[INFO] cloning repository https://github.com/john-h-k/digit-nn-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/john-h-k/digit-nn-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjohn-h-k%2Fdigit-nn-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjohn-h-k%2Fdigit-nn-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9b4d2dc1f6970ecbd5b4075e9fc8dd2316c37c77
[INFO] checking john-h-k/digit-nn-rs against try#ae258e1fcbee4a062f5f3d869f06004d7cea088e for pr-135272
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjohn-h-k%2Fdigit-nn-rs" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/john-h-k/digit-nn-rs on toolchain ae258e1fcbee4a062f5f3d869f06004d7cea088e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ae258e1fcbee4a062f5f3d869f06004d7cea088e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/john-h-k/digit-nn-rs
[INFO] finished tweaking git repo https://github.com/john-h-k/digit-nn-rs
[INFO] tweaked toml for git repo https://github.com/john-h-k/digit-nn-rs written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/john-h-k/digit-nn-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" "+ae258e1fcbee4a062f5f3d869f06004d7cea088e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded npy v0.4.0
[INFO] [stderr]   Downloaded ndarray-npy v0.9.1
[INFO] [stderr]   Downloaded zip v2.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:819108c5571ea2e421544af4d832f968d213c87fbe3707a016657f43d2f853bc" "/opt/rustwide/cargo-home/bin/cargo" "+ae258e1fcbee4a062f5f3d869f06004d7cea088e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a3e2ade550dedeb9d4823444af3fc13b9376f30556be2c5cc1c0a91a58665ede
[INFO] running `Command { std: "docker" "start" "-a" "a3e2ade550dedeb9d4823444af3fc13b9376f30556be2c5cc1c0a91a58665ede", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a3e2ade550dedeb9d4823444af3fc13b9376f30556be2c5cc1c0a91a58665ede", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a3e2ade550dedeb9d4823444af3fc13b9376f30556be2c5cc1c0a91a58665ede", kill_on_drop: false }`
[INFO] [stdout] a3e2ade550dedeb9d4823444af3fc13b9376f30556be2c5cc1c0a91a58665ede
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:819108c5571ea2e421544af4d832f968d213c87fbe3707a016657f43d2f853bc" "/opt/rustwide/cargo-home/bin/cargo" "+ae258e1fcbee4a062f5f3d869f06004d7cea088e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a4e256b61938a878c2fe8985d18229b46bcfc8c2f2b4c243f440501699d485bf
[INFO] running `Command { std: "docker" "start" "-a" "a4e256b61938a878c2fe8985d18229b46bcfc8c2f2b4c243f440501699d485bf", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.92
[INFO] [stderr]    Compiling unicode-ident v1.0.14
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling libm v0.2.8
[INFO] [stderr]    Compiling thiserror v1.0.69
[INFO] [stderr]    Compiling crossbeam-utils v0.8.19
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling crc32fast v1.4.0
[INFO] [stderr]     Checking simd-adler32 v0.3.7
[INFO] [stderr]     Checking adler2 v2.0.0
[INFO] [stderr]    Compiling rayon-core v1.12.1
[INFO] [stderr]    Compiling ucd-trie v0.1.7
[INFO] [stderr]    Compiling memchr v2.7.4
[INFO] [stderr]    Compiling once_cell v1.20.2
[INFO] [stderr]     Checking scopeguard v1.2.0
[INFO] [stderr]     Checking miniz_oxide v0.8.0
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]     Checking either v1.10.0
[INFO] [stderr]     Checking lockfree-object-pool v0.1.6
[INFO] [stderr]     Checking miniz_oxide v0.7.2
[INFO] [stderr]     Checking equivalent v1.0.1
[INFO] [stderr]    Compiling zip v2.1.1
[INFO] [stderr]     Checking hashbrown v0.15.2
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]    Compiling lock_api v0.4.11
[INFO] [stderr]    Compiling matrixmultiply v0.3.8
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.17
[INFO] [stderr]     Checking weezl v0.1.8
[INFO] [stderr]     Checking bumpalo v3.16.0
[INFO] [stderr]     Checking rawpointer v0.2.1
[INFO] [stderr]    Compiling serde v1.0.215
[INFO] [stderr]     Checking log v0.4.22
[INFO] [stderr]     Checking zune-inflate v0.2.54
[INFO] [stderr]     Checking fdeflate v0.3.4
[INFO] [stderr]     Checking half v2.3.1
[INFO] [stderr]     Checking bit_field v0.10.2
[INFO] [stderr]     Checking flate2 v1.0.35
[INFO] [stderr]     Checking lebe v0.5.2
[INFO] [stderr]     Checking crossbeam-epoch v0.9.18
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking spin v0.9.8
[INFO] [stderr]    Compiling serde_json v1.0.133
[INFO] [stderr]     Checking zopfli v0.8.1
[INFO] [stderr]     Checking smallvec v1.13.1
[INFO] [stderr]     Checking flume v0.11.0
[INFO] [stderr]     Checking bytemuck v1.14.3
[INFO] [stderr]     Checking color_quant v1.1.0
[INFO] [stderr]     Checking ryu v1.0.18
[INFO] [stderr]     Checking itoa v1.0.14
[INFO] [stderr]     Checking gif v0.12.0
[INFO] [stderr]     Checking getrandom v0.2.12
[INFO] [stderr]     Checking memchr v1.0.2
[INFO] [stderr]     Checking qoi v0.4.1
[INFO] [stderr]     Checking nom v3.2.1
[INFO] [stderr]     Checking crossbeam-deque v0.8.5
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]     Checking png v0.17.13
[INFO] [stderr]     Checking indexmap v2.7.0
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]    Compiling syn v2.0.90
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking num-complex v0.4.5
[INFO] [stderr]     Checking rayon v1.8.1
[INFO] [stderr]     Checking exr v1.72.0
[INFO] [stderr]     Checking npy v0.4.0
[INFO] [stderr]     Checking num-bigint v0.4.6
[INFO] [stderr]     Checking rand_distr v0.4.3
[INFO] [stderr]     Checking ndarray v0.16.1
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]    Compiling displaydoc v0.2.5
[INFO] [stderr]    Compiling serde_derive v1.0.215
[INFO] [stderr]    Compiling pest v2.7.14
[INFO] [stderr]     Checking jpeg-decoder v0.3.1
[INFO] [stderr]     Checking tiff v0.9.1
[INFO] [stderr]    Compiling pest_meta v2.7.14
[INFO] [stderr]     Checking image v0.24.8
[INFO] [stderr]    Compiling pest_generator v2.7.14
[INFO] [stderr]    Compiling pest_derive v2.7.14
[INFO] [stderr]     Checking py_literal v0.4.0
[INFO] [stderr]     Checking ndarray-npy v0.9.1
[INFO] [stderr]     Checking digit-nn v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Ix1` and `Ix2`
[INFO] [stdout]  --> src/mnist.rs:1:37
[INFO] [stdout]   |
[INFO] [stdout] 1 | use ndarray::{Array1, Array2, Axis, Ix1, Ix2};
[INFO] [stdout]   |                                     ^^^  ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `io::Read`
[INFO] [stdout]  --> src/mnist.rs:3:21
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::{fs::File, io::Read}; // needed for the trait
[INFO] [stdout]   |                     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/network.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 |     iter::{self, zip},
[INFO] [stdout]   |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `RngCore`
[INFO] [stdout]  --> src/network.rs:7:30
[INFO] [stdout]   |
[INFO] [stdout] 7 | use rand::{seq::SliceRandom, RngCore};
[INFO] [stdout]   |                              ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Array1`, `ArrayD`, and `Axis`
[INFO] [stdout]   --> src/network.rs:10:28
[INFO] [stdout]    |
[INFO] [stdout] 10 | use ndarray::{linalg::Dot, Array1, Array2, ArrayD, Axis};
[INFO] [stdout]    |                            ^^^^^^          ^^^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Ix1` and `Ix2`
[INFO] [stdout]  --> src/mnist.rs:1:37
[INFO] [stdout]   |
[INFO] [stdout] 1 | use ndarray::{Array1, Array2, Axis, Ix1, Ix2};
[INFO] [stdout]   |                                     ^^^  ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `io::Read`
[INFO] [stdout]  --> src/mnist.rs:3:21
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::{fs::File, io::Read}; // needed for the trait
[INFO] [stdout]   |                     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/network.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 |     iter::{self, zip},
[INFO] [stdout]   |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `RngCore`
[INFO] [stdout]  --> src/network.rs:7:30
[INFO] [stdout]   |
[INFO] [stdout] 7 | use rand::{seq::SliceRandom, RngCore};
[INFO] [stdout]   |                              ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Array1`, `ArrayD`, and `Axis`
[INFO] [stdout]   --> src/network.rs:10:28
[INFO] [stdout]    |
[INFO] [stdout] 10 | use ndarray::{linalg::Dot, Array1, Array2, ArrayD, Axis};
[INFO] [stdout]    |                            ^^^^^^          ^^^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `linalg::Dot`
[INFO] [stdout]   --> src/network.rs:10:15
[INFO] [stdout]    |
[INFO] [stdout] 10 | use ndarray::{linalg::Dot, Array1, Array2, ArrayD, Axis};
[INFO] [stdout]    |               ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `GenericImageView`
[INFO] [stdout]  --> src/main.rs:1:49
[INFO] [stdout]   |
[INFO] [stdout] 1 | use image::{imageops::FilterType, DynamicImage, GenericImageView, ImageBuffer, Luma};
[INFO] [stdout]   |                                                 ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `linalg::Dot`
[INFO] [stdout]   --> src/network.rs:10:15
[INFO] [stdout]    |
[INFO] [stdout] 10 | use ndarray::{linalg::Dot, Array1, Array2, ArrayD, Axis};
[INFO] [stdout]    |               ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `GenericImageView`
[INFO] [stdout]  --> src/main.rs:1:49
[INFO] [stdout]   |
[INFO] [stdout] 1 | use image::{imageops::FilterType, DynamicImage, GenericImageView, ImageBuffer, Luma};
[INFO] [stdout]   |                                                 ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> src/network.rs:86:13
[INFO] [stdout]    |
[INFO] [stdout] 86 |         let n = training_data.len();
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `count`
[INFO] [stdout]   --> src/network.rs:92:17
[INFO] [stdout]    |
[INFO] [stdout] 92 |             let count = mini_batches.len();
[INFO] [stdout]    |                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_count`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/network.rs:94:18
[INFO] [stdout]    |
[INFO] [stdout] 94 |             for (i, mini_batch) in mini_batches.enumerate() {
[INFO] [stdout]    |                  ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `validation_data`
[INFO] [stdout]   --> src/main.rs:51:25
[INFO] [stdout]    |
[INFO] [stdout] 51 |     let (training_data, validation_data, test_data) = mnist::load_data_wrapper();
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_validation_data`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `sizes` is never read
[INFO] [stdout]   --> src/network.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub struct Network {
[INFO] [stdout]    |            ------- field in this struct
[INFO] [stdout] 35 |     num_layers: usize,
[INFO] [stdout] 36 |     sizes: Vec<usize>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `load` is never used
[INFO] [stdout]    --> src/network.rs:255:12
[INFO] [stdout]     |
[INFO] [stdout] 43  | impl Network {
[INFO] [stdout]     | ------------ associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 255 |     pub fn load(path: &str, sizes: Vec<usize>) -> std::io::Result<Self> {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> src/network.rs:86:13
[INFO] [stdout]    |
[INFO] [stdout] 86 |         let n = training_data.len();
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `count`
[INFO] [stdout]   --> src/network.rs:92:17
[INFO] [stdout]    |
[INFO] [stdout] 92 |             let count = mini_batches.len();
[INFO] [stdout]    |                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_count`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/network.rs:94:18
[INFO] [stdout]    |
[INFO] [stdout] 94 |             for (i, mini_batch) in mini_batches.enumerate() {
[INFO] [stdout]    |                  ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `validation_data`
[INFO] [stdout]   --> src/main.rs:51:25
[INFO] [stdout]    |
[INFO] [stdout] 51 |     let (training_data, validation_data, test_data) = mnist::load_data_wrapper();
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_validation_data`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `sizes` is never read
[INFO] [stdout]   --> src/network.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub struct Network {
[INFO] [stdout]    |            ------- field in this struct
[INFO] [stdout] 35 |     num_layers: usize,
[INFO] [stdout] 36 |     sizes: Vec<usize>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `load` is never used
[INFO] [stdout]    --> src/network.rs:255:12
[INFO] [stdout]     |
[INFO] [stdout] 43  | impl Network {
[INFO] [stdout]     | ------------ associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 255 |     pub fn load(path: &str, sizes: Vec<usize>) -> std::io::Result<Self> {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 30.59s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: nom v3.2.1
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "a4e256b61938a878c2fe8985d18229b46bcfc8c2f2b4c243f440501699d485bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a4e256b61938a878c2fe8985d18229b46bcfc8c2f2b4c243f440501699d485bf", kill_on_drop: false }`
[INFO] [stdout] a4e256b61938a878c2fe8985d18229b46bcfc8c2f2b4c243f440501699d485bf
