[INFO] cloning repository https://github.com/pml68/neural_network_rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/pml68/neural_network_rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpml68%2Fneural_network_rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpml68%2Fneural_network_rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d7ba78eb3726d8314c75c6686bd47466da4ddf15
[INFO] checking pml68/neural_network_rs against master#ba412a6e70ac84641be7764d088acabd0eb3fa39 for pr-145457
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpml68%2Fneural_network_rs" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/pml68/neural_network_rs
[INFO] finished tweaking git repo https://github.com/pml68/neural_network_rs
[INFO] tweaked toml for git repo https://github.com/pml68/neural_network_rs written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/pml68/neural_network_rs on toolchain ba412a6e70ac84641be7764d088acabd0eb3fa39
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ba412a6e70ac84641be7764d088acabd0eb3fa39" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/pml68/neural_network_rs 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" "+ba412a6e70ac84641be7764d088acabd0eb3fa39" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+ba412a6e70ac84641be7764d088acabd0eb3fa39" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 75da61721163e5d5e8b5ff4eac99fb0e88768cec459e26ed0fe2c69915ebc2cb
[INFO] running `Command { std: "docker" "start" "-a" "75da61721163e5d5e8b5ff4eac99fb0e88768cec459e26ed0fe2c69915ebc2cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "75da61721163e5d5e8b5ff4eac99fb0e88768cec459e26ed0fe2c69915ebc2cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "75da61721163e5d5e8b5ff4eac99fb0e88768cec459e26ed0fe2c69915ebc2cb", kill_on_drop: false }`
[INFO] [stdout] 75da61721163e5d5e8b5ff4eac99fb0e88768cec459e26ed0fe2c69915ebc2cb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+ba412a6e70ac84641be7764d088acabd0eb3fa39" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 89d81209acfd29f7c2a428bcc41a629c05859c4a7c02839d785463939c257a9a
[INFO] running `Command { std: "docker" "start" "-a" "89d81209acfd29f7c2a428bcc41a629c05859c4a7c02839d785463939c257a9a", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.3.0
[INFO] [stderr]    Compiling libm v0.2.8
[INFO] [stderr]    Compiling libc v0.2.155
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.17
[INFO] [stderr]     Checking rawpointer v0.2.1
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling matrixmultiply v0.3.8
[INFO] [stderr]     Checking getrandom v0.2.15
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking num-complex v0.4.6
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking ndarray v0.15.6
[INFO] [stderr]     Checking rand_distr v0.4.3
[INFO] [stderr]     Checking ndarray-rand v0.14.0
[INFO] [stderr]     Checking neural_network_rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `weights`
[INFO] [stdout]   --> src/main.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let weights = array![
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_weights`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `biases`
[INFO] [stdout]   --> src/main.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |     let biases = array![2., 0.5, -1.8, -3.49];
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_biases`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Layer` is never used
[INFO] [stdout]  --> src/layers/mod.rs:5:11
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub trait Layer {}
[INFO] [stdout]   |           ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `from` is never used
[INFO] [stdout]   --> src/layers/dense.rs:20:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl DenseLayer {
[INFO] [stdout]    | --------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 20 |     pub fn from(weights: Array2<f64>, biases: Array1<f64>) -> Self {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `weights`
[INFO] [stdout]   --> src/main.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let weights = array![
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_weights`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `biases`
[INFO] [stdout]   --> src/main.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |     let biases = array![2., 0.5, -1.8, -3.49];
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_biases`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Layer` is never used
[INFO] [stdout]  --> src/layers/mod.rs:5:11
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub trait Layer {}
[INFO] [stdout]   |           ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `from` is never used
[INFO] [stdout]   --> src/layers/dense.rs:20:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl DenseLayer {
[INFO] [stdout]    | --------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 20 |     pub fn from(weights: Array2<f64>, biases: Array1<f64>) -> Self {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.66s
[INFO] running `Command { std: "docker" "inspect" "89d81209acfd29f7c2a428bcc41a629c05859c4a7c02839d785463939c257a9a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "89d81209acfd29f7c2a428bcc41a629c05859c4a7c02839d785463939c257a9a", kill_on_drop: false }`
[INFO] [stdout] 89d81209acfd29f7c2a428bcc41a629c05859c4a7c02839d785463939c257a9a