[INFO] cloning repository https://github.com/ptsouchlos/nn-and-dl
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ptsouchlos/nn-and-dl" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fptsouchlos%2Fnn-and-dl", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fptsouchlos%2Fnn-and-dl'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b9f7f3bd9e143a82546ec88bdec06e411f77ebb6
[INFO] checking ptsouchlos/nn-and-dl against try#b98202ad067d72e45cec8be3d5c15d86ef0fd086 for pr-155193
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fptsouchlos%2Fnn-and-dl" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/ptsouchlos/nn-and-dl
[INFO] finished tweaking git repo https://github.com/ptsouchlos/nn-and-dl
[INFO] tweaked toml for git repo https://github.com/ptsouchlos/nn-and-dl written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ptsouchlos/nn-and-dl on toolchain b98202ad067d72e45cec8be3d5c15d86ef0fd086
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b98202ad067d72e45cec8be3d5c15d86ef0fd086" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/ptsouchlos/nn-and-dl 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" "+b98202ad067d72e45cec8be3d5c15d86ef0fd086" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+b98202ad067d72e45cec8be3d5c15d86ef0fd086" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a8d243d911bdf8a320f1d711960e21bced77dadd28f6b6ced7ae068bfe0337a4
[INFO] running `Command { std: "docker" "start" "-a" "a8d243d911bdf8a320f1d711960e21bced77dadd28f6b6ced7ae068bfe0337a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a8d243d911bdf8a320f1d711960e21bced77dadd28f6b6ced7ae068bfe0337a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a8d243d911bdf8a320f1d711960e21bced77dadd28f6b6ced7ae068bfe0337a4", kill_on_drop: false }`
[INFO] [stdout] a8d243d911bdf8a320f1d711960e21bced77dadd28f6b6ced7ae068bfe0337a4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+b98202ad067d72e45cec8be3d5c15d86ef0fd086" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a493cb3ccd3c68f6fb2ad9782d62d1bf7ebdebc4748a3429b2f643fcbc85afd1
[INFO] running `Command { std: "docker" "start" "-a" "a493cb3ccd3c68f6fb2ad9782d62d1bf7ebdebc4748a3429b2f643fcbc85afd1", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling libc v0.2.180
[INFO] [stderr]    Compiling zerocopy v0.8.33
[INFO] [stderr]    Compiling proc-macro2 v1.0.105
[INFO] [stderr]    Compiling quote v1.0.43
[INFO] [stderr]     Checking bytemuck v1.24.0
[INFO] [stderr]    Compiling matrixmultiply v0.3.10
[INFO] [stderr]     Checking rawpointer v0.2.1
[INFO] [stderr]    Compiling anyhow v1.0.100
[INFO] [stderr]     Checking safe_arch v0.7.4
[INFO] [stderr]     Checking wide v0.7.33
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking approx v0.5.1
[INFO] [stderr]     Checking num-complex v0.4.6
[INFO] [stderr]    Compiling syn v2.0.114
[INFO] [stderr]     Checking num-rational v0.4.2
[INFO] [stderr]     Checking getrandom v0.3.4
[INFO] [stderr]     Checking rand_core v0.9.5
[INFO] [stderr]     Checking ppv-lite86 v0.2.21
[INFO] [stderr]     Checking simba v0.9.1
[INFO] [stderr]     Checking rand_chacha v0.9.0
[INFO] [stderr]     Checking rand v0.9.2
[INFO] [stderr]     Checking rand_distr v0.5.1
[INFO] [stderr]    Compiling nalgebra-macros v0.3.0
[INFO] [stderr]     Checking nalgebra v0.34.1
[INFO] [stderr]     Checking nn-and-dl v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `BufReader`
[INFO] [stdout]  --> src/mnist_loader.rs:3:10
[INFO] [stdout]   |
[INFO] [stdout] 3 |     io::{BufReader, Read},
[INFO] [stdout]   |          ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::types::DataVector`
[INFO] [stdout]   --> src/mnist_loader.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use crate::types::DataVector;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BufReader`
[INFO] [stdout]  --> src/mnist_loader.rs:3:10
[INFO] [stdout]   |
[INFO] [stdout] 3 |     io::{BufReader, Read},
[INFO] [stdout]   |          ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::types::DataVector`
[INFO] [stdout]   --> src/mnist_loader.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use crate::types::DataVector;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `image_file_path`
[INFO] [stdout]   --> src/mnist_loader.rs:41:15
[INFO] [stdout]    |
[INFO] [stdout] 41 |     fn images(image_file_path: PathBuf, expected_length: usize) -> Result<Vec<u8>> {
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_image_file_path`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `expected_length`
[INFO] [stdout]   --> src/mnist_loader.rs:41:41
[INFO] [stdout]    |
[INFO] [stdout] 41 |     fn images(image_file_path: PathBuf, expected_length: usize) -> Result<Vec<u8>> {
[INFO] [stdout]    |                                         ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_expected_length`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `training_labels` is never read
[INFO] [stdout]   --> src/mnist_loader.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub struct MnistData {
[INFO] [stdout]    |            --------- field in this struct
[INFO] [stdout] 13 |     training_labels: Vec<u8>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `TESTING_DATA_LENGTH` is never used
[INFO] [stdout]   --> src/mnist_loader.rs:25:7
[INFO] [stdout]    |
[INFO] [stdout] 25 | const TESTING_DATA_LENGTH: usize = 10_000;
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `image` and `label` are never read
[INFO] [stdout]  --> src/training_data.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct Sample {
[INFO] [stdout]   |            ------ fields in this struct
[INFO] [stdout] 6 |     image: DataVector,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 7 |     label: Scalar,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `image_file_path`
[INFO] [stdout]   --> src/mnist_loader.rs:41:15
[INFO] [stdout]    |
[INFO] [stdout] 41 |     fn images(image_file_path: PathBuf, expected_length: usize) -> Result<Vec<u8>> {
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_image_file_path`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `expected_length`
[INFO] [stdout]   --> src/mnist_loader.rs:41:41
[INFO] [stdout]    |
[INFO] [stdout] 41 |     fn images(image_file_path: PathBuf, expected_length: usize) -> Result<Vec<u8>> {
[INFO] [stdout]    |                                         ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_expected_length`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `training_labels` is never read
[INFO] [stdout]   --> src/mnist_loader.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub struct MnistData {
[INFO] [stdout]    |            --------- field in this struct
[INFO] [stdout] 13 |     training_labels: Vec<u8>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `TESTING_DATA_LENGTH` is never used
[INFO] [stdout]   --> src/mnist_loader.rs:25:7
[INFO] [stdout]    |
[INFO] [stdout] 25 | const TESTING_DATA_LENGTH: usize = 10_000;
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `image` and `label` are never read
[INFO] [stdout]  --> src/training_data.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct Sample {
[INFO] [stdout]   |            ------ fields in this struct
[INFO] [stdout] 6 |     image: DataVector,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 7 |     label: Scalar,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.38s
[INFO] running `Command { std: "docker" "inspect" "a493cb3ccd3c68f6fb2ad9782d62d1bf7ebdebc4748a3429b2f643fcbc85afd1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a493cb3ccd3c68f6fb2ad9782d62d1bf7ebdebc4748a3429b2f643fcbc85afd1", kill_on_drop: false }`
[INFO] [stdout] a493cb3ccd3c68f6fb2ad9782d62d1bf7ebdebc4748a3429b2f643fcbc85afd1