[INFO] cloning repository https://github.com/TimTom2016/alphabet_recognizer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/TimTom2016/alphabet_recognizer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTimTom2016%2Falphabet_recognizer", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTimTom2016%2Falphabet_recognizer'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e3b7d30386a9dcee15adf0f499410981987e44ae
[INFO] checking TimTom2016/alphabet_recognizer against master#779e19d8baa3e3625bd4fc5c85cbb2ad47b43155 for pr-147589-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTimTom2016%2Falphabet_recognizer" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/TimTom2016/alphabet_recognizer
[INFO] finished tweaking git repo https://github.com/TimTom2016/alphabet_recognizer
[INFO] tweaked toml for git repo https://github.com/TimTom2016/alphabet_recognizer written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/TimTom2016/alphabet_recognizer on toolchain 779e19d8baa3e3625bd4fc5c85cbb2ad47b43155
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+779e19d8baa3e3625bd4fc5c85cbb2ad47b43155" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/TimTom2016/alphabet_recognizer 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" "+779e19d8baa3e3625bd4fc5c85cbb2ad47b43155" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2024 which implies `resolver = "3"`
[INFO] [stderr]   |
[INFO] [stderr]   = note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr]   = note: to use the edition 2024 resolver, specify `workspace.resolver = "3"` in the workspace root's manifest
[INFO] [stderr]   = note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr] warning: /workspace/builds/worker-7-tc1/source/web/Cargo.toml: `default-features` is ignored for burn, since `default-features` was not specified for `workspace.dependencies.burn`, this could become a hard error in the future
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded wrapcenum-derive v0.4.1
[INFO] [stderr]   Downloaded systemstat v0.2.4
[INFO] [stderr]   Downloaded openblas-src v0.10.11
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[INFO] [stderr]   Downloaded openblas-build v0.10.11
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[INFO] [stderr]   Downloaded pulp v0.21.4
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[INFO] [stderr]   Downloaded gemm-c64 v0.17.1
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[INFO] [stderr]   Downloaded burn-hip v0.16.1
[INFO] [stderr]   Downloaded safetensors v0.3.3
[INFO] [stderr]   Downloaded burn-common v0.16.1
[INFO] [stderr]   Downloaded cubecl-reduce v0.4.0
[INFO] [stderr]   Downloaded text_placeholder v0.5.1
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[INFO] [stderr]   Downloaded accelerate-src v0.3.2
[INFO] [stderr]   Downloaded netlib-src v0.8.0
[INFO] [stderr]   Downloaded burn-dataset v0.16.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+779e19d8baa3e3625bd4fc5c85cbb2ad47b43155" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ee2fdab947ef6f06b27ae78ab48659faae6853ef7a76b7d82afc79faf43665bd
[INFO] running `Command { std: "docker" "start" "-a" "ee2fdab947ef6f06b27ae78ab48659faae6853ef7a76b7d82afc79faf43665bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ee2fdab947ef6f06b27ae78ab48659faae6853ef7a76b7d82afc79faf43665bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ee2fdab947ef6f06b27ae78ab48659faae6853ef7a76b7d82afc79faf43665bd", kill_on_drop: false }`
[INFO] [stdout] ee2fdab947ef6f06b27ae78ab48659faae6853ef7a76b7d82afc79faf43665bd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+779e19d8baa3e3625bd4fc5c85cbb2ad47b43155" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 26abdad4b48298c1c6d3eef7a5be4cf46c1f28c68d0a81af5982962da7ce73e4
[INFO] running `Command { std: "docker" "start" "-a" "26abdad4b48298c1c6d3eef7a5be4cf46c1f28c68d0a81af5982962da7ce73e4", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2024 which implies `resolver = "3"`
[INFO] [stderr]   |
[INFO] [stderr]   = note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr]   = note: to use the edition 2024 resolver, specify `workspace.resolver = "3"` in the workspace root's manifest
[INFO] [stderr]   = note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr] warning: /opt/rustwide/workdir/web/Cargo.toml: `default-features` is ignored for burn, since `default-features` was not specified for `workspace.dependencies.burn`, this could become a hard error in the future
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]     Checking smallvec v1.15.0
[INFO] [stderr]    Compiling libc v0.2.171
[INFO] [stderr]    Compiling libm v0.2.11
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]     Checking yoke v0.7.5
[INFO] [stderr]     Checking futures-util v0.3.31
[INFO] [stderr]     Checking tokio v1.44.2
[INFO] [stderr]    Compiling log v0.4.27
[INFO] [stderr]     Checking tracing v0.1.41
[INFO] [stderr]     Checking zerovec v0.10.4
[INFO] [stderr]     Checking getrandom v0.2.15
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.100
[INFO] [stderr]    Compiling portable-atomic v1.11.0
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking parking_lot_core v0.9.10
[INFO] [stderr]    Compiling bytemuck_derive v1.9.3
[INFO] [stderr]     Checking tinystr v0.7.6
[INFO] [stderr]     Checking icu_collections v1.5.0
[INFO] [stderr]     Checking icu_locid v1.5.0
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[INFO] [stderr]    Compiling jobserver v0.1.33
[INFO] [stderr]     Checking icu_provider v1.5.0
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.100
[INFO] [stderr]    Compiling cc v1.2.18
[INFO] [stderr]     Checking icu_locid_transform v1.5.0
[INFO] [stderr]     Checking ahash v0.8.11
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[INFO] [stderr]     Checking rand_chacha v0.3.1
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[INFO] [stderr]     Checking icu_properties v1.5.1
[INFO] [stderr]     Checking hashbrown v0.14.5
[INFO] [stderr]     Checking parking_lot v0.12.3
[INFO] [stderr]     Checking hashbrown v0.15.2
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.100
[INFO] [stderr]     Checking aho-corasick v1.1.3
[INFO] [stderr]     Checking wasm-bindgen v0.2.100
[INFO] [stderr]     Checking tokio-util v0.7.14
[INFO] [stderr]    Compiling cubecl-common v0.4.0
[INFO] [stderr]     Checking miniz_oxide v0.8.8
[INFO] [stderr]     Checking indexmap v2.9.0
[INFO] [stderr]    Compiling openssl-sys v0.9.106
[INFO] [stderr]    Compiling libsqlite3-sys v0.30.1
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[INFO] [stderr]     Checking spin v0.9.8
[INFO] [stderr]    Compiling openssl v0.10.71
[INFO] [stderr]    Compiling native-tls v0.2.14
[INFO] [stderr]     Checking console v0.15.11
[INFO] [stderr]     Checking h2 v0.4.8
[INFO] [stderr]     Checking num-bigint v0.4.6
[INFO] [stderr]     Checking futures-lite v2.6.0
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[INFO] [stderr]     Checking idna_adapter v1.2.0
[INFO] [stderr]     Checking idna v1.0.3
[INFO] [stderr]    Compiling derive-new v0.6.0
[INFO] [stderr]     Checking url v2.5.4
[INFO] [stderr]     Checking embassy-futures v0.1.1
[INFO] [stderr]    Compiling built v0.7.7
[INFO] [stderr]     Checking v_frame v0.3.8
[INFO] [stderr]    Compiling rav1e v0.7.1
[INFO] [stderr]     Checking indicatif v0.17.11
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[INFO] [stderr]     Checking num-rational v0.4.2
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[INFO] [stderr]     Checking unicode-normalization v0.1.24
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[INFO] [stderr]    Compiling derive-new v0.7.0
[INFO] [stderr]    Compiling profiling-procmacros v1.0.16
[INFO] [stderr]     Checking gix-utils v0.1.14
[INFO] [stderr]     Checking profiling v1.0.16
[INFO] [stderr]     Checking flate2 v1.1.1
[INFO] [stderr]     Checking hyper v1.6.0
[INFO] [stderr]     Checking av1-grain v0.2.3
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[INFO] [stderr]     Checking maybe-rayon v0.1.1
[INFO] [stderr]    Compiling arg_enum_proc_macro v0.3.4
[INFO] [stderr]    Compiling simd_helpers v0.1.0
[INFO] [stderr]     Checking bstr v1.12.0
[INFO] [stderr]    Compiling matrixmultiply v0.3.9
[INFO] [stderr]     Checking fallible-streaming-iterator v0.1.9
[INFO] [stderr]     Checking fallible-iterator v0.3.0
[INFO] [stderr]     Checking gix-trace v0.1.12
[INFO] [stderr]     Checking gix-features v0.39.1
[INFO] [stderr]     Checking globset v0.4.16
[INFO] [stderr]     Checking hyper-util v0.1.11
[INFO] [stderr]     Checking rustix v1.0.5
[INFO] [stderr]     Checking tokio-native-tls v0.3.1
[INFO] [stderr]     Checking thread-tree v0.3.3
[INFO] [stderr]    Compiling toml_datetime v0.6.8
[INFO] [stderr]    Compiling serde_spanned v0.6.8
[INFO] [stderr]     Checking hyper-tls v0.6.0
[INFO] [stderr]     Checking avif-serialize v0.8.3
[INFO] [stderr]     Checking reqwest v0.12.15
[INFO] [stderr]    Compiling darling_macro v0.20.11
[INFO] [stderr]     Checking rand_distr v0.4.3
[INFO] [stderr]     Checking scheduled-thread-pool v0.2.7
[INFO] [stderr]     Checking serde_bytes v0.11.17
[INFO] [stderr]     Checking colored v2.2.0
[INFO] [stderr]    Compiling darling v0.20.11
[INFO] [stderr]    Compiling serde_json v1.0.140
[INFO] [stderr]    Compiling rustix v0.38.44
[INFO] [stderr]    Compiling winnow v0.7.6
[INFO] [stderr]     Checking tiff v0.9.1
[INFO] [stderr]     Checking exr v1.73.0
[INFO] [stderr]     Checking burn-common v0.16.1
[INFO] [stderr]     Checking time v0.3.41
[INFO] [stderr]     Checking burn-tensor v0.16.1
[INFO] [stderr]     Checking zune-jpeg v0.4.14
[INFO] [stderr]     Checking rmp v0.8.14
[INFO] [stderr]     Checking dirs-sys v0.4.1
[INFO] [stderr]     Checking image-webp v0.2.1
[INFO] [stderr]     Checking png v0.17.16
[INFO] [stderr]    Compiling toml_edit v0.22.24
[INFO] [stderr]     Checking r2d2 v0.8.10
[INFO] [stderr]     Checking ravif v0.11.11
[INFO] [stderr]     Checking tempfile v3.19.1
[INFO] [stderr]     Checking uuid v1.16.0
[INFO] [stderr]    Compiling rstest_macros v0.23.0
[INFO] [stderr]     Checking ignore v0.4.23
[INFO] [stderr]     Checking gix-fs v0.12.1
[INFO] [stderr]     Checking regex v1.11.1
[INFO] [stderr]     Checking dashmap v6.1.0
[INFO] [stderr]     Checking qoi v0.4.1
[INFO] [stderr]     Checking num-complex v0.4.6
[INFO] [stderr]     Checking csv-core v0.1.12
[INFO] [stderr]     Checking linux-raw-sys v0.4.15
[INFO] [stderr]    Compiling burn-ndarray v0.16.1
[INFO] [stderr]     Checking ndarray v0.16.1
[INFO] [stderr]     Checking csv v1.3.1
[INFO] [stderr]     Checking gix-tempfile v15.0.0
[INFO] [stderr]     Checking sanitize-filename v0.6.0
[INFO] [stderr]     Checking event-listener v5.4.0
[INFO] [stderr]     Checking globwalk v0.9.1
[INFO] [stderr]     Checking image v0.25.6
[INFO] [stderr]     Checking dirs v5.0.1
[INFO] [stderr]     Checking rmp-serde v1.3.0
[INFO] [stderr]     Checking burn-autodiff v0.16.1
[INFO] [stderr]     Checking signal-hook-mio v0.2.4
[INFO] [stderr]     Checking futures-executor v0.3.31
[INFO] [stderr]     Checking castaway v0.2.3
[INFO] [stderr]     Checking itertools v0.13.0
[INFO] [stderr]    Compiling proc-macro-crate v3.3.0
[INFO] [stderr]     Checking unty v0.0.4
[INFO] [stderr]    Compiling relative-path v1.9.3
[INFO] [stderr]     Checking atomic_float v1.1.0
[INFO] [stderr]    Compiling instability v0.3.7
[INFO] [stderr]     Checking bincode v2.0.1
[INFO] [stderr]     Checking tracing-subscriber v0.3.19
[INFO] [stderr]     Checking nvml-wrapper-sys v0.8.0
[INFO] [stderr]     Checking futures v0.3.31
[INFO] [stderr]     Checking compact_str v0.8.1
[INFO] [stderr]     Checking unicode-truncate v1.1.0
[INFO] [stderr]     Checking crossterm v0.28.1
[INFO] [stderr]     Checking event-listener-strategy v0.5.4
[INFO] [stderr]    Compiling wrapcenum-derive v0.4.1
[INFO] [stderr]    Compiling burn-derive v0.16.1
[INFO] [stderr]     Checking lru v0.12.5
[INFO] [stderr]     Checking rusqlite v0.32.1
[INFO] [stderr]     Checking futures-timer v3.0.3
[INFO] [stderr]     Checking bytesize v1.3.3
[INFO] [stderr]     Checking data-encoding v2.8.0
[INFO] [stderr]     Checking systemstat v0.2.4
[INFO] [stderr]     Checking nvml-wrapper v0.10.0
[INFO] [stderr]     Checking async-channel v2.3.1
[INFO] [stderr]     Checking ratatui v0.29.0
[INFO] [stderr]     Checking tracing-appender v0.2.3
[INFO] [stderr]     Checking sysinfo v0.32.1
[INFO] [stderr]     Checking js-sys v0.3.77
[INFO] [stderr]     Checking console_error_panic_hook v0.1.7
[INFO] [stderr]     Checking serde_rusqlite v0.36.0
[INFO] [stderr]     Checking r2d2_sqlite v0.25.0
[INFO] [stderr]     Checking burn-dataset v0.16.1
[INFO] [stderr]     Checking burn-core v0.16.1
[INFO] [stderr]     Checking rstest v0.23.0
[INFO] [stderr]     Checking wasm-bindgen-futures v0.4.50
[INFO] [stderr]     Checking burn-train v0.16.1
[INFO] [stderr]     Checking burn v0.16.1
[INFO] [stderr]     Checking shared v0.0.0 (/opt/rustwide/workdir/shared)
[INFO] [stderr]     Checking web v0.0.0 (/opt/rustwide/workdir/web)
[INFO] [stderr]     Checking train v0.0.0 (/opt/rustwide/workdir/train)
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]   --> web/src/web.rs:52:53
[INFO] [stdout]    |
[INFO] [stdout] 52 |         let input: Vec<f32> = input.iter().map(|&x| (x / 255.0)).collect();
[INFO] [stdout]    |                                                     ^         ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 52 -         let input: Vec<f32> = input.iter().map(|&x| (x / 255.0)).collect();
[INFO] [stdout] 52 +         let input: Vec<f32> = input.iter().map(|&x| x / 255.0).collect();
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]   --> train/src/train.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | use std::collections::HashMap;
[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: `std::collections::HashMap`
[INFO] [stdout]   --> train/src/train.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | use std::collections::HashMap;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]   --> web/src/web.rs:52:53
[INFO] [stdout]    |
[INFO] [stdout] 52 |         let input: Vec<f32> = input.iter().map(|&x| (x / 255.0)).collect();
[INFO] [stdout]    |                                                     ^         ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 52 -         let input: Vec<f32> = input.iter().map(|&x| (x / 255.0)).collect();
[INFO] [stdout] 52 +         let input: Vec<f32> = input.iter().map(|&x| x / 255.0).collect();
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `ARTIFACT_DIR` is never used
[INFO] [stdout]   --> train/src/train.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | static ARTIFACT_DIR: &str = "/tmp/alphabet_recognizer";
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `CustomDataset` is never constructed
[INFO] [stdout]   --> train/src/train.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub struct CustomDataset {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> train/src/train.rs:28:12
[INFO] [stdout]    |
[INFO] [stdout] 27 | impl CustomDataset {
[INFO] [stdout]    | ------------------ associated function in this implementation
[INFO] [stdout] 28 |     pub fn new(items: Vec<FileItem>) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `CustomTrainingConfig` is never constructed
[INFO] [stdout]   --> train/src/train.rs:44:12
[INFO] [stdout]    |
[INFO] [stdout] 44 | pub struct CustomTrainingConfig {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `create_artifact_dir` is never used
[INFO] [stdout]   --> train/src/train.rs:60:4
[INFO] [stdout]    |
[INFO] [stdout] 60 | fn create_artifact_dir(artifact_dir: &str) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]   --> train/src/train.rs:65:8
[INFO] [stdout]    |
[INFO] [stdout] 65 | pub fn run<B: AutodiffBackend>(device: B::Device) {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `ARTIFACT_DIR` is never used
[INFO] [stdout]   --> train/src/train.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | static ARTIFACT_DIR: &str = "/tmp/alphabet_recognizer";
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `CustomDataset` is never constructed
[INFO] [stdout]   --> train/src/train.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub struct CustomDataset {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> train/src/train.rs:28:12
[INFO] [stdout]    |
[INFO] [stdout] 27 | impl CustomDataset {
[INFO] [stdout]    | ------------------ associated function in this implementation
[INFO] [stdout] 28 |     pub fn new(items: Vec<FileItem>) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `CustomTrainingConfig` is never constructed
[INFO] [stdout]   --> train/src/train.rs:44:12
[INFO] [stdout]    |
[INFO] [stdout] 44 | pub struct CustomTrainingConfig {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `create_artifact_dir` is never used
[INFO] [stdout]   --> train/src/train.rs:60:4
[INFO] [stdout]    |
[INFO] [stdout] 60 | fn create_artifact_dir(artifact_dir: &str) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]   --> train/src/train.rs:65:8
[INFO] [stdout]    |
[INFO] [stdout] 65 | pub fn run<B: AutodiffBackend>(device: B::Device) {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2m 34s
[INFO] running `Command { std: "docker" "inspect" "26abdad4b48298c1c6d3eef7a5be4cf46c1f28c68d0a81af5982962da7ce73e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "26abdad4b48298c1c6d3eef7a5be4cf46c1f28c68d0a81af5982962da7ce73e4", kill_on_drop: false }`
[INFO] [stdout] 26abdad4b48298c1c6d3eef7a5be4cf46c1f28c68d0a81af5982962da7ce73e4