[INFO] cloning repository https://github.com/wolfandreh/mnist-digit-recognition-in-rust [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/wolfandreh/mnist-digit-recognition-in-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwolfandreh%2Fmnist-digit-recognition-in-rust", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwolfandreh%2Fmnist-digit-recognition-in-rust'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] fdbb50fd91df2be4d23620cfce14c1bcb7be6b2d [INFO] checking wolfandreh/mnist-digit-recognition-in-rust against try#3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f for pr-87248 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwolfandreh%2Fmnist-digit-recognition-in-rust" "/workspace/builds/worker-10/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/wolfandreh/mnist-digit-recognition-in-rust on toolchain 3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/wolfandreh/mnist-digit-recognition-in-rust [INFO] finished tweaking git repo https://github.com/wolfandreh/mnist-digit-recognition-in-rust [INFO] tweaked toml for git repo https://github.com/wolfandreh/mnist-digit-recognition-in-rust written to /workspace/builds/worker-10/source/Cargo.toml [INFO] crate git repo https://github.com/wolfandreh/mnist-digit-recognition-in-rust already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 3462a1c08442e31b321a48f2ac771137568d648a2d5423ce038b708b4b6607df [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "3462a1c08442e31b321a48f2ac771137568d648a2d5423ce038b708b4b6607df", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "3462a1c08442e31b321a48f2ac771137568d648a2d5423ce038b708b4b6607df", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "3462a1c08442e31b321a48f2ac771137568d648a2d5423ce038b708b4b6607df", kill_on_drop: false }` [INFO] [stdout] 3462a1c08442e31b321a48f2ac771137568d648a2d5423ce038b708b4b6607df [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 063e1312c01c44b7c66285c35e416fad83aad87949583b372e964585cf7ed185 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "063e1312c01c44b7c66285c35e416fad83aad87949583b372e964585cf7ed185", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling autocfg v1.0.1 [INFO] [stderr] Compiling libc v0.2.95 [INFO] [stderr] Checking cfg-if v1.0.0 [INFO] [stderr] Checking scopeguard v1.1.0 [INFO] [stderr] Compiling autocfg v0.1.7 [INFO] [stderr] Checking byteorder v1.4.3 [INFO] [stderr] Compiling semver-parser v0.7.0 [INFO] [stderr] Compiling pkg-config v0.3.19 [INFO] [stderr] Compiling proc-macro2 v0.4.30 [INFO] [stderr] Checking adler32 v1.2.0 [INFO] [stderr] Compiling bitflags v1.2.1 [INFO] [stderr] Compiling crc32fast v1.2.1 [INFO] [stderr] Compiling unicode-xid v0.1.0 [INFO] [stderr] Checking either v1.6.1 [INFO] [stderr] Checking cfg-if v0.1.10 [INFO] [stderr] Checking adler v1.0.2 [INFO] [stderr] Checking weezl v0.1.5 [INFO] [stderr] Checking color_quant v1.1.0 [INFO] [stderr] Checking once_cell v1.8.0 [INFO] [stderr] Checking untrusted v0.7.1 [INFO] [stderr] Checking rawpointer v0.2.1 [INFO] [stderr] Checking spin v0.5.2 [INFO] [stderr] Checking bytemuck v1.5.1 [INFO] [stderr] Checking scoped_threadpool v0.1.9 [INFO] [stderr] Checking rand_core v0.3.1 [INFO] [stderr] Checking rand_jitter v0.1.4 [INFO] [stderr] Checking lock_api v0.3.4 [INFO] [stderr] Checking miniz_oxide v0.3.7 [INFO] [stderr] Checking matrixmultiply v0.3.1 [INFO] [stderr] Compiling semver v0.9.0 [INFO] [stderr] Checking crossbeam-utils v0.8.5 [INFO] [stderr] Checking deflate v0.8.6 [INFO] [stderr] Checking mnist v0.4.1 [INFO] [stderr] Checking rand_xorshift v0.1.1 [INFO] [stderr] Checking rand_hc v0.1.0 [INFO] [stderr] Checking rand_isaac v0.1.1 [INFO] [stderr] Checking gif v0.11.2 [INFO] [stderr] Compiling rustc_version v0.2.3 [INFO] [stderr] Compiling rand_chacha v0.1.1 [INFO] [stderr] Compiling rand_pcg v0.1.2 [INFO] [stderr] Compiling rand v0.6.5 [INFO] [stderr] Compiling num-traits v0.2.14 [INFO] [stderr] Compiling num-integer v0.1.44 [INFO] [stderr] Compiling memoffset v0.6.4 [INFO] [stderr] Compiling num-iter v0.1.42 [INFO] [stderr] Compiling rayon v1.5.1 [INFO] [stderr] Compiling miniz_oxide v0.4.4 [INFO] [stderr] Compiling indexmap v1.7.0 [INFO] [stderr] Compiling num-rational v0.3.2 [INFO] [stderr] Checking crossbeam-channel v0.5.1 [INFO] [stderr] Checking png v0.16.8 [INFO] [stderr] Compiling bzip2-sys v0.1.11+1.0.8 [INFO] [stderr] Compiling savefile v0.8.1 [INFO] [stderr] Compiling quote v0.6.13 [INFO] [stderr] Checking crossbeam-epoch v0.9.5 [INFO] [stderr] Checking num_cpus v1.13.0 [INFO] [stderr] Checking rand v0.4.6 [INFO] [stderr] Checking getrandom v0.1.16 [INFO] [stderr] Checking parking_lot_core v0.7.2 [INFO] [stderr] Checking rand_os v0.1.3 [INFO] [stderr] Checking ring v0.16.20 [INFO] [stderr] Checking time v0.1.44 [INFO] [stderr] Compiling syn v0.14.9 [INFO] [stderr] Checking rand_core v0.5.1 [INFO] [stderr] Checking crossbeam-deque v0.8.0 [INFO] [stderr] Checking parking_lot v0.10.2 [INFO] [stderr] Checking rand_chacha v0.2.2 [INFO] [stderr] Checking rayon-core v1.9.1 [INFO] [stderr] Checking rand v0.3.23 [INFO] [stderr] Checking rand v0.7.3 [INFO] [stderr] Checking num-complex v0.1.43 [INFO] [stderr] Checking num-complex v0.4.0 [INFO] [stderr] Checking bzip2 v0.3.3 [INFO] [stderr] Checking num-bigint v0.1.44 [INFO] [stderr] Checking ndarray v0.15.3 [INFO] [stderr] Checking num-rational v0.1.42 [INFO] [stderr] Checking num v0.1.42 [INFO] [stderr] Checking mindtree_utils v0.4.0 [INFO] [stderr] Compiling savefile-derive v0.8.1 [INFO] [stderr] Checking jpeg-decoder v0.1.22 [INFO] [stderr] Checking tiff v0.6.1 [INFO] [stderr] Checking image v0.23.14 [INFO] [stderr] Checking imagerecognizer v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `std::collections::hash_map::DefaultHasher` [INFO] [stdout] --> src/network.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | use std::collections::hash_map::DefaultHasher; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::ptr::hash` [INFO] [stdout] --> src/network.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | use std::ptr::hash; [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `BigEndian`, `ReadBytesExt` [INFO] [stdout] --> src/io.rs:8:17 [INFO] [stdout] | [INFO] [stdout] 8 | use byteorder::{BigEndian, ReadBytesExt}; [INFO] [stdout] | ^^^^^^^^^ ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::convert::TryInto` [INFO] [stdout] --> src/io.rs:9:5 [INFO] [stdout] | [INFO] [stdout] 9 | use std::convert::TryInto; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `max_ele` [INFO] [stdout] --> src/network.rs:437:13 [INFO] [stdout] | [INFO] [stdout] 437 | let mut max_ele: f64; [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_max_ele` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `n` [INFO] [stdout] --> src/network.rs:40:17 [INFO] [stdout] | [INFO] [stdout] 40 | let mut n = 0; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_n` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> src/network.rs:44:17 [INFO] [stdout] | [INFO] [stdout] 44 | for i in 0..*size { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> src/network.rs:71:17 [INFO] [stdout] | [INFO] [stdout] 71 | for i in 0..*x { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `j` [INFO] [stdout] --> src/network.rs:73:21 [INFO] [stdout] | [INFO] [stdout] 73 | for j in 0..*y { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_j` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `n` [INFO] [stdout] --> src/network.rs:97:13 [INFO] [stdout] | [INFO] [stdout] 97 | let n = training_data.len(); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_n` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> src/network.rs:112:17 [INFO] [stdout] | [INFO] [stdout] 112 | for i in 0..*mini_batch_size { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `vec_width` [INFO] [stdout] --> src/io.rs:112:9 [INFO] [stdout] | [INFO] [stdout] 112 | let vec_width = input.len() / image_len; [INFO] [stdout] | ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_vec_width` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/network.rs:40:13 [INFO] [stdout] | [INFO] [stdout] 40 | let mut n = 0; [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/network.rs:90:9 [INFO] [stdout] | [INFO] [stdout] 90 | mut training_data: &Vec>>, [INFO] [stdout] | ----^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::collections::hash_map::DefaultHasher` [INFO] [stdout] --> src/network.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | use std::collections::hash_map::DefaultHasher; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::ptr::hash` [INFO] [stdout] --> src/network.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | use std::ptr::hash; [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `BigEndian`, `ReadBytesExt` [INFO] [stdout] --> src/io.rs:8:17 [INFO] [stdout] | [INFO] [stdout] 8 | use byteorder::{BigEndian, ReadBytesExt}; [INFO] [stdout] | ^^^^^^^^^ ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::convert::TryInto` [INFO] [stdout] --> src/io.rs:9:5 [INFO] [stdout] | [INFO] [stdout] 9 | use std::convert::TryInto; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/network.rs:441:13 [INFO] [stdout] | [INFO] [stdout] 441 | let mut next: usize; [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/io.rs:113:9 [INFO] [stdout] | [INFO] [stdout] 113 | let mut target_vec: Vec> = input.chunks(image_len) [INFO] [stdout] | ----^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `check_option` [INFO] [stdout] --> src/network.rs:354:4 [INFO] [stdout] | [INFO] [stdout] 354 | fn check_option(o: Option<&f64>) -> f64{ [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `subtract_vec` [INFO] [stdout] --> src/network.rs:418:4 [INFO] [stdout] | [INFO] [stdout] 418 | fn subtract_vec(a: &Vec, b: &Vec) -> Vec { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `sig` [INFO] [stdout] --> src/network.rs:468:4 [INFO] [stdout] | [INFO] [stdout] 468 | fn sig(x: f64) -> f64 { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `train_array_2d` [INFO] [stdout] --> src/io.rs:41:5 [INFO] [stdout] | [INFO] [stdout] 41 | train_array_2d: Vec>, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `train_label` [INFO] [stdout] --> src/io.rs:42:5 [INFO] [stdout] | [INFO] [stdout] 42 | train_label: Vec, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `validation_array_2d` [INFO] [stdout] --> src/io.rs:44:5 [INFO] [stdout] | [INFO] [stdout] 44 | validation_array_2d: Vec>, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `validation_label` [INFO] [stdout] --> src/io.rs:45:5 [INFO] [stdout] | [INFO] [stdout] 45 | validation_label: Vec, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `test_array_2d` [INFO] [stdout] --> src/io.rs:47:5 [INFO] [stdout] | [INFO] [stdout] 47 | test_array_2d: Vec>, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `test_label` [INFO] [stdout] --> src/io.rs:48:5 [INFO] [stdout] | [INFO] [stdout] 48 | test_label: Vec, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `pack_images` [INFO] [stdout] --> src/io.rs:90:4 [INFO] [stdout] | [INFO] [stdout] 90 | fn pack_images(input_vector: Vec, rows: u8, cols: u8) -> Array2 { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 26 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `max_ele` [INFO] [stdout] --> src/network.rs:437:13 [INFO] [stdout] | [INFO] [stdout] 437 | let mut max_ele: f64; [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_max_ele` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `n` [INFO] [stdout] --> src/network.rs:40:17 [INFO] [stdout] | [INFO] [stdout] 40 | let mut n = 0; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_n` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> src/network.rs:44:17 [INFO] [stdout] | [INFO] [stdout] 44 | for i in 0..*size { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> src/network.rs:71:17 [INFO] [stdout] | [INFO] [stdout] 71 | for i in 0..*x { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `j` [INFO] [stdout] --> src/network.rs:73:21 [INFO] [stdout] | [INFO] [stdout] 73 | for j in 0..*y { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_j` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `n` [INFO] [stdout] --> src/network.rs:97:13 [INFO] [stdout] | [INFO] [stdout] 97 | let n = training_data.len(); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_n` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> src/network.rs:112:17 [INFO] [stdout] | [INFO] [stdout] 112 | for i in 0..*mini_batch_size { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `vec_width` [INFO] [stdout] --> src/io.rs:112:9 [INFO] [stdout] | [INFO] [stdout] 112 | let vec_width = input.len() / image_len; [INFO] [stdout] | ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_vec_width` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/network.rs:40:13 [INFO] [stdout] | [INFO] [stdout] 40 | let mut n = 0; [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/network.rs:90:9 [INFO] [stdout] | [INFO] [stdout] 90 | mut training_data: &Vec>>, [INFO] [stdout] | ----^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/network.rs:441:13 [INFO] [stdout] | [INFO] [stdout] 441 | let mut next: usize; [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/io.rs:113:9 [INFO] [stdout] | [INFO] [stdout] 113 | let mut target_vec: Vec> = input.chunks(image_len) [INFO] [stdout] | ----^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `check_option` [INFO] [stdout] --> src/network.rs:354:4 [INFO] [stdout] | [INFO] [stdout] 354 | fn check_option(o: Option<&f64>) -> f64{ [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `subtract_vec` [INFO] [stdout] --> src/network.rs:418:4 [INFO] [stdout] | [INFO] [stdout] 418 | fn subtract_vec(a: &Vec, b: &Vec) -> Vec { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `sig` [INFO] [stdout] --> src/network.rs:468:4 [INFO] [stdout] | [INFO] [stdout] 468 | fn sig(x: f64) -> f64 { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `train_array_2d` [INFO] [stdout] --> src/io.rs:41:5 [INFO] [stdout] | [INFO] [stdout] 41 | train_array_2d: Vec>, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `train_label` [INFO] [stdout] --> src/io.rs:42:5 [INFO] [stdout] | [INFO] [stdout] 42 | train_label: Vec, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `validation_array_2d` [INFO] [stdout] --> src/io.rs:44:5 [INFO] [stdout] | [INFO] [stdout] 44 | validation_array_2d: Vec>, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `validation_label` [INFO] [stdout] --> src/io.rs:45:5 [INFO] [stdout] | [INFO] [stdout] 45 | validation_label: Vec, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `test_array_2d` [INFO] [stdout] --> src/io.rs:47:5 [INFO] [stdout] | [INFO] [stdout] 47 | test_array_2d: Vec>, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `test_label` [INFO] [stdout] --> src/io.rs:48:5 [INFO] [stdout] | [INFO] [stdout] 48 | test_label: Vec, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `pack_images` [INFO] [stdout] --> src/io.rs:90:4 [INFO] [stdout] | [INFO] [stdout] 90 | fn pack_images(input_vector: Vec, rows: u8, cols: u8) -> Array2 { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 26 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 1m 09s [INFO] running `Command { std: "docker" "inspect" "063e1312c01c44b7c66285c35e416fad83aad87949583b372e964585cf7ed185", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "063e1312c01c44b7c66285c35e416fad83aad87949583b372e964585cf7ed185", kill_on_drop: false }` [INFO] [stdout] 063e1312c01c44b7c66285c35e416fad83aad87949583b372e964585cf7ed185