[INFO] cloning repository https://github.com/Kanerix/mnist-ai-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Kanerix/mnist-ai-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKanerix%2Fmnist-ai-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKanerix%2Fmnist-ai-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b01ba00c3449dc62b2d838cff664cb06927de640
[INFO] checking Kanerix/mnist-ai-rust against master#6fc0273b5a57eb78cc00841181113fda3e509478 for pr-112842-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKanerix%2Fmnist-ai-rust" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Kanerix/mnist-ai-rust on toolchain 6fc0273b5a57eb78cc00841181113fda3e509478
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6fc0273b5a57eb78cc00841181113fda3e509478" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-0-tc1/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/Kanerix/mnist-ai-rust
[INFO] finished tweaking git repo https://github.com/Kanerix/mnist-ai-rust
[INFO] tweaked toml for git repo https://github.com/Kanerix/mnist-ai-rust written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Kanerix/mnist-ai-rust 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" "+6fc0273b5a57eb78cc00841181113fda3e509478" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:a420fdec406141845121210faa381f8029b0be6d4170deff7c4445a424f67918" "/opt/rustwide/cargo-home/bin/cargo" "+6fc0273b5a57eb78cc00841181113fda3e509478" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f72bfd8a6f47d21c0e136f9aa30486dcd34e2fd735e4a4bf75e71e9e098c6f3b
[INFO] running `Command { std: "docker" "start" "-a" "f72bfd8a6f47d21c0e136f9aa30486dcd34e2fd735e4a4bf75e71e9e098c6f3b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f72bfd8a6f47d21c0e136f9aa30486dcd34e2fd735e4a4bf75e71e9e098c6f3b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f72bfd8a6f47d21c0e136f9aa30486dcd34e2fd735e4a4bf75e71e9e098c6f3b", kill_on_drop: false }`
[INFO] [stdout] f72bfd8a6f47d21c0e136f9aa30486dcd34e2fd735e4a4bf75e71e9e098c6f3b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:a420fdec406141845121210faa381f8029b0be6d4170deff7c4445a424f67918" "/opt/rustwide/cargo-home/bin/cargo" "+6fc0273b5a57eb78cc00841181113fda3e509478" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0af358ad8afd78852df8ccf8dc2753a15a487de713d6ca589d47b0e412075186
[INFO] running `Command { std: "docker" "start" "-a" "0af358ad8afd78852df8ccf8dc2753a15a487de713d6ca589d47b0e412075186", kill_on_drop: false }`
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[INFO] [stdout] warning: unused variable: `pixels`
[INFO] [stdout]   --> src/app/mod.rs:33:6
[INFO] [stdout]    |
[INFO] [stdout] 33 |     let pixels: Array2<u8> = Array2::zeros((28, 28)); 
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_pixels`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `model`
[INFO] [stdout]   --> src/app/mod.rs:29:20
[INFO] [stdout]    |
[INFO] [stdout] 29 | fn view(app: &App, model: &Model, frame: Frame) {
[INFO] [stdout]    |                    ^^^^^ help: if this is intentional, prefix it with an underscore: `_model`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pixels`
[INFO] [stdout]   --> src/app/mod.rs:33:6
[INFO] [stdout]    |
[INFO] [stdout] 33 |     let pixels: Array2<u8> = Array2::zeros((28, 28)); 
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_pixels`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `model`
[INFO] [stdout]   --> src/app/mod.rs:29:20
[INFO] [stdout]    |
[INFO] [stdout] 29 | fn view(app: &App, model: &Model, frame: Frame) {
[INFO] [stdout]    |                    ^^^^^ help: if this is intentional, prefix it with an underscore: `_model`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `network` is never read
[INFO] [stdout]  --> src/app/mod.rs:7:2
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct Model {
[INFO] [stdout]   |        ----- field in this struct
[INFO] [stdout] 7 |     network: Network    
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `network` is never read
[INFO] [stdout]  --> src/app/mod.rs:7:2
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct Model {
[INFO] [stdout]   |        ----- field in this struct
[INFO] [stdout] 7 |     network: Network    
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[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 [unoptimized + debuginfo] target(s) in 1m 17s
[INFO] running `Command { std: "docker" "inspect" "0af358ad8afd78852df8ccf8dc2753a15a487de713d6ca589d47b0e412075186", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0af358ad8afd78852df8ccf8dc2753a15a487de713d6ca589d47b0e412075186", kill_on_drop: false }`
[INFO] [stdout] 0af358ad8afd78852df8ccf8dc2753a15a487de713d6ca589d47b0e412075186