[INFO] updating cached repository SkyZH/mnist.rs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/SkyZH/mnist.rs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/SkyZH/mnist.rs" "work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/SkyZH/mnist.rs"`
[INFO] [stderr] Cloning into 'work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/SkyZH/mnist.rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/SkyZH/mnist.rs" "work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/SkyZH/mnist.rs"`
[INFO] [stderr] Cloning into 'work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/SkyZH/mnist.rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c044b786e115928f48f2722441a010b2ec315fe0
[INFO] sha for GitHub repo SkyZH/mnist.rs: c044b786e115928f48f2722441a010b2ec315fe0
[INFO] validating manifest of SkyZH/mnist.rs on toolchain master#e305df1846a6d985315917ae0c81b74af8b4e641
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of SkyZH/mnist.rs on toolchain try#99a7498759a22b5684caf798a98b7e90ad9d2443
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+99a7498759a22b5684caf798a98b7e90ad9d2443-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing SkyZH/mnist.rs
[INFO] finished frobbing SkyZH/mnist.rs
[INFO] frobbed toml for SkyZH/mnist.rs written to work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/SkyZH/mnist.rs/Cargo.toml
[INFO] started frobbing SkyZH/mnist.rs
[INFO] finished frobbing SkyZH/mnist.rs
[INFO] frobbed toml for SkyZH/mnist.rs written to work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/SkyZH/mnist.rs/Cargo.toml
[INFO] crate SkyZH/mnist.rs already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+99a7498759a22b5684caf798a98b7e90ad9d2443-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking SkyZH/mnist.rs against try#99a7498759a22b5684caf798a98b7e90ad9d2443 for pr-60039-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-60039-1/worker-1/try#99a7498759a22b5684caf798a98b7e90ad9d2443:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/SkyZH/mnist.rs:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+99a7498759a22b5684caf798a98b7e90ad9d2443-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 042938c90e39420a4db24b4a1b2042bcb58d611f8fb76cb812d22c779af24c5d
[INFO] running `"docker" "start" "-a" "042938c90e39420a4db24b4a1b2042bcb58d611f8fb76cb812d22c779af24c5d"`
[INFO] [stderr]     Checking mnist v0.4.0
[INFO] [stderr]     Checking rulinalg v0.4.2
[INFO] [stderr]     Checking mnist-deep-learning v0.1.0 (/opt/crater/workdir)
[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 import: `Matrix`
[INFO] [stderr]  --> src/trainer/evaluate.rs:4:26
[INFO] [stderr]   |
[INFO] [stderr] 4 |     matrix::{BaseMatrix, Matrix},
[INFO] [stderr]   |                          ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Map`, `Zip`
[INFO] [stderr]  --> src/trainer/network.rs:6:17
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::iter::{Map, Zip};
[INFO] [stderr]   |                 ^^^  ^^^
[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 import: `Matrix`
[INFO] [stderr]  --> src/trainer/evaluate.rs:4:26
[INFO] [stderr]   |
[INFO] [stderr] 4 |     matrix::{BaseMatrix, Matrix},
[INFO] [stderr]   |                          ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Map`, `Zip`
[INFO] [stderr]  --> src/trainer/network.rs:6:17
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::iter::{Map, Zip};
[INFO] [stderr]   |                 ^^^  ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Matrix`
[INFO] [stderr]    --> src/trainer/network.rs:152:29
[INFO] [stderr]     |
[INFO] [stderr] 152 |     use super::{BaseMatrix, Matrix, Network, Vector};
[INFO] [stderr]     |                             ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'rand::Rng::shuffle': use SliceRandom::shuffle instead
[INFO] [stderr]   --> src/trainer/network.rs:95:28
[INFO] [stderr]    |
[INFO] [stderr] 95 |         rand::thread_rng().shuffle(&mut shuffle_batch);
[INFO] [stderr]    |                            ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(deprecated)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `BaseMatrix`
[INFO] [stderr]  --> src/trainer/dataset.rs:2:24
[INFO] [stderr]   |
[INFO] [stderr] 2 | use rulinalg::matrix::{BaseMatrix, Matrix};
[INFO] [stderr]   |                        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `val`
[INFO] [stderr]   --> src/trainer/evaluate.rs:17:23
[INFO] [stderr]    |
[INFO] [stderr] 17 |             let (idx, val) = network.feedforward(&batch).argmax();
[INFO] [stderr]    |                       ^^^ help: consider prefixing with an underscore: `_val`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `network`
[INFO] [stderr]    --> src/trainer/network.rs:170:13
[INFO] [stderr]     |
[INFO] [stderr] 170 |         let network = Network::init(&vec![800 as usize, 3 as usize, 10 as usize]);
[INFO] [stderr]     |             ^^^^^^^ help: consider prefixing with an underscore: `_network`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'rand::Rng::shuffle': use SliceRandom::shuffle instead
[INFO] [stderr]   --> src/trainer/network.rs:95:28
[INFO] [stderr]    |
[INFO] [stderr] 95 |         rand::thread_rng().shuffle(&mut shuffle_batch);
[INFO] [stderr]    |                            ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(deprecated)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `BaseMatrix`
[INFO] [stderr]  --> src/trainer/dataset.rs:2:24
[INFO] [stderr]   |
[INFO] [stderr] 2 | use rulinalg::matrix::{BaseMatrix, Matrix};
[INFO] [stderr]   |                        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `val`
[INFO] [stderr]   --> src/trainer/evaluate.rs:17:23
[INFO] [stderr]    |
[INFO] [stderr] 17 |             let (idx, val) = network.feedforward(&batch).argmax();
[INFO] [stderr]    |                       ^^^ help: consider prefixing with an underscore: `_val`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `placeholder`
[INFO] [stderr]  --> src/trainer/dataset.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     placeholder: bool,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `placeholder`
[INFO] [stderr]  --> src/trainer/dataset.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     placeholder: bool,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.68s
[INFO] running `"docker" "inspect" "042938c90e39420a4db24b4a1b2042bcb58d611f8fb76cb812d22c779af24c5d"`
[INFO] running `"docker" "rm" "-f" "042938c90e39420a4db24b4a1b2042bcb58d611f8fb76cb812d22c779af24c5d"`
[INFO] [stdout] 042938c90e39420a4db24b4a1b2042bcb58d611f8fb76cb812d22c779af24c5d