[INFO] cloning repository https://github.com/dik654/dezero_rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dik654/dezero_rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdik654%2Fdezero_rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdik654%2Fdezero_rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 86c8e954e283ac186e2bcb1585d26dc84ca45f1b
[INFO] fixing dik654/dezero_rs against try#622891a4e29178280638a6b63a8908bde2c0c854+cargoflags=-Zfix-edition=start=2015 for pr-157817-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdik654%2Fdezero_rs" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/dik654/dezero_rs
[INFO] removed 0 missing tests
[INFO] finished tweaking git repo https://github.com/dik654/dezero_rs
[INFO] tweaked toml for git repo https://github.com/dik654/dezero_rs written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/dik654/dezero_rs on toolchain 622891a4e29178280638a6b63a8908bde2c0c854
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/dik654/dezero_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" "+622891a4e29178280638a6b63a8908bde2c0c854" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ureq v3.2.0
[INFO] [stderr]   Downloaded portable-atomic-util v0.2.5
[INFO] [stderr]   Downloaded ureq-proto v0.5.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3a6becf2bc8dde7f3fa57ede90e4f284e72d296796fc446bbb1e2c7cc0530151" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 51eeb66643b607b2a05e79d3307dce60098ba98d48fa6c9f210692cc7a37c26c
[INFO] running `Command { std: "docker" "start" "51eeb66643b607b2a05e79d3307dce60098ba98d48fa6c9f210692cc7a37c26c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "51eeb66643b607b2a05e79d3307dce60098ba98d48fa6c9f210692cc7a37c26c" "/opt/rustwide/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "51eeb66643b607b2a05e79d3307dce60098ba98d48fa6c9f210692cc7a37c26c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=" "-e" "RUSTDOCFLAGS=" "-w" "/opt/rustwide/workdir" "--user" "0:0" "51eeb66643b607b2a05e79d3307dce60098ba98d48fa6c9f210692cc7a37c26c" "/opt/rustwide/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "fix" "--allow-no-vcs" "--allow-dirty" "--frozen" "--all" "--all-targets" "--message-format=json" "-Zfix-edition=start=2015", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.182
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling httparse v1.10.1
[INFO] [stderr]    Compiling matrixmultiply v0.3.10
[INFO] [stderr]    Compiling rustls v0.23.36
[INFO] [stderr]     Checking itoa v1.0.17
[INFO] [stderr]     Checking log v0.4.29
[INFO] [stderr]     Checking simd-adler32 v0.3.8
[INFO] [stderr]    Compiling cc v1.2.56
[INFO] [stderr]     Checking once_cell v1.21.3
[INFO] [stderr]     Checking rawpointer v0.2.1
[INFO] [stderr]     Checking http v1.4.0
[INFO] [stderr]     Checking miniz_oxide v0.8.9
[INFO] [stderr]     Checking flate2 v1.1.9
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking num-complex v0.4.6
[INFO] [stderr]     Checking ureq-proto v0.5.3
[INFO] [stderr]    Compiling ring v0.17.14
[INFO] [stderr]     Checking ndarray v0.16.1
[INFO] [stderr]     Checking getrandom v0.2.17
[INFO] [stderr]     Checking rustls-webpki v0.103.9
[INFO] [stderr]     Checking ureq v3.2.0
[INFO] [stderr]     Checking dezero v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `n_embd` is never read
[INFO] [stdout]     --> src/lib.rs:2331:5
[INFO] [stdout]      |
[INFO] [stdout] 2329 | pub struct SelfAttention {
[INFO] [stdout]      |            ------------- field in this struct
[INFO] [stdout] 2330 |     n_head: usize,
[INFO] [stdout] 2331 |     n_embd: usize,
[INFO] [stdout]      |     ^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `max_seq_len` is never read
[INFO] [stdout]     --> src/lib.rs:2769:5
[INFO] [stdout]      |
[INFO] [stdout] 2762 | pub struct BERT {
[INFO] [stdout]      |            ---- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 2769 |     max_seq_len: usize,
[INFO] [stdout]      |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `vocab_size` and `embed_dim` are never read
[INFO] [stdout]     --> src/lib.rs:2992:5
[INFO] [stdout]      |
[INFO] [stdout] 2989 | pub struct Word2Vec {
[INFO] [stdout]      |            -------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 2992 |     vocab_size: usize,
[INFO] [stdout]      |     ^^^^^^^^^^
[INFO] [stdout] 2993 |     embed_dim: usize,
[INFO] [stdout]      |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `proj_dim` is never read
[INFO] [stdout]     --> src/lib.rs:3292:5
[INFO] [stdout]      |
[INFO] [stdout] 3284 | pub struct SentenceEmbedding {
[INFO] [stdout]      |            ----------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 3292 |     proj_dim: usize,
[INFO] [stdout]      |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `n_embd` is never read
[INFO] [stdout]     --> src/lib.rs:2331:5
[INFO] [stdout]      |
[INFO] [stdout] 2329 | pub struct SelfAttention {
[INFO] [stdout]      |            ------------- field in this struct
[INFO] [stdout] 2330 |     n_head: usize,
[INFO] [stdout] 2331 |     n_embd: usize,
[INFO] [stdout]      |     ^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `max_seq_len` is never read
[INFO] [stdout]     --> src/lib.rs:2769:5
[INFO] [stdout]      |
[INFO] [stdout] 2762 | pub struct BERT {
[INFO] [stdout]      |            ---- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 2769 |     max_seq_len: usize,
[INFO] [stdout]      |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `vocab_size` and `embed_dim` are never read
[INFO] [stdout]     --> src/lib.rs:2992:5
[INFO] [stdout]      |
[INFO] [stdout] 2989 | pub struct Word2Vec {
[INFO] [stdout]      |            -------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 2992 |     vocab_size: usize,
[INFO] [stdout]      |     ^^^^^^^^^^
[INFO] [stdout] 2993 |     embed_dim: usize,
[INFO] [stdout]      |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `proj_dim` is never read
[INFO] [stdout]     --> src/lib.rs:3292:5
[INFO] [stdout]      |
[INFO] [stdout] 3284 | pub struct SentenceEmbedding {
[INFO] [stdout]      |            ----------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 3292 |     proj_dim: usize,
[INFO] [stdout]      |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `cleargrad` is never used
[INFO] [stdout]   --> steps/step18.rs:82:8
[INFO] [stdout]    |
[INFO] [stdout] 63 | impl Variable {
[INFO] [stdout]    | ------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 82 |     fn cleargrad(&self) {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]   --> steps/step70.rs:50:9
[INFO] [stdout]    |
[INFO] [stdout] 50 |         ((*rng >> 33) as usize)
[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] 50 -         ((*rng >> 33) as usize)
[INFO] [stdout] 50 +         (*rng >> 33) as usize
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `grad` is never read
[INFO] [stdout]   --> steps/step12.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | struct VarInner {
[INFO] [stdout]    |        -------- field in this struct
[INFO] [stdout] 15 |     data: ArrayD<f64>,
[INFO] [stdout] 16 |     grad: Option<ArrayD<f64>>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `backward` is never used
[INFO] [stdout]   --> steps/step12.rs:40:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | impl Variable {
[INFO] [stdout]    | ------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 40 |     fn backward(&self) {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `backward` is never used
[INFO] [stdout]   --> steps/step12.rs:73:8
[INFO] [stdout]    |
[INFO] [stdout] 71 | trait Function {
[INFO] [stdout]    |       -------- method in this trait
[INFO] [stdout] 72 |     fn forward(&self, xs: &[ArrayD<f64>]) -> Vec<ArrayD<f64>>;
[INFO] [stdout] 73 |     fn backward(&self, x: &ArrayD<f64>, gy: &ArrayD<f64>) -> ArrayD<f64>;
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Square` is never constructed
[INFO] [stdout]    --> steps/step12.rs:111:8
[INFO] [stdout]     |
[INFO] [stdout] 111 | struct Square;
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> steps/step12.rs:114:8
[INFO] [stdout]     |
[INFO] [stdout] 113 | impl Square {
[INFO] [stdout]     | ----------- associated function in this implementation
[INFO] [stdout] 114 |     fn new() -> Func {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Exp` is never constructed
[INFO] [stdout]    --> steps/step12.rs:131:8
[INFO] [stdout]     |
[INFO] [stdout] 131 | struct Exp;
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> steps/step12.rs:134:8
[INFO] [stdout]     |
[INFO] [stdout] 133 | impl Exp {
[INFO] [stdout]     | -------- associated function in this implementation
[INFO] [stdout] 134 |     fn new() -> Func {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `square` is never used
[INFO] [stdout]    --> steps/step12.rs:171:4
[INFO] [stdout]     |
[INFO] [stdout] 171 | fn square(x: &Variable) -> Variable {
[INFO] [stdout]     |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `exp` is never used
[INFO] [stdout]    --> steps/step12.rs:175:4
[INFO] [stdout]     |
[INFO] [stdout] 175 | fn exp(x: &Variable) -> Variable {
[INFO] [stdout]     |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `cleargrad` is never used
[INFO] [stdout]   --> steps/step17.rs:55:8
[INFO] [stdout]    |
[INFO] [stdout] 36 | impl Variable {
[INFO] [stdout]    | ------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 55 |     fn cleargrad(&self) {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `dropout`
[INFO] [stdout]   --> steps/step66.rs:20:25
[INFO] [stdout]    |
[INFO] [stdout] 20 |     no_grad, test_mode, dropout, sum,
[INFO] [stdout]    |                         ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `NoGradGuard` is never constructed
[INFO] [stdout]   --> steps/step21.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | struct NoGradGuard {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `no_grad` is never used
[INFO] [stdout]   --> steps/step21.rs:19:4
[INFO] [stdout]    |
[INFO] [stdout] 19 | fn no_grad() -> NoGradGuard {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `with_name`, `shape`, `ndim`, `size`, `len`, and `cleargrad` are never used
[INFO] [stdout]    --> steps/step21.rs:68:8
[INFO] [stdout]     |
[INFO] [stdout]  55 | impl Variable {
[INFO] [stdout]     | ------------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout]  68 |     fn with_name(data: ArrayD<f64>, name: &str) -> Self {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  80 |     fn shape(&self) -> Vec<usize> {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  84 |     fn ndim(&self) -> usize {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout]  88 |     fn size(&self) -> usize {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout]  92 |     fn len(&self) -> usize {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 103 |     fn cleargrad(&self) {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Exp` is never constructed
[INFO] [stdout]    --> steps/step13.rs:144:8
[INFO] [stdout]     |
[INFO] [stdout] 144 | struct Exp;
[INFO] [stdout]     |        ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> steps/step13.rs:147:8
[INFO] [stdout]     |
[INFO] [stdout] 146 | impl Exp {
[INFO] [stdout]     | -------- associated function in this implementation
[INFO] [stdout] 147 |     fn new() -> Func {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `NoGradGuard` is never constructed
[INFO] [stdout]   --> steps/step19.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | struct NoGradGuard {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `no_grad` is never used
[INFO] [stdout]   --> steps/step19.rs:20:4
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn no_grad() -> NoGradGuard {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `func`, `generation`, `inputs`, and `outputs` are never read
[INFO] [stdout]   --> steps/step19.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 34 | struct FuncState {
[INFO] [stdout]    |        --------- fields in this struct
[INFO] [stdout] 35 |     func: Box<dyn Function>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 36 |     generation: u32,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 37 |     inputs: Vec<Variable>,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 38 |     outputs: Vec<Weak<RefCell<VarInner>>>,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `grad`, `creator`, and `generation` are never read
[INFO] [stdout]   --> steps/step19.rs:45:5
[INFO] [stdout]    |
[INFO] [stdout] 43 | struct VarInner {
[INFO] [stdout]    |        -------- fields in this struct
[INFO] [stdout] 44 |     data: ArrayD<f64>,
[INFO] [stdout] 45 |     grad: Option<ArrayD<f64>>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 46 |     creator: Option<FuncStateRef>,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 47 |     generation: u32,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `set_creator`, `cleargrad`, and `backward` are never used
[INFO] [stdout]    --> steps/step19.rs:105:8
[INFO] [stdout]     |
[INFO] [stdout]  56 | impl Variable {
[INFO] [stdout]     | ------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 105 |     fn set_creator(&self, state: &FuncStateRef) {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 112 |     fn cleargrad(&self) {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 116 |     fn backward(&self, retain_grad: bool) {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `forward` and `backward` are never used
[INFO] [stdout]    --> steps/step19.rs:199:8
[INFO] [stdout]     |
[INFO] [stdout] 198 | trait Function {
[INFO] [stdout]     |       -------- methods in this trait
[INFO] [stdout] 199 |     fn forward(&self, xs: &[ArrayD<f64>]) -> Vec<ArrayD<f64>>;
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 200 |     fn backward(&self, xs: &[ArrayD<f64>], gys: &[ArrayD<f64>]) -> Vec<ArrayD<f64>>;
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Func` is never constructed
[INFO] [stdout]    --> steps/step19.rs:203:8
[INFO] [stdout]     |
[INFO] [stdout] 203 | struct Func {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `call` are never used
[INFO] [stdout]    --> steps/step19.rs:208:8
[INFO] [stdout]     |
[INFO] [stdout] 207 | impl Func {
[INFO] [stdout]     | --------- associated items in this implementation
[INFO] [stdout] 208 |     fn new(func: impl Function + 'static) -> Self {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 219 |     fn call(&self, inputs: &[&Variable]) -> Variable {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Square` is never constructed
[INFO] [stdout]    --> steps/step19.rs:252:8
[INFO] [stdout]     |
[INFO] [stdout] 252 | struct Square;
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Add` is never constructed
[INFO] [stdout]    --> steps/step19.rs:264:8
[INFO] [stdout]     |
[INFO] [stdout] 264 | struct Add;
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `square` is never used
[INFO] [stdout]    --> steps/step19.rs:276:4
[INFO] [stdout]     |
[INFO] [stdout] 276 | fn square(x: &Variable) -> Variable {
[INFO] [stdout]     |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add` is never used
[INFO] [stdout]    --> steps/step19.rs:280:4
[INFO] [stdout]     |
[INFO] [stdout] 280 | fn add(x0: &Variable, x1: &Variable) -> Variable {
[INFO] [stdout]     |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `NoGradGuard` is never constructed
[INFO] [stdout]   --> steps/step20.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | struct NoGradGuard {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `no_grad` is never used
[INFO] [stdout]   --> steps/step20.rs:19:4
[INFO] [stdout]    |
[INFO] [stdout] 19 | fn no_grad() -> NoGradGuard {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `with_name`, `shape`, `ndim`, `size`, `len`, and `cleargrad` are never used
[INFO] [stdout]    --> steps/step20.rs:68:8
[INFO] [stdout]     |
[INFO] [stdout]  55 | impl Variable {
[INFO] [stdout]     | ------------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout]  68 |     fn with_name(data: ArrayD<f64>, name: &str) -> Self {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  80 |     fn shape(&self) -> Vec<usize> {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  84 |     fn ndim(&self) -> usize {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout]  88 |     fn size(&self) -> usize {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout]  92 |     fn len(&self) -> usize {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 103 |     fn cleargrad(&self) {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Square` is never constructed
[INFO] [stdout]    --> steps/step20.rs:261:8
[INFO] [stdout]     |
[INFO] [stdout] 261 | struct Square;
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `square` is never used
[INFO] [stdout]    --> steps/step20.rs:302:4
[INFO] [stdout]     |
[INFO] [stdout] 302 | fn square(x: &Variable) -> Variable {
[INFO] [stdout]     |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `target_val`
[INFO] [stdout]    --> steps/step63.rs:143:13
[INFO] [stdout]     |
[INFO] [stdout] 143 |         let target_val = y_data[[0, 1]]; // softmax의 특정 값 하나
[INFO] [stdout]     |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_target_val`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this file contains an unclosed delimiter
[INFO] [stdout]    --> steps/step65.rs:302:15
[INFO] [stdout]     |
[INFO] [stdout]  20 | mod tests {
[INFO] [stdout]     |           - unclosed delimiter
[INFO] [stdout] ...
[INFO] [stdout] 284 |     fn test_batch_independence() {
[INFO] [stdout]     |                                  - unclosed delimiter
[INFO] [stdout] ...
[INFO] [stdout] 301 |         let x1 = Variable::new(
[INFO] [stdout]     |                               - unclosed delimiter
[INFO] [stdout] 302 |             nd
[INFO] [stdout]     |               ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `make_batch` is never used
[INFO] [stdout]   --> steps/step69.rs:81:8
[INFO] [stdout]    |
[INFO] [stdout] 81 |     fn make_batch(
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `dezero` (test "step65") due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unused import: `l2_distance`
[INFO] [stdout]   --> steps/step72.rs:12:13
[INFO] [stdout]    |
[INFO] [stdout] 12 |     kmeans, l2_distance,
[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: `test_mode`
[INFO] [stdout]   --> steps/step67.rs:15:58
[INFO] [stdout]    |
[INFO] [stdout] 15 |     no_grad, reshape, softmax_cross_entropy_simple, sum, test_mode,
[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 variable: `g`
[INFO] [stdout]    --> steps/step72.rs:325:14
[INFO] [stdout]     |
[INFO] [stdout] 325 |         for (g, center) in centers.iter().enumerate() {
[INFO] [stdout]     |              ^ help: if this is intentional, prefix it with an underscore: `_g`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `NoGradGuard` is never constructed
[INFO] [stdout]   --> steps/step22.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | struct NoGradGuard {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `no_grad` is never used
[INFO] [stdout]   --> steps/step22.rs:20:4
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn no_grad() -> NoGradGuard {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `with_name`, `shape`, `ndim`, `size`, `len`, and `cleargrad` are never used
[INFO] [stdout]    --> steps/step22.rs:69:8
[INFO] [stdout]     |
[INFO] [stdout]  56 | impl Variable {
[INFO] [stdout]     | ------------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout]  69 |     fn with_name(data: ArrayD<f64>, name: &str) -> Self {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  81 |     fn shape(&self) -> Vec<usize> {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  85 |     fn ndim(&self) -> usize {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout]  89 |     fn size(&self) -> usize {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout]  93 |     fn len(&self) -> usize {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 110 |     fn cleargrad(&self) {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "51eeb66643b607b2a05e79d3307dce60098ba98d48fa6c9f210692cc7a37c26c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "51eeb66643b607b2a05e79d3307dce60098ba98d48fa6c9f210692cc7a37c26c", kill_on_drop: false }`
[INFO] [stdout] 51eeb66643b607b2a05e79d3307dce60098ba98d48fa6c9f210692cc7a37c26c
