[INFO] updating cached repository https://github.com/SkyZH/mnist.rs
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 70b95e47ea15cbbfe2d7ba45bde0fc64a17971fa
[INFO] testing SkyZH/mnist.rs against beta-2019-09-28 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2FSkyZH%2Fmnist.rs" "work/builds/worker-2/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/SkyZH/mnist.rs on toolchain beta-2019-09-28
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/SkyZH/mnist.rs
[INFO] finished tweaking git repo https://github.com/SkyZH/mnist.rs
[INFO] tweaked toml for git repo https://github.com/SkyZH/mnist.rs written to work/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/SkyZH/mnist.rs already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "build" "--frozen"`
[INFO] [stdout] f7045820bcd67121328bfb4202d2654cb759c0629a72ab3991eb8bf54dc22b12
[INFO] running `"docker" "start" "-a" "f7045820bcd67121328bfb4202d2654cb759c0629a72ab3991eb8bf54dc22b12"`
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling num-iter v0.1.39
[INFO] [stderr]    Compiling rand_chacha v0.2.0
[INFO] [stderr]    Compiling lazy_static v1.3.0
[INFO] [stderr]    Compiling mnist v0.4.0
[INFO] [stderr]    Compiling getrandom v0.1.6
[INFO] [stderr]    Compiling c2-chacha v0.2.2
[INFO] [stderr]    Compiling rand_core v0.5.0
[INFO] [stderr]    Compiling rand v0.7.0
[INFO] [stderr]    Compiling num v0.1.42
[INFO] [stderr]    Compiling rulinalg v0.4.2
[INFO] [stderr]    Compiling mnist-deep-learning v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]  --> src/lib.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #[macro_use]
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/network/network.rs:4:25
[INFO] [stderr]   |
[INFO] [stderr] 4 |     pub layers: Vec<Box<Layer + Sync>>
[INFO] [stderr]   |                         ^^^^^^^^^^^^ help: use `dyn`: `dyn Layer + Sync`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/network/network.rs:24:32
[INFO] [stderr]    |
[INFO] [stderr] 24 |     pub fn new(layers: Vec<Box<Layer + Sync>>) -> Self {
[INFO] [stderr]    |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn Layer + Sync`
[INFO] [stderr] 
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]  --> src/main.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #[macro_use]
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `BaseMatrix`, `Matrix`
[INFO] [stderr]  --> src/main.rs:6:14
[INFO] [stderr]   |
[INFO] [stderr] 6 |     matrix::{BaseMatrix, Matrix},
[INFO] [stderr]   |              ^^^^^^^^^^  ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/network/network.rs:4:25
[INFO] [stderr]   |
[INFO] [stderr] 4 |     pub layers: Vec<Box<Layer + Sync>>
[INFO] [stderr]   |                         ^^^^^^^^^^^^ help: use `dyn`: `dyn Layer + Sync`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/network/network.rs:24:32
[INFO] [stderr]    |
[INFO] [stderr] 24 |     pub fn new(layers: Vec<Box<Layer + Sync>>) -> Self {
[INFO] [stderr]    |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn Layer + Sync`
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new_test`
[INFO] [stderr]   --> src/network/network.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     pub fn new_test() -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `data`
[INFO] [stderr]  --> src/dataset.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 |     data: Mnist,
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.19s
[INFO] running `"docker" "inspect" "f7045820bcd67121328bfb4202d2654cb759c0629a72ab3991eb8bf54dc22b12"`
[INFO] running `"docker" "rm" "-f" "f7045820bcd67121328bfb4202d2654cb759c0629a72ab3991eb8bf54dc22b12"`
[INFO] [stdout] f7045820bcd67121328bfb4202d2654cb759c0629a72ab3991eb8bf54dc22b12
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "test" "--frozen" "--no-run"`
[INFO] [stdout] a8bdd894c64a6ccb6e6a4c56b2038832b9782157490a94400f8a13f7df649c9b
[INFO] running `"docker" "start" "-a" "a8bdd894c64a6ccb6e6a4c56b2038832b9782157490a94400f8a13f7df649c9b"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling mnist-deep-learning v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/network/network.rs:4:25
[INFO] [stderr]   |
[INFO] [stderr] 4 |     pub layers: Vec<Box<Layer + Sync>>
[INFO] [stderr]   |                         ^^^^^^^^^^^^ help: use `dyn`: `dyn Layer + Sync`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/network/network.rs:24:32
[INFO] [stderr]    |
[INFO] [stderr] 24 |     pub fn new(layers: Vec<Box<Layer + Sync>>) -> Self {
[INFO] [stderr]    |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn Layer + Sync`
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `BaseMatrix`, `Matrix`
[INFO] [stderr]  --> src/main.rs:6:14
[INFO] [stderr]   |
[INFO] [stderr] 6 |     matrix::{BaseMatrix, Matrix},
[INFO] [stderr]   |              ^^^^^^^^^^  ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/network/network.rs:4:25
[INFO] [stderr]   |
[INFO] [stderr] 4 |     pub layers: Vec<Box<Layer + Sync>>
[INFO] [stderr]   |                         ^^^^^^^^^^^^ help: use `dyn`: `dyn Layer + Sync`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/network/network.rs:24:32
[INFO] [stderr]    |
[INFO] [stderr] 24 |     pub fn new(layers: Vec<Box<Layer + Sync>>) -> Self {
[INFO] [stderr]    |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn Layer + Sync`
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `data`
[INFO] [stderr]  --> src/dataset.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 |     data: Mnist,
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.99s
[INFO] running `"docker" "inspect" "a8bdd894c64a6ccb6e6a4c56b2038832b9782157490a94400f8a13f7df649c9b"`
[INFO] running `"docker" "rm" "-f" "a8bdd894c64a6ccb6e6a4c56b2038832b9782157490a94400f8a13f7df649c9b"`
[INFO] [stdout] a8bdd894c64a6ccb6e6a4c56b2038832b9782157490a94400f8a13f7df649c9b
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "test" "--frozen"`
[INFO] [stdout] f97a114c40e075757319b60010e80f16569cf42fc064f41f473c79d97810d9de
[INFO] running `"docker" "start" "-a" "f97a114c40e075757319b60010e80f16569cf42fc064f41f473c79d97810d9de"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/mnist_deep_learning-85d9bb244cc167b2
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test network::network::tests::test_create_mnist_network ... ok
[INFO] [stdout] test network::mse::tests::test_cost ... ok
[INFO] [stdout] test network::mse::tests::test_dcost ... ok
[INFO] [stdout] test trainer::sgd::tests::test_back_prop ... ok
[INFO] [stdout] test trainer::sgd::tests::test_feed_forward ... ok
[INFO] [stdout] test trainer::sgd::tests::test_create_mnist_network_size ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/mnist_deep_learning-d1595b5ad43dbd2e
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test network::network::tests::test_create_mnist_network ... ok
[INFO] [stdout] test network::mse::tests::test_cost ... ok
[INFO] [stdout] test network::mse::tests::test_dcost ... ok
[INFO] [stdout] test trainer::sgd::tests::test_feed_forward ... ok
[INFO] [stdout] test trainer::sgd::tests::test_back_prop ... ok
[INFO] [stdout] test trainer::sgd::tests::test_create_mnist_network_size ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests mnist-deep-learning
[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
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "f97a114c40e075757319b60010e80f16569cf42fc064f41f473c79d97810d9de"`
[INFO] running `"docker" "rm" "-f" "f97a114c40e075757319b60010e80f16569cf42fc064f41f473c79d97810d9de"`
[INFO] [stdout] f97a114c40e075757319b60010e80f16569cf42fc064f41f473c79d97810d9de