[INFO] fetching crate cifar-ten 0.1.0...
[INFO] checking cifar-ten-0.1.0 against try#8b72f65b805cbe4c261de45030d663f524f27376 for pr-78991
[INFO] extracting crate cifar-ten 0.1.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate cifar-ten 0.1.0 on toolchain 8b72f65b805cbe4c261de45030d663f524f27376
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8b72f65b805cbe4c261de45030d663f524f27376" "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-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8b72f65b805cbe4c261de45030d663f524f27376" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8b72f65b805cbe4c261de45030d663f524f27376" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded wayland-commons v0.25.0
[INFO] [stderr]   Downloaded wayland-scanner v0.25.0
[INFO] [stderr]   Downloaded wayland-client v0.25.0
[INFO] [stderr]   Downloaded wayland-cursor v0.25.0
[INFO] [stderr]   Downloaded xkb v0.2.1
[INFO] [stderr]   Downloaded wayland-protocols v0.25.0
[INFO] [stderr]   Downloaded minifb v0.17.0
[INFO] [stderr]   Downloaded wayland-sys v0.25.0
[INFO] [stderr]   Downloaded xkbcommon-sys v0.7.4
[INFO] [stderr]   Downloaded raw-window-handle v0.3.3
[INFO] [stderr]   Downloaded orbclient v0.3.27
[INFO] [stderr]   Downloaded ndarray v0.13.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+8b72f65b805cbe4c261de45030d663f524f27376" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c160976b6bc866c7f9ffa7af5ebcf65b5a6065e6f9c753527d3f24f6f883a783
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "c160976b6bc866c7f9ffa7af5ebcf65b5a6065e6f9c753527d3f24f6f883a783", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c160976b6bc866c7f9ffa7af5ebcf65b5a6065e6f9c753527d3f24f6f883a783", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c160976b6bc866c7f9ffa7af5ebcf65b5a6065e6f9c753527d3f24f6f883a783", kill_on_drop: false }`
[INFO] [stdout] c160976b6bc866c7f9ffa7af5ebcf65b5a6065e6f9c753527d3f24f6f883a783
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+8b72f65b805cbe4c261de45030d663f524f27376" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 06e310b6f342d3099ec205ea8b7a379d377419048bee6bcbd89f6c487926ecf1
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "06e310b6f342d3099ec205ea8b7a379d377419048bee6bcbd89f6c487926ecf1", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.80
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling ndarray v0.13.1
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[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 11.56s
[INFO] running `Command { std: "docker" "inspect" "06e310b6f342d3099ec205ea8b7a379d377419048bee6bcbd89f6c487926ecf1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "06e310b6f342d3099ec205ea8b7a379d377419048bee6bcbd89f6c487926ecf1", kill_on_drop: false }`
[INFO] [stdout] 06e310b6f342d3099ec205ea8b7a379d377419048bee6bcbd89f6c487926ecf1