[INFO] cloning repository https://github.com/ts-87/marathon_rust_lib
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ts-87/marathon_rust_lib" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fts-87%2Fmarathon_rust_lib", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fts-87%2Fmarathon_rust_lib'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2159e5dd0dd76ac7af75f1a1ca1bd5d29fb0641e
[INFO] checking ts-87/marathon_rust_lib against master#a609fb45efad59dfd459c76e50899be9f0583b5a for pr-80579
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fts-87%2Fmarathon_rust_lib" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ts-87/marathon_rust_lib on toolchain a609fb45efad59dfd459c76e50899be9f0583b5a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ts-87/marathon_rust_lib
[INFO] finished tweaking git repo https://github.com/ts-87/marathon_rust_lib
[INFO] tweaked toml for git repo https://github.com/ts-87/marathon_rust_lib written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/ts-87/marathon_rust_lib already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 593b15fc23bf9213fe1e7b9e623bd3e3661285d75aa68480475da0b96833120c
[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" "593b15fc23bf9213fe1e7b9e623bd3e3661285d75aa68480475da0b96833120c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "593b15fc23bf9213fe1e7b9e623bd3e3661285d75aa68480475da0b96833120c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "593b15fc23bf9213fe1e7b9e623bd3e3661285d75aa68480475da0b96833120c", kill_on_drop: false }`
[INFO] [stdout] 593b15fc23bf9213fe1e7b9e623bd3e3661285d75aa68480475da0b96833120c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6f3c325de390b4e13390c99f4c3605ddaf5827c540593df7f04603999fe59026
[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" "6f3c325de390b4e13390c99f4c3605ddaf5827c540593df7f04603999fe59026", kill_on_drop: false }`
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking rawpointer v0.2.1
[INFO] [stderr]    Compiling ndarray v0.13.1
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]     Checking getrandom v0.1.15
[INFO] [stderr]     Checking matrixmultiply v0.2.4
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_pcg v0.2.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking library v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::io::Read`
[INFO] [stdout]   --> src/data_structure/disjoint_set.rs:72:5
[INFO] [stdout]    |
[INFO] [stdout] 72 | use std::io::Read;
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Read`
[INFO] [stdout]   --> src/data_structure/fenwick_tree.rs:41:5
[INFO] [stdout]    |
[INFO] [stdout] 41 | use std::io::Read;
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `arr1`, `arr2`
[INFO] [stdout]  --> src/machine_learning/ml_util.rs:1:31
[INFO] [stdout]   |
[INFO] [stdout] 1 | use ndarray::{Array1, Array2, arr1, arr2, NdFloat};
[INFO] [stdout]   |                               ^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `ArrayView2`, `arr1`, `arr2`
[INFO] [stdout]  --> src/machine_learning/linear_regression.rs:2:43
[INFO] [stdout]   |
[INFO] [stdout] 2 | use ndarray::{Array1, Array2, ArrayView1, ArrayView2, Axis, NdFloat, stack, arr1, arr2};
[INFO] [stdout]   |                                           ^^^^^^^^^^                        ^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Array`, `arr1`, `arr2`
[INFO] [stdout]  --> src/machine_learning/logistic_regression.rs:1:15
[INFO] [stdout]   |
[INFO] [stdout] 1 | use ndarray::{Array, Array1, Array2, Axis, NdFloat, arr1, arr2, stack};
[INFO] [stdout]   |               ^^^^^                                 ^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs::File`
[INFO] [stdout]   --> src/machine_learning/logistic_regression.rs:82:5
[INFO] [stdout]    |
[INFO] [stdout] 82 | use std::fs::File;
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Read`
[INFO] [stdout]   --> src/machine_learning/logistic_regression.rs:83:5
[INFO] [stdout]    |
[INFO] [stdout] 83 | use std::io::Read;
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::path::Path`
[INFO] [stdout]   --> src/machine_learning/logistic_regression.rs:84:5
[INFO] [stdout]    |
[INFO] [stdout] 84 | use std::path::Path;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs::File`
[INFO] [stdout]    --> src/machine_learning/decision_tree.rs:249:5
[INFO] [stdout]     |
[INFO] [stdout] 249 | use std::fs::File;
[INFO] [stdout]     |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Read`
[INFO] [stdout]    --> src/machine_learning/decision_tree.rs:250:5
[INFO] [stdout]     |
[INFO] [stdout] 250 | use std::io::Read;
[INFO] [stdout]     |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::path::Path`
[INFO] [stdout]    --> src/machine_learning/decision_tree.rs:251:5
[INFO] [stdout]     |
[INFO] [stdout] 251 | use std::path::Path;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `arr1`, `arr2`
[INFO] [stdout]    --> src/machine_learning/neural_network.rs:139:16
[INFO] [stdout]     |
[INFO] [stdout] 139 | use::ndarray::{arr1, arr2};
[INFO] [stdout]     |                ^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs::File`
[INFO] [stdout]    --> src/machine_learning/neural_network.rs:140:5
[INFO] [stdout]     |
[INFO] [stdout] 140 | use std::fs::File;
[INFO] [stdout]     |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Read`
[INFO] [stdout]    --> src/machine_learning/neural_network.rs:141:5
[INFO] [stdout]     |
[INFO] [stdout] 141 | use std::io::Read;
[INFO] [stdout]     |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::path::Path`
[INFO] [stdout]    --> src/machine_learning/neural_network.rs:142:5
[INFO] [stdout]     |
[INFO] [stdout] 142 | use std::path::Path;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ArrayView2`
[INFO] [stdout]  --> src/machine_learning/linear_regression.rs:2:43
[INFO] [stdout]   |
[INFO] [stdout] 2 | use ndarray::{Array1, Array2, ArrayView1, ArrayView2, Axis, NdFloat, stack, arr1, arr2};
[INFO] [stdout]   |                                           ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `arr1`, `arr2`
[INFO] [stdout]  --> src/machine_learning/logistic_regression.rs:1:53
[INFO] [stdout]   |
[INFO] [stdout] 1 | use ndarray::{Array, Array1, Array2, Axis, NdFloat, arr1, arr2, stack};
[INFO] [stdout]   |                                                     ^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `weights`
[INFO] [stdout]   --> src/machine_learning/logistic_regression.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     weights: Array1<T>,
[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: `fit`
[INFO] [stdout]   --> src/machine_learning/logistic_regression.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 33 |     fn fit(&mut self, x: &Array2<T>, y: &Array1<T>, lr: T, epoch: usize, normalize: bool, intercept: bool, init: bool) {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `predict`
[INFO] [stdout]   --> src/machine_learning/logistic_regression.rs:64:8
[INFO] [stdout]    |
[INFO] [stdout] 64 |     fn predict(&mut self, x: &Array2<T>, normalize: bool, intercept: bool) -> Array1<T> {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 18 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.70s
[INFO] running `Command { std: "docker" "inspect" "6f3c325de390b4e13390c99f4c3605ddaf5827c540593df7f04603999fe59026", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6f3c325de390b4e13390c99f4c3605ddaf5827c540593df7f04603999fe59026", kill_on_drop: false }`
[INFO] [stdout] 6f3c325de390b4e13390c99f4c3605ddaf5827c540593df7f04603999fe59026