[INFO] cloning repository https://github.com/jaroslaw-weber/rust-ml-from-scratch
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jaroslaw-weber/rust-ml-from-scratch" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjaroslaw-weber%2Frust-ml-from-scratch", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjaroslaw-weber%2Frust-ml-from-scratch'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6eaecb746eae46b8964018a9846b1aa6f911d3b7
[INFO] testing jaroslaw-weber/rust-ml-from-scratch against 1.49.0 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjaroslaw-weber%2Frust-ml-from-scratch" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jaroslaw-weber/rust-ml-from-scratch on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jaroslaw-weber/rust-ml-from-scratch
[INFO] finished tweaking git repo https://github.com/jaroslaw-weber/rust-ml-from-scratch
[INFO] tweaked toml for git repo https://github.com/jaroslaw-weber/rust-ml-from-scratch written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/jaroslaw-weber/rust-ml-from-scratch already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bbea39c4f37e3c38135c604ae1124bdc537449cb9251ae9a5f281ecf93d34f88
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "bbea39c4f37e3c38135c604ae1124bdc537449cb9251ae9a5f281ecf93d34f88", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bbea39c4f37e3c38135c604ae1124bdc537449cb9251ae9a5f281ecf93d34f88", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bbea39c4f37e3c38135c604ae1124bdc537449cb9251ae9a5f281ecf93d34f88", kill_on_drop: false }`
[INFO] [stdout] bbea39c4f37e3c38135c604ae1124bdc537449cb9251ae9a5f281ecf93d34f88
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] af34be54f6c8ddd9a83d0e8511452c04cb9c3880da708be48fa4483b755039dd
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "af34be54f6c8ddd9a83d0e8511452c04cb9c3880da708be48fa4483b755039dd", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling rayon-core v1.0.2
[INFO] [stderr]    Compiling inflate v0.2.0
[INFO] [stderr]    Compiling num_cpus v1.5.1
[INFO] [stderr]    Compiling deflate v0.7.11
[INFO] [stderr]    Compiling rayon v0.7.1
[INFO] [stderr]    Compiling png v0.7.0
[INFO] [stderr]    Compiling jpeg-decoder v0.1.12
[INFO] [stderr]    Compiling image v0.13.0
[INFO] [stderr]    Compiling rust_machine_learning v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]   --> src/matrix.rs:42:3
[INFO] [stdout]    |
[INFO] [stdout] 42 |         (index as usize)
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/matrix.rs:248:83
[INFO] [stdout]     |
[INFO] [stdout] 248 |     pub fn matrix_on_matrix_operation(&self, other_matrix:&Matrix, combine_function:&Fn(f32,f32)->f32)->Matrix
[INFO] [stdout]     |                                                                                      ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f32,f32)->f32`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/matrix.rs:261:37
[INFO] [stdout]     |
[INFO] [stdout] 261 |     pub fn map(&self, function_to_map:&Fn(f32)->f32)->Matrix
[INFO] [stdout]     |                                        ^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f32)->f32`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `sum`
[INFO] [stdout]    --> src/matrix.rs:131:9
[INFO] [stdout]     |
[INFO] [stdout] 131 |     pub fn sum(&self)->f32
[INFO] [stdout]     |            ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `max`
[INFO] [stdout]    --> src/matrix.rs:142:9
[INFO] [stdout]     |
[INFO] [stdout] 142 |     pub fn max(&self)->f32
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `divn`
[INFO] [stdout]    --> src/matrix.rs:184:9
[INFO] [stdout]     |
[INFO] [stdout] 184 |     pub fn divn(&self, number:f32)->Matrix
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `softmax`
[INFO] [stdout]   --> src/activations.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub fn softmax(x:&Matrix)->Matrix
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `softmax_stable`
[INFO] [stdout]   --> src/activations.rs:34:8
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub fn softmax_stable(x:&Matrix)->Matrix
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `relu`
[INFO] [stdout]   --> src/activations.rs:42:8
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub fn relu(x:&Matrix, derivative:bool)->Matrix
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 41.82s
[INFO] running `Command { std: "docker" "inspect" "af34be54f6c8ddd9a83d0e8511452c04cb9c3880da708be48fa4483b755039dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "af34be54f6c8ddd9a83d0e8511452c04cb9c3880da708be48fa4483b755039dd", kill_on_drop: false }`
[INFO] [stdout] af34be54f6c8ddd9a83d0e8511452c04cb9c3880da708be48fa4483b755039dd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] c01b5c1fd5417729301cab51319666652fd90e73ff1ecd4eccb10708e250a7e3
[INFO] running `Command { std: "docker" "start" "-a" "c01b5c1fd5417729301cab51319666652fd90e73ff1ecd4eccb10708e250a7e3", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_machine_learning v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]   --> src/matrix.rs:42:3
[INFO] [stdout]    |
[INFO] [stdout] 42 |         (index as usize)
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/matrix.rs:248:83
[INFO] [stdout]     |
[INFO] [stdout] 248 |     pub fn matrix_on_matrix_operation(&self, other_matrix:&Matrix, combine_function:&Fn(f32,f32)->f32)->Matrix
[INFO] [stdout]     |                                                                                      ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f32,f32)->f32`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/matrix.rs:261:37
[INFO] [stdout]     |
[INFO] [stdout] 261 |     pub fn map(&self, function_to_map:&Fn(f32)->f32)->Matrix
[INFO] [stdout]     |                                        ^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f32)->f32`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `sum`
[INFO] [stdout]    --> src/matrix.rs:131:9
[INFO] [stdout]     |
[INFO] [stdout] 131 |     pub fn sum(&self)->f32
[INFO] [stdout]     |            ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `max`
[INFO] [stdout]    --> src/matrix.rs:142:9
[INFO] [stdout]     |
[INFO] [stdout] 142 |     pub fn max(&self)->f32
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `divn`
[INFO] [stdout]    --> src/matrix.rs:184:9
[INFO] [stdout]     |
[INFO] [stdout] 184 |     pub fn divn(&self, number:f32)->Matrix
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `softmax`
[INFO] [stdout]   --> src/activations.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub fn softmax(x:&Matrix)->Matrix
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `softmax_stable`
[INFO] [stdout]   --> src/activations.rs:34:8
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub fn softmax_stable(x:&Matrix)->Matrix
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `relu`
[INFO] [stdout]   --> src/activations.rs:42:8
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub fn relu(x:&Matrix, derivative:bool)->Matrix
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.17s
[INFO] running `Command { std: "docker" "inspect" "c01b5c1fd5417729301cab51319666652fd90e73ff1ecd4eccb10708e250a7e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c01b5c1fd5417729301cab51319666652fd90e73ff1ecd4eccb10708e250a7e3", kill_on_drop: false }`
[INFO] [stdout] c01b5c1fd5417729301cab51319666652fd90e73ff1ecd4eccb10708e250a7e3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] d9a68f1562b5480279b8ba2148e6dd54145b87612087858586ee812bc90135bc
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "d9a68f1562b5480279b8ba2148e6dd54145b87612087858586ee812bc90135bc", kill_on_drop: false }`
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]   --> src/matrix.rs:42:3
[INFO] [stderr]    |
[INFO] [stderr] 42 |         (index as usize)
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/matrix.rs:248:83
[INFO] [stderr]     |
[INFO] [stderr] 248 |     pub fn matrix_on_matrix_operation(&self, other_matrix:&Matrix, combine_function:&Fn(f32,f32)->f32)->Matrix
[INFO] [stderr]     |                                                                                      ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f32,f32)->f32`
[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/matrix.rs:261:37
[INFO] [stderr]     |
[INFO] [stderr] 261 |     pub fn map(&self, function_to_map:&Fn(f32)->f32)->Matrix
[INFO] [stderr]     |                                        ^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f32)->f32`
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `sum`
[INFO] [stderr]    --> src/matrix.rs:131:9
[INFO] [stderr]     |
[INFO] [stderr] 131 |     pub fn sum(&self)->f32
[INFO] [stderr]     |            ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `max`
[INFO] [stderr]    --> src/matrix.rs:142:9
[INFO] [stderr]     |
[INFO] [stderr] 142 |     pub fn max(&self)->f32
[INFO] [stderr]     |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `divn`
[INFO] [stderr]    --> src/matrix.rs:184:9
[INFO] [stderr]     |
[INFO] [stderr] 184 |     pub fn divn(&self, number:f32)->Matrix
[INFO] [stderr]     |            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `softmax`
[INFO] [stderr]   --> src/activations.rs:26:8
[INFO] [stderr]    |
[INFO] [stderr] 26 | pub fn softmax(x:&Matrix)->Matrix
[INFO] [stderr]    |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `softmax_stable`
[INFO] [stderr]   --> src/activations.rs:34:8
[INFO] [stderr]    |
[INFO] [stderr] 34 | pub fn softmax_stable(x:&Matrix)->Matrix
[INFO] [stderr]    |        ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `relu`
[INFO] [stderr]   --> src/activations.rs:42:8
[INFO] [stderr]    |
[INFO] [stderr] 42 | pub fn relu(x:&Matrix, derivative:bool)->Matrix
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 9 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/rust_machine_learning-e9e9ccf32f84267a
[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 `Command { std: "docker" "inspect" "d9a68f1562b5480279b8ba2148e6dd54145b87612087858586ee812bc90135bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d9a68f1562b5480279b8ba2148e6dd54145b87612087858586ee812bc90135bc", kill_on_drop: false }`
[INFO] [stdout] d9a68f1562b5480279b8ba2148e6dd54145b87612087858586ee812bc90135bc