[INFO] cloning repository https://github.com/carlosvneves/micrograd_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/carlosvneves/micrograd_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcarlosvneves%2Fmicrograd_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcarlosvneves%2Fmicrograd_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5d7d0bce4525b587d207b87939e153dd5da99493
[INFO] testing carlosvneves/micrograd_rust against master#414482f6a0d4e7290f614300581a0b55442552a3 for pr-140985
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcarlosvneves%2Fmicrograd_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/carlosvneves/micrograd_rust on toolchain 414482f6a0d4e7290f614300581a0b55442552a3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+414482f6a0d4e7290f614300581a0b55442552a3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/carlosvneves/micrograd_rust
[INFO] finished tweaking git repo https://github.com/carlosvneves/micrograd_rust
[INFO] tweaked toml for git repo https://github.com/carlosvneves/micrograd_rust written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/carlosvneves/micrograd_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" "+414482f6a0d4e7290f614300581a0b55442552a3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+414482f6a0d4e7290f614300581a0b55442552a3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e3d4ae9e660afc7a4e74777b1742735b3cd704093ee0df7c08d24289fdaa3492
[INFO] running `Command { std: "docker" "start" "-a" "e3d4ae9e660afc7a4e74777b1742735b3cd704093ee0df7c08d24289fdaa3492", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e3d4ae9e660afc7a4e74777b1742735b3cd704093ee0df7c08d24289fdaa3492", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e3d4ae9e660afc7a4e74777b1742735b3cd704093ee0df7c08d24289fdaa3492", kill_on_drop: false }`
[INFO] [stdout] e3d4ae9e660afc7a4e74777b1742735b3cd704093ee0df7c08d24289fdaa3492
[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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+414482f6a0d4e7290f614300581a0b55442552a3" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a2920320dc2d2cc005be8d82de58ffb7a03da245a06333ee0d7c62282a38e36c
[INFO] running `Command { std: "docker" "start" "-a" "a2920320dc2d2cc005be8d82de58ffb7a03da245a06333ee0d7c62282a38e36c", kill_on_drop: false }`
[INFO] [stderr]    Compiling micrograd_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `NeuralNetwork` is never constructed
[INFO] [stdout]  --> src/engine/neural_network.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct NeuralNetwork {
[INFO] [stdout]   |            ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.46s
[INFO] running `Command { std: "docker" "inspect" "a2920320dc2d2cc005be8d82de58ffb7a03da245a06333ee0d7c62282a38e36c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a2920320dc2d2cc005be8d82de58ffb7a03da245a06333ee0d7c62282a38e36c", kill_on_drop: false }`
[INFO] [stdout] a2920320dc2d2cc005be8d82de58ffb7a03da245a06333ee0d7c62282a38e36c
[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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+414482f6a0d4e7290f614300581a0b55442552a3" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2391af0f3bfd6858fb33c949497baba23251a9fcf5f4bcd03ba9e2444a991a06
[INFO] running `Command { std: "docker" "start" "-a" "2391af0f3bfd6858fb33c949497baba23251a9fcf5f4bcd03ba9e2444a991a06", kill_on_drop: false }`
[INFO] [stderr]    Compiling micrograd_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `NeuralNetwork` is never constructed
[INFO] [stdout]  --> src/engine/neural_network.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct NeuralNetwork {
[INFO] [stdout]   |            ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.32s
[INFO] running `Command { std: "docker" "inspect" "2391af0f3bfd6858fb33c949497baba23251a9fcf5f4bcd03ba9e2444a991a06", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2391af0f3bfd6858fb33c949497baba23251a9fcf5f4bcd03ba9e2444a991a06", kill_on_drop: false }`
[INFO] [stdout] 2391af0f3bfd6858fb33c949497baba23251a9fcf5f4bcd03ba9e2444a991a06
[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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+414482f6a0d4e7290f614300581a0b55442552a3" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] f3fabd0f989b008ca012a1542c784e9b4fd9f22b9b788497bc206ec5f6a3ee9f
[INFO] running `Command { std: "docker" "start" "-a" "f3fabd0f989b008ca012a1542c784e9b4fd9f22b9b788497bc206ec5f6a3ee9f", kill_on_drop: false }`
[INFO] [stderr] warning: struct `NeuralNetwork` is never constructed
[INFO] [stderr]  --> src/engine/neural_network.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub struct NeuralNetwork {
[INFO] [stderr]   |            ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `micrograd_rust` (bin "micrograd_rust" test) generated 1 warning
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/micrograd_rust-c81eb98726d5828d)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "f3fabd0f989b008ca012a1542c784e9b4fd9f22b9b788497bc206ec5f6a3ee9f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f3fabd0f989b008ca012a1542c784e9b4fd9f22b9b788497bc206ec5f6a3ee9f", kill_on_drop: false }`
[INFO] [stdout] f3fabd0f989b008ca012a1542c784e9b4fd9f22b9b788497bc206ec5f6a3ee9f