[INFO] cloning repository https://github.com/chrisculver/mnist_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/chrisculver/mnist_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchrisculver%2Fmnist_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchrisculver%2Fmnist_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7194e677f1c3b8028c1cc9d60270ca4901378222
[INFO] testing chrisculver/mnist_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%2Fchrisculver%2Fmnist_rust" "/workspace/builds/worker-21/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-21/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/chrisculver/mnist_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/chrisculver/mnist_rust
[INFO] finished tweaking git repo https://github.com/chrisculver/mnist_rust
[INFO] tweaked toml for git repo https://github.com/chrisculver/mnist_rust written to /workspace/builds/worker-21/source/Cargo.toml
[INFO] crate git repo https://github.com/chrisculver/mnist_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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 17ab941dcad0f0e24b8a27c0f00850a799da4d3a99adc72abab9fcce34d8d5ad
[INFO] running `Command { std: "docker" "start" "-a" "17ab941dcad0f0e24b8a27c0f00850a799da4d3a99adc72abab9fcce34d8d5ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "17ab941dcad0f0e24b8a27c0f00850a799da4d3a99adc72abab9fcce34d8d5ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "17ab941dcad0f0e24b8a27c0f00850a799da4d3a99adc72abab9fcce34d8d5ad", kill_on_drop: false }`
[INFO] [stdout] 17ab941dcad0f0e24b8a27c0f00850a799da4d3a99adc72abab9fcce34d8d5ad
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2995769ee5f1699a26e7498c8bf006af24181adcb46c186970c78e6aaa66f4e3
[INFO] running `Command { std: "docker" "start" "-a" "2995769ee5f1699a26e7498c8bf006af24181adcb46c186970c78e6aaa66f4e3", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.108
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling libm v0.2.1
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling ppv-lite86 v0.2.15
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling rand_distr v0.4.2
[INFO] [stderr]    Compiling mnist_by_hand v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::neural_net`
[INFO] [stdout]  --> src/neural_net/matrix.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::neural_net;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops`
[INFO] [stdout]  --> src/neural_net/matrix.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::ops;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `nr`
[INFO] [stdout]   --> src/neural_net/matrix.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     nr: usize,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `nc`
[INFO] [stdout]   --> src/neural_net/matrix.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     nc: usize,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/neural_net/matrix.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 15 |     pub fn new(nr: usize, nc: usize) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `shape`
[INFO] [stdout]   --> src/neural_net/matrix.rs:31:12
[INFO] [stdout]    |
[INFO] [stdout] 31 |     pub fn shape(&self) -> (usize, usize) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `times`
[INFO] [stdout]   --> src/neural_net/matrix.rs:35:12
[INFO] [stdout]    |
[INFO] [stdout] 35 |     pub fn times(&self, v: &Vector) -> Vector {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Network`
[INFO] [stdout]   --> src/neural_net/neural_net.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | struct Network {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/neural_net/neural_net.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn new(sizes: Vec<usize>) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `feedforward`
[INFO] [stdout]   --> src/neural_net/neural_net.rs:47:8
[INFO] [stdout]    |
[INFO] [stdout] 47 |     fn feedforward(&self, a: Vector) -> Vector {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 33.77s
[INFO] running `Command { std: "docker" "inspect" "2995769ee5f1699a26e7498c8bf006af24181adcb46c186970c78e6aaa66f4e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2995769ee5f1699a26e7498c8bf006af24181adcb46c186970c78e6aaa66f4e3", kill_on_drop: false }`
[INFO] [stdout] 2995769ee5f1699a26e7498c8bf006af24181adcb46c186970c78e6aaa66f4e3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 165d44ba60a8197ba3a16b9c33d4fc139519cd0617bc4a13b6bb3cb09899b38f
[INFO] running `Command { std: "docker" "start" "-a" "165d44ba60a8197ba3a16b9c33d4fc139519cd0617bc4a13b6bb3cb09899b38f", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling mnist_by_hand v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::neural_net`
[INFO] [stdout]  --> src/neural_net/matrix.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::neural_net;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops`
[INFO] [stdout]  --> src/neural_net/matrix.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::ops;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `sizes`
[INFO] [stdout]   --> src/neural_net/neural_net.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 |     sizes: Vec<usize>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.13s
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/mnist_by_hand-ce0ea2f6f1d32e65)
[INFO] running `Command { std: "docker" "inspect" "165d44ba60a8197ba3a16b9c33d4fc139519cd0617bc4a13b6bb3cb09899b38f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "165d44ba60a8197ba3a16b9c33d4fc139519cd0617bc4a13b6bb3cb09899b38f", kill_on_drop: false }`
[INFO] [stdout] 165d44ba60a8197ba3a16b9c33d4fc139519cd0617bc4a13b6bb3cb09899b38f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] c8a72fcaa4abff770cd4a1b0450c1b3550c88b0148ab612ab2c6bef46c30dc4e
[INFO] running `Command { std: "docker" "start" "-a" "c8a72fcaa4abff770cd4a1b0450c1b3550c88b0148ab612ab2c6bef46c30dc4e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: unused import: `crate::neural_net`
[INFO] [stderr]  --> src/neural_net/matrix.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use crate::neural_net;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::ops`
[INFO] [stderr]  --> src/neural_net/matrix.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::ops;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `sizes`
[INFO] [stderr]   --> src/neural_net/neural_net.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 |     sizes: Vec<usize>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `mnist_by_hand` (bin "mnist_by_hand" test) generated 3 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 3.63s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/mnist_by_hand-ce0ea2f6f1d32e65)
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test neural_net::matrix::tests::dot_test ... ok
[INFO] [stdout] test neural_net::neural_net::tests::some_sigmoid_values ... ok
[INFO] [stdout] test neural_net::matrix::tests::index_tests ... ok
[INFO] [stdout] test neural_net::matrix::tests::shape_tests ... ok
[INFO] [stdout] test neural_net::neural_net::tests::test_network_size ... ok
[INFO] [stdout] test neural_net::neural_net::tests::test_minimal_network ... ok
[INFO] [stdout] test neural_net::vector::tests::index_tests ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "c8a72fcaa4abff770cd4a1b0450c1b3550c88b0148ab612ab2c6bef46c30dc4e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c8a72fcaa4abff770cd4a1b0450c1b3550c88b0148ab612ab2c6bef46c30dc4e", kill_on_drop: false }`
[INFO] [stdout] c8a72fcaa4abff770cd4a1b0450c1b3550c88b0148ab612ab2c6bef46c30dc4e