[INFO] cloning repository https://github.com/Liangdi/candle-mnist-demo
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Liangdi/candle-mnist-demo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLiangdi%2Fcandle-mnist-demo", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLiangdi%2Fcandle-mnist-demo'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2c1aee285c8cd449025623ca4977cda89df86a34
[INFO] testing Liangdi/candle-mnist-demo against beta-2026-01-20 for beta-1.94-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLiangdi%2Fcandle-mnist-demo" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Liangdi/candle-mnist-demo
[INFO] finished tweaking git repo https://github.com/Liangdi/candle-mnist-demo
[INFO] tweaked toml for git repo https://github.com/Liangdi/candle-mnist-demo written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Liangdi/candle-mnist-demo on toolchain beta-2026-01-20
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-01-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Liangdi/candle-mnist-demo 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-2026-01-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-01-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9d4b8c12122ab0c811000ac645f450e161f0fcb68dd838e177488cebbd99c65d
[INFO] running `Command { std: "docker" "start" "-a" "9d4b8c12122ab0c811000ac645f450e161f0fcb68dd838e177488cebbd99c65d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9d4b8c12122ab0c811000ac645f450e161f0fcb68dd838e177488cebbd99c65d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9d4b8c12122ab0c811000ac645f450e161f0fcb68dd838e177488cebbd99c65d", kill_on_drop: false }`
[INFO] [stdout] 9d4b8c12122ab0c811000ac645f450e161f0fcb68dd838e177488cebbd99c65d
[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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-01-20" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7a67eddb93410c2f8ae58c6e7bc52b4fdb56eb9a5469b841774caca435903bff
[INFO] running `Command { std: "docker" "start" "-a" "7a67eddb93410c2f8ae58c6e7bc52b4fdb56eb9a5469b841774caca435903bff", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.149
[INFO] [stderr]    Compiling proc-macro2 v1.0.69
[INFO] [stderr]    Compiling libm v0.2.8
[INFO] [stderr]    Compiling pkg-config v0.3.27
[INFO] [stderr]    Compiling crossbeam-utils v0.8.16
[INFO] [stderr]    Compiling once_cell v1.18.0
[INFO] [stderr]    Compiling paste v1.0.14
[INFO] [stderr]    Compiling either v1.9.0
[INFO] [stderr]    Compiling rayon-core v1.12.0
[INFO] [stderr]    Compiling num-traits v0.2.17
[INFO] [stderr]    Compiling memoffset v0.9.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.15
[INFO] [stderr]    Compiling num-bigint v0.4.4
[INFO] [stderr]    Compiling crc32fast v1.3.2
[INFO] [stderr]    Compiling bytemuck v1.14.0
[INFO] [stderr]    Compiling serde v1.0.190
[INFO] [stderr]    Compiling reborrow v0.5.5
[INFO] [stderr]    Compiling seq-macro v0.3.5
[INFO] [stderr]    Compiling raw-cpuid v10.7.0
[INFO] [stderr]    Compiling lexical-util v0.8.5
[INFO] [stderr]    Compiling semver v1.0.20
[INFO] [stderr]    Compiling serde_json v1.0.108
[INFO] [stderr]    Compiling dyn-stack v0.9.1
[INFO] [stderr]    Compiling ahash v0.8.6
[INFO] [stderr]    Compiling unicode-xid v0.2.4
[INFO] [stderr]    Compiling memchr v2.6.4
[INFO] [stderr]    Compiling log v0.4.20
[INFO] [stderr]    Compiling adler v1.0.2
[INFO] [stderr]    Compiling ryu v1.0.15
[INFO] [stderr]    Compiling itoa v1.0.9
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]    Compiling miniz_oxide v0.7.1
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling spin v0.9.8
[INFO] [stderr]    Compiling arrow-schema v45.0.0
[INFO] [stderr]    Compiling untrusted v0.9.0
[INFO] [stderr]    Compiling zerocopy v0.7.21
[INFO] [stderr]    Compiling iana-time-zone v0.1.58
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]    Compiling lexical-parse-integer v0.8.6
[INFO] [stderr]    Compiling lexical-write-integer v0.8.5
[INFO] [stderr]    Compiling hashbrown v0.14.2
[INFO] [stderr]    Compiling openssl v0.10.57
[INFO] [stderr]    Compiling syn v2.0.38
[INFO] [stderr]    Compiling jobserver v0.1.27
[INFO] [stderr]    Compiling getrandom v0.2.10
[INFO] [stderr]    Compiling crossbeam-deque v0.8.3
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling flate2 v1.0.28
[INFO] [stderr]    Compiling flatbuffers v23.5.26
[INFO] [stderr]    Compiling cc v1.0.83
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling lexical-write-float v0.8.5
[INFO] [stderr]    Compiling lexical-parse-float v0.8.5
[INFO] [stderr]    Compiling unicode-normalization v0.1.22
[INFO] [stderr]    Compiling alloc-no-stdlib v2.0.4
[INFO] [stderr]    Compiling num-complex v0.4.4
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling chrono v0.4.31
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling zstd-safe v6.0.6
[INFO] [stderr]    Compiling rustls v0.21.8
[INFO] [stderr]    Compiling unicode-bidi v0.3.13
[INFO] [stderr]    Compiling percent-encoding v2.3.0
[INFO] [stderr]    Compiling bitflags v2.4.1
[INFO] [stderr]    Compiling portable-atomic v1.5.1
[INFO] [stderr]    Compiling form_urlencoded v1.2.0
[INFO] [stderr]    Compiling lexical-core v0.8.5
[INFO] [stderr]    Compiling alloc-stdlib v0.2.2
[INFO] [stderr]    Compiling aho-corasick v1.1.2
[INFO] [stderr]    Compiling rayon v1.8.0
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]    Compiling unicode-width v0.1.11
[INFO] [stderr]    Compiling option-ext v0.2.0
[INFO] [stderr]    Compiling regex-syntax v0.8.2
[INFO] [stderr]    Compiling idna v0.4.0
[INFO] [stderr]    Compiling snap v1.1.0
[INFO] [stderr]    Compiling base64 v0.21.5
[INFO] [stderr]    Compiling esaxx-rs v0.1.10
[INFO] [stderr]    Compiling rand_distr v0.4.3
[INFO] [stderr]    Compiling smallvec v1.11.1
[INFO] [stderr]    Compiling nom v7.1.3
[INFO] [stderr]    Compiling console v0.15.7
[INFO] [stderr]    Compiling url v2.4.1
[INFO] [stderr]    Compiling dirs-sys v0.4.1
[INFO] [stderr]    Compiling ring v0.17.5
[INFO] [stderr]    Compiling half v2.3.1
[INFO] [stderr]    Compiling openssl-sys v0.9.93
[INFO] [stderr]    Compiling zstd-sys v2.0.9+zstd.1.5.5
[INFO] [stderr]    Compiling onig_sys v69.8.1
[INFO] [stderr]    Compiling lz4-sys v1.9.4
[INFO] [stderr]    Compiling brotli-decompressor v2.5.1
[INFO] [stderr]    Compiling num-rational v0.4.1
[INFO] [stderr]    Compiling native-tls v0.2.11
[INFO] [stderr]    Compiling memmap2 v0.7.1
[INFO] [stderr]    Compiling ordered-float v2.10.1
[INFO] [stderr]    Compiling num v0.4.1
[INFO] [stderr]    Compiling arrow-buffer v45.0.0
[INFO] [stderr]    Compiling num_cpus v1.16.0
[INFO] [stderr]    Compiling zip v0.6.6
[INFO] [stderr]    Compiling regex-automata v0.4.3
[INFO] [stderr]    Compiling fdeflate v0.3.1
[INFO] [stderr]    Compiling candle-gemm-common v0.16.0
[INFO] [stderr]    Compiling arrow-data v45.0.0
[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-2026-01-20-x86_64-unknown-linux-gnu/bin/rustc --crate-name syn --edition=2021 /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/syn-2.0.38/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="quote"' --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", "quote", "test", "visit", "visit-mut"))' -C metadata=c572e89d3f5b39ee -C extra-filename=-1d393b1afad77e9e --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-64889c43778b9ffc.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-cf9f9f2f3b821e71.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" "7a67eddb93410c2f8ae58c6e7bc52b4fdb56eb9a5469b841774caca435903bff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7a67eddb93410c2f8ae58c6e7bc52b4fdb56eb9a5469b841774caca435903bff", kill_on_drop: false }`
[INFO] [stdout] 7a67eddb93410c2f8ae58c6e7bc52b4fdb56eb9a5469b841774caca435903bff
