[INFO] updating cached repository tkyk0317/deeplearning_by_rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/tkyk0317/deeplearning_by_rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/tkyk0317/deeplearning_by_rust" "work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/tkyk0317/deeplearning_by_rust"`
[INFO] [stderr] Cloning into 'work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/tkyk0317/deeplearning_by_rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/tkyk0317/deeplearning_by_rust" "work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/tkyk0317/deeplearning_by_rust"`
[INFO] [stderr] Cloning into 'work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/tkyk0317/deeplearning_by_rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c021c5d4b4ea96b3ad4b2b9cab204e2bb43ba3d2
[INFO] sha for GitHub repo tkyk0317/deeplearning_by_rust: c021c5d4b4ea96b3ad4b2b9cab204e2bb43ba3d2
[INFO] validating manifest of tkyk0317/deeplearning_by_rust on toolchain master#0f88167f89fffe321590c5148f21b7d51d44388d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0f88167f89fffe321590c5148f21b7d51d44388d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of tkyk0317/deeplearning_by_rust on toolchain try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing tkyk0317/deeplearning_by_rust
[INFO] finished frobbing tkyk0317/deeplearning_by_rust
[INFO] frobbed toml for tkyk0317/deeplearning_by_rust written to work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/tkyk0317/deeplearning_by_rust/Cargo.toml
[INFO] started frobbing tkyk0317/deeplearning_by_rust
[INFO] finished frobbing tkyk0317/deeplearning_by_rust
[INFO] frobbed toml for tkyk0317/deeplearning_by_rust written to work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/tkyk0317/deeplearning_by_rust/Cargo.toml
[INFO] crate tkyk0317/deeplearning_by_rust already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0f88167f89fffe321590c5148f21b7d51d44388d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking tkyk0317/deeplearning_by_rust against master#0f88167f89fffe321590c5148f21b7d51d44388d for pr-58948
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-58948/worker-3/master#0f88167f89fffe321590c5148f21b7d51d44388d:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/tkyk0317/deeplearning_by_rust:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+0f88167f89fffe321590c5148f21b7d51d44388d-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] c72b119c6930f6e318e6326cfb23eada33ea7f8ecf25fd5c60c169df484f6fef
[INFO] running `"docker" "start" "-a" "c72b119c6930f6e318e6326cfb23eada33ea7f8ecf25fd5c60c169df484f6fef"`
[INFO] [stderr]     Checking gnuplot v0.0.22
[INFO] [stderr]     Checking num-complex v0.1.40
[INFO] [stderr]     Checking mnist v0.4.0
[INFO] [stderr]     Checking generic-array v0.2.1
[INFO] [stderr]     Checking alga v0.5.2
[INFO] [stderr]     Checking nalgebra v0.12.3
[INFO] [stderr]     Checking deeplearning_from_scratch v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused imports: `AxesCommon`, `Caption`, `Color`, `Figure`, `Fix`
[INFO] [stderr]  --> src/main.rs:7:15
[INFO] [stderr]   |
[INFO] [stderr] 7 | use gnuplot::{Figure, Caption, Color, AxesCommon, Fix};
[INFO] [stderr]   |               ^^^^^^  ^^^^^^^  ^^^^^  ^^^^^^^^^^  ^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::vec::Vec`
[INFO] [stderr]  --> src/main.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::vec::Vec;
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::rc::Rc`
[INFO] [stderr]  --> src/neuron.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::rc::Rc;
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::cell::RefCell`
[INFO] [stderr]  --> src/neuron.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::cell::RefCell;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::rc::Rc`
[INFO] [stderr]  --> src/neuron.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::rc::Rc;
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::cell::RefCell`
[INFO] [stderr]  --> src/neuron.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::cell::RefCell;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rows`
[INFO] [stderr]   --> src/main.rs:87:16
[INFO] [stderr]    |
[INFO] [stderr] 87 |     let (size, rows, cols) = (50_000, 28, 28);
[INFO] [stderr]    |                ^^^^ help: consider prefixing with an underscore: `_rows`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `cols`
[INFO] [stderr]   --> src/main.rs:87:22
[INFO] [stderr]    |
[INFO] [stderr] 87 |     let (size, rows, cols) = (50_000, 28, 28);
[INFO] [stderr]    |                      ^^^^ help: consider prefixing with an underscore: `_cols`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `trn_lbl`
[INFO] [stderr]   --> src/main.rs:88:26
[INFO] [stderr]    |
[INFO] [stderr] 88 |     let Mnist { trn_img, trn_lbl, .. } = MnistBuilder::new().label_format_digit()
[INFO] [stderr]    |                          ^^^^^^^ help: try ignoring the field: `trn_lbl: _`
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `step`
[INFO] [stderr]   --> src/neuron.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 |     pub fn step(&self) -> DMatrix<f64> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `relu`
[INFO] [stderr]   --> src/neuron.rs:41:5
[INFO] [stderr]    |
[INFO] [stderr] 41 |     pub fn relu(&self) -> DMatrix<f64> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `numerical_diff`
[INFO] [stderr]   --> src/gradient.rs:57:5
[INFO] [stderr]    |
[INFO] [stderr] 57 |     pub fn numerical_diff<F: ::std::ops::Fn(f64) -> f64>(x: f64, func: F) -> f64 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `sum_of_square`
[INFO] [stderr]  --> src/loss_func.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub fn sum_of_square(result: &DMatrix<f64>, reference: &DMatrix<f64>) -> f64 {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rows`
[INFO] [stderr]   --> src/main.rs:87:16
[INFO] [stderr]    |
[INFO] [stderr] 87 |     let (size, rows, cols) = (50_000, 28, 28);
[INFO] [stderr]    |                ^^^^ help: consider prefixing with an underscore: `_rows`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `cols`
[INFO] [stderr]   --> src/main.rs:87:22
[INFO] [stderr]    |
[INFO] [stderr] 87 |     let (size, rows, cols) = (50_000, 28, 28);
[INFO] [stderr]    |                      ^^^^ help: consider prefixing with an underscore: `_cols`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `trn_lbl`
[INFO] [stderr]   --> src/main.rs:88:26
[INFO] [stderr]    |
[INFO] [stderr] 88 |     let Mnist { trn_img, trn_lbl, .. } = MnistBuilder::new().label_format_digit()
[INFO] [stderr]    |                          ^^^^^^^ help: try ignoring the field: `trn_lbl: _`
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `step`
[INFO] [stderr]   --> src/neuron.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 |     pub fn step(&self) -> DMatrix<f64> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `relu`
[INFO] [stderr]   --> src/neuron.rs:41:5
[INFO] [stderr]    |
[INFO] [stderr] 41 |     pub fn relu(&self) -> DMatrix<f64> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `numerical_diff`
[INFO] [stderr]   --> src/gradient.rs:57:5
[INFO] [stderr]    |
[INFO] [stderr] 57 |     pub fn numerical_diff<F: ::std::ops::Fn(f64) -> f64>(x: f64, func: F) -> f64 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `sum_of_square`
[INFO] [stderr]  --> src/loss_func.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub fn sum_of_square(result: &DMatrix<f64>, reference: &DMatrix<f64>) -> f64 {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 30.84s
[INFO] running `"docker" "inspect" "c72b119c6930f6e318e6326cfb23eada33ea7f8ecf25fd5c60c169df484f6fef"`
[INFO] running `"docker" "rm" "-f" "c72b119c6930f6e318e6326cfb23eada33ea7f8ecf25fd5c60c169df484f6fef"`
[INFO] [stdout] c72b119c6930f6e318e6326cfb23eada33ea7f8ecf25fd5c60c169df484f6fef