[INFO] fetching crate simple_ml 0.3.2...
[INFO] testing simple_ml-0.3.2 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate simple_ml 0.3.2 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate simple_ml 0.3.2 on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate simple_ml 0.3.2
[INFO] finished tweaking crates.io crate simple_ml 0.3.2
[INFO] tweaked toml for crates.io crate simple_ml 0.3.2 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate simple_ml 0.3.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", 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] aaf360efdd8cd7e510c2c405096e1e1951ec0584f53505aef7b0abe934e4cde8
[INFO] running `Command { std: "docker" "start" "-a" "aaf360efdd8cd7e510c2c405096e1e1951ec0584f53505aef7b0abe934e4cde8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "aaf360efdd8cd7e510c2c405096e1e1951ec0584f53505aef7b0abe934e4cde8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aaf360efdd8cd7e510c2c405096e1e1951ec0584f53505aef7b0abe934e4cde8", kill_on_drop: false }`
[INFO] [stdout] aaf360efdd8cd7e510c2c405096e1e1951ec0584f53505aef7b0abe934e4cde8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5b6f655e0148d5baf5cd47e0d8d606cb687efba4b8d826d024fdeea791b8c815
[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" "5b6f655e0148d5baf5cd47e0d8d606cb687efba4b8d826d024fdeea791b8c815", kill_on_drop: false }`
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling rand v0.3.23
[INFO] [stderr]    Compiling libmath v0.2.1
[INFO] [stderr]    Compiling simple_ml v0.3.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/lib.rs:1858:13
[INFO] [stdout]      |
[INFO] [stdout] 1858 | /             (a - (actual.iter().fold(0., |a, b| a + b) / (actual.len() as f64))
[INFO] [stdout] 1859 | |                 * (a - (actual.iter().fold(0., |a, b| a + b) / (actual.len() as f64))))
[INFO] [stdout]      | |_______________________________________________________________________________________^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 1858 |             a - (actual.iter().fold(0., |a, b| a + b) / (actual.len() as f64))
[INFO] [stdout] 1859 |                 * (a - (actual.iter().fold(0., |a, b| a + b) / (actual.len() as f64)))
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `BTreeMap` is imported redundantly
[INFO] [stdout]     --> src/lib.rs:2522:13
[INFO] [stdout]      |
[INFO] [stdout] 2522 |         use std::collections::BTreeMap;
[INFO] [stdout]      |             ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 3712 | use std::collections::BTreeMap;
[INFO] [stdout]      |     -------------------------- the item `BTreeMap` is already imported here
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `BTreeMap` is imported redundantly
[INFO] [stdout]     --> src/lib.rs:2553:13
[INFO] [stdout]      |
[INFO] [stdout] 2553 |         use std::collections::BTreeMap;
[INFO] [stdout]      |             ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 3712 | use std::collections::BTreeMap;
[INFO] [stdout]      |     -------------------------- the item `BTreeMap` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/lib.rs:3774:9
[INFO] [stdout]      |
[INFO] [stdout] 3774 |         (actual / larger as f64)
[INFO] [stdout]      |         ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `new_mean` is never read
[INFO] [stdout]    --> src/lib.rs:877:13
[INFO] [stdout]     |
[INFO] [stdout] 877 |         let mut new_mean: Vec<Vec<f64>> = vec![];
[INFO] [stdout]     |             ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X` should have a snake case name
[INFO] [stdout]    --> src/lib.rs:496:13
[INFO] [stdout]     |
[INFO] [stdout] 496 |         let X = [&b0_vec[..], &x[..]].concat(); // [1,1,1...,1,1,1]+X
[INFO] [stdout]     |             ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/lib.rs:1858:13
[INFO] [stdout]      |
[INFO] [stdout] 1858 | /             (a - (actual.iter().fold(0., |a, b| a + b) / (actual.len() as f64))
[INFO] [stdout] 1859 | |                 * (a - (actual.iter().fold(0., |a, b| a + b) / (actual.len() as f64))))
[INFO] [stdout]      | |_______________________________________________________________________________________^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 1858 |             a - (actual.iter().fold(0., |a, b| a + b) / (actual.len() as f64))
[INFO] [stdout] 1859 |                 * (a - (actual.iter().fold(0., |a, b| a + b) / (actual.len() as f64)))
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `BTreeMap` is imported redundantly
[INFO] [stdout]     --> src/lib.rs:2522:13
[INFO] [stdout]      |
[INFO] [stdout] 2522 |         use std::collections::BTreeMap;
[INFO] [stdout]      |             ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 3712 | use std::collections::BTreeMap;
[INFO] [stdout]      |     -------------------------- the item `BTreeMap` is already imported here
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `BTreeMap` is imported redundantly
[INFO] [stdout]     --> src/lib.rs:2553:13
[INFO] [stdout]      |
[INFO] [stdout] 2553 |         use std::collections::BTreeMap;
[INFO] [stdout]      |             ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 3712 | use std::collections::BTreeMap;
[INFO] [stdout]      |     -------------------------- the item `BTreeMap` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/lib.rs:3774:9
[INFO] [stdout]      |
[INFO] [stdout] 3774 |         (actual / larger as f64)
[INFO] [stdout]      |         ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `HashMap` is imported redundantly
[INFO] [stdout]    --> src/main.rs:567:9
[INFO] [stdout]     |
[INFO] [stdout] 3   | use std::collections::HashMap;
[INFO] [stdout]     |     ------------------------- the item `HashMap` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 567 |     use std::collections::HashMap;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `weights`
[INFO] [stdout]    --> src/main.rs:960:9
[INFO] [stdout]     |
[INFO] [stdout] 960 |     let weights = svm.fit();
[INFO] [stdout]     |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_weights`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `new_mean` is never read
[INFO] [stdout]    --> src/lib.rs:877:13
[INFO] [stdout]     |
[INFO] [stdout] 877 |         let mut new_mean: Vec<Vec<f64>> = vec![];
[INFO] [stdout]     |             ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `impute_string`
[INFO] [stdout]     --> src/lib.rs:1401:8
[INFO] [stdout]      |
[INFO] [stdout] 1401 | pub fn impute_string<'a>(list: &'a mut Vec<String>, impute_with: &'a str) -> Vec<&'a str> {
[INFO] [stdout]      |        ^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `logistic_function_f`
[INFO] [stdout]     --> src/lib.rs:1445:8
[INFO] [stdout]      |
[INFO] [stdout] 1445 | pub fn logistic_function_f(matrix: &Vec<Vec<f64>>, beta: &Vec<Vec<f64>>) -> Vec<Vec<f64>> {
[INFO] [stdout]      |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `log_gradient_f`
[INFO] [stdout]     --> src/lib.rs:1462:8
[INFO] [stdout]      |
[INFO] [stdout] 1462 | pub fn log_gradient_f(
[INFO] [stdout]      |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `logistic_predict`
[INFO] [stdout]     --> src/lib.rs:1507:8
[INFO] [stdout]      |
[INFO] [stdout] 1507 | pub fn logistic_predict(matrix1: &Vec<Vec<f64>>, beta: &Vec<Vec<f64>>) -> Vec<Vec<f64>> {
[INFO] [stdout]      |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `best_fit_line`
[INFO] [stdout]     --> src/lib.rs:4568:8
[INFO] [stdout]      |
[INFO] [stdout] 4568 | pub fn best_fit_line(x: &Vec<f64>, y: &Vec<f64>) -> (f64, f64) {
[INFO] [stdout]      |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X` should have a snake case name
[INFO] [stdout]    --> src/lib.rs:496:13
[INFO] [stdout]     |
[INFO] [stdout] 496 |         let X = [&b0_vec[..], &x[..]].concat(); // [1,1,1...,1,1,1]+X
[INFO] [stdout]     |             ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 14 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.34s
[INFO] running `Command { std: "docker" "inspect" "5b6f655e0148d5baf5cd47e0d8d606cb687efba4b8d826d024fdeea791b8c815", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b6f655e0148d5baf5cd47e0d8d606cb687efba4b8d826d024fdeea791b8c815", kill_on_drop: false }`
[INFO] [stdout] 5b6f655e0148d5baf5cd47e0d8d606cb687efba4b8d826d024fdeea791b8c815
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+beta-2021-01-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 92e9e2c98b1306eda27dcbc4e424d7b880aefa2d8c57ecbc0abb136bcee6c259
[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" "92e9e2c98b1306eda27dcbc4e424d7b880aefa2d8c57ecbc0abb136bcee6c259", kill_on_drop: false }`
[INFO] [stderr]    Compiling simple_ml v0.3.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/lib.rs:1858:13
[INFO] [stdout]      |
[INFO] [stdout] 1858 | /             (a - (actual.iter().fold(0., |a, b| a + b) / (actual.len() as f64))
[INFO] [stdout] 1859 | |                 * (a - (actual.iter().fold(0., |a, b| a + b) / (actual.len() as f64))))
[INFO] [stdout]      | |_______________________________________________________________________________________^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 1858 |             a - (actual.iter().fold(0., |a, b| a + b) / (actual.len() as f64))
[INFO] [stdout] 1859 |                 * (a - (actual.iter().fold(0., |a, b| a + b) / (actual.len() as f64)))
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `BTreeMap` is imported redundantly
[INFO] [stdout]     --> src/lib.rs:2522:13
[INFO] [stdout]      |
[INFO] [stdout] 2522 |         use std::collections::BTreeMap;
[INFO] [stdout]      |             ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 3712 | use std::collections::BTreeMap;
[INFO] [stdout]      |     -------------------------- the item `BTreeMap` is already imported here
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `BTreeMap` is imported redundantly
[INFO] [stdout]     --> src/lib.rs:2553:13
[INFO] [stdout]      |
[INFO] [stdout] 2553 |         use std::collections::BTreeMap;
[INFO] [stdout]      |             ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 3712 | use std::collections::BTreeMap;
[INFO] [stdout]      |     -------------------------- the item `BTreeMap` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/lib.rs:3774:9
[INFO] [stdout]      |
[INFO] [stdout] 3774 |         (actual / larger as f64)
[INFO] [stdout]      |         ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `new_mean` is never read
[INFO] [stdout]    --> src/lib.rs:877:13
[INFO] [stdout]     |
[INFO] [stdout] 877 |         let mut new_mean: Vec<Vec<f64>> = vec![];
[INFO] [stdout]     |             ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X` should have a snake case name
[INFO] [stdout]    --> src/lib.rs:496:13
[INFO] [stdout]     |
[INFO] [stdout] 496 |         let X = [&b0_vec[..], &x[..]].concat(); // [1,1,1...,1,1,1]+X
[INFO] [stdout]     |             ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/lib.rs:1858:13
[INFO] [stdout]      |
[INFO] [stdout] 1858 | /             (a - (actual.iter().fold(0., |a, b| a + b) / (actual.len() as f64))
[INFO] [stdout] 1859 | |                 * (a - (actual.iter().fold(0., |a, b| a + b) / (actual.len() as f64))))
[INFO] [stdout]      | |_______________________________________________________________________________________^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 1858 |             a - (actual.iter().fold(0., |a, b| a + b) / (actual.len() as f64))
[INFO] [stdout] 1859 |                 * (a - (actual.iter().fold(0., |a, b| a + b) / (actual.len() as f64)))
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `BTreeMap` is imported redundantly
[INFO] [stdout]     --> src/lib.rs:2522:13
[INFO] [stdout]      |
[INFO] [stdout] 2522 |         use std::collections::BTreeMap;
[INFO] [stdout]      |             ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 3712 | use std::collections::BTreeMap;
[INFO] [stdout]      |     -------------------------- the item `BTreeMap` is already imported here
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `BTreeMap` is imported redundantly
[INFO] [stdout]     --> src/lib.rs:2553:13
[INFO] [stdout]      |
[INFO] [stdout] 2553 |         use std::collections::BTreeMap;
[INFO] [stdout]      |             ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 3712 | use std::collections::BTreeMap;
[INFO] [stdout]      |     -------------------------- the item `BTreeMap` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/lib.rs:3774:9
[INFO] [stdout]      |
[INFO] [stdout] 3774 |         (actual / larger as f64)
[INFO] [stdout]      |         ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/lib.rs:1858:13
[INFO] [stdout]      |
[INFO] [stdout] 1858 | /             (a - (actual.iter().fold(0., |a, b| a + b) / (actual.len() as f64))
[INFO] [stdout] 1859 | |                 * (a - (actual.iter().fold(0., |a, b| a + b) / (actual.len() as f64))))
[INFO] [stdout]      | |_______________________________________________________________________________________^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 1858 |             a - (actual.iter().fold(0., |a, b| a + b) / (actual.len() as f64))
[INFO] [stdout] 1859 |                 * (a - (actual.iter().fold(0., |a, b| a + b) / (actual.len() as f64)))
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `BTreeMap` is imported redundantly
[INFO] [stdout]     --> src/lib.rs:2522:13
[INFO] [stdout]      |
[INFO] [stdout] 2522 |         use std::collections::BTreeMap;
[INFO] [stdout]      |             ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 3712 | use std::collections::BTreeMap;
[INFO] [stdout]      |     -------------------------- the item `BTreeMap` is already imported here
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `BTreeMap` is imported redundantly
[INFO] [stdout]     --> src/lib.rs:2553:13
[INFO] [stdout]      |
[INFO] [stdout] 2553 |         use std::collections::BTreeMap;
[INFO] [stdout]      |             ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 3712 | use std::collections::BTreeMap;
[INFO] [stdout]      |     -------------------------- the item `BTreeMap` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/lib.rs:3774:9
[INFO] [stdout]      |
[INFO] [stdout] 3774 |         (actual / larger as f64)
[INFO] [stdout]      |         ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `HashMap` is imported redundantly
[INFO] [stdout]    --> src/main.rs:567:9
[INFO] [stdout]     |
[INFO] [stdout] 3   | use std::collections::HashMap;
[INFO] [stdout]     |     ------------------------- the item `HashMap` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 567 |     use std::collections::HashMap;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `new_mean` is never read
[INFO] [stdout]    --> src/lib.rs:877:13
[INFO] [stdout]     |
[INFO] [stdout] 877 |         let mut new_mean: Vec<Vec<f64>> = vec![];
[INFO] [stdout]     |             ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `weights`
[INFO] [stdout]    --> src/main.rs:960:9
[INFO] [stdout]     |
[INFO] [stdout] 960 |     let weights = svm.fit();
[INFO] [stdout]     |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_weights`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `new_mean` is never read
[INFO] [stdout]    --> src/lib.rs:877:13
[INFO] [stdout]     |
[INFO] [stdout] 877 |         let mut new_mean: Vec<Vec<f64>> = vec![];
[INFO] [stdout]     |             ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X` should have a snake case name
[INFO] [stdout]    --> src/lib.rs:496:13
[INFO] [stdout]     |
[INFO] [stdout] 496 |         let X = [&b0_vec[..], &x[..]].concat(); // [1,1,1...,1,1,1]+X
[INFO] [stdout]     |             ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `impute_string`
[INFO] [stdout]     --> src/lib.rs:1401:8
[INFO] [stdout]      |
[INFO] [stdout] 1401 | pub fn impute_string<'a>(list: &'a mut Vec<String>, impute_with: &'a str) -> Vec<&'a str> {
[INFO] [stdout]      |        ^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `logistic_function_f`
[INFO] [stdout]     --> src/lib.rs:1445:8
[INFO] [stdout]      |
[INFO] [stdout] 1445 | pub fn logistic_function_f(matrix: &Vec<Vec<f64>>, beta: &Vec<Vec<f64>>) -> Vec<Vec<f64>> {
[INFO] [stdout]      |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `log_gradient_f`
[INFO] [stdout]     --> src/lib.rs:1462:8
[INFO] [stdout]      |
[INFO] [stdout] 1462 | pub fn log_gradient_f(
[INFO] [stdout]      |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `logistic_predict`
[INFO] [stdout]     --> src/lib.rs:1507:8
[INFO] [stdout]      |
[INFO] [stdout] 1507 | pub fn logistic_predict(matrix1: &Vec<Vec<f64>>, beta: &Vec<Vec<f64>>) -> Vec<Vec<f64>> {
[INFO] [stdout]      |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `best_fit_line`
[INFO] [stdout]     --> src/lib.rs:4568:8
[INFO] [stdout]      |
[INFO] [stdout] 4568 | pub fn best_fit_line(x: &Vec<f64>, y: &Vec<f64>) -> (f64, f64) {
[INFO] [stdout]      |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X` should have a snake case name
[INFO] [stdout]    --> src/lib.rs:496:13
[INFO] [stdout]     |
[INFO] [stdout] 496 |         let X = [&b0_vec[..], &x[..]].concat(); // [1,1,1...,1,1,1]+X
[INFO] [stdout]     |             ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 14 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.21s
[INFO] running `Command { std: "docker" "inspect" "92e9e2c98b1306eda27dcbc4e424d7b880aefa2d8c57ecbc0abb136bcee6c259", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "92e9e2c98b1306eda27dcbc4e424d7b880aefa2d8c57ecbc0abb136bcee6c259", kill_on_drop: false }`
[INFO] [stdout] 92e9e2c98b1306eda27dcbc4e424d7b880aefa2d8c57ecbc0abb136bcee6c259
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+beta-2021-01-01" "test" "--frozen", 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] 62945bdfce433d36f5c2d17fae55b914e650d50ddf9dac1cc55b9acf7bb6e0f3
[INFO] running `Command { std: "docker" "start" "-a" "62945bdfce433d36f5c2d17fae55b914e650d50ddf9dac1cc55b9acf7bb6e0f3", kill_on_drop: false }`
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/lib.rs:1858:13
[INFO] [stderr]      |
[INFO] [stderr] 1858 | /             (a - (actual.iter().fold(0., |a, b| a + b) / (actual.len() as f64))
[INFO] [stderr] 1859 | |                 * (a - (actual.iter().fold(0., |a, b| a + b) / (actual.len() as f64))))
[INFO] [stderr]      | |_______________________________________________________________________________________^
[INFO] [stderr]      |
[INFO] [stderr]      = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]      |
[INFO] [stderr] 1858 |             a - (actual.iter().fold(0., |a, b| a + b) / (actual.len() as f64))
[INFO] [stderr] 1859 |                 * (a - (actual.iter().fold(0., |a, b| a + b) / (actual.len() as f64)))
[INFO] [stderr]      |
[INFO] [stderr] 
[INFO] [stderr] warning: the item `BTreeMap` is imported redundantly
[INFO] [stderr]     --> src/lib.rs:2522:13
[INFO] [stderr]      |
[INFO] [stderr] 2522 |         use std::collections::BTreeMap;
[INFO] [stderr]      |             ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 3712 | use std::collections::BTreeMap;
[INFO] [stderr]      |     -------------------------- the item `BTreeMap` is already imported here
[INFO] [stderr]      |
[INFO] [stderr]      = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the item `BTreeMap` is imported redundantly
[INFO] [stderr]     --> src/lib.rs:2553:13
[INFO] [stderr]      |
[INFO] [stderr] 2553 |         use std::collections::BTreeMap;
[INFO] [stderr]      |             ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 3712 | use std::collections::BTreeMap;
[INFO] [stderr]      |     -------------------------- the item `BTreeMap` is already imported here
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/lib.rs:3774:9
[INFO] [stderr]      |
[INFO] [stderr] 3774 |         (actual / larger as f64)
[INFO] [stderr]      |         ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `new_mean` is never read
[INFO] [stderr]    --> src/lib.rs:877:13
[INFO] [stderr]     |
[INFO] [stderr] 877 |         let mut new_mean: Vec<Vec<f64>> = vec![];
[INFO] [stderr]     |             ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: variable `X` should have a snake case name
[INFO] [stderr]    --> src/lib.rs:496:13
[INFO] [stderr]     |
[INFO] [stderr] 496 |         let X = [&b0_vec[..], &x[..]].concat(); // [1,1,1...,1,1,1]+X
[INFO] [stderr]     |             ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 6 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/lib.rs:1858:13
[INFO] [stderr]      |
[INFO] [stderr] 1858 | /             (a - (actual.iter().fold(0., |a, b| a + b) / (actual.len() as f64))
[INFO] [stderr] 1859 | |                 * (a - (actual.iter().fold(0., |a, b| a + b) / (actual.len() as f64))))
[INFO] [stderr]      | |_______________________________________________________________________________________^
[INFO] [stderr]      |
[INFO] [stderr]      = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]      |
[INFO] [stderr] 1858 |             a - (actual.iter().fold(0., |a, b| a + b) / (actual.len() as f64))
[INFO] [stderr] 1859 |                 * (a - (actual.iter().fold(0., |a, b| a + b) / (actual.len() as f64)))
[INFO] [stderr]      |
[INFO] [stderr] 
[INFO] [stderr] warning: the item `BTreeMap` is imported redundantly
[INFO] [stderr]     --> src/lib.rs:2522:13
[INFO] [stderr]      |
[INFO] [stderr] 2522 |         use std::collections::BTreeMap;
[INFO] [stderr]      |             ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 3712 | use std::collections::BTreeMap;
[INFO] [stderr]      |     -------------------------- the item `BTreeMap` is already imported here
[INFO] [stderr]      |
[INFO] [stderr]      = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the item `BTreeMap` is imported redundantly
[INFO] [stderr]     --> src/lib.rs:2553:13
[INFO] [stderr]      |
[INFO] [stderr] 2553 |         use std::collections::BTreeMap;
[INFO] [stderr]      |             ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 3712 | use std::collections::BTreeMap;
[INFO] [stderr]      |     -------------------------- the item `BTreeMap` is already imported here
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/lib.rs:3774:9
[INFO] [stderr]      |
[INFO] [stderr] 3774 |         (actual / larger as f64)
[INFO] [stderr]      |         ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `new_mean` is never read
[INFO] [stderr]    --> src/lib.rs:877:13
[INFO] [stderr]     |
[INFO] [stderr] 877 |         let mut new_mean: Vec<Vec<f64>> = vec![];
[INFO] [stderr]     |             ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: variable `X` should have a snake case name
[INFO] [stderr]    --> src/lib.rs:496:13
[INFO] [stderr]     |
[INFO] [stderr] 496 |         let X = [&b0_vec[..], &x[..]].concat(); // [1,1,1...,1,1,1]+X
[INFO] [stderr]     |             ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 6 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/lib.rs:1858:13
[INFO] [stderr]      |
[INFO] [stderr] 1858 | /             (a - (actual.iter().fold(0., |a, b| a + b) / (actual.len() as f64))
[INFO] [stderr] 1859 | |                 * (a - (actual.iter().fold(0., |a, b| a + b) / (actual.len() as f64))))
[INFO] [stderr]      | |_______________________________________________________________________________________^
[INFO] [stderr]      |
[INFO] [stderr]      = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]      |
[INFO] [stderr] 1858 |             a - (actual.iter().fold(0., |a, b| a + b) / (actual.len() as f64))
[INFO] [stderr] 1859 |                 * (a - (actual.iter().fold(0., |a, b| a + b) / (actual.len() as f64)))
[INFO] [stderr]      |
[INFO] [stderr] 
[INFO] [stderr] warning: the item `BTreeMap` is imported redundantly
[INFO] [stderr]     --> src/lib.rs:2522:13
[INFO] [stderr]      |
[INFO] [stderr] 2522 |         use std::collections::BTreeMap;
[INFO] [stderr]      |             ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 3712 | use std::collections::BTreeMap;
[INFO] [stderr]      |     -------------------------- the item `BTreeMap` is already imported here
[INFO] [stderr]      |
[INFO] [stderr]      = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the item `BTreeMap` is imported redundantly
[INFO] [stderr]     --> src/lib.rs:2553:13
[INFO] [stderr]      |
[INFO] [stderr] 2553 |         use std::collections::BTreeMap;
[INFO] [stderr]      |             ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 3712 | use std::collections::BTreeMap;
[INFO] [stderr]      |     -------------------------- the item `BTreeMap` is already imported here
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/lib.rs:3774:9
[INFO] [stderr]      |
[INFO] [stderr] 3774 |         (actual / larger as f64)
[INFO] [stderr]      |         ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::HashMap`
[INFO] [stderr]  --> src/main.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::collections::HashMap;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the item `HashMap` is imported redundantly
[INFO] [stderr]    --> src/main.rs:567:9
[INFO] [stderr]     |
[INFO] [stderr] 3   | use std::collections::HashMap;
[INFO] [stderr]     |     ------------------------- the item `HashMap` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 567 |     use std::collections::HashMap;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `weights`
[INFO] [stderr]    --> src/main.rs:960:9
[INFO] [stderr]     |
[INFO] [stderr] 960 |     let weights = svm.fit();
[INFO] [stderr]     |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_weights`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `new_mean` is never read
[INFO] [stderr]    --> src/lib.rs:877:13
[INFO] [stderr]     |
[INFO] [stderr] 877 |         let mut new_mean: Vec<Vec<f64>> = vec![];
[INFO] [stderr]     |             ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `impute_string`
[INFO] [stderr]     --> src/lib.rs:1401:8
[INFO] [stderr]      |
[INFO] [stderr] 1401 | pub fn impute_string<'a>(list: &'a mut Vec<String>, impute_with: &'a str) -> Vec<&'a str> {
[INFO] [stderr]      |        ^^^^^^^^^^^^^
[INFO] [stderr]      |
[INFO] [stderr]      = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `logistic_function_f`
[INFO] [stderr]     --> src/lib.rs:1445:8
[INFO] [stderr]      |
[INFO] [stderr] 1445 | pub fn logistic_function_f(matrix: &Vec<Vec<f64>>, beta: &Vec<Vec<f64>>) -> Vec<Vec<f64>> {
[INFO] [stderr]      |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `log_gradient_f`
[INFO] [stderr]     --> src/lib.rs:1462:8
[INFO] [stderr]      |
[INFO] [stderr] 1462 | pub fn log_gradient_f(
[INFO] [stderr]      |        ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `logistic_predict`
[INFO] [stderr]     --> src/lib.rs:1507:8
[INFO] [stderr]      |
[INFO] [stderr] 1507 | pub fn logistic_predict(matrix1: &Vec<Vec<f64>>, beta: &Vec<Vec<f64>>) -> Vec<Vec<f64>> {
[INFO] [stderr]      |        ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `best_fit_line`
[INFO] [stderr]     --> src/lib.rs:4568:8
[INFO] [stderr]      |
[INFO] [stderr] 4568 | pub fn best_fit_line(x: &Vec<f64>, y: &Vec<f64>) -> (f64, f64) {
[INFO] [stderr]      |        ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable `X` should have a snake case name
[INFO] [stderr]    --> src/lib.rs:496:13
[INFO] [stderr]     |
[INFO] [stderr] 496 |         let X = [&b0_vec[..], &x[..]].concat(); // [1,1,1...,1,1,1]+X
[INFO] [stderr]     |             ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 14 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/simple_ml-47ba1665d1511340
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/simple_ml-411ebd2c059cde88
[INFO] [stdout] running 0 tests
[INFO] [stderr]    Doc-tests simple_ml
[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] [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] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> /opt/rustwide/workdir/src/lib.rs:1858:13
[INFO] [stderr]      |
[INFO] [stderr] 1858 | /             (a - (actual.iter().fold(0., |a, b| a + b) / (actual.len() as f64))
[INFO] [stderr] 1859 | |                 * (a - (actual.iter().fold(0., |a, b| a + b) / (actual.len() as f64))))
[INFO] [stderr]      | |_______________________________________________________________________________________^
[INFO] [stderr]      |
[INFO] [stderr]      = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]      |
[INFO] [stderr] 1858 |             a - (actual.iter().fold(0., |a, b| a + b) / (actual.len() as f64))
[INFO] [stderr] 1859 |                 * (a - (actual.iter().fold(0., |a, b| a + b) / (actual.len() as f64)))
[INFO] [stderr]      |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> /opt/rustwide/workdir/src/lib.rs:3774:9
[INFO] [stderr]      |
[INFO] [stderr] 3774 |         (actual / larger as f64)
[INFO] [stderr]      |         ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[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" "62945bdfce433d36f5c2d17fae55b914e650d50ddf9dac1cc55b9acf7bb6e0f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "62945bdfce433d36f5c2d17fae55b914e650d50ddf9dac1cc55b9acf7bb6e0f3", kill_on_drop: false }`
[INFO] [stdout] 62945bdfce433d36f5c2d17fae55b914e650d50ddf9dac1cc55b9acf7bb6e0f3