[INFO] fetching crate cifar-ten 0.1.0...
[INFO] checking cifar-ten-0.1.0 against try#b2f80f6008cdafc35b4472bd46afa16cc6b0cd63 for pr-79470
[INFO] extracting crate cifar-ten 0.1.0 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate cifar-ten 0.1.0 on toolchain b2f80f6008cdafc35b4472bd46afa16cc6b0cd63
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "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-13/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1845db9ff62e04210ddf1fb0044a0cb9c972c1f9fe51c4ffdee2c5d9317755e7
[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" "1845db9ff62e04210ddf1fb0044a0cb9c972c1f9fe51c4ffdee2c5d9317755e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1845db9ff62e04210ddf1fb0044a0cb9c972c1f9fe51c4ffdee2c5d9317755e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1845db9ff62e04210ddf1fb0044a0cb9c972c1f9fe51c4ffdee2c5d9317755e7", kill_on_drop: false }`
[INFO] [stdout] 1845db9ff62e04210ddf1fb0044a0cb9c972c1f9fe51c4ffdee2c5d9317755e7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6760ebfee4e9bbc6748fc934da3b3fe5543a090655c09b9fe47908c5d182c230
[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" "6760ebfee4e9bbc6748fc934da3b3fe5543a090655c09b9fe47908c5d182c230", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]     Checking rawpointer v0.2.1
[INFO] [stderr]    Compiling ndarray v0.13.1
[INFO] [stderr]     Checking getrandom v0.1.15
[INFO] [stderr]     Checking matrixmultiply v0.2.4
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-complex v0.2.4
[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 14.44s
[INFO] running `Command { std: "docker" "inspect" "6760ebfee4e9bbc6748fc934da3b3fe5543a090655c09b9fe47908c5d182c230", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6760ebfee4e9bbc6748fc934da3b3fe5543a090655c09b9fe47908c5d182c230", kill_on_drop: false }`
[INFO] [stdout] 6760ebfee4e9bbc6748fc934da3b3fe5543a090655c09b9fe47908c5d182c230