[INFO] fetching crate akar-graph 0.1.18...
[INFO] testing akar-graph-0.1.18 against 1.99.0-beta.1+cargoflags=--release for beta-release-1.99-2
[INFO] extracting crate akar-graph 0.1.18 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate akar-graph 0.1.18
[INFO] finished tweaking crates.io crate akar-graph 0.1.18
[INFO] tweaked toml for crates.io crate akar-graph 0.1.18 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate akar-graph 0.1.18 on toolchain 1.99.0-beta.1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate akar-graph 0.1.18 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" "+1.99.0-beta.1" "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/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:8683fc1fc2eb5c9ac98e0d076ab094b2ffac7f99da555d2b6a2e27f346de2ec7" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] edfff83564ce1d15bed9555782195d67ba67709d93a32812475f43eb38b78c8d
[INFO] running `Command { std: "docker" "start" "edfff83564ce1d15bed9555782195d67ba67709d93a32812475f43eb38b78c8d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "edfff83564ce1d15bed9555782195d67ba67709d93a32812475f43eb38b78c8d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "edfff83564ce1d15bed9555782195d67ba67709d93a32812475f43eb38b78c8d" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "edfff83564ce1d15bed9555782195d67ba67709d93a32812475f43eb38b78c8d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "edfff83564ce1d15bed9555782195d67ba67709d93a32812475f43eb38b78c8d" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.1" "build" "--frozen" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.107
[INFO] [stderr]    Compiling quote v1.0.47
[INFO] [stderr]    Compiling autocfg v1.5.1
[INFO] [stderr]    Compiling libm v0.2.16
[INFO] [stderr]    Compiling libc v0.2.189
[INFO] [stderr]    Compiling zerocopy v0.8.56
[INFO] [stderr]    Compiling serde_core v1.0.229
[INFO] [stderr]    Compiling once_cell v1.21.4
[INFO] [stderr]    Compiling arrow-schema v59.2.0
[INFO] [stderr]    Compiling foldhash v0.2.0
[INFO] [stderr]    Compiling ahash v0.8.12
[INFO] [stderr]    Compiling memchr v2.8.3
[INFO] [stderr]    Compiling lexical-util v1.0.7
[INFO] [stderr]    Compiling crossbeam-utils v0.8.22
[INFO] [stderr]    Compiling semver v1.0.28
[INFO] [stderr]    Compiling regex-syntax v0.8.11
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.20
[INFO] [stderr]    Compiling unicode-segmentation v1.13.3
[INFO] [stderr]    Compiling base64 v0.23.1
[INFO] [stderr]    Compiling crossbeam-deque v0.8.7
[INFO] [stderr]    Compiling bitflags v2.13.1
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling rustc_version v0.4.1
[INFO] [stderr]    Compiling crc32fast v1.5.1
[INFO] [stderr]    Compiling lexical-write-integer v1.0.6
[INFO] [stderr]    Compiling lexical-parse-integer v1.0.6
[INFO] [stderr]    Compiling simd-adler32 v0.3.10
[INFO] [stderr]    Compiling flatbuffers v25.12.19
[INFO] [stderr]    Compiling portable-atomic v1.15.0
[INFO] [stderr]    Compiling comfy-table v7.2.2
[INFO] [stderr]    Compiling lexical-parse-float v1.0.6
[INFO] [stderr]    Compiling aho-corasick v1.1.5
[INFO] [stderr]    Compiling lexical-write-float v1.0.6
[INFO] [stderr]    Compiling csv-core v0.1.13
[INFO] [stderr]    Compiling typenum v1.20.1
[INFO] [stderr]    Compiling syn v2.0.119
[INFO] [stderr]    Compiling syn v3.0.4
[INFO] [stderr]    Compiling lexical-core v1.0.6
[INFO] [stderr]    Compiling miniz_oxide v0.9.1
[INFO] [stderr]    Compiling rayon-core v1.13.0
[INFO] [stderr]    Compiling getrandom v0.3.4
[INFO] [stderr]    Compiling console v0.16.4
[INFO] [stderr]    Compiling unit-prefix v0.5.2
[INFO] [stderr]    Compiling either v1.18.0
[INFO] [stderr]    Compiling const-oid v0.10.2
[INFO] [stderr]    Compiling hybrid-array v0.4.14
[INFO] [stderr]    Compiling tracing-core v0.1.36
[INFO] [stderr]    Compiling time-core v0.1.9
[INFO] [stderr]    Compiling flate2 v1.1.10
[INFO] [stderr]    Compiling block-buffer v0.12.1
[INFO] [stderr]    Compiling crypto-common v0.2.2
[INFO] [stderr]    Compiling num-integer v0.1.47
[INFO] [stderr]    Compiling chrono v0.4.45
[INFO] [stderr]    Compiling num-complex v0.4.6
[INFO] [stderr]    Compiling num-bigint v0.5.1
[INFO] [stderr]    Compiling regex-automata v0.4.18
[INFO] [stderr]    Compiling atoi v2.0.0
[INFO] [stderr]    Compiling indicatif v0.18.6
[INFO] [stderr]    Compiling rayon v1.12.0
[INFO] [stderr]    Compiling pin-project-lite v0.2.17
[INFO] [stderr]    Compiling num-conv v0.2.2
[INFO] [stderr]    Compiling cpufeatures v0.3.1
[INFO] [stderr]    Compiling deranged v0.5.8
[INFO] [stderr]    Compiling alloc-stdlib v0.2.4
[INFO] [stderr]    Compiling snap v1.1.2
[INFO] [stderr]    Compiling brotli-decompressor v5.0.3
[INFO] [stderr]    Compiling smallvec v1.15.2
[INFO] [stderr]    Compiling digest v0.11.3
[INFO] [stderr]    Compiling twox-hash v2.1.4
[INFO] [stderr]    Compiling hashbrown v0.17.1
[INFO] [stderr]    Compiling csv v1.4.0
[INFO] [stderr]    Compiling serde_json v1.0.151
[INFO] [stderr]    Compiling sha2 v0.11.0
[INFO] [stderr]    Compiling serde_derive v1.0.229
[INFO] [stderr]    Compiling md-5 v0.11.0
[INFO] [stderr]    Compiling brotli v8.0.4
[INFO] [stderr]    Compiling lz4_flex v0.14.0
[INFO] [stderr]    Compiling time v0.3.55
[INFO] [stderr]    Compiling parking_lot_core v0.9.12
[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/1.99.0-beta.1-x86_64-unknown-linux-gnu/bin/rustc --crate-name syn --edition=2021 /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/syn-2.0.119/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 -C debug-assertions=off --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=d282e951f3f0936c -C extra-filename=-9debc0f1dc78aeb5 --out-dir /opt/rustwide/target/release/deps -C strip=debuginfo -L dependency=/opt/rustwide/target/release/deps --extern proc_macro2=/opt/rustwide/target/release/deps/libproc_macro2-58bd5a67493b0c92.rmeta --extern quote=/opt/rustwide/target/release/deps/libquote-bb159eae73371f0d.rmeta --extern unicode_ident=/opt/rustwide/target/release/deps/libunicode_ident-3d1450b03eaa80c7.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" "edfff83564ce1d15bed9555782195d67ba67709d93a32812475f43eb38b78c8d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "edfff83564ce1d15bed9555782195d67ba67709d93a32812475f43eb38b78c8d", kill_on_drop: false }`
[INFO] [stdout] edfff83564ce1d15bed9555782195d67ba67709d93a32812475f43eb38b78c8d
