[INFO] cloning repository https://github.com/connorcl/rust-nn
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/connorcl/rust-nn" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fconnorcl%2Frust-nn", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fconnorcl%2Frust-nn'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5a82b48e87f0b43018671d601407a52e0a52f6fe
[INFO] testing connorcl/rust-nn against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fconnorcl%2Frust-nn" "/workspace/builds/worker-33/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-33/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/connorcl/rust-nn on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/connorcl/rust-nn
[INFO] finished tweaking git repo https://github.com/connorcl/rust-nn
[INFO] tweaked toml for git repo https://github.com/connorcl/rust-nn written to /workspace/builds/worker-33/source/Cargo.toml
[INFO] crate git repo https://github.com/connorcl/rust-nn already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e7d1eb7ad39fc57254b6c0780d5b59de95ff0cb44c838d39eca80131af60a3db
[INFO] running `Command { std: "docker" "start" "-a" "e7d1eb7ad39fc57254b6c0780d5b59de95ff0cb44c838d39eca80131af60a3db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e7d1eb7ad39fc57254b6c0780d5b59de95ff0cb44c838d39eca80131af60a3db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e7d1eb7ad39fc57254b6c0780d5b59de95ff0cb44c838d39eca80131af60a3db", kill_on_drop: false }`
[INFO] [stdout] e7d1eb7ad39fc57254b6c0780d5b59de95ff0cb44c838d39eca80131af60a3db
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ea4716752ce2c3f8e35ea52f96addb02badcefc847516d1b8d7db6a5707249d7
[INFO] running `Command { std: "docker" "start" "-a" "ea4716752ce2c3f8e35ea52f96addb02badcefc847516d1b8d7db6a5707249d7", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling ppv-lite86 v0.2.6
[INFO] [stderr]    Compiling c2-chacha v0.2.3
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.1
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling rand_distr v0.2.2
[INFO] [stderr]    Compiling neural_net v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 34.02s
[INFO] running `Command { std: "docker" "inspect" "ea4716752ce2c3f8e35ea52f96addb02badcefc847516d1b8d7db6a5707249d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ea4716752ce2c3f8e35ea52f96addb02badcefc847516d1b8d7db6a5707249d7", kill_on_drop: false }`
[INFO] [stdout] ea4716752ce2c3f8e35ea52f96addb02badcefc847516d1b8d7db6a5707249d7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8343037c53ed47a95415c15c6b49d8c09c80bfe453f52fd6225b436fd43b2855
[INFO] running `Command { std: "docker" "start" "-a" "8343037c53ed47a95415c15c6b49d8c09c80bfe453f52fd6225b436fd43b2855", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling neural_net v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/dataset.rs:140:13
[INFO] [stdout]     |
[INFO] [stdout] 140 |         for i in 0..2 {
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `m`
[INFO] [stdout]    --> src/dataset.rs:142:17
[INFO] [stdout]     |
[INFO] [stdout] 142 |             for m in dataset.iter() {
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_m`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 8.55s
[INFO] running `Command { std: "docker" "inspect" "8343037c53ed47a95415c15c6b49d8c09c80bfe453f52fd6225b436fd43b2855", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8343037c53ed47a95415c15c6b49d8c09c80bfe453f52fd6225b436fd43b2855", kill_on_drop: false }`
[INFO] [stdout] 8343037c53ed47a95415c15c6b49d8c09c80bfe453f52fd6225b436fd43b2855
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 01a8c8846b53234a9592be12a664edd3227998cd9208da55eb2f14d045399162
[INFO] running `Command { std: "docker" "start" "-a" "01a8c8846b53234a9592be12a664edd3227998cd9208da55eb2f14d045399162", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]    --> src/dataset.rs:140:13
[INFO] [stderr]     |
[INFO] [stderr] 140 |         for i in 0..2 {
[INFO] [stderr]     |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `m`
[INFO] [stderr]    --> src/dataset.rs:142:17
[INFO] [stderr]     |
[INFO] [stderr] 142 |             for m in dataset.iter() {
[INFO] [stderr]     |                 ^ help: if this is intentional, prefix it with an underscore: `_m`
[INFO] [stderr] 
[INFO] [stderr] warning: `neural_net` (lib test) generated 2 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/neural_net-3665f82344a2a43a)
[INFO] [stdout] 
[INFO] [stdout] running 20 tests
[INFO] [stdout] test linear_algebra::tests::coord_index_conversion ... ok
[INFO] [stdout] test linear_algebra::tests::create_from_vector ... ok
[INFO] [stdout] test layers::tests::linear_backward ... ok
[INFO] [stdout] test layers::tests::linear_forward ... ok
[INFO] [stdout] test linear_algebra::tests::element_access ... ok
[INFO] [stdout] test linear_algebra::tests::element_modification ... ok
[INFO] [stdout] test linear_algebra::tests::elementwise_addition ... ok
[INFO] [stdout] test linear_algebra::tests::gradient_descent ... ok
[INFO] [stdout] test linear_algebra::tests::initial_cols ... ok
[INFO] [stdout] test linear_algebra::tests::initial_data_len ... ok
[INFO] [stdout] test linear_algebra::tests::initial_rows ... ok
[INFO] [stdout] test linear_algebra::tests::initialize_gradients ... ok
[INFO] [stdout] test linear_algebra::tests::matrix_multiply ... ok
[INFO] [stdout] test linear_algebra::tests::matrix_transposition ... ok
[INFO] [stdout] test dataset::tests::data_loading ... ok
[INFO] [stdout] test dataset::tests::dataset_iteration ... ok
[INFO] [stdout] test linear_algebra::tests::create_from_invalid_vector - should panic ... ok
[INFO] [stdout] test linear_algebra::tests::elementwise_add_wrong_size - should panic ... ok
[INFO] [stdout] test linear_algebra::tests::matrix_multiply_wrong_size - should panic ... ok
[INFO] [stdout] test linear_algebra::tests::out_of_bounds_access - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 20 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.07s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/neural_net-3ee2256a1321a81d)
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests neural_net
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "01a8c8846b53234a9592be12a664edd3227998cd9208da55eb2f14d045399162", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "01a8c8846b53234a9592be12a664edd3227998cd9208da55eb2f14d045399162", kill_on_drop: false }`
[INFO] [stdout] 01a8c8846b53234a9592be12a664edd3227998cd9208da55eb2f14d045399162