0
[INFO] [stderr]     Checking errno v0.3.14
[INFO] [stderr]    Compiling zerocopy v0.8.48
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.117
[INFO] [stderr]     Checking futures-task v0.3.32
[INFO] [stderr]     Checking fixed-hash v0.8.0
[INFO] [stderr]     Checking signal-hook-registry v1.4.8
[INFO] [stderr]     Checking ring v0.17.14
[INFO] [stderr]     Checking uint v0.9.5
[INFO] [stderr]     Checking const-hex v1.18.1
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling rustc-hex v2.1.0
[INFO] [stderr]    Compiling arrayvec v0.7.6
[INFO] [stderr]    Compiling const_format_proc_macros v0.2.34
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]    Compiling rustls v0.21.12
[INFO] [stderr]    Compiling smartstring v1.0.1
[INFO] [stderr]     Checking lazy_static v1.5.0
[INFO] [stderr]    Compiling toml_parser v1.1.2+spec-1.1.0
[INFO] [stderr]    Compiling crypto-common v0.1.7
[INFO] [stderr]    Compiling block-buffer v0.10.4
[INFO] [stderr]    Compiling digest v0.10.7
[INFO] [stderr]     Checking num-bigint v0.4.6
[INFO] [stderr]     Checking getrandom v0.4.2
[INFO] [stderr]    Compiling der v0.7.10
[INFO] [stderr]     Checking semver v1.0.28
[INFO] [stderr]    Compiling polars-utils v0.38.3
[INFO] [stderr]    Compiling bumpalo v3.20.2
[INFO] [stderr]     Checking fastrand v2.4.1
[INFO] [stderr]     Checking const_format v0.2.35
[INFO] [stderr]    Compiling toml_edit v0.25.10+spec-1.1.0
[INFO] [stderr]    Compiling aho-corasick v1.1.4
[INFO] [stderr]     Checking regex v1.12.3
[INFO] [stderr]     Checking raw-cpuid v11.6.0
[INFO] [stderr]    Compiling wasm-bindgen v0.2.117
[INFO] [stderr]    Compiling polars-arrow v0.38.3
[INFO] [stderr]    Compiling proc-macro-crate v3.5.0
[INFO] [stderr]    Compiling regex-syntax v0.8.10
[INFO] [stderr]     Checking wyz v0.5.1
[INFO] [stderr]     Checking rustls-webpki v0.101.7
[INFO] [stderr]     Checking sct v0.7.1
[INFO] [stderr]     Checking tempfile v3.27.0
[INFO] [stderr]    Compiling hmac v0.12.1
[INFO] [stderr]    Compiling crypto-bigint v0.5.5
[INFO] [stderr]     Checking socket2 v0.5.10
[INFO] [stderr]    Compiling eyre v0.6.12
[INFO] [stderr]    Compiling thiserror v2.0.18
[INFO] [stderr]    Compiling prettyplease v0.2.37
[INFO] [stderr]     Checking foreign_vec v0.1.0
[INFO] [stderr]    Compiling sec1 v0.7.3
[INFO] [stderr]    Compiling itoa v1.0.18
[INFO] [stderr]    Compiling time-macros v0.2.27
[INFO] [stderr]    Compiling spki v0.7.3
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling rfc6979 v0.4.0
[INFO] [stderr]    Compiling signature v2.2.0
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]    Compiling keccak v0.1.6
[INFO] [stderr]    Compiling linux-raw-sys v0.12.1
[INFO] [stderr]     Checking lexical-util v1.0.7
[INFO] [stderr]    Compiling zstd-sys v2.0.16+zstd.1.5.7
[INFO] [stderr]    Compiling sha3 v0.10.8
[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/1.95.0-beta.7-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="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=a4b60958684ad417 -C extra-filename=-1a0cf4edb148b621 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-8929691e3c507c93.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-3b8e60d0e09f665a.rmeta --extern unicode_ident=/opt/rustwide/target/debug/deps/libunicode_ident-86faa6b6bcc5b157.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 `serde_core` (lib)
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/1.95.0-beta.7-x86_64-unknown-linux-gnu/bin/rustc --crate-name serde_core --edition=2021 /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/serde_core-1.0.228/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="alloc"' --cfg 'feature="default"' --cfg 'feature="result"' --cfg 'feature="std"' --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values("alloc", "default", "rc", "result", "std", "unstable"))' -C metadata=8e115c2b46639720 -C extra-filename=-a89777585d3a857e --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --cap-lints allow --cap-lints=warn --check-cfg 'cfg(if_docsrs_then_no_serde_core)' --check-cfg 'cfg(no_core_cstr)' --check-cfg 'cfg(no_core_error)' --check-cfg 'cfg(no_core_net)' --check-cfg 'cfg(no_core_num_saturating)' --check-cfg 'cfg(no_diagnostic_namespace)' --check-cfg 'cfg(no_serde_derive)' --check-cfg 'cfg(no_std_atomic)' --check-cfg 'cfg(no_std_atomic64)' --check-cfg 'cfg(no_target_has_atomic)'` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "7d0aa5a547a77be3b3aec4bc79ec98db3918cb809c1229f09f454ec25d36f7b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7d0aa5a547a77be3b3aec4bc79ec98db3918cb809c1229f09f454ec25d36f7b8", kill_on_drop: false }`
[INFO] [stdout] 7d0aa5a547a77be3b3aec4bc79ec98db3918cb809c1229f09f454ec25d36f7b8
