[INFO] cloning repository https://github.com/dirdr/digit_recognizer_mnist
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dirdr/digit_recognizer_mnist" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdirdr%2Fdigit_recognizer_mnist", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdirdr%2Fdigit_recognizer_mnist'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] efec8500e89f7cba65bea43c638f453bafef2783
[INFO] checking dirdr/digit_recognizer_mnist against master#23718020b12d7e5a54f82a19910e8356ee719667 for pr-146013-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdirdr%2Fdigit_recognizer_mnist" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/dirdr/digit_recognizer_mnist
[INFO] finished tweaking git repo https://github.com/dirdr/digit_recognizer_mnist
[INFO] tweaked toml for git repo https://github.com/dirdr/digit_recognizer_mnist written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/dirdr/digit_recognizer_mnist on toolchain 23718020b12d7e5a54f82a19910e8356ee719667
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+23718020b12d7e5a54f82a19910e8356ee719667" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/dirdr/digit_recognizer_mnist 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" "+23718020b12d7e5a54f82a19910e8356ee719667" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pretty_env_logger v0.5.0
[INFO] [stderr]   Downloaded bitstream-io v2.3.0
[INFO] [stderr]   Downloaded zune-jpeg v0.4.11
[INFO] [stderr]   Downloaded thiserror-impl v1.0.60
[INFO] [stderr]   Downloaded objc-sys v0.3.3
[INFO] [stderr]   Downloaded document-features v0.2.8
[INFO] [stderr]   Downloaded objc2-encode v4.0.1
[INFO] [stderr]   Downloaded anstyle v1.0.7
[INFO] [stderr]   Downloaded objc2-core-data v0.2.0
[INFO] [stderr]   Downloaded anyhow v1.0.83
[INFO] [stderr]   Downloaded ravif v0.11.5
[INFO] [stderr]   Downloaded serde v1.0.202
[INFO] [stderr]   Downloaded safe_arch v0.7.1
[INFO] [stderr]   Downloaded objc2 v0.5.1
[INFO] [stderr]   Downloaded syn v2.0.64
[INFO] [stderr]   Downloaded ndarray v0.15.6
[INFO] [stderr]   Downloaded objc2-foundation v0.2.0
[INFO] [stderr]   Downloaded cc v1.0.97
[INFO] [stderr]   Downloaded wide v0.7.21
[INFO] [stderr]   Downloaded nalgebra v0.32.5
[INFO] [stderr]   Downloaded imageproc v0.25.0
[INFO] [stderr]   Downloaded block2 v0.5.0
[INFO] [stderr]   Downloaded raw-window-handle v0.6.1
[INFO] [stderr]   Downloaded ndarray-stats v0.5.1
[INFO] [stderr]   Downloaded proc-macro2 v1.0.82
[INFO] [stderr]   Downloaded anstyle-query v1.0.3
[INFO] [stderr]   Downloaded colorchoice v1.0.1
[INFO] [stderr]   Downloaded image-webp v0.1.2
[INFO] [stderr]   Downloaded target-lexicon v0.12.14
[INFO] [stderr]   Downloaded serde_derive v1.0.202
[INFO] [stderr]   Downloaded anstyle-parse v0.2.4
[INFO] [stderr]   Downloaded anstyle-wincon v3.0.3
[INFO] [stderr]   Downloaded is_terminal_polyfill v1.70.0
[INFO] [stderr]   Downloaded bytemuck_derive v1.6.0
[INFO] [stderr]   Downloaded objc2-app-kit v0.2.0
[INFO] [stderr]   Downloaded ndarray-rand v0.14.0
[INFO] [stderr]   Downloaded thread-tree v0.3.3
[INFO] [stderr]   Downloaded noisy_float v0.2.0
[INFO] [stderr]   Downloaded thiserror v1.0.60
[INFO] [stderr]   Downloaded anstream v0.6.14
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "+23718020b12d7e5a54f82a19910e8356ee719667" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0fc81e346381628cf769ebc42dffacacb15b12f8293b72afae2c3d0607a463cc
[INFO] running `Command { std: "docker" "start" "-a" "0fc81e346381628cf769ebc42dffacacb15b12f8293b72afae2c3d0607a463cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0fc81e346381628cf769ebc42dffacacb15b12f8293b72afae2c3d0607a463cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0fc81e346381628cf769ebc42dffacacb15b12f8293b72afae2c3d0607a463cc", kill_on_drop: false }`
[INFO] [stdout] 0fc81e346381628cf769ebc42dffacacb15b12f8293b72afae2c3d0607a463cc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+23718020b12d7e5a54f82a19910e8356ee719667" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 96d00bb5dae938492493ccca1d49e1b95a3a028d66fb7cbf54218827ab9a175f
[INFO] running `Command { std: "docker" "start" "-a" "96d00bb5dae938492493ccca1d49e1b95a3a028d66fb7cbf54218827ab9a175f", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.82
[INFO] [stderr]    Compiling libc v0.2.154
[INFO] [stderr]     Checking log v0.4.21
[INFO] [stderr]    Compiling crossbeam-utils v0.8.19
[INFO] [stderr]    Compiling libm v0.2.8
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]     Checking memchr v2.7.2
[INFO] [stderr]     Checking smallvec v1.13.2
[INFO] [stderr]     Checking bitflags v2.5.0
[INFO] [stderr]     Checking libloading v0.8.3
[INFO] [stderr]    Compiling rustix v0.38.34
[INFO] [stderr]     Checking linux-raw-sys v0.4.14
[INFO] [stderr]    Compiling thiserror v1.0.60
[INFO] [stderr]    Compiling wayland-sys v0.31.1
[INFO] [stderr]     Checking futures-core v0.3.30
[INFO] [stderr]     Checking parking v2.2.0
[INFO] [stderr]    Compiling cc v1.0.97
[INFO] [stderr]    Compiling hashbrown v0.14.5
[INFO] [stderr]     Checking scoped-tls v1.0.1
[INFO] [stderr]     Checking downcast-rs v1.2.1
[INFO] [stderr]     Checking dlib v0.5.2
[INFO] [stderr]     Checking ttf-parser v0.21.1
[INFO] [stderr]     Checking either v1.11.0
[INFO] [stderr]     Checking futures-io v0.3.30
[INFO] [stderr]     Checking arrayvec v0.7.4
[INFO] [stderr]     Checking concurrent-queue v2.5.0
[INFO] [stderr]     Checking crossbeam-epoch v0.9.18
[INFO] [stderr]    Compiling serde v1.0.202
[INFO] [stderr]     Checking ab_glyph_rasterizer v0.1.8
[INFO] [stderr]    Compiling io-lifetimes v1.0.11
[INFO] [stderr]     Checking fastrand v2.1.0
[INFO] [stderr]     Checking simd-adler32 v0.3.7
[INFO] [stderr]     Checking futures-lite v2.3.0
[INFO] [stderr]    Compiling quote v1.0.36
[INFO] [stderr]    Compiling quick-xml v0.31.0
[INFO] [stderr]     Checking crossbeam-deque v0.8.5
[INFO] [stderr]     Checking event-listener v4.0.3
[INFO] [stderr]     Checking event-listener v5.3.0
[INFO] [stderr]    Compiling aho-corasick v1.1.3
[INFO] [stderr]    Compiling polling v2.8.0
[INFO] [stderr]     Checking event-listener-strategy v0.5.2
[INFO] [stderr]    Compiling syn v2.0.64
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking rayon-core v1.12.1
[INFO] [stderr]     Checking event-listener-strategy v0.4.0
[INFO] [stderr]    Compiling memoffset v0.7.1
[INFO] [stderr]     Checking async-task v4.7.1
[INFO] [stderr]    Compiling khronos_api v3.1.0
[INFO] [stderr]    Compiling rustix v0.37.27
[INFO] [stderr]    Compiling indexmap v2.2.6
[INFO] [stderr]     Checking fastrand v1.9.0
[INFO] [stderr]    Compiling cfg_aliases v0.1.1
[INFO] [stderr]     Checking waker-fn v1.2.0
[INFO] [stderr]    Compiling regex-syntax v0.8.3
[INFO] [stderr]     Checking piper v0.2.2
[INFO] [stderr]     Checking futures-lite v1.13.0
[INFO] [stderr]     Checking async-lock v3.3.0
[INFO] [stderr]     Checking async-channel v2.3.1
[INFO] [stderr]    Compiling wayland-scanner v0.31.1
[INFO] [stderr]     Checking rayon v1.10.0
[INFO] [stderr]     Checking async-lock v2.8.0
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]    Compiling toml_edit v0.19.15
[INFO] [stderr]     Checking num-complex v0.4.6
[INFO] [stderr]     Checking crossbeam-channel v0.5.12
[INFO] [stderr]    Compiling ahash v0.8.11
[INFO] [stderr]    Compiling async-fs v1.6.0
[INFO] [stderr]    Compiling matrixmultiply v0.3.8
[INFO] [stderr]    Compiling async-io v1.13.0
[INFO] [stderr]    Compiling wayland-backend v0.3.3
[INFO] [stderr]    Compiling crc32fast v1.4.0
[INFO] [stderr]     Checking linux-raw-sys v0.3.8
[INFO] [stderr]     Checking miniz_oxide v0.7.2
[INFO] [stderr]     Checking thread-tree v0.3.3
[INFO] [stderr]     Checking num-bigint v0.4.5
[INFO] [stderr]     Checking blocking v1.6.0
[INFO] [stderr]     Checking getrandom v0.2.15
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]     Checking socket2 v0.4.10
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rawpointer v0.2.1
[INFO] [stderr]    Compiling xml-rs v0.8.20
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking futures-task v0.3.30
[INFO] [stderr]     Checking futures-sink v0.3.30
[INFO] [stderr]     Checking sha1 v0.10.6
[INFO] [stderr]     Checking futures-util v0.3.30
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking owned_ttf_parser v0.21.0
[INFO] [stderr]     Checking xdg-home v1.1.0
[INFO] [stderr]     Checking nix v0.26.4
[INFO] [stderr]     Checking ab_glyph v0.2.26
[INFO] [stderr]    Compiling gl_generator v0.14.0
[INFO] [stderr]     Checking num-rational v0.4.2
[INFO] [stderr]     Checking async-executor v1.11.0
[INFO] [stderr]     Checking async-broadcast v0.5.1
[INFO] [stderr]     Checking ordered-stream v0.2.0
[INFO] [stderr]    Compiling x11-dl v2.21.0
[INFO] [stderr]    Compiling smithay-client-toolkit v0.18.1
[INFO] [stderr]     Checking cursor-icon v1.1.0
[INFO] [stderr]     Checking xkeysym v0.2.0
[INFO] [stderr]    Compiling anyhow v1.0.83
[INFO] [stderr]     Checking xcursor v0.3.5
[INFO] [stderr]    Compiling proc-macro-crate v1.3.1
[INFO] [stderr]     Checking flate2 v1.0.30
[INFO] [stderr]     Checking parking_lot_core v0.9.10
[INFO] [stderr]    Compiling regex-automata v0.4.6
[INFO] [stderr]     Checking memmap2 v0.9.4
[INFO] [stderr]    Compiling built v0.7.2
[INFO] [stderr]     Checking strict-num v0.1.1
[INFO] [stderr]     Checking aligned-vec v0.5.0
[INFO] [stderr]     Checking accesskit v0.12.3
[INFO] [stderr]     Checking arrayref v0.3.7
[INFO] [stderr]     Checking nom v7.1.3
[INFO] [stderr]     Checking parking_lot v0.12.2
[INFO] [stderr]     Checking v_frame v0.3.8
[INFO] [stderr]     Checking fdeflate v0.3.4
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling rav1e v0.7.1
[INFO] [stderr]     Checking x11rb-protocol v0.13.1
[INFO] [stderr]    Compiling zvariant_utils v1.0.1
[INFO] [stderr]     Checking as-raw-xcb-connection v1.0.1
[INFO] [stderr]     Checking color_quant v1.1.0
[INFO] [stderr]     Checking png v0.17.13
[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/23718020b12d7e5a54f82a19910e8356ee719667/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="fold"' --cfg 'feature="full"' --cfg 'feature="parsing"' --cfg 'feature="printing"' --cfg 'feature="proc-macro"' --cfg 'feature="quote"' --cfg 'feature="visit"' --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=955827451d0fecc5 -C extra-filename=-3c95510f11008823 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-26cc22cd40e32dc7.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-1bb94451aaaf2f65.rmeta --extern unicode_ident=/opt/rustwide/target/debug/deps/libunicode_ident-f2de522ba645d884.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" "96d00bb5dae938492493ccca1d49e1b95a3a028d66fb7cbf54218827ab9a175f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "96d00bb5dae938492493ccca1d49e1b95a3a028d66fb7cbf54218827ab9a175f", kill_on_drop: false }`
[INFO] [stdout] 96d00bb5dae938492493ccca1d49e1b95a3a028d66fb7cbf54218827ab9a175f