[INFO] cloning repository https://github.com/SamuelDAdams/xtitc
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/SamuelDAdams/xtitc" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSamuelDAdams%2Fxtitc", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSamuelDAdams%2Fxtitc'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] cb58395e6d9f15db11c094c4fff2827b72500705
[INFO] checking SamuelDAdams/xtitc/cb58395e6d9f15db11c094c4fff2827b72500705 against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSamuelDAdams%2Fxtitc" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/SamuelDAdams/xtitc on toolchain ab869e094a907cc5d19b4080f22eccaf347f1f95
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/SamuelDAdams/xtitc
[INFO] finished tweaking git repo https://github.com/SamuelDAdams/xtitc
[INFO] tweaked toml for git repo https://github.com/SamuelDAdams/xtitc written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/SamuelDAdams/xtitc 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" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded az v1.1.1
[INFO] [stderr]   Downloaded lexical-core v0.7.5
[INFO] [stderr]   Downloaded fixed v1.7.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e62e6783961078372a6ad0de279354e9afffb77b2643b1cccc7154d37ebabdbe
[INFO] running `Command { std: "docker" "start" "-a" "e62e6783961078372a6ad0de279354e9afffb77b2643b1cccc7154d37ebabdbe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e62e6783961078372a6ad0de279354e9afffb77b2643b1cccc7154d37ebabdbe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e62e6783961078372a6ad0de279354e9afffb77b2643b1cccc7154d37ebabdbe", kill_on_drop: false }`
[INFO] [stdout] e62e6783961078372a6ad0de279354e9afffb77b2643b1cccc7154d37ebabdbe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1f12ea9b702ca368a6664630ce2aea633d8044d25c2bb94c02c109db07c17f8e
[INFO] running `Command { std: "docker" "start" "-a" "1f12ea9b702ca368a6664630ce2aea633d8044d25c2bb94c02c109db07c17f8e", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling serde v1.0.125
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling lexical-core v0.7.5
[INFO] [stderr]    Compiling libc v0.2.93
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]     Checking arrayvec v0.5.2
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking regex-syntax v0.6.23
[INFO] [stderr]    Compiling az v1.1.1
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]    Compiling fixed v1.7.0
[INFO] [stderr]     Checking serde v0.8.23
[INFO] [stderr]     Checking linked-hash-map v0.5.4
[INFO] [stderr]     Checking rust-ini v0.13.0
[INFO] [stderr]     Checking half v1.7.1
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]     Checking regex-automata v0.1.9
[INFO] [stderr]     Checking aho-corasick v0.7.15
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking regex v1.4.5
[INFO] [stderr]     Checking serde-hjson v0.9.1
[INFO] [stderr]     Checking toml v0.5.8
[INFO] [stderr]     Checking bstr v0.2.15
[INFO] [stderr]     Checking csv v1.1.6
[INFO] [stderr]     Checking config v0.11.0
[INFO] [stderr]     Checking xtitc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `FixedI64` and `types::extra::U10`
[INFO] [stdout]  --> src/util.rs:3:13
[INFO] [stdout]   |
[INFO] [stdout] 3 | use fixed::{types::extra::U10, FixedI64};
[INFO] [stdout]   |             ^^^^^^^^^^^^^^^^^  ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs`
[INFO] [stdout]  --> src/util.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::fs;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs`
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::fs;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs::File`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::fs::File;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::prelude::*`
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::io::prelude::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around index expression
[INFO] [stdout]    --> src/main.rs:876:62
[INFO] [stdout]     |
[INFO] [stdout] 876 |                     new_numerators.push(forgotten_numerators[(v/divisor)]);
[INFO] [stdout]     |                                                              ^         ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 876 -                     new_numerators.push(forgotten_numerators[(v/divisor)]);
[INFO] [stdout] 876 +                     new_numerators.push(forgotten_numerators[v/divisor]);
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around index expression
[INFO] [stdout]    --> src/main.rs:877:66
[INFO] [stdout]     |
[INFO] [stdout] 877 |                     new_denominators.push(forgotten_denominators[(v/divisor)]);
[INFO] [stdout]     |                                                                  ^         ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 877 -                     new_denominators.push(forgotten_denominators[(v/divisor)]);
[INFO] [stdout] 877 +                     new_denominators.push(forgotten_denominators[v/divisor]);
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around index expression
[INFO] [stdout]     --> src/main.rs:1346:66
[INFO] [stdout]      |
[INFO] [stdout] 1346 |                         new_numerators.push(forgotten_numerators[(v/divisor)]);
[INFO] [stdout]      |                                                                  ^         ^
[INFO] [stdout]      |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 1346 -                         new_numerators.push(forgotten_numerators[(v/divisor)]);
[INFO] [stdout] 1346 +                         new_numerators.push(forgotten_numerators[v/divisor]);
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around index expression
[INFO] [stdout]     --> src/main.rs:1347:70
[INFO] [stdout]      |
[INFO] [stdout] 1347 |                         new_denominators.push(forgotten_denominators[(v/divisor)]);
[INFO] [stdout]      |                                                                      ^         ^
[INFO] [stdout]      |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 1347 -                         new_denominators.push(forgotten_denominators[(v/divisor)]);
[INFO] [stdout] 1347 +                         new_denominators.push(forgotten_denominators[v/divisor]);
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around index expression
[INFO] [stdout]     --> src/main.rs:1982:62
[INFO] [stdout]      |
[INFO] [stdout] 1982 |                     new_numerators.push(forgotten_numerators[(v/divisor)]);
[INFO] [stdout]      |                                                              ^         ^
[INFO] [stdout]      |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 1982 -                     new_numerators.push(forgotten_numerators[(v/divisor)]);
[INFO] [stdout] 1982 +                     new_numerators.push(forgotten_numerators[v/divisor]);
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around index expression
[INFO] [stdout]     --> src/main.rs:1983:66
[INFO] [stdout]      |
[INFO] [stdout] 1983 |                     new_denominators.push(forgotten_denominators[(v/divisor)]);
[INFO] [stdout]      |                                                                  ^         ^
[INFO] [stdout]      |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 1983 -                     new_denominators.push(forgotten_denominators[(v/divisor)]);
[INFO] [stdout] 1983 +                     new_denominators.push(forgotten_denominators[v/divisor]);
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `FixedI64` and `types::extra::U10`
[INFO] [stdout]  --> src/util.rs:3:13
[INFO] [stdout]   |
[INFO] [stdout] 3 | use fixed::{types::extra::U10, FixedI64};
[INFO] [stdout]   |             ^^^^^^^^^^^^^^^^^  ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs`
[INFO] [stdout]  --> src/util.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::fs;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs`
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::fs;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs::File`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::fs::File;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::prelude::*`
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::io::prelude::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around index expression
[INFO] [stdout]    --> src/main.rs:876:62
[INFO] [stdout]     |
[INFO] [stdout] 876 |                     new_numerators.push(forgotten_numerators[(v/divisor)]);
[INFO] [stdout]     |                                                              ^         ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 876 -                     new_numerators.push(forgotten_numerators[(v/divisor)]);
[INFO] [stdout] 876 +                     new_numerators.push(forgotten_numerators[v/divisor]);
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around index expression
[INFO] [stdout]    --> src/main.rs:877:66
[INFO] [stdout]     |
[INFO] [stdout] 877 |                     new_denominators.push(forgotten_denominators[(v/divisor)]);
[INFO] [stdout]     |                                                                  ^         ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 877 -                     new_denominators.push(forgotten_denominators[(v/divisor)]);
[INFO] [stdout] 877 +                     new_denominators.push(forgotten_denominators[v/divisor]);
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around index expression
[INFO] [stdout]     --> src/main.rs:1346:66
[INFO] [stdout]      |
[INFO] [stdout] 1346 |                         new_numerators.push(forgotten_numerators[(v/divisor)]);
[INFO] [stdout]      |                                                                  ^         ^
[INFO] [stdout]      |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 1346 -                         new_numerators.push(forgotten_numerators[(v/divisor)]);
[INFO] [stdout] 1346 +                         new_numerators.push(forgotten_numerators[v/divisor]);
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around index expression
[INFO] [stdout]     --> src/main.rs:1347:70
[INFO] [stdout]      |
[INFO] [stdout] 1347 |                         new_denominators.push(forgotten_denominators[(v/divisor)]);
[INFO] [stdout]      |                                                                      ^         ^
[INFO] [stdout]      |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 1347 -                         new_denominators.push(forgotten_denominators[(v/divisor)]);
[INFO] [stdout] 1347 +                         new_denominators.push(forgotten_denominators[v/divisor]);
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around index expression
[INFO] [stdout]     --> src/main.rs:1982:62
[INFO] [stdout]      |
[INFO] [stdout] 1982 |                     new_numerators.push(forgotten_numerators[(v/divisor)]);
[INFO] [stdout]      |                                                              ^         ^
[INFO] [stdout]      |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 1982 -                     new_numerators.push(forgotten_numerators[(v/divisor)]);
[INFO] [stdout] 1982 +                     new_numerators.push(forgotten_numerators[v/divisor]);
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around index expression
[INFO] [stdout]     --> src/main.rs:1983:66
[INFO] [stdout]      |
[INFO] [stdout] 1983 |                     new_denominators.push(forgotten_denominators[(v/divisor)]);
[INFO] [stdout]      |                                                                  ^         ^
[INFO] [stdout]      |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 1983 -                     new_denominators.push(forgotten_denominators[(v/divisor)]);
[INFO] [stdout] 1983 +                     new_denominators.push(forgotten_denominators[v/divisor]);
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> src/util.rs:90:9
[INFO] [stdout]    |
[INFO] [stdout] 90 |     for n in 0.. number_of_nodes {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `z` is assigned to, but never used
[INFO] [stdout]   --> src/main.rs:56:25
[INFO] [stdout]    |
[INFO] [stdout] 56 |                 let mut z = 0;
[INFO] [stdout]    |                         ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_z` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `o` is assigned to, but never used
[INFO] [stdout]   --> src/main.rs:57:25
[INFO] [stdout]    |
[INFO] [stdout] 57 |                 let mut o = 0;
[INFO] [stdout]    |                         ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_o` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> src/util.rs:90:9
[INFO] [stdout]    |
[INFO] [stdout] 90 |     for n in 0.. number_of_nodes {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `decimal_precision`
[INFO] [stdout]    --> src/main.rs:484:13
[INFO] [stdout]     |
[INFO] [stdout] 484 |         let decimal_precision = 10;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_decimal_precision`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `u_decimal_vectors_clone`
[INFO] [stdout]    --> src/main.rs:612:17
[INFO] [stdout]     |
[INFO] [stdout] 612 |         let mut u_decimal_vectors_clone = u_decimal_vectors.clone();
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_u_decimal_vectors_clone`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ratios`
[INFO] [stdout]    --> src/main.rs:772:13
[INFO] [stdout]     |
[INFO] [stdout] 772 |         let ratios: Vec<f64> = gini_numerators.iter().zip(gini_denominators.iter()).map(|(x, y)| *x as f64 / *y as f64).collect();
[INFO] [stdout]     |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_ratios`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `z` is assigned to, but never used
[INFO] [stdout]   --> src/main.rs:56:25
[INFO] [stdout]    |
[INFO] [stdout] 56 |                 let mut z = 0;
[INFO] [stdout]    |                         ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_z` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `o` is assigned to, but never used
[INFO] [stdout]   --> src/main.rs:57:25
[INFO] [stdout]    |
[INFO] [stdout] 57 |                 let mut o = 0;
[INFO] [stdout]    |                         ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_o` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:612:13
[INFO] [stdout]     |
[INFO] [stdout] 612 |         let mut u_decimal_vectors_clone = u_decimal_vectors.clone();
[INFO] [stdout]     |             ----^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:755:13
[INFO] [stdout]     |
[INFO] [stdout] 755 |         let mut gini_denominators: Vec<usize> = d_include_j;
[INFO] [stdout]     |             ----^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `decimal_precision`
[INFO] [stdout]    --> src/main.rs:938:17
[INFO] [stdout]     |
[INFO] [stdout] 938 |             let decimal_precision = 10;
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_decimal_precision`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `u_decimal_vectors_clone`
[INFO] [stdout]     --> src/main.rs:1044:21
[INFO] [stdout]      |
[INFO] [stdout] 1044 |             let mut u_decimal_vectors_clone = u_decimal_vectors.clone();
[INFO] [stdout]      |                     ^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_u_decimal_vectors_clone`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `gini_denominators`
[INFO] [stdout]     --> src/main.rs:1187:21
[INFO] [stdout]      |
[INFO] [stdout] 1187 |             let mut gini_denominators: Vec<usize> = d_include_j;
[INFO] [stdout]      |                     ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_gini_denominators`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `j_mult`
[INFO] [stdout]     --> src/main.rs:1194:21
[INFO] [stdout]      |
[INFO] [stdout] 1194 |             let mut j_mult = vec![vec![1 as usize; feat_count]; number_of_nodes_to_process];
[INFO] [stdout]      |                     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_j_mult`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `gini_denominators_j`
[INFO] [stdout]     --> src/main.rs:1197:21
[INFO] [stdout]      |
[INFO] [stdout] 1197 |             let mut gini_denominators_j = vec![0 as usize; feat_count * number_of_nodes_to_process * bin_count];
[INFO] [stdout]      |                     ^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_gini_denominators_j`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/main.rs:1044:17
[INFO] [stdout]      |
[INFO] [stdout] 1044 |             let mut u_decimal_vectors_clone = u_decimal_vectors.clone();
[INFO] [stdout]      |                 ----^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |                 |
[INFO] [stdout]      |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/main.rs:1187:17
[INFO] [stdout]      |
[INFO] [stdout] 1187 |             let mut gini_denominators: Vec<usize> = d_include_j;
[INFO] [stdout]      |                 ----^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |                 |
[INFO] [stdout]      |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/main.rs:1194:17
[INFO] [stdout]      |
[INFO] [stdout] 1194 |             let mut j_mult = vec![vec![1 as usize; feat_count]; number_of_nodes_to_process];
[INFO] [stdout]      |                 ----^^^^^^
[INFO] [stdout]      |                 |
[INFO] [stdout]      |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/main.rs:1197:17
[INFO] [stdout]      |
[INFO] [stdout] 1197 |             let mut gini_denominators_j = vec![0 as usize; feat_count * number_of_nodes_to_process * bin_count];
[INFO] [stdout]      |                 ----^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |                 |
[INFO] [stdout]      |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `decimal_precision`
[INFO] [stdout]     --> src/main.rs:1408:13
[INFO] [stdout]      |
[INFO] [stdout] 1408 |         let decimal_precision = 10;
[INFO] [stdout]      |             ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_decimal_precision`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `u_decimal_vectors_clone`
[INFO] [stdout]     --> src/main.rs:1514:17
[INFO] [stdout]      |
[INFO] [stdout] 1514 |         let mut u_decimal_vectors_clone = u_decimal_vectors.clone();
[INFO] [stdout]      |                 ^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_u_decimal_vectors_clone`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `gini_denominators`
[INFO] [stdout]     --> src/main.rs:1784:17
[INFO] [stdout]      |
[INFO] [stdout] 1784 |         let mut gini_denominators: Vec<usize> = d_include_j;
[INFO] [stdout]      |                 ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_gini_denominators`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `j_mult`
[INFO] [stdout]     --> src/main.rs:1830:17
[INFO] [stdout]      |
[INFO] [stdout] 1830 |         let mut j_mult = vec![vec![1 as usize; feat_count]; number_of_nodes_to_process];
[INFO] [stdout]      |                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_j_mult`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `gini_denominators_j`
[INFO] [stdout]     --> src/main.rs:1833:17
[INFO] [stdout]      |
[INFO] [stdout] 1833 |         let mut gini_denominators_j = vec![0 as usize; feat_count * number_of_nodes_to_process * bin_count];
[INFO] [stdout]      |                 ^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_gini_denominators_j`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `decimal_precision`
[INFO] [stdout]    --> src/main.rs:484:13
[INFO] [stdout]     |
[INFO] [stdout] 484 |         let decimal_precision = 10;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_decimal_precision`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `u_decimal_vectors_clone`
[INFO] [stdout]    --> src/main.rs:612:17
[INFO] [stdout]     |
[INFO] [stdout] 612 |         let mut u_decimal_vectors_clone = u_decimal_vectors.clone();
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_u_decimal_vectors_clone`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ratios`
[INFO] [stdout]    --> src/main.rs:772:13
[INFO] [stdout]     |
[INFO] [stdout] 772 |         let ratios: Vec<f64> = gini_numerators.iter().zip(gini_denominators.iter()).map(|(x, y)| *x as f64 / *y as f64).collect();
[INFO] [stdout]     |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_ratios`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:612:13
[INFO] [stdout]     |
[INFO] [stdout] 612 |         let mut u_decimal_vectors_clone = u_decimal_vectors.clone();
[INFO] [stdout]     |             ----^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/main.rs:1514:13
[INFO] [stdout]      |
[INFO] [stdout] 1514 |         let mut u_decimal_vectors_clone = u_decimal_vectors.clone();
[INFO] [stdout]      |             ----^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |             |
[INFO] [stdout]      |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:755:13
[INFO] [stdout]     |
[INFO] [stdout] 755 |         let mut gini_denominators: Vec<usize> = d_include_j;
[INFO] [stdout]     |             ----^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/main.rs:1784:13
[INFO] [stdout]      |
[INFO] [stdout] 1784 |         let mut gini_denominators: Vec<usize> = d_include_j;
[INFO] [stdout]      |             ----^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |             |
[INFO] [stdout]      |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/main.rs:1830:13
[INFO] [stdout]      |
[INFO] [stdout] 1830 |         let mut j_mult = vec![vec![1 as usize; feat_count]; number_of_nodes_to_process];
[INFO] [stdout]      |             ----^^^^^^
[INFO] [stdout]      |             |
[INFO] [stdout]      |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/main.rs:1833:13
[INFO] [stdout]      |
[INFO] [stdout] 1833 |         let mut gini_denominators_j = vec![0 as usize; feat_count * number_of_nodes_to_process * bin_count];
[INFO] [stdout]      |             ----^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |             |
[INFO] [stdout]      |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `decimal_precision`
[INFO] [stdout]    --> src/main.rs:938:17
[INFO] [stdout]     |
[INFO] [stdout] 938 |             let decimal_precision = 10;
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_decimal_precision`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `u_decimal_vectors_clone`
[INFO] [stdout]     --> src/main.rs:1044:21
[INFO] [stdout]      |
[INFO] [stdout] 1044 |             let mut u_decimal_vectors_clone = u_decimal_vectors.clone();
[INFO] [stdout]      |                     ^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_u_decimal_vectors_clone`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `gini_denominators`
[INFO] [stdout]     --> src/main.rs:1187:21
[INFO] [stdout]      |
[INFO] [stdout] 1187 |             let mut gini_denominators: Vec<usize> = d_include_j;
[INFO] [stdout]      |                     ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_gini_denominators`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `j_mult`
[INFO] [stdout]     --> src/main.rs:1194:21
[INFO] [stdout]      |
[INFO] [stdout] 1194 |             let mut j_mult = vec![vec![1 as usize; feat_count]; number_of_nodes_to_process];
[INFO] [stdout]      |                     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_j_mult`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `gini_denominators_j`
[INFO] [stdout]     --> src/main.rs:1197:21
[INFO] [stdout]      |
[INFO] [stdout] 1197 |             let mut gini_denominators_j = vec![0 as usize; feat_count * number_of_nodes_to_process * bin_count];
[INFO] [stdout]      |                     ^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_gini_denominators_j`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `valid_vote` is assigned to, but never used
[INFO] [stdout]     --> src/main.rs:2160:25
[INFO] [stdout]      |
[INFO] [stdout] 2160 |                 let mut valid_vote = false;
[INFO] [stdout]      |                         ^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: consider using `_valid_vote` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `vote`
[INFO] [stdout]     --> src/main.rs:2162:25
[INFO] [stdout]      |
[INFO] [stdout] 2162 |                 let mut vote = 0;
[INFO] [stdout]      |                         ^^^^ help: if this is intentional, prefix it with an underscore: `_vote`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `valid_vote` is never read
[INFO] [stdout]     --> src/main.rs:2185:25
[INFO] [stdout]      |
[INFO] [stdout] 2185 |                         valid_vote = true;
[INFO] [stdout]      |                         ^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = help: maybe it is overwritten before being read?
[INFO] [stdout]      = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/main.rs:2162:21
[INFO] [stdout]      |
[INFO] [stdout] 2162 |                 let mut vote = 0;
[INFO] [stdout]      |                     ----^^^^
[INFO] [stdout]      |                     |
[INFO] [stdout]      |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `d`
[INFO] [stdout]     --> src/main.rs:2240:21
[INFO] [stdout]      |
[INFO] [stdout] 2240 |                 for d in 0.. depth {
[INFO] [stdout]      |                     ^ help: if this is intentional, prefix it with an underscore: `_d`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/main.rs:1044:17
[INFO] [stdout]      |
[INFO] [stdout] 1044 |             let mut u_decimal_vectors_clone = u_decimal_vectors.clone();
[INFO] [stdout]      |                 ----^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |                 |
[INFO] [stdout]      |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/main.rs:1187:17
[INFO] [stdout]      |
[INFO] [stdout] 1187 |             let mut gini_denominators: Vec<usize> = d_include_j;
[INFO] [stdout]      |                 ----^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |                 |
[INFO] [stdout]      |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/main.rs:1194:17
[INFO] [stdout]      |
[INFO] [stdout] 1194 |             let mut j_mult = vec![vec![1 as usize; feat_count]; number_of_nodes_to_process];
[INFO] [stdout]      |                 ----^^^^^^
[INFO] [stdout]      |                 |
[INFO] [stdout]      |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/main.rs:1197:17
[INFO] [stdout]      |
[INFO] [stdout] 1197 |             let mut gini_denominators_j = vec![0 as usize; feat_count * number_of_nodes_to_process * bin_count];
[INFO] [stdout]      |                 ----^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |                 |
[INFO] [stdout]      |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `decimal_precision`
[INFO] [stdout]     --> src/main.rs:1408:13
[INFO] [stdout]      |
[INFO] [stdout] 1408 |         let decimal_precision = 10;
[INFO] [stdout]      |             ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_decimal_precision`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `u_decimal_vectors_clone`
[INFO] [stdout]     --> src/main.rs:1514:17
[INFO] [stdout]      |
[INFO] [stdout] 1514 |         let mut u_decimal_vectors_clone = u_decimal_vectors.clone();
[INFO] [stdout]      |                 ^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_u_decimal_vectors_clone`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `gini_denominators`
[INFO] [stdout]     --> src/main.rs:1784:17
[INFO] [stdout]      |
[INFO] [stdout] 1784 |         let mut gini_denominators: Vec<usize> = d_include_j;
[INFO] [stdout]      |                 ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_gini_denominators`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 42 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `j_mult`
[INFO] [stdout]     --> src/main.rs:1830:17
[INFO] [stdout]      |
[INFO] [stdout] 1830 |         let mut j_mult = vec![vec![1 as usize; feat_count]; number_of_nodes_to_process];
[INFO] [stdout]      |                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_j_mult`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `gini_denominators_j`
[INFO] [stdout]     --> src/main.rs:1833:17
[INFO] [stdout]      |
[INFO] [stdout] 1833 |         let mut gini_denominators_j = vec![0 as usize; feat_count * number_of_nodes_to_process * bin_count];
[INFO] [stdout]      |                 ^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_gini_denominators_j`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/main.rs:1514:13
[INFO] [stdout]      |
[INFO] [stdout] 1514 |         let mut u_decimal_vectors_clone = u_decimal_vectors.clone();
[INFO] [stdout]      |             ----^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |             |
[INFO] [stdout]      |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/main.rs:1784:13
[INFO] [stdout]      |
[INFO] [stdout] 1784 |         let mut gini_denominators: Vec<usize> = d_include_j;
[INFO] [stdout]      |             ----^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |             |
[INFO] [stdout]      |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/main.rs:1830:13
[INFO] [stdout]      |
[INFO] [stdout] 1830 |         let mut j_mult = vec![vec![1 as usize; feat_count]; number_of_nodes_to_process];
[INFO] [stdout]      |             ----^^^^^^
[INFO] [stdout]      |             |
[INFO] [stdout]      |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/main.rs:1833:13
[INFO] [stdout]      |
[INFO] [stdout] 1833 |         let mut gini_denominators_j = vec![0 as usize; feat_count * number_of_nodes_to_process * bin_count];
[INFO] [stdout]      |             ----^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |             |
[INFO] [stdout]      |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `valid_vote` is assigned to, but never used
[INFO] [stdout]     --> src/main.rs:2160:25
[INFO] [stdout]      |
[INFO] [stdout] 2160 |                 let mut valid_vote = false;
[INFO] [stdout]      |                         ^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: consider using `_valid_vote` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `vote`
[INFO] [stdout]     --> src/main.rs:2162:25
[INFO] [stdout]      |
[INFO] [stdout] 2162 |                 let mut vote = 0;
[INFO] [stdout]      |                         ^^^^ help: if this is intentional, prefix it with an underscore: `_vote`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `valid_vote` is never read
[INFO] [stdout]     --> src/main.rs:2185:25
[INFO] [stdout]      |
[INFO] [stdout] 2185 |                         valid_vote = true;
[INFO] [stdout]      |                         ^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = help: maybe it is overwritten before being read?
[INFO] [stdout]      = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/main.rs:2162:21
[INFO] [stdout]      |
[INFO] [stdout] 2162 |                 let mut vote = 0;
[INFO] [stdout]      |                     ----^^^^
[INFO] [stdout]      |                     |
[INFO] [stdout]      |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `d`
[INFO] [stdout]     --> src/main.rs:2240:21
[INFO] [stdout]      |
[INFO] [stdout] 2240 |                 for d in 0.. depth {
[INFO] [stdout]      |                     ^ help: if this is intentional, prefix it with an underscore: `_d`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 42 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 15.64s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: nom v5.1.2
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 2`
[INFO] running `Command { std: "docker" "inspect" "1f12ea9b702ca368a6664630ce2aea633d8044d25c2bb94c02c109db07c17f8e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1f12ea9b702ca368a6664630ce2aea633d8044d25c2bb94c02c109db07c17f8e", kill_on_drop: false }`
[INFO] [stdout] 1f12ea9b702ca368a6664630ce2aea633d8044d25c2bb94c02c109db07c17f8e