[INFO] cloning repository https://github.com/SimonWang9610/cnn
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/SimonWang9610/cnn" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSimonWang9610%2Fcnn", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSimonWang9610%2Fcnn'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2a052e0f09857f18620fce9e52887a3d7dd940bd
[INFO] checking SimonWang9610/cnn against try#ddfd70ee3c3748e597b32f416b0d15a4f6e37685 for pr-87050
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSimonWang9610%2Fcnn" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/SimonWang9610/cnn on toolchain ddfd70ee3c3748e597b32f416b0d15a4f6e37685
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/SimonWang9610/cnn
[INFO] finished tweaking git repo https://github.com/SimonWang9610/cnn
[INFO] tweaked toml for git repo https://github.com/SimonWang9610/cnn written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/SimonWang9610/cnn already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "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 syn v1.0.55
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dcf04335083c488d944d48117f74d593489040c6694a7c7c84f51e9439d49d4f
[INFO] running `Command { std: "docker" "start" "-a" "dcf04335083c488d944d48117f74d593489040c6694a7c7c84f51e9439d49d4f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dcf04335083c488d944d48117f74d593489040c6694a7c7c84f51e9439d49d4f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dcf04335083c488d944d48117f74d593489040c6694a7c7c84f51e9439d49d4f", kill_on_drop: false }`
[INFO] [stdout] dcf04335083c488d944d48117f74d593489040c6694a7c7c84f51e9439d49d4f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bbfe228a7ef417c0b6b5e8a05857e9d7d9cc6625372a9ef1201cdce026d63571
[INFO] running `Command { std: "docker" "start" "-a" "bbfe228a7ef417c0b6b5e8a05857e9d7d9cc6625372a9ef1201cdce026d63571", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.55
[INFO] [stderr]     Checking weezl v0.1.3
[INFO] [stderr]     Checking color_quant v1.1.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling crossbeam-utils v0.8.1
[INFO] [stderr]    Compiling memoffset v0.6.1
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling rayon v1.5.0
[INFO] [stderr]    Compiling miniz_oxide v0.4.3
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]     Checking matrixmultiply v0.2.4
[INFO] [stderr]     Checking getrandom v0.1.15
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking png v0.16.8
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand_pcg v0.2.1
[INFO] [stderr]     Checking gif v0.11.1
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking crossbeam-epoch v0.9.1
[INFO] [stderr]     Checking crossbeam-channel v0.5.0
[INFO] [stderr]     Checking crossbeam-deque v0.8.0
[INFO] [stderr]     Checking rand_distr v0.2.2
[INFO] [stderr]     Checking rayon-core v1.9.0
[INFO] [stderr]     Checking ndarray v0.13.1
[INFO] [stderr]    Compiling serde_derive v1.0.118
[INFO] [stderr]     Checking jpeg-decoder v0.1.20
[INFO] [stderr]     Checking tiff v0.6.1
[INFO] [stderr]     Checking ndarray-rand v0.11.0
[INFO] [stderr]     Checking testfunc v0.1.0 (/opt/rustwide/workdir/testfunc)
[INFO] [stdout] warning: unused import: `std::vec::Vec`
[INFO] [stdout]  --> testfunc/src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::vec::Vec;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> testfunc/src/main.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let b = Array::from_shape_vec((1, 1), vec![a]).unwrap();
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::vec::Vec`
[INFO] [stdout]  --> testfunc/src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::vec::Vec;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> testfunc/src/main.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let b = Array::from_shape_vec((1, 1), vec![a]).unwrap();
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking image v0.23.12
[INFO] [stderr]     Checking serde v1.0.118
[INFO] [stderr]     Checking serde_json v1.0.60
[INFO] [stderr]     Checking utils v0.1.0 (/opt/rustwide/workdir/utils)
[INFO] [stdout] warning: unused import: `ndarray::Array2`
[INFO] [stdout]  --> utils/src/lib.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use ndarray::Array2;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Deserializer`
[INFO] [stdout]   --> utils/src/network/mod.rs:13:37
[INFO] [stdout]    |
[INFO] [stdout] 13 | use serde::{Serialize, Deserialize, Deserializer};
[INFO] [stdout]    |                                     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `File`
[INFO] [stdout]   --> utils/src/network/mod.rs:15:15
[INFO] [stdout]    |
[INFO] [stdout] 15 | use std::fs::{File, OpenOptions};
[INFO] [stdout]    |               ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Read`
[INFO] [stdout]   --> utils/src/network/mod.rs:16:15
[INFO] [stdout]    |
[INFO] [stdout] 16 | use std::io::{Read, Write};
[INFO] [stdout]    |               ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `nn` should have an upper camel case name
[INFO] [stdout]   --> utils/src/network/mod.rs:34:10
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub enum nn {
[INFO] [stdout]    |          ^^ help: convert the identifier to upper camel case: `Nn`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serde_json`
[INFO] [stdout]  --> utils/src/trained/mod.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use serde_json;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ndarray::Array2`
[INFO] [stdout]  --> utils/src/lib.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use ndarray::Array2;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Deserializer`
[INFO] [stdout]   --> utils/src/network/mod.rs:13:37
[INFO] [stdout]    |
[INFO] [stdout] 13 | use serde::{Serialize, Deserialize, Deserializer};
[INFO] [stdout]    |                                     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `File`
[INFO] [stdout]   --> utils/src/network/mod.rs:15:15
[INFO] [stdout]    |
[INFO] [stdout] 15 | use std::fs::{File, OpenOptions};
[INFO] [stdout]    |               ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Read`
[INFO] [stdout]   --> utils/src/network/mod.rs:16:15
[INFO] [stdout]    |
[INFO] [stdout] 16 | use std::io::{Read, Write};
[INFO] [stdout]    |               ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `nn` should have an upper camel case name
[INFO] [stdout]   --> utils/src/network/mod.rs:34:10
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub enum nn {
[INFO] [stdout]    |          ^^ help: convert the identifier to upper camel case: `Nn`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serde_json`
[INFO] [stdout]  --> utils/src/trained/mod.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use serde_json;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `test_inputs`
[INFO] [stdout]    --> utils/src/network/mod.rs:191:5
[INFO] [stdout]     |
[INFO] [stdout] 191 |     test_inputs: Vec<Vec<Array2<f32>>>,
[INFO] [stdout]     |     ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_test_inputs`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `test_target`
[INFO] [stdout]    --> utils/src/network/mod.rs:193:5
[INFO] [stdout]     |
[INFO] [stdout] 193 |     test_target: Array2<f32>
[INFO] [stdout]     |     ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_test_target`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `test_inputs`
[INFO] [stdout]    --> utils/src/network/mod.rs:191:5
[INFO] [stdout]     |
[INFO] [stdout] 191 |     test_inputs: Vec<Vec<Array2<f32>>>,
[INFO] [stdout]     |     ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_test_inputs`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `test_target`
[INFO] [stdout]    --> utils/src/network/mod.rs:193:5
[INFO] [stdout]     |
[INFO] [stdout] 193 |     test_target: Array2<f32>
[INFO] [stdout]     |     ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_test_target`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking network v0.1.0 (/opt/rustwide/workdir/network)
[INFO] [stdout] warning: unused import: `train`
[INFO] [stdout]  --> network/src/main.rs:6:26
[INFO] [stdout]   |
[INFO] [stdout] 6 | use utils::network::{nn, train, train_one_by_one};
[INFO] [stdout]   |                          ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x_train`
[INFO] [stdout]   --> network/src/main.rs:20:11
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let ((x_train, y_train), (x_test, y_test)) = load_mnist(paths);
[INFO] [stdout]    |           ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_x_train`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y_train`
[INFO] [stdout]   --> network/src/main.rs:20:20
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let ((x_train, y_train), (x_test, y_test)) = load_mnist(paths);
[INFO] [stdout]    |                    ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_y_train`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `train`
[INFO] [stdout]  --> network/src/main.rs:6:26
[INFO] [stdout]   |
[INFO] [stdout] 6 | use utils::network::{nn, train, train_one_by_one};
[INFO] [stdout]   |                          ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x_train`
[INFO] [stdout]   --> network/src/main.rs:20:11
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let ((x_train, y_train), (x_test, y_test)) = load_mnist(paths);
[INFO] [stdout]    |           ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_x_train`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y_train`
[INFO] [stdout]   --> network/src/main.rs:20:20
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let ((x_train, y_train), (x_test, y_test)) = load_mnist(paths);
[INFO] [stdout]    |                    ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_y_train`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 24.11s
[INFO] running `Command { std: "docker" "inspect" "bbfe228a7ef417c0b6b5e8a05857e9d7d9cc6625372a9ef1201cdce026d63571", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bbfe228a7ef417c0b6b5e8a05857e9d7d9cc6625372a9ef1201cdce026d63571", kill_on_drop: false }`
[INFO] [stdout] bbfe228a7ef417c0b6b5e8a05857e9d7d9cc6625372a9ef1201cdce026d63571