[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] testing TimTom2016/alphabet_recognizer against try#db823df02fd0c2cf67b43025ac3fef3f2d743245 for pr-150681
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTimTom2016%2Falphabet_recognizer" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/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-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/TimTom2016/alphabet_recognizer on toolchain db823df02fd0c2cf67b43025ac3fef3f2d743245
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "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" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "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-6-tc2/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]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b9bde54c8e344d9d8888cc87482b289f094a18d541955f5f966d6a455c08d2ce
[INFO] running `Command { std: "docker" "start" "-a" "b9bde54c8e344d9d8888cc87482b289f094a18d541955f5f966d6a455c08d2ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b9bde54c8e344d9d8888cc87482b289f094a18d541955f5f966d6a455c08d2ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b9bde54c8e344d9d8888cc87482b289f094a18d541955f5f966d6a455c08d2ce", kill_on_drop: false }`
[INFO] [stdout] b9bde54c8e344d9d8888cc87482b289f094a18d541955f5f966d6a455c08d2ce
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 62ff9030baac61f27f9850f286e4d89870a5e20748bc94aedddf26279cfb8860
[INFO] running `Command { std: "docker" "start" "-a" "62ff9030baac61f27f9850f286e4d89870a5e20748bc94aedddf26279cfb8860", 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 proc-macro2 v1.0.94
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[INFO] [stderr]    Compiling async-channel v2.3.1
[INFO] [stderr]    Compiling sysinfo v0.32.1
[INFO] [stderr]    Compiling native-tls v0.2.14
[INFO] [stderr]    Compiling synstructure v0.13.1
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.100
[INFO] [stderr]    Compiling darling_core v0.20.11
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[INFO] [stderr]    Compiling yoke-derive v0.7.5
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[INFO] [stderr]    Compiling thiserror-impl v2.0.12
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[INFO] [stderr]    Compiling profiling-procmacros v1.0.16
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[INFO] [stderr]    Compiling arg_enum_proc_macro v0.3.4
[INFO] [stderr]    Compiling profiling v1.0.16
[INFO] [stderr]    Compiling bytemuck v1.22.0
[INFO] [stderr]    Compiling num-derive v0.4.2
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[INFO] [stderr]    Compiling burn-derive v0.16.1
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[INFO] [stderr]    Compiling thiserror v1.0.69
[INFO] [stderr]    Compiling tracing-appender v0.2.3
[INFO] [stderr]    Compiling thiserror v2.0.12
[INFO] [stderr]    Compiling darling_macro v0.20.11
[INFO] [stderr]    Compiling darling v0.20.11
[INFO] [stderr]    Compiling wrapcenum-derive v0.4.1
[INFO] [stderr]    Compiling instability v0.3.7
[INFO] [stderr]    Compiling nvml-wrapper v0.10.0
[INFO] [stderr]    Compiling strum v0.26.3
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[INFO] [stderr]    Compiling icu_collections v1.5.0
[INFO] [stderr]    Compiling js-sys v0.3.77
[INFO] [stderr]    Compiling console_error_panic_hook v0.1.7
[INFO] [stderr]    Compiling icu_locid v1.5.0
[INFO] [stderr]    Compiling icu_provider v1.5.0
[INFO] [stderr]    Compiling icu_locid_transform v1.5.0
[INFO] [stderr]    Compiling futures-executor v0.3.31
[INFO] [stderr]    Compiling futures v0.3.31
[INFO] [stderr]    Compiling tokio-util v0.7.14
[INFO] [stderr]    Compiling tokio-native-tls v0.3.1
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[INFO] [stderr]    Compiling icu_properties v1.5.1
[INFO] [stderr]    Compiling wasm-bindgen-futures v0.4.50
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[INFO] [stderr]    Compiling serde_urlencoded v0.7.1
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[INFO] [stderr]    Compiling faster-hex v0.9.0
[INFO] [stderr]    Compiling toml_datetime v0.6.8
[INFO] [stderr]    Compiling serde_bytes v0.11.17
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[INFO] [stderr]    Compiling csv v1.3.1
[INFO] [stderr]    Compiling rmp-serde v1.3.0
[INFO] [stderr]    Compiling bincode v2.0.1
[INFO] [stderr]    Compiling icu_normalizer v1.5.0
[INFO] [stderr]    Compiling gix-hash v0.15.1
[INFO] [stderr]    Compiling idna_adapter v1.2.0
[INFO] [stderr]    Compiling gix-features v0.39.1
[INFO] [stderr]    Compiling exr v1.73.0
[INFO] [stderr]    Compiling idna v1.0.3
[INFO] [stderr]    Compiling gix-fs v0.12.1
[INFO] [stderr]    Compiling gix-tempfile v15.0.0
[INFO] [stderr]    Compiling indexmap v2.9.0
[INFO] [stderr]    Compiling lru v0.12.5
[INFO] [stderr]    Compiling url v2.5.4
[INFO] [stderr]    Compiling ratatui v0.29.0
[INFO] [stderr]    Compiling rusqlite v0.32.1
[INFO] [stderr]    Compiling h2 v0.4.8
[INFO] [stderr]    Compiling toml_edit v0.22.24
[INFO] [stderr]    Compiling ravif v0.11.11
[INFO] [stderr]    Compiling serde_rusqlite v0.36.0
[INFO] [stderr]    Compiling r2d2_sqlite v0.25.0
[INFO] [stderr]    Compiling proc-macro-crate v3.3.0
[INFO] [stderr]    Compiling image v0.25.6
[INFO] [stderr]    Compiling hyper v1.6.0
[INFO] [stderr]    Compiling hyper-util v0.1.11
[INFO] [stderr]    Compiling hyper-tls v0.6.0
[INFO] [stderr]    Compiling reqwest v0.12.15
[INFO] [stderr]    Compiling rstest v0.23.0
[INFO] [stderr]    Compiling burn-common v0.16.1
[INFO] [stderr]    Compiling burn-tensor v0.16.1
[INFO] [stderr]    Compiling burn-dataset v0.16.1
[INFO] [stderr]    Compiling burn-autodiff v0.16.1
[INFO] [stderr]    Compiling burn-core v0.16.1
[INFO] [stderr]    Compiling burn-train v0.16.1
[INFO] [stderr]    Compiling burn v0.16.1
[INFO] [stderr]    Compiling shared v0.0.0 (/opt/rustwide/workdir/shared)
[INFO] [stderr]    Compiling train v0.0.0 (/opt/rustwide/workdir/train)
[INFO] [stderr]    Compiling web v0.0.0 (/opt/rustwide/workdir/web)
[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] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2m 11s
[INFO] running `Command { std: "docker" "inspect" "62ff9030baac61f27f9850f286e4d89870a5e20748bc94aedddf26279cfb8860", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "62ff9030baac61f27f9850f286e4d89870a5e20748bc94aedddf26279cfb8860", kill_on_drop: false }`
[INFO] [stdout] 62ff9030baac61f27f9850f286e4d89870a5e20748bc94aedddf26279cfb8860
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 308e8261b49ea06e9d2b07a2593226e67c6fe2a6c35b0b43703a9a75510d3666
[INFO] running `Command { std: "docker" "start" "-a" "308e8261b49ea06e9d2b07a2593226e67c6fe2a6c35b0b43703a9a75510d3666", 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 shared v0.0.0 (/opt/rustwide/workdir/shared)
[INFO] [stderr]    Compiling train v0.0.0 (/opt/rustwide/workdir/train)
[INFO] [stderr]    Compiling web v0.0.0 (/opt/rustwide/workdir/web)
[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: 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 `test` profile [unoptimized + debuginfo] target(s) in 5.06s
[INFO] running `Command { std: "docker" "inspect" "308e8261b49ea06e9d2b07a2593226e67c6fe2a6c35b0b43703a9a75510d3666", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "308e8261b49ea06e9d2b07a2593226e67c6fe2a6c35b0b43703a9a75510d3666", kill_on_drop: false }`
[INFO] [stdout] 308e8261b49ea06e9d2b07a2593226e67c6fe2a6c35b0b43703a9a75510d3666
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 7cf5b1491482f5e75b99ae289ad27394e169bb98b1b27d7252f06452db108f95
[INFO] running `Command { std: "docker" "start" "-a" "7cf5b1491482f5e75b99ae289ad27394e169bb98b1b27d7252f06452db108f95", 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] warning: unused import: `std::collections::HashMap`
[INFO] [stderr]   --> train/src/train.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 | use std::collections::HashMap;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: static `ARTIFACT_DIR` is never used
[INFO] [stderr]   --> train/src/train.rs:20:8
[INFO] [stderr]    |
[INFO] [stderr] 20 | static ARTIFACT_DIR: &str = "/tmp/alphabet_recognizer";
[INFO] [stderr]    |        ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct `CustomDataset` is never constructed
[INFO] [stderr]   --> train/src/train.rs:23:12
[INFO] [stderr]    |
[INFO] [stderr] 23 | pub struct CustomDataset {
[INFO] [stderr]    |            ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `new` is never used
[INFO] [stderr]   --> train/src/train.rs:28:12
[INFO] [stderr]    |
[INFO] [stderr] 27 | impl CustomDataset {
[INFO] [stderr]    | ------------------ associated function in this implementation
[INFO] [stderr] 28 |     pub fn new(items: Vec<FileItem>) -> Self {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `CustomTrainingConfig` is never constructed
[INFO] [stderr]   --> train/src/train.rs:44:12
[INFO] [stderr]    |
[INFO] [stderr] 44 | pub struct CustomTrainingConfig {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `create_artifact_dir` is never used
[INFO] [stderr]   --> train/src/train.rs:60:4
[INFO] [stderr]    |
[INFO] [stderr] 60 | fn create_artifact_dir(artifact_dir: &str) {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `run` is never used
[INFO] [stderr]   --> train/src/train.rs:65:8
[INFO] [stderr]    |
[INFO] [stderr] 65 | pub fn run<B: AutodiffBackend>(device: B::Device) {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around closure body
[INFO] [stderr]   --> web/src/web.rs:52:53
[INFO] [stderr]    |
[INFO] [stderr] 52 |         let input: Vec<f32> = input.iter().map(|&x| (x / 255.0)).collect();
[INFO] [stderr]    |                                                     ^         ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 52 -         let input: Vec<f32> = input.iter().map(|&x| (x / 255.0)).collect();
[INFO] [stderr] 52 +         let input: Vec<f32> = input.iter().map(|&x| x / 255.0).collect();
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: `train` (bin "train" test) generated 7 warnings (run `cargo fix --bin "train" -p train --tests` to apply 1 suggestion)
[INFO] [stderr] warning: `web` (lib test) generated 1 warning (run `cargo fix --lib -p web --tests` to apply 1 suggestion)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.55s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/shared-0fcedbc015d3f554)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/train-f763c05092a4920b)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/web-c7e2e98487210e00)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests shared
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "7cf5b1491482f5e75b99ae289ad27394e169bb98b1b27d7252f06452db108f95", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7cf5b1491482f5e75b99ae289ad27394e169bb98b1b27d7252f06452db108f95", kill_on_drop: false }`
[INFO] [stdout] 7cf5b1491482f5e75b99ae289ad27394e169bb98b1b27d7252f06452db108f95