[INFO] cloning repository https://github.com/higgsboson20/CalculatorCalculator
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/higgsboson20/CalculatorCalculator" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhiggsboson20%2FCalculatorCalculator", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhiggsboson20%2FCalculatorCalculator'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 177edd57907e3599909773103c1d37524f64ee3a
[INFO] building higgsboson20/CalculatorCalculator against master#c7f6aa2869acdbf014d094c6e427e554e160b6db for pr-146237-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhiggsboson20%2FCalculatorCalculator" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/higgsboson20/CalculatorCalculator
[INFO] finished tweaking git repo https://github.com/higgsboson20/CalculatorCalculator
[INFO] tweaked toml for git repo https://github.com/higgsboson20/CalculatorCalculator written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/higgsboson20/CalculatorCalculator on toolchain c7f6aa2869acdbf014d094c6e427e554e160b6db
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/higgsboson20/CalculatorCalculator 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" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "inspect" "f62773204b2086de1c93e80ca1b003be79aa8f7a6bf1a45cef06be4ebb497d8a", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "start" "-a" "012b2349bb197e0df6c9835b0cce5699b27cd47786eb987a5cbe2bea104ea576", kill_on_drop: false }`
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[INFO] [stderr]    Compiling calculatorcalculator v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `fmt::Error`
[INFO] [stdout]  --> src/gui.rs:3:33
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::{collections::HashMap, fmt::Error};
[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 `f_eval` is never read
[INFO] [stdout]    --> src/math.rs:109:13
[INFO] [stdout]     |
[INFO] [stdout] 109 |     let mut f_eval: 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 `f_prime_eval` is never read
[INFO] [stdout]    --> src/math.rs:110:13
[INFO] [stdout]     |
[INFO] [stdout] 110 |     let mut f_prime_eval: 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 `x1` is never read
[INFO] [stdout]    --> src/math.rs:111:13
[INFO] [stdout]     |
[INFO] [stdout] 111 |     let mut x1: 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 import: `fmt::Error`
[INFO] [stdout]  --> src/gui.rs:3:33
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::{collections::HashMap, fmt::Error};
[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 `f_eval` is never read
[INFO] [stdout]    --> src/math.rs:109:13
[INFO] [stdout]     |
[INFO] [stdout] 109 |     let mut f_eval: 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 `f_prime_eval` is never read
[INFO] [stdout]    --> src/math.rs:110:13
[INFO] [stdout]     |
[INFO] [stdout] 110 |     let mut f_prime_eval: 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 `x1` is never read
[INFO] [stdout]    --> src/math.rs:111:13
[INFO] [stdout]     |
[INFO] [stdout] 111 |     let mut x1: f64 = 0.0;
[INFO] [stdout]     |             ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `substitute` is never used
[INFO] [stdout]   --> src/process.rs:46:8
[INFO] [stdout]    |
[INFO] [stdout] 46 | pub fn substitute(eq: &mut str, vars: HashMap<String, String>) -> String {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `subtract` is never used
[INFO] [stdout]   --> src/process.rs:80:8
[INFO] [stdout]    |
[INFO] [stdout] 80 | pub fn subtract(eq: &mut str) -> String {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `process` is never used
[INFO] [stdout]    --> src/process.rs:131:8
[INFO] [stdout]     |
[INFO] [stdout] 131 | pub fn process(eq: &mut str, vars: HashMap<String, String>) -> String {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `evaluate` is never used
[INFO] [stdout]   --> src/math.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub fn evaluate(f_proc: &mut str, x: f64) -> f64 {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `finite_pos_difference` is never used
[INFO] [stdout]    --> src/math.rs:102:8
[INFO] [stdout]     |
[INFO] [stdout] 102 | pub fn finite_pos_difference(f_proc: &mut str, x0: f64, epsilon: f64) -> f64 {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `newton_raphson` is never used
[INFO] [stdout]    --> src/math.rs:107:8
[INFO] [stdout]     |
[INFO] [stdout] 107 | pub fn newton_raphson(f_proc: &mut str, mut guess: f64, tolerance: f64, epsilon: f64, iterations: u16) -> f64{
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3m 41s
[INFO] running `Command { std: "docker" "inspect" "012b2349bb197e0df6c9835b0cce5699b27cd47786eb987a5cbe2bea104ea576", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "012b2349bb197e0df6c9835b0cce5699b27cd47786eb987a5cbe2bea104ea576", kill_on_drop: false }`
[INFO] [stdout] 012b2349bb197e0df6c9835b0cce5699b27cd47786eb987a5cbe2bea104ea576
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4a9921b0bcd5ff85d3aeb0adb9773bbf5e1ed08b1d16133c26c60740459070b5
[INFO] running `Command { std: "docker" "start" "-a" "4a9921b0bcd5ff85d3aeb0adb9773bbf5e1ed08b1d16133c26c60740459070b5", kill_on_drop: false }`
[INFO] [stdout] warning: unused import: `fmt::Error`
[INFO] [stdout]  --> src/gui.rs:3:33
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::{collections::HashMap, fmt::Error};
[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 `f_eval` is never read
[INFO] [stdout]    --> src/math.rs:109:13
[INFO] [stdout]     |
[INFO] [stdout] 109 |     let mut f_eval: 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 `f_prime_eval` is never read
[INFO] [stdout]    --> src/math.rs:110:13
[INFO] [stdout]     |
[INFO] [stdout] 110 |     let mut f_prime_eval: 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 `x1` is never read
[INFO] [stdout]    --> src/math.rs:111:13
[INFO] [stdout]     |
[INFO] [stdout] 111 |     let mut x1: f64 = 0.0;
[INFO] [stdout]     |             ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling calculatorcalculator v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `fmt::Error`
[INFO] [stdout]  --> src/gui.rs:3:33
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::{collections::HashMap, fmt::Error};
[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 `f_eval` is never read
[INFO] [stdout]    --> src/math.rs:109:13
[INFO] [stdout]     |
[INFO] [stdout] 109 |     let mut f_eval: 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 `f_prime_eval` is never read
[INFO] [stdout]    --> src/math.rs:110:13
[INFO] [stdout]     |
[INFO] [stdout] 110 |     let mut f_prime_eval: 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 `x1` is never read
[INFO] [stdout]    --> src/math.rs:111:13
[INFO] [stdout]     |
[INFO] [stdout] 111 |     let mut x1: f64 = 0.0;
[INFO] [stdout]     |             ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `substitute` is never used
[INFO] [stdout]   --> src/process.rs:46:8
[INFO] [stdout]    |
[INFO] [stdout] 46 | pub fn substitute(eq: &mut str, vars: HashMap<String, String>) -> String {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `subtract` is never used
[INFO] [stdout]   --> src/process.rs:80:8
[INFO] [stdout]    |
[INFO] [stdout] 80 | pub fn subtract(eq: &mut str) -> String {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `process` is never used
[INFO] [stdout]    --> src/process.rs:131:8
[INFO] [stdout]     |
[INFO] [stdout] 131 | pub fn process(eq: &mut str, vars: HashMap<String, String>) -> String {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `evaluate` is never used
[INFO] [stdout]   --> src/math.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub fn evaluate(f_proc: &mut str, x: f64) -> f64 {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `finite_pos_difference` is never used
[INFO] [stdout]    --> src/math.rs:102:8
[INFO] [stdout]     |
[INFO] [stdout] 102 | pub fn finite_pos_difference(f_proc: &mut str, x0: f64, epsilon: f64) -> f64 {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `newton_raphson` is never used
[INFO] [stdout]    --> src/math.rs:107:8
[INFO] [stdout]     |
[INFO] [stdout] 107 | pub fn newton_raphson(f_proc: &mut str, mut guess: f64, tolerance: f64, epsilon: f64, iterations: u16) -> f64{
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `fmt::Error`
[INFO] [stdout]  --> src/gui.rs:3:33
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::{collections::HashMap, fmt::Error};
[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 `f_eval` is never read
[INFO] [stdout]    --> src/math.rs:109:13
[INFO] [stdout]     |
[INFO] [stdout] 109 |     let mut f_eval: 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 `f_prime_eval` is never read
[INFO] [stdout]    --> src/math.rs:110:13
[INFO] [stdout]     |
[INFO] [stdout] 110 |     let mut f_prime_eval: 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 `x1` is never read
[INFO] [stdout]    --> src/math.rs:111:13
[INFO] [stdout]     |
[INFO] [stdout] 111 |     let mut x1: f64 = 0.0;
[INFO] [stdout]     |             ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `eqA` should have a snake case name
[INFO] [stdout]   --> tests/test_math.rs:60:13
[INFO] [stdout]    |
[INFO] [stdout] 60 |     let mut eqA: String = String::from("(3+3)-x");
[INFO] [stdout]    |             ^^^ help: convert the identifier to snake case: `eq_a`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `eqB` should have a snake case name
[INFO] [stdout]   --> tests/test_math.rs:61:13
[INFO] [stdout]    |
[INFO] [stdout] 61 |     let mut eqB: String = String::from("5*3*2*8 - e*(e+e) - 5*(2-8*(5+3))");
[INFO] [stdout]    |             ^^^ help: convert the identifier to snake case: `eq_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `eqA` should have a snake case name
[INFO] [stdout]   --> tests/test_math.rs:70:13
[INFO] [stdout]    |
[INFO] [stdout] 70 |     let mut eqA: String = String::from("x^x - 2");
[INFO] [stdout]    |             ^^^ help: convert the identifier to snake case: `eq_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `eqA` should have a snake case name
[INFO] [stdout]   --> tests/test_math.rs:79:13
[INFO] [stdout]    |
[INFO] [stdout] 79 |     let mut eqA: String = String::from("x^x - 2");
[INFO] [stdout]    |             ^^^ help: convert the identifier to snake case: `eq_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `eqB` should have a snake case name
[INFO] [stdout]   --> tests/test_math.rs:80:13
[INFO] [stdout]    |
[INFO] [stdout] 80 |     let mut eqB: String = String::from("x^5+x^3-x");
[INFO] [stdout]    |             ^^^ help: convert the identifier to snake case: `eq_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `fmt::Error`
[INFO] [stdout]  --> src/gui.rs:3:33
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::{collections::HashMap, fmt::Error};
[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 `f_eval` is never read
[INFO] [stdout]    --> src/math.rs:109:13
[INFO] [stdout]     |
[INFO] [stdout] 109 |     let mut f_eval: 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 `f_prime_eval` is never read
[INFO] [stdout]    --> src/math.rs:110:13
[INFO] [stdout]     |
[INFO] [stdout] 110 |     let mut f_prime_eval: 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 `x1` is never read
[INFO] [stdout]    --> src/math.rs:111:13
[INFO] [stdout]     |
[INFO] [stdout] 111 |     let mut x1: f64 = 0.0;
[INFO] [stdout]     |             ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `substitute` is never used
[INFO] [stdout]   --> src/process.rs:46:8
[INFO] [stdout]    |
[INFO] [stdout] 46 | pub fn substitute(eq: &mut str, vars: HashMap<String, String>) -> String {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `subtract` is never used
[INFO] [stdout]   --> src/process.rs:80:8
[INFO] [stdout]    |
[INFO] [stdout] 80 | pub fn subtract(eq: &mut str) -> String {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `process` is never used
[INFO] [stdout]    --> src/process.rs:131:8
[INFO] [stdout]     |
[INFO] [stdout] 131 | pub fn process(eq: &mut str, vars: HashMap<String, String>) -> String {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `evaluate` is never used
[INFO] [stdout]   --> src/math.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub fn evaluate(f_proc: &mut str, x: f64) -> f64 {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `finite_pos_difference` is never used
[INFO] [stdout]    --> src/math.rs:102:8
[INFO] [stdout]     |
[INFO] [stdout] 102 | pub fn finite_pos_difference(f_proc: &mut str, x0: f64, epsilon: f64) -> f64 {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `newton_raphson` is never used
[INFO] [stdout]    --> src/math.rs:107:8
[INFO] [stdout]     |
[INFO] [stdout] 107 | pub fn newton_raphson(f_proc: &mut str, mut guess: f64, tolerance: f64, epsilon: f64, iterations: u16) -> f64{
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 4.19s
[INFO] running `Command { std: "docker" "inspect" "4a9921b0bcd5ff85d3aeb0adb9773bbf5e1ed08b1d16133c26c60740459070b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4a9921b0bcd5ff85d3aeb0adb9773bbf5e1ed08b1d16133c26c60740459070b5", kill_on_drop: false }`
[INFO] [stdout] 4a9921b0bcd5ff85d3aeb0adb9773bbf5e1ed08b1d16133c26c60740459070b5
