[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] testing wolfandreh/mnist-digit-recognition-in-rust against beta-2022-04-10 for beta-1.61-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwolfandreh%2Fmnist-digit-recognition-in-rust" "/workspace/builds/worker-14/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/wolfandreh/mnist-digit-recognition-in-rust on toolchain beta-2022-04-10 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "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-14/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" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] f74657e52a0f378183f493bbaf7b32c13a230b282c1ab6a557d8a01e9167f874 [INFO] running `Command { std: "docker" "start" "-a" "f74657e52a0f378183f493bbaf7b32c13a230b282c1ab6a557d8a01e9167f874", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "f74657e52a0f378183f493bbaf7b32c13a230b282c1ab6a557d8a01e9167f874", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f74657e52a0f378183f493bbaf7b32c13a230b282c1ab6a557d8a01e9167f874", kill_on_drop: false }` [INFO] [stdout] f74657e52a0f378183f493bbaf7b32c13a230b282c1ab6a557d8a01e9167f874 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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=warn" "-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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 966bc94a14b37e0b3a6ec824a522ced11d18f775c3e75acf086bed99fcbc6bd1 [INFO] running `Command { std: "docker" "start" "-a" "966bc94a14b37e0b3a6ec824a522ced11d18f775c3e75acf086bed99fcbc6bd1", kill_on_drop: false }` [INFO] [stderr] Compiling rustc-serialize v0.3.24 [INFO] [stderr] Compiling bit-vec v0.6.3 [INFO] [stderr] Compiling bytemuck v1.5.1 [INFO] [stderr] Compiling indexmap v1.7.0 [INFO] [stderr] Compiling bzip2-sys v0.1.11+1.0.8 [INFO] [stderr] Compiling ring v0.16.20 [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 mnist v0.4.1 [INFO] [stderr] Compiling matrixmultiply v0.3.1 [INFO] [stderr] Compiling rand_isaac v0.1.1 [INFO] [stderr] Compiling rand_hc v0.1.0 [INFO] [stderr] Compiling rand_xorshift v0.1.1 [INFO] [stderr] Compiling rand v0.4.6 [INFO] [stderr] Compiling parking_lot_core v0.7.2 [INFO] [stderr] Compiling rand_os v0.1.3 [INFO] [stderr] Compiling time v0.1.44 [INFO] [stderr] Compiling quote v0.6.13 [INFO] [stderr] Compiling savefile v0.8.1 [INFO] [stderr] Compiling num-integer v0.1.44 [INFO] [stderr] Compiling parking_lot v0.10.2 [INFO] [stderr] Compiling syn v0.14.9 [INFO] [stderr] Compiling rayon-core v1.9.1 [INFO] [stderr] Compiling rand v0.3.23 [INFO] [stderr] Compiling num-iter v0.1.42 [INFO] [stderr] Compiling num-rational v0.3.2 [INFO] [stderr] Compiling ndarray v0.15.3 [INFO] [stderr] Compiling rayon v1.5.1 [INFO] [stderr] Compiling bzip2 v0.3.3 [INFO] [stderr] Compiling num-bigint v0.1.44 [INFO] [stderr] Compiling num-complex v0.1.43 [INFO] [stderr] Compiling savefile-derive v0.8.1 [INFO] [stderr] Compiling num-rational v0.1.42 [INFO] [stderr] Compiling num v0.1.42 [INFO] [stderr] Compiling mindtree_utils v0.4.0 [INFO] [stderr] Compiling jpeg-decoder v0.1.22 [INFO] [stderr] Compiling tiff v0.6.1 [INFO] [stderr] Compiling image v0.23.14 [INFO] [stderr] Compiling 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: 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 18s [INFO] running `Command { std: "docker" "inspect" "966bc94a14b37e0b3a6ec824a522ced11d18f775c3e75acf086bed99fcbc6bd1", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "966bc94a14b37e0b3a6ec824a522ced11d18f775c3e75acf086bed99fcbc6bd1", kill_on_drop: false }` [INFO] [stdout] 966bc94a14b37e0b3a6ec824a522ced11d18f775c3e75acf086bed99fcbc6bd1 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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=warn" "-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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 4f73e6dc7fc17150990b947eb9af7393e6e96194db57e4906395c2b8cb1c6cef [INFO] running `Command { std: "docker" "start" "-a" "4f73e6dc7fc17150990b947eb9af7393e6e96194db57e4906395c2b8cb1c6cef", kill_on_drop: false }` [INFO] [stderr] Compiling 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: 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 test [unoptimized + debuginfo] target(s) in 1.40s [INFO] [stderr] Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/imagerecognizer-c0ac3a53861795bc) [INFO] running `Command { std: "docker" "inspect" "4f73e6dc7fc17150990b947eb9af7393e6e96194db57e4906395c2b8cb1c6cef", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4f73e6dc7fc17150990b947eb9af7393e6e96194db57e4906395c2b8cb1c6cef", kill_on_drop: false }` [INFO] [stdout] 4f73e6dc7fc17150990b947eb9af7393e6e96194db57e4906395c2b8cb1c6cef [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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=warn" "-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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 537f4d482fd767d859db5317e0c691ab0919cfef5c4b5368503e56d33145621c [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" "537f4d482fd767d859db5317e0c691ab0919cfef5c4b5368503e56d33145621c", kill_on_drop: false }` [INFO] [stderr] warning: unused import: `std::collections::hash_map::DefaultHasher` [INFO] [stderr] --> src/network.rs:3:5 [INFO] [stderr] | [INFO] [stderr] 3 | use std::collections::hash_map::DefaultHasher; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::ptr::hash` [INFO] [stderr] --> src/network.rs:4:5 [INFO] [stderr] | [INFO] [stderr] 4 | use std::ptr::hash; [INFO] [stderr] | ^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused imports: `BigEndian`, `ReadBytesExt` [INFO] [stderr] --> src/io.rs:8:17 [INFO] [stderr] | [INFO] [stderr] 8 | use byteorder::{BigEndian, ReadBytesExt}; [INFO] [stderr] | ^^^^^^^^^ ^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::convert::TryInto` [INFO] [stderr] --> src/io.rs:9:5 [INFO] [stderr] | [INFO] [stderr] 9 | use std::convert::TryInto; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused variable: `max_ele` [INFO] [stderr] --> src/network.rs:437:13 [INFO] [stderr] | [INFO] [stderr] 437 | let mut max_ele: f64; [INFO] [stderr] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_max_ele` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `n` [INFO] [stderr] --> src/network.rs:40:17 [INFO] [stderr] | [INFO] [stderr] 40 | let mut n = 0; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_n` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `i` [INFO] [stderr] --> src/network.rs:44:17 [INFO] [stderr] | [INFO] [stderr] 44 | for i in 0..*size { [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `i` [INFO] [stderr] --> src/network.rs:71:17 [INFO] [stderr] | [INFO] [stderr] 71 | for i in 0..*x { [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `j` [INFO] [stderr] --> src/network.rs:73:21 [INFO] [stderr] | [INFO] [stderr] 73 | for j in 0..*y { [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_j` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `n` [INFO] [stderr] --> src/network.rs:97:13 [INFO] [stderr] | [INFO] [stderr] 97 | let n = training_data.len(); [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_n` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `i` [INFO] [stderr] --> src/network.rs:112:17 [INFO] [stderr] | [INFO] [stderr] 112 | for i in 0..*mini_batch_size { [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `vec_width` [INFO] [stderr] --> src/io.rs:112:9 [INFO] [stderr] | [INFO] [stderr] 112 | let vec_width = input.len() / image_len; [INFO] [stderr] | ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_vec_width` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/network.rs:40:13 [INFO] [stderr] | [INFO] [stderr] 40 | let mut n = 0; [INFO] [stderr] | ----^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/network.rs:90:9 [INFO] [stderr] | [INFO] [stderr] 90 | mut training_data: &Vec>>, [INFO] [stderr] | ----^^^^^^^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/network.rs:441:13 [INFO] [stderr] | [INFO] [stderr] 441 | let mut next: usize; [INFO] [stderr] | ----^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/io.rs:113:9 [INFO] [stderr] | [INFO] [stderr] 113 | let mut target_vec: Vec> = input.chunks(image_len) [INFO] [stderr] | ----^^^^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: function is never used: `check_option` [INFO] [stderr] --> src/network.rs:354:4 [INFO] [stderr] | [INFO] [stderr] 354 | fn check_option(o: Option<&f64>) -> f64{ [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: function is never used: `subtract_vec` [INFO] [stderr] --> src/network.rs:418:4 [INFO] [stderr] | [INFO] [stderr] 418 | fn subtract_vec(a: &Vec, b: &Vec) -> Vec { [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `sig` [INFO] [stderr] --> src/network.rs:468:4 [INFO] [stderr] | [INFO] [stderr] 468 | fn sig(x: f64) -> f64 { [INFO] [stderr] | ^^^ [INFO] [stderr] [INFO] [stderr] warning: field is never read: `train_array_2d` [INFO] [stderr] --> src/io.rs:41:5 [INFO] [stderr] | [INFO] [stderr] 41 | train_array_2d: Vec>, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: field is never read: `train_label` [INFO] [stderr] --> src/io.rs:42:5 [INFO] [stderr] | [INFO] [stderr] 42 | train_label: Vec, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: field is never read: `validation_array_2d` [INFO] [stderr] --> src/io.rs:44:5 [INFO] [stderr] | [INFO] [stderr] 44 | validation_array_2d: Vec>, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: field is never read: `validation_label` [INFO] [stderr] --> src/io.rs:45:5 [INFO] [stderr] | [INFO] [stderr] 45 | validation_label: Vec, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: field is never read: `test_array_2d` [INFO] [stderr] --> src/io.rs:47:5 [INFO] [stderr] | [INFO] [stderr] 47 | test_array_2d: Vec>, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: field is never read: `test_label` [INFO] [stderr] --> src/io.rs:48:5 [INFO] [stderr] | [INFO] [stderr] 48 | test_label: Vec, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `pack_images` [INFO] [stderr] --> src/io.rs:90:4 [INFO] [stderr] | [INFO] [stderr] 90 | fn pack_images(input_vector: Vec, rows: u8, cols: u8) -> Array2 { [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: `imagerecognizer` (bin "imagerecognizer" test) generated 26 warnings [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.12s [INFO] [stderr] Running unittests src/main.rs (/opt/rustwide/target/debug/deps/imagerecognizer-c0ac3a53861795bc) [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" "537f4d482fd767d859db5317e0c691ab0919cfef5c4b5368503e56d33145621c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "537f4d482fd767d859db5317e0c691ab0919cfef5c4b5368503e56d33145621c", kill_on_drop: false }` [INFO] [stdout] 537f4d482fd767d859db5317e0c691ab0919cfef5c4b5368503e56d33145621c