[INFO] cloning repository https://github.com/ryanbarouki/rust-neural-network
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ryanbarouki/rust-neural-network" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fryanbarouki%2Frust-neural-network", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fryanbarouki%2Frust-neural-network'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] de76fa16a272404bbe45bdd543ded5981f10cb8b
[INFO] building ryanbarouki/rust-neural-network against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fryanbarouki%2Frust-neural-network" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ryanbarouki/rust-neural-network on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ryanbarouki/rust-neural-network
[INFO] finished tweaking git repo https://github.com/ryanbarouki/rust-neural-network
[INFO] tweaked toml for git repo https://github.com/ryanbarouki/rust-neural-network written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/ryanbarouki/rust-neural-network 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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 51d42bd588ac09c6340a1e11c66fc489b89da104eec8057ffa215b0a7ea4ec1b
[INFO] running `Command { std: "docker" "start" "-a" "51d42bd588ac09c6340a1e11c66fc489b89da104eec8057ffa215b0a7ea4ec1b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "51d42bd588ac09c6340a1e11c66fc489b89da104eec8057ffa215b0a7ea4ec1b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "51d42bd588ac09c6340a1e11c66fc489b89da104eec8057ffa215b0a7ea4ec1b", kill_on_drop: false }`
[INFO] [stdout] 51d42bd588ac09c6340a1e11c66fc489b89da104eec8057ffa215b0a7ea4ec1b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 712c186ccf54253bd32317df9081532110a052642ddfb94913f80273591049f8
[INFO] running `Command { std: "docker" "start" "-a" "712c186ccf54253bd32317df9081532110a052642ddfb94913f80273591049f8", kill_on_drop: false }`
[INFO] [stderr]    Compiling libm v0.2.6
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling rawpointer v0.2.1
[INFO] [stderr]    Compiling matrixmultiply v0.3.2
[INFO] [stderr]    Compiling getrandom v0.2.8
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling num-complex v0.4.3
[INFO] [stderr]    Compiling ndarray v0.15.6
[INFO] [stderr]    Compiling rand_distr v0.4.3
[INFO] [stderr]    Compiling ndarray-rand v0.14.0
[INFO] [stderr]    Compiling rust-neural-network v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `nabla_w`
[INFO] [stdout]   --> src/main.rs:14:19
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let (nabla_b, nabla_w) = nn.backprop(&input, &output);
[INFO] [stdout]    |                   ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_nabla_w`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TrainingData` is never constructed
[INFO] [stdout]   --> src/network.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | struct TrainingData {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `sizes` is never read
[INFO] [stdout]   --> src/network.rs:34:5
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub struct Network {
[INFO] [stdout]    |            ------- field in this struct
[INFO] [stdout] 33 |     num_layers: usize,
[INFO] [stdout] 34 |     sizes: Vec<usize>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Network` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `update_mini_batch` is never used
[INFO] [stdout]   --> src/network.rs:58:8
[INFO] [stdout]    |
[INFO] [stdout] 39 | impl Network {
[INFO] [stdout]    | ------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 58 |     fn update_mini_batch(&mut self, 
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.48s
[INFO] running `Command { std: "docker" "inspect" "712c186ccf54253bd32317df9081532110a052642ddfb94913f80273591049f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "712c186ccf54253bd32317df9081532110a052642ddfb94913f80273591049f8", kill_on_drop: false }`
[INFO] [stdout] 712c186ccf54253bd32317df9081532110a052642ddfb94913f80273591049f8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e53f2e0d71d5b2d0fe330d11a6fb7e2ac9e92466ca799a484d96e151492a630c
[INFO] running `Command { std: "docker" "start" "-a" "e53f2e0d71d5b2d0fe330d11a6fb7e2ac9e92466ca799a484d96e151492a630c", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-neural-network v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `nabla_w`
[INFO] [stdout]   --> src/main.rs:14:19
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let (nabla_b, nabla_w) = nn.backprop(&input, &output);
[INFO] [stdout]    |                   ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_nabla_w`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TrainingData` is never constructed
[INFO] [stdout]   --> src/network.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | struct TrainingData {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `sizes` is never read
[INFO] [stdout]   --> src/network.rs:34:5
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub struct Network {
[INFO] [stdout]    |            ------- field in this struct
[INFO] [stdout] 33 |     num_layers: usize,
[INFO] [stdout] 34 |     sizes: Vec<usize>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Network` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `update_mini_batch` is never used
[INFO] [stdout]   --> src/network.rs:58:8
[INFO] [stdout]    |
[INFO] [stdout] 39 | impl Network {
[INFO] [stdout]    | ------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 58 |     fn update_mini_batch(&mut self, 
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.16s
[INFO] running `Command { std: "docker" "inspect" "e53f2e0d71d5b2d0fe330d11a6fb7e2ac9e92466ca799a484d96e151492a630c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e53f2e0d71d5b2d0fe330d11a6fb7e2ac9e92466ca799a484d96e151492a630c", kill_on_drop: false }`
[INFO] [stdout] e53f2e0d71d5b2d0fe330d11a6fb7e2ac9e92466ca799a484d96e151492a630c