[INFO] cloning repository https://github.com/kitagry/rust-deep-learning
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kitagry/rust-deep-learning" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkitagry%2Frust-deep-learning", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkitagry%2Frust-deep-learning'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7e37fb00e07d650cd8fdfc6ed8771d2a0f6527fd
[INFO] checking kitagry/rust-deep-learning against master#2e6fc425411280c658d852813de01c5157255088 for pr-128013
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkitagry%2Frust-deep-learning" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kitagry/rust-deep-learning on toolchain 2e6fc425411280c658d852813de01c5157255088
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2e6fc425411280c658d852813de01c5157255088" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/kitagry/rust-deep-learning
[INFO] finished tweaking git repo https://github.com/kitagry/rust-deep-learning
[INFO] tweaked toml for git repo https://github.com/kitagry/rust-deep-learning written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/kitagry/rust-deep-learning 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" "+2e6fc425411280c658d852813de01c5157255088" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded mnist v0.4.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+2e6fc425411280c658d852813de01c5157255088" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] da7d2066869dc7c5933ea8647bf6e87fe95e15e29a15df982d957e9b80772c0a
[INFO] running `Command { std: "docker" "start" "-a" "da7d2066869dc7c5933ea8647bf6e87fe95e15e29a15df982d957e9b80772c0a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "da7d2066869dc7c5933ea8647bf6e87fe95e15e29a15df982d957e9b80772c0a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "da7d2066869dc7c5933ea8647bf6e87fe95e15e29a15df982d957e9b80772c0a", kill_on_drop: false }`
[INFO] [stdout] da7d2066869dc7c5933ea8647bf6e87fe95e15e29a15df982d957e9b80772c0a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+2e6fc425411280c658d852813de01c5157255088" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ce9973d26de256e4c07df27470f0d56d0ab7c87c155a00c8d72a8a4cbc2ebd8a
[INFO] running `Command { std: "docker" "start" "-a" "ce9973d26de256e4c07df27470f0d56d0ab7c87c155a00c8d72a8a4cbc2ebd8a", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling getrandom v0.1.13
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling rayon-core v1.6.0
[INFO] [stderr]    Compiling num-derive v0.2.5
[INFO] [stderr]    Compiling num-rational v0.2.2
[INFO] [stderr]    Compiling num-iter v0.1.39
[INFO] [stderr]    Compiling num-complex v0.2.3
[INFO] [stderr]     Checking lzw v0.10.0
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking color_quant v1.0.1
[INFO] [stderr]    Compiling ndarray v0.13.0
[INFO] [stderr]     Checking rayon v1.2.0
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking gif v0.10.3
[INFO] [stderr]     Checking png v0.15.0
[INFO] [stderr]     Checking itertools v0.8.0
[INFO] [stderr]     Checking scoped_threadpool v0.1.9
[INFO] [stderr]     Checking mnist v0.4.0
[INFO] [stderr]     Checking rand v0.7.2
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]     Checking jpeg-decoder v0.1.16
[INFO] [stderr]     Checking tiff v0.3.1
[INFO] [stderr]     Checking image v0.22.3
[INFO] [stderr]     Checking rust-deep-learning v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `trn_lbl`
[INFO] [stdout]   --> src/main.rs:67:7
[INFO] [stdout]    |
[INFO] [stdout] 67 |   let trn_lbl = rcarr1(&trn_lbl).reshape((trn_size, 10));
[INFO] [stdout]    |       ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_trn_lbl`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `trn_lbl`
[INFO] [stdout]   --> src/main.rs:67:7
[INFO] [stdout]    |
[INFO] [stdout] 67 |   let trn_lbl = rcarr1(&trn_lbl).reshape((trn_size, 10));
[INFO] [stdout]    |       ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_trn_lbl`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tst_img`
[INFO] [stdout]   --> src/main.rs:68:7
[INFO] [stdout]    |
[INFO] [stdout] 68 |   let tst_img = rcarr1(&tst_img).reshape((tst_size, rows * cols));
[INFO] [stdout]    |       ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_tst_img`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tst_lbl`
[INFO] [stdout]   --> src/main.rs:69:7
[INFO] [stdout]    |
[INFO] [stdout] 69 |   let tst_lbl = rcarr1(&tst_lbl).reshape((tst_size, 10));
[INFO] [stdout]    |       ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_tst_lbl`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tst_img`
[INFO] [stdout]   --> src/main.rs:68:7
[INFO] [stdout]    |
[INFO] [stdout] 68 |   let tst_img = rcarr1(&tst_img).reshape((tst_size, rows * cols));
[INFO] [stdout]    |       ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_tst_img`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tst_lbl`
[INFO] [stdout]   --> src/main.rs:69:7
[INFO] [stdout]    |
[INFO] [stdout] 69 |   let tst_lbl = rcarr1(&tst_lbl).reshape((tst_size, 10));
[INFO] [stdout]    |       ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_tst_lbl`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.62s
[INFO] running `Command { std: "docker" "inspect" "ce9973d26de256e4c07df27470f0d56d0ab7c87c155a00c8d72a8a4cbc2ebd8a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ce9973d26de256e4c07df27470f0d56d0ab7c87c155a00c8d72a8a4cbc2ebd8a", kill_on_drop: false }`
[INFO] [stdout] ce9973d26de256e4c07df27470f0d56d0ab7c87c155a00c8d72a8a4cbc2ebd8a