[INFO] cloning repository https://github.com/TsiaohanWang/my-machine-learning
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/TsiaohanWang/my-machine-learning" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTsiaohanWang%2Fmy-machine-learning", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTsiaohanWang%2Fmy-machine-learning'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 801ceae01bdce000632b91e7fd05d283dc44ad36
[INFO] checking TsiaohanWang/my-machine-learning against try#22cc29ba5b459fb386c0406b9baf3a49eb0fba39 for pr-146095
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTsiaohanWang%2Fmy-machine-learning" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/TsiaohanWang/my-machine-learning
[INFO] finished tweaking git repo https://github.com/TsiaohanWang/my-machine-learning
[INFO] tweaked toml for git repo https://github.com/TsiaohanWang/my-machine-learning written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/TsiaohanWang/my-machine-learning on toolchain 22cc29ba5b459fb386c0406b9baf3a49eb0fba39
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22cc29ba5b459fb386c0406b9baf3a49eb0fba39" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/TsiaohanWang/my-machine-learning already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22cc29ba5b459fb386c0406b9baf3a49eb0fba39" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+22cc29ba5b459fb386c0406b9baf3a49eb0fba39" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 409336d084799fbf381e736e3c1779a1148791d028f0d5ac90a0524f392d35d2
[INFO] running `Command { std: "docker" "start" "-a" "409336d084799fbf381e736e3c1779a1148791d028f0d5ac90a0524f392d35d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "409336d084799fbf381e736e3c1779a1148791d028f0d5ac90a0524f392d35d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "409336d084799fbf381e736e3c1779a1148791d028f0d5ac90a0524f392d35d2", kill_on_drop: false }`
[INFO] [stdout] 409336d084799fbf381e736e3c1779a1148791d028f0d5ac90a0524f392d35d2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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" "RUSTDOCFLAGS=--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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+22cc29ba5b459fb386c0406b9baf3a49eb0fba39" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 732a3a3139762d3c3de4a82f97bbb2d8ef826711cb72d82b00c9354b03dc5eac
[INFO] running `Command { std: "docker" "start" "-a" "732a3a3139762d3c3de4a82f97bbb2d8ef826711cb72d82b00c9354b03dc5eac", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling cc v1.2.41
[INFO] [stderr]     Checking crc32fast v1.5.0
[INFO] [stderr]     Checking getrandom v0.3.3
[INFO] [stderr]     Checking dirs-sys v0.5.0
[INFO] [stderr]     Checking gif v0.12.0
[INFO] [stderr]     Checking yeslogic-fontconfig-sys v6.0.0
[INFO] [stderr]     Checking pathfinder_geometry v0.5.1
[INFO] [stderr]     Checking dirs v6.0.0
[INFO] [stderr]     Checking flate2 v1.1.4
[INFO] [stderr]     Checking rand_core v0.9.3
[INFO] [stderr]     Checking rand_chacha v0.9.0
[INFO] [stderr]     Checking rand v0.9.2
[INFO] [stderr]     Checking png v0.17.16
[INFO] [stderr]     Checking chrono v0.4.42
[INFO] [stderr]     Checking rand_distr v0.5.1
[INFO] [stderr]    Compiling freetype-sys v0.20.1
[INFO] [stderr]     Checking image v0.24.9
[INFO] [stderr]    Compiling font-kit v0.14.3
[INFO] [stderr]     Checking plotters-bitmap v0.3.7
[INFO] [stderr]     Checking plotters v0.3.7
[INFO] [stderr]     Checking my_machine_learning v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `plotters::data`
[INFO] [stdout]  --> src/pseudo_dataset/pdg.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use plotters::data;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `plotters::data`
[INFO] [stdout]  --> src/pseudo_dataset/pdg.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use plotters::data;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `w_slope` is never read
[INFO] [stdout]   --> src/linear_regression/model.rs:78:32
[INFO] [stdout]    |
[INFO] [stdout] 78 |         let mut w_slope: f64 = 0.0;
[INFO] [stdout]    |                                ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `b_slope` is never read
[INFO] [stdout]   --> src/linear_regression/model.rs:79:32
[INFO] [stdout]    |
[INFO] [stdout] 79 |         let mut b_slope: f64 = 0.0;
[INFO] [stdout]    |                                ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `w_slope` is never read
[INFO] [stdout]   --> src/logistic_regression/model.rs:96:32
[INFO] [stdout]    |
[INFO] [stdout] 96 |         let mut w_slope: f64 = 0.0;
[INFO] [stdout]    |                                ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `b_slope` is never read
[INFO] [stdout]   --> src/logistic_regression/model.rs:97:32
[INFO] [stdout]    |
[INFO] [stdout] 97 |         let mut b_slope: f64 = 0.0;
[INFO] [stdout]    |                                ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/visualization/curve.rs:102:9
[INFO] [stdout]     |
[INFO] [stdout] 102 |     for i in 0..iteration {
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `precision` and `f1_score` are never used
[INFO] [stdout]    --> src/classification/model.rs:151:8
[INFO] [stdout]     |
[INFO] [stdout]  14 | impl ConfusMatrix1D {
[INFO] [stdout]     | ------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 151 |     fn precision(&self) -> f64 {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 158 |     fn f1_score(&self) -> f64 {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `EMPTY` is never used
[INFO] [stdout]   --> src/visualization/curve.rs:56:11
[INFO] [stdout]    |
[INFO] [stdout] 56 |     const EMPTY: char = ' ';
[INFO] [stdout]    |           ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/visualization/curve.rs:151:9
[INFO] [stdout]     |
[INFO] [stdout] 151 |         write_char_at(2, line, V_AXIS);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 151 |         let _ = write_char_at(2, line, V_AXIS);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/visualization/curve.rs:154:9
[INFO] [stdout]     |
[INFO] [stdout] 154 |         write_char_at(col, iteration + 1, H_AXIS);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 154 |         let _ = write_char_at(col, iteration + 1, H_AXIS);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/visualization/curve.rs:156:13
[INFO] [stdout]     |
[INFO] [stdout] 156 |             write_char_at(col, iteration + 1, ORIGIN);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 156 |             let _ = write_char_at(col, iteration + 1, ORIGIN);
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/visualization/curve.rs:160:9
[INFO] [stdout]     |
[INFO] [stdout] 160 |         write_char_at(px + 2, iteration + 1 - py, POINT);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 160 |         let _ = write_char_at(px + 2, iteration + 1 - py, POINT);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `my_machine_learning::linear_regression::LinrRegModel`
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use my_machine_learning::linear_regression::LinrRegModel;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `my_machine_learning::visualization::Precision`
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use my_machine_learning::visualization::Precision;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `classification::model::ConfusMatrix1D`
[INFO] [stdout]  --> src/main.rs:6:27
[INFO] [stdout]   |
[INFO] [stdout] 6 | use my_machine_learning::{classification::model::ConfusMatrix1D, pseudo_dataset::pdg};
[INFO] [stdout]   |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Normal`
[INFO] [stdout]   --> src/main.rs:10:32
[INFO] [stdout]    |
[INFO] [stdout] 10 | use rand_distr::{Distribution, Normal}; // Normal 和 Distribution 现在来自 rand_distr
[INFO] [stdout]    |                                ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Distribution`
[INFO] [stdout]   --> src/main.rs:10:18
[INFO] [stdout]    |
[INFO] [stdout] 10 | use rand_distr::{Distribution, Normal}; // Normal 和 Distribution 现在来自 rand_distr
[INFO] [stdout]    |                  ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `plot_roc_curve` is never used
[INFO] [stdout]   --> src/main.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn plot_roc_curve(
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `my_machine_learning::linear_regression::LinrRegModel`
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use my_machine_learning::linear_regression::LinrRegModel;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `my_machine_learning::visualization::Precision`
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use my_machine_learning::visualization::Precision;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `classification::model::ConfusMatrix1D`
[INFO] [stdout]  --> src/main.rs:6:27
[INFO] [stdout]   |
[INFO] [stdout] 6 | use my_machine_learning::{classification::model::ConfusMatrix1D, pseudo_dataset::pdg};
[INFO] [stdout]   |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Normal`
[INFO] [stdout]   --> src/main.rs:10:32
[INFO] [stdout]    |
[INFO] [stdout] 10 | use rand_distr::{Distribution, Normal}; // Normal 和 Distribution 现在来自 rand_distr
[INFO] [stdout]    |                                ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Distribution`
[INFO] [stdout]   --> src/main.rs:10:18
[INFO] [stdout]    |
[INFO] [stdout] 10 | use rand_distr::{Distribution, Normal}; // Normal 和 Distribution 现在来自 rand_distr
[INFO] [stdout]    |                  ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `plot_roc_curve` is never used
[INFO] [stdout]   --> src/main.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn plot_roc_curve(
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `w_slope` is never read
[INFO] [stdout]   --> src/linear_regression/model.rs:78:32
[INFO] [stdout]    |
[INFO] [stdout] 78 |         let mut w_slope: f64 = 0.0;
[INFO] [stdout]    |                                ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `b_slope` is never read
[INFO] [stdout]   --> src/linear_regression/model.rs:79:32
[INFO] [stdout]    |
[INFO] [stdout] 79 |         let mut b_slope: f64 = 0.0;
[INFO] [stdout]    |                                ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `w_slope` is never read
[INFO] [stdout]   --> src/logistic_regression/model.rs:96:32
[INFO] [stdout]    |
[INFO] [stdout] 96 |         let mut w_slope: f64 = 0.0;
[INFO] [stdout]    |                                ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `b_slope` is never read
[INFO] [stdout]   --> src/logistic_regression/model.rs:97:32
[INFO] [stdout]    |
[INFO] [stdout] 97 |         let mut b_slope: f64 = 0.0;
[INFO] [stdout]    |                                ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/visualization/curve.rs:102:9
[INFO] [stdout]     |
[INFO] [stdout] 102 |     for i in 0..iteration {
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `precision` and `f1_score` are never used
[INFO] [stdout]    --> src/classification/model.rs:151:8
[INFO] [stdout]     |
[INFO] [stdout]  14 | impl ConfusMatrix1D {
[INFO] [stdout]     | ------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 151 |     fn precision(&self) -> f64 {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 158 |     fn f1_score(&self) -> f64 {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `EMPTY` is never used
[INFO] [stdout]   --> src/visualization/curve.rs:56:11
[INFO] [stdout]    |
[INFO] [stdout] 56 |     const EMPTY: char = ' ';
[INFO] [stdout]    |           ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/visualization/curve.rs:151:9
[INFO] [stdout]     |
[INFO] [stdout] 151 |         write_char_at(2, line, V_AXIS);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 151 |         let _ = write_char_at(2, line, V_AXIS);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/visualization/curve.rs:154:9
[INFO] [stdout]     |
[INFO] [stdout] 154 |         write_char_at(col, iteration + 1, H_AXIS);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 154 |         let _ = write_char_at(col, iteration + 1, H_AXIS);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/visualization/curve.rs:156:13
[INFO] [stdout]     |
[INFO] [stdout] 156 |             write_char_at(col, iteration + 1, ORIGIN);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 156 |             let _ = write_char_at(col, iteration + 1, ORIGIN);
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/visualization/curve.rs:160:9
[INFO] [stdout]     |
[INFO] [stdout] 160 |         write_char_at(px + 2, iteration + 1 - py, POINT);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 160 |         let _ = write_char_at(px + 2, iteration + 1 - py, POINT);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.98s
[INFO] running `Command { std: "docker" "inspect" "732a3a3139762d3c3de4a82f97bbb2d8ef826711cb72d82b00c9354b03dc5eac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "732a3a3139762d3c3de4a82f97bbb2d8ef826711cb72d82b00c9354b03dc5eac", kill_on_drop: false }`
[INFO] [stdout] 732a3a3139762d3c3de4a82f97bbb2d8ef826711cb72d82b00c9354b03dc5eac
