[INFO] fetching crate cifar-ten 0.1.0...
[INFO] checking cifar-ten-0.1.0 against beta for pr-78714
[INFO] extracting crate cifar-ten 0.1.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate cifar-ten 0.1.0 on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cifar-ten 0.1.0
[INFO] finished tweaking crates.io crate cifar-ten 0.1.0
[INFO] tweaked toml for crates.io crate cifar-ten 0.1.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 5b1b80592a9bd970eff746fa4210ccc4f7ef7e9e0d089ce7091523069e62f47f
[INFO] running `Command { std: "docker" "start" "-a" "5b1b80592a9bd970eff746fa4210ccc4f7ef7e9e0d089ce7091523069e62f47f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5b1b80592a9bd970eff746fa4210ccc4f7ef7e9e0d089ce7091523069e62f47f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b1b80592a9bd970eff746fa4210ccc4f7ef7e9e0d089ce7091523069e62f47f", kill_on_drop: false }`
[INFO] [stdout] 5b1b80592a9bd970eff746fa4210ccc4f7ef7e9e0d089ce7091523069e62f47f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] d99570405cbcacae0fdd3bd2501a8f68cc7cd11050f065ca37292698a600e930
[INFO] running `Command { std: "docker" "start" "-a" "d99570405cbcacae0fdd3bd2501a8f68cc7cd11050f065ca37292698a600e930", kill_on_drop: false }`
[INFO] [stderr]    Compiling ndarray v0.13.1
[INFO] [stderr]     Checking rawpointer v0.2.1
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]     Checking matrixmultiply v0.2.3
[INFO] [stderr]     Checking cifar-ten v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `train_data`
[INFO] [stdout]   --> src/test.rs:10:10
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let (train_data, train_labels, test_data, test_labels) = Cifar10::default()
[INFO] [stdout]    |          ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_train_data`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `train_labels`
[INFO] [stdout]   --> src/test.rs:10:22
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let (train_data, train_labels, test_data, test_labels) = Cifar10::default()
[INFO] [stdout]    |                      ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_train_labels`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `test_data`
[INFO] [stdout]   --> src/test.rs:10:36
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let (train_data, train_labels, test_data, test_labels) = Cifar10::default()
[INFO] [stdout]    |                                    ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_test_data`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `test_labels`
[INFO] [stdout]   --> src/test.rs:10:47
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let (train_data, train_labels, test_data, test_labels) = Cifar10::default()
[INFO] [stdout]    |                                               ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_test_labels`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `train_data`
[INFO] [stdout]   --> src/test.rs:20:10
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let (train_data, train_labels, test_data, test_labels) = Cifar10::default()
[INFO] [stdout]    |          ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_train_data`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `train_labels`
[INFO] [stdout]   --> src/test.rs:20:22
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let (train_data, train_labels, test_data, test_labels) = Cifar10::default()
[INFO] [stdout]    |                      ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_train_labels`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `test_data`
[INFO] [stdout]   --> src/test.rs:20:36
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let (train_data, train_labels, test_data, test_labels) = Cifar10::default()
[INFO] [stdout]    |                                    ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_test_data`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `test_labels`
[INFO] [stdout]   --> src/test.rs:20:47
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let (train_data, train_labels, test_data, test_labels) = Cifar10::default()
[INFO] [stdout]    |                                               ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_test_labels`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.86s
[INFO] running `Command { std: "docker" "inspect" "d99570405cbcacae0fdd3bd2501a8f68cc7cd11050f065ca37292698a600e930", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d99570405cbcacae0fdd3bd2501a8f68cc7cd11050f065ca37292698a600e930", kill_on_drop: false }`
[INFO] [stdout] d99570405cbcacae0fdd3bd2501a8f68cc7cd11050f065ca37292698a600e930