[INFO] cloning repository https://github.com/ptsouchlos/nn-and-dl
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ptsouchlos/nn-and-dl" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fptsouchlos%2Fnn-and-dl", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fptsouchlos%2Fnn-and-dl'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b9f7f3bd9e143a82546ec88bdec06e411f77ebb6
[INFO] testing ptsouchlos/nn-and-dl against beta-2026-03-05 for beta-1.95-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fptsouchlos%2Fnn-and-dl" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/ptsouchlos/nn-and-dl
[INFO] finished tweaking git repo https://github.com/ptsouchlos/nn-and-dl
[INFO] tweaked toml for git repo https://github.com/ptsouchlos/nn-and-dl written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ptsouchlos/nn-and-dl on toolchain beta-2026-03-05
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-03-05" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/ptsouchlos/nn-and-dl already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-03-05" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-03-05" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 48a5af55de4042e7fd1011a0af7d840322d7e52154c9624d4070037f07114e04
[INFO] running `Command { std: "docker" "start" "-a" "48a5af55de4042e7fd1011a0af7d840322d7e52154c9624d4070037f07114e04", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "48a5af55de4042e7fd1011a0af7d840322d7e52154c9624d4070037f07114e04", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "48a5af55de4042e7fd1011a0af7d840322d7e52154c9624d4070037f07114e04", kill_on_drop: false }`
[INFO] [stdout] 48a5af55de4042e7fd1011a0af7d840322d7e52154c9624d4070037f07114e04
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-03-05" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f3d2c50f84c49fcbf5d2c246532b0553262f6d90c8bf98b2459f821fc9b95e8f
[INFO] running `Command { std: "docker" "start" "-a" "f3d2c50f84c49fcbf5d2c246532b0553262f6d90c8bf98b2459f821fc9b95e8f", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.5.0
[INFO] [stderr]    Compiling libm v0.2.15
[INFO] [stderr]    Compiling libc v0.2.180
[INFO] [stderr]    Compiling zerocopy v0.8.33
[INFO] [stderr]    Compiling getrandom v0.3.4
[INFO] [stderr]    Compiling proc-macro2 v1.0.105
[INFO] [stderr]    Compiling quote v1.0.43
[INFO] [stderr]    Compiling bytemuck v1.24.0
[INFO] [stderr]    Compiling typenum v1.19.0
[INFO] [stderr]    Compiling safe_arch v0.7.4
[INFO] [stderr]    Compiling rawpointer v0.2.1
[INFO] [stderr]    Compiling anyhow v1.0.100
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling matrixmultiply v0.3.10
[INFO] [stderr]    Compiling wide v0.7.33
[INFO] [stderr]    Compiling syn v2.0.114
[INFO] [stderr]    Compiling rand_core v0.9.5
[INFO] [stderr]    Compiling ppv-lite86 v0.2.21
[INFO] [stderr]    Compiling approx v0.5.1
[INFO] [stderr]    Compiling num-complex v0.4.6
[INFO] [stderr]    Compiling num-integer v0.1.46
[INFO] [stderr]    Compiling num-rational v0.4.2
[INFO] [stderr]    Compiling rand_chacha v0.9.0
[INFO] [stderr]    Compiling rand v0.9.2
[INFO] [stderr]    Compiling simba v0.9.1
[INFO] [stderr]    Compiling rand_distr v0.5.1
[INFO] [stderr]    Compiling nalgebra-macros v0.3.0
[INFO] [stderr]    Compiling nalgebra v0.34.1
[INFO] [stderr]    Compiling nn-and-dl v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `BufReader`
[INFO] [stdout]  --> src/mnist_loader.rs:3:10
[INFO] [stdout]   |
[INFO] [stdout] 3 |     io::{BufReader, Read},
[INFO] [stdout]   |          ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::types::DataVector`
[INFO] [stdout]   --> src/mnist_loader.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use crate::types::DataVector;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `image_file_path`
[INFO] [stdout]   --> src/mnist_loader.rs:41:15
[INFO] [stdout]    |
[INFO] [stdout] 41 |     fn images(image_file_path: PathBuf, expected_length: usize) -> Result<Vec<u8>> {
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_image_file_path`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `expected_length`
[INFO] [stdout]   --> src/mnist_loader.rs:41:41
[INFO] [stdout]    |
[INFO] [stdout] 41 |     fn images(image_file_path: PathBuf, expected_length: usize) -> Result<Vec<u8>> {
[INFO] [stdout]    |                                         ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_expected_length`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `training_labels` is never read
[INFO] [stdout]   --> src/mnist_loader.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub struct MnistData {
[INFO] [stdout]    |            --------- field in this struct
[INFO] [stdout] 13 |     training_labels: Vec<u8>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `TESTING_DATA_LENGTH` is never used
[INFO] [stdout]   --> src/mnist_loader.rs:25:7
[INFO] [stdout]    |
[INFO] [stdout] 25 | const TESTING_DATA_LENGTH: usize = 10_000;
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `image` and `label` are never read
[INFO] [stdout]  --> src/training_data.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct Sample {
[INFO] [stdout]   |            ------ fields in this struct
[INFO] [stdout] 6 |     image: DataVector,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 7 |     label: Scalar,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 34.11s
[INFO] running `Command { std: "docker" "inspect" "f3d2c50f84c49fcbf5d2c246532b0553262f6d90c8bf98b2459f821fc9b95e8f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f3d2c50f84c49fcbf5d2c246532b0553262f6d90c8bf98b2459f821fc9b95e8f", kill_on_drop: false }`
[INFO] [stdout] f3d2c50f84c49fcbf5d2c246532b0553262f6d90c8bf98b2459f821fc9b95e8f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-03-05" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5f9d3797e616853cf1fad252bc8ae3063f36ffbb31cf382d74751f1d538fddc8
[INFO] running `Command { std: "docker" "start" "-a" "5f9d3797e616853cf1fad252bc8ae3063f36ffbb31cf382d74751f1d538fddc8", kill_on_drop: false }`
[INFO] [stderr]    Compiling nn-and-dl v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `BufReader`
[INFO] [stdout]  --> src/mnist_loader.rs:3:10
[INFO] [stdout]   |
[INFO] [stdout] 3 |     io::{BufReader, Read},
[INFO] [stdout]   |          ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::types::DataVector`
[INFO] [stdout]   --> src/mnist_loader.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use crate::types::DataVector;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `image_file_path`
[INFO] [stdout]   --> src/mnist_loader.rs:41:15
[INFO] [stdout]    |
[INFO] [stdout] 41 |     fn images(image_file_path: PathBuf, expected_length: usize) -> Result<Vec<u8>> {
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_image_file_path`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `expected_length`
[INFO] [stdout]   --> src/mnist_loader.rs:41:41
[INFO] [stdout]    |
[INFO] [stdout] 41 |     fn images(image_file_path: PathBuf, expected_length: usize) -> Result<Vec<u8>> {
[INFO] [stdout]    |                                         ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_expected_length`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `training_labels` is never read
[INFO] [stdout]   --> src/mnist_loader.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub struct MnistData {
[INFO] [stdout]    |            --------- field in this struct
[INFO] [stdout] 13 |     training_labels: Vec<u8>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `TESTING_DATA_LENGTH` is never used
[INFO] [stdout]   --> src/mnist_loader.rs:25:7
[INFO] [stdout]    |
[INFO] [stdout] 25 | const TESTING_DATA_LENGTH: usize = 10_000;
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `image` and `label` are never read
[INFO] [stdout]  --> src/training_data.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct Sample {
[INFO] [stdout]   |            ------ fields in this struct
[INFO] [stdout] 6 |     image: DataVector,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 7 |     label: Scalar,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.54s
[INFO] running `Command { std: "docker" "inspect" "5f9d3797e616853cf1fad252bc8ae3063f36ffbb31cf382d74751f1d538fddc8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5f9d3797e616853cf1fad252bc8ae3063f36ffbb31cf382d74751f1d538fddc8", kill_on_drop: false }`
[INFO] [stdout] 5f9d3797e616853cf1fad252bc8ae3063f36ffbb31cf382d74751f1d538fddc8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-03-05" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 1f40a6e17c451d4c30dec7b142162f1e36199b1e59b0f359504a54d554358bf1
[INFO] running `Command { std: "docker" "start" "-a" "1f40a6e17c451d4c30dec7b142162f1e36199b1e59b0f359504a54d554358bf1", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `BufReader`
[INFO] [stderr]  --> src/mnist_loader.rs:3:10
[INFO] [stderr]   |
[INFO] [stderr] 3 |     io::{BufReader, Read},
[INFO] [stderr]   |          ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::types::DataVector`
[INFO] [stderr]   --> src/mnist_loader.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | use crate::types::DataVector;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `image_file_path`
[INFO] [stderr]   --> src/mnist_loader.rs:41:15
[INFO] [stderr]    |
[INFO] [stderr] 41 |     fn images(image_file_path: PathBuf, expected_length: usize) -> Result<Vec<u8>> {
[INFO] [stderr]    |               ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_image_file_path`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `expected_length`
[INFO] [stderr]   --> src/mnist_loader.rs:41:41
[INFO] [stderr]    |
[INFO] [stderr] 41 |     fn images(image_file_path: PathBuf, expected_length: usize) -> Result<Vec<u8>> {
[INFO] [stderr]    |                                         ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_expected_length`
[INFO] [stderr] 
[INFO] [stderr] warning: field `training_labels` is never read
[INFO] [stderr]   --> src/mnist_loader.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | pub struct MnistData {
[INFO] [stderr]    |            --------- field in this struct
[INFO] [stderr] 13 |     training_labels: Vec<u8>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant `TESTING_DATA_LENGTH` is never used
[INFO] [stderr]   --> src/mnist_loader.rs:25:7
[INFO] [stderr]    |
[INFO] [stderr] 25 | const TESTING_DATA_LENGTH: usize = 10_000;
[INFO] [stderr]    |       ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: fields `image` and `label` are never read
[INFO] [stderr]  --> src/training_data.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub struct Sample {
[INFO] [stderr]   |            ------ fields in this struct
[INFO] [stderr] 6 |     image: DataVector,
[INFO] [stderr]   |     ^^^^^
[INFO] [stderr] 7 |     label: Scalar,
[INFO] [stderr]   |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `nn-and-dl` (bin "nn-and-dl" test) generated 7 warnings (run `cargo fix --bin "nn-and-dl" -p nn-and-dl --tests` to apply 4 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.11s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/nn_and_dl-54727101246f4ee5)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test network::tests::create_network ... ok
[INFO] [stderr] error: test failed, to rerun pass `--bin nn-and-dl`
[INFO] [stdout] test mnist_loader::tests::read_data ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- mnist_loader::tests::read_data stdout ----
[INFO] [stdout] /opt/rustwide/workdir/data/train-labels-idx1-ubyte
[INFO] [stdout] 
[INFO] [stdout] thread 'mnist_loader::tests::read_data' (16) panicked at src/mnist_loader.rs:74:13:
[INFO] [stdout] assertion failed: file.is_ok()
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x5c25b5fb79aa - std[b80a194dd3c418bb]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x5c25b5fb79aa - std[b80a194dd3c418bb]::backtrace_rs::backtrace::trace_unsynchronized::<std[b80a194dd3c418bb]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x5c25b5fb79aa - std[b80a194dd3c418bb]::sys::backtrace::_print_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x5c25b5fb79aa - <<std[b80a194dd3c418bb]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[10b6fa85044e1869]::fmt::Display>::fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x5c25b5fcc2ca - <core[10b6fa85044e1869]::fmt::rt::Argument>::fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x5c25b5fcc2ca - core[10b6fa85044e1869]::fmt::write
[INFO] [stdout]    6:     0x5c25b5fbc762 - std[b80a194dd3c418bb]::io::default_write_fmt::<alloc[dd269455e567d8e9]::vec::Vec<u8>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x5c25b5fbc762 - <alloc[dd269455e567d8e9]::vec::Vec<u8> as std[b80a194dd3c418bb]::io::Write>::write_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x5c25b5f967af - <std[b80a194dd3c418bb]::sys::backtrace::BacktraceLock>::print
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x5c25b5f967af - std[b80a194dd3c418bb]::panicking::default_hook::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x5c25b5fafef9 - std[b80a194dd3c418bb]::panicking::default_hook
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x5c25b5f42fcc - <alloc[dd269455e567d8e9]::boxed::Box<dyn for<'a, 'b> core[10b6fa85044e1869]::ops::function::Fn<(&'a std[b80a194dd3c418bb]::panic::PanicHookInfo<'b>,), Output = ()> + core[10b6fa85044e1869]::marker::Sync + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::Fn<(&std[b80a194dd3c418bb]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2254:9
[INFO] [stdout]   12:     0x5c25b5f42fcc - test[826cbc6ef54ab466]::test_main_with_exit_callback::<test[826cbc6ef54ab466]::test_main::{closure#0}>::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x5c25b5fb00b2 - <alloc[dd269455e567d8e9]::boxed::Box<dyn for<'a, 'b> core[10b6fa85044e1869]::ops::function::Fn<(&'a std[b80a194dd3c418bb]::panic::PanicHookInfo<'b>,), Output = ()> + core[10b6fa85044e1869]::marker::Sync + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::Fn<(&std[b80a194dd3c418bb]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2254:9
[INFO] [stdout]   14:     0x5c25b5fb00b2 - std[b80a194dd3c418bb]::panicking::panic_with_hook
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x5c25b5f9689a - std[b80a194dd3c418bb]::panicking::panic_handler::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:691:13
[INFO] [stdout]   16:     0x5c25b5f8dca9 - std[b80a194dd3c418bb]::sys::backtrace::__rust_end_short_backtrace::<std[b80a194dd3c418bb]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x5c25b5f9766d - __rustc[9698a3e60dd14283]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x5c25b5fccb3c - core[10b6fa85044e1869]::panicking::panic_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x5c25b5fccb02 - core[10b6fa85044e1869]::panicking::panic
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panicking.rs:150:5
[INFO] [stdout]   20:     0x5c25b5eff302 - nn_and_dl::mnist_loader::tests::read_data::h7adaa0219d6dbc9d
[INFO] [stdout]                                at /opt/rustwide/workdir/src/mnist_loader.rs:74:13
[INFO] [stdout]   21:     0x5c25b5eff417 - nn_and_dl::mnist_loader::tests::read_data::{{closure}}::hcbcc238edf2e83b3
[INFO] [stdout]                                at /opt/rustwide/workdir/src/mnist_loader.rs:61:19
[INFO] [stdout]   22:     0x5c25b5efcc86 - core::ops::function::FnOnce::call_once::h6cbdd47873dbfa01
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   23:     0x5c25b5f370ab - <fn() -> core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x5c25b5f370ab - test[826cbc6ef54ab466]::__rust_begin_short_backtrace::<core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>, fn() -> core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:663:18
[INFO] [stdout]   25:     0x5c25b5f43a9b - test[826cbc6ef54ab466]::run_test_in_process::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:686:74
[INFO] [stdout]   26:     0x5c25b5f43a9b - <core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   27:     0x5c25b5f43a9b - std[b80a194dd3c418bb]::panicking::catch_unwind::do_call::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>, core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:581:40
[INFO] [stdout]   28:     0x5c25b5f43a9b - std[b80a194dd3c418bb]::panicking::catch_unwind::<core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>, core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:544:19
[INFO] [stdout]   29:     0x5c25b5f43a9b - std[b80a194dd3c418bb]::panic::catch_unwind::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>, core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panic.rs:359:14
[INFO] [stdout]   30:     0x5c25b5f43a9b - test[826cbc6ef54ab466]::run_test_in_process
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:686:27
[INFO] [stdout]   31:     0x5c25b5f43a9b - test[826cbc6ef54ab466]::run_test::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:607:43
[INFO] [stdout]   32:     0x5c25b5f3f1b4 - test[826cbc6ef54ab466]::run_test::{closure#1}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:637:41
[INFO] [stdout]   33:     0x5c25b5f3f1b4 - std[b80a194dd3c418bb]::sys::backtrace::__rust_begin_short_backtrace::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   34:     0x5c25b5f466a2 - std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   35:     0x5c25b5f466a2 - <core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   36:     0x5c25b5f466a2 - std[b80a194dd3c418bb]::panicking::catch_unwind::do_call::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:581:40
[INFO] [stdout]   37:     0x5c25b5f466a2 - std[b80a194dd3c418bb]::panicking::catch_unwind::<(), core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:544:19
[INFO] [stdout]   38:     0x5c25b5f466a2 - std[b80a194dd3c418bb]::panic::catch_unwind::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panic.rs:359:14
[INFO] [stdout]   39:     0x5c25b5f466a2 - std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   40:     0x5c25b5f466a2 - <std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1} as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   41:     0x5c25b5fb72bf - <alloc[dd269455e567d8e9]::boxed::Box<dyn core[10b6fa85044e1869]::ops::function::FnOnce<(), Output = ()> + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2240:9
[INFO] [stdout]   42:     0x5c25b5fb72bf - <std[b80a194dd3c418bb]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/thread/unix.rs:118:17
[INFO] [stdout]   43:     0x79c0a1934aa4 - <unknown>
[INFO] [stdout]   44:     0x79c0a19c1a64 - clone
[INFO] [stdout]   45:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     mnist_loader::tests::read_data
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 1 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.05s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "1f40a6e17c451d4c30dec7b142162f1e36199b1e59b0f359504a54d554358bf1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1f40a6e17c451d4c30dec7b142162f1e36199b1e59b0f359504a54d554358bf1", kill_on_drop: false }`
[INFO] [stdout] 1f40a6e17c451d4c30dec7b142162f1e36199b1e59b0f359504a54d554358bf1
