[INFO] cloning repository https://github.com/dsekercioglu/doodlang
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[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdsekercioglu%2Fdoodlang'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 716209877ec2e4f70bfe45443068b71dc85f4d89
[INFO] checking dsekercioglu/doodlang against master#a609fb45efad59dfd459c76e50899be9f0583b5a for pr-80579
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[INFO] [stderr] done.
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[INFO] crate git repo https://github.com/dsekercioglu/doodlang already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] de86dd5eaccb41c9d7f690ac319c9fdc2799b18f37278efa5b2d2e613d78217f
[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" "de86dd5eaccb41c9d7f690ac319c9fdc2799b18f37278efa5b2d2e613d78217f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "de86dd5eaccb41c9d7f690ac319c9fdc2799b18f37278efa5b2d2e613d78217f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "de86dd5eaccb41c9d7f690ac319c9fdc2799b18f37278efa5b2d2e613d78217f", kill_on_drop: false }`
[INFO] [stdout] de86dd5eaccb41c9d7f690ac319c9fdc2799b18f37278efa5b2d2e613d78217f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 7ed2bff8422b0a5c73d6462549bfb1fedb035807d496a650f1525fdf68448534
[INFO] running `Command { std: "docker" "start" "-a" "7ed2bff8422b0a5c73d6462549bfb1fedb035807d496a650f1525fdf68448534", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.77
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking getrandom v0.1.15
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking doodlang v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::eq_solver::matrix::Matrix`
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::eq_solver::matrix::Matrix;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `FunctionManager`, `Parser`, `generate_tree`
[INFO] [stdout]  --> src/main.rs:3:24
[INFO] [stdout]   |
[INFO] [stdout] 3 | use doodlang::parser::{Parser, FunctionManager, Node, generate_tree};
[INFO] [stdout]   |                        ^^^^^^  ^^^^^^^^^^^^^^^        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `PolyApprox`, `SecantSolver`
[INFO] [stdout]  --> src/main.rs:4:32
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::eq_solver::approx::{PolyApprox, SecantSolver};
[INFO] [stdout]   |                                ^^^^^^^^^^  ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::print_vec`
[INFO] [stdout]  --> src/eq_solver/approx.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::print_vec;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/eq_solver/function.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Index`, `Mul`, `Neg`
[INFO] [stdout]  --> src/eq_solver/matrix.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::ops::{Mul, Index, Neg};
[INFO] [stdout]   |                ^^^  ^^^^^  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::print_vec`
[INFO] [stdout]  --> src/eq_solver/matrix.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::print_vec;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/doodlang/interpreter.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Index`
[INFO] [stdout]  --> src/doodlang/interpreter.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::ops::Index;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `generate_tree`
[INFO] [stdout]  --> src/doodlang/interpreter.rs:3:48
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::doodlang::parser::{FunctionManager, generate_tree, smart_generate_tree};
[INFO] [stdout]   |                                                ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Deref`
[INFO] [stdout]  --> src/doodlang/parser.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::ops::Deref;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::print_vec`
[INFO] [stdout]  --> src/doodlang/parser.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::print_vec;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::rc::Rc`
[INFO] [stdout]  --> src/doodlang/parser.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::rc::Rc;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::eq_solver::matrix::Matrix`
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::eq_solver::matrix::Matrix;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `FunctionManager`, `Parser`, `generate_tree`
[INFO] [stdout]  --> src/main.rs:3:24
[INFO] [stdout]   |
[INFO] [stdout] 3 | use doodlang::parser::{Parser, FunctionManager, Node, generate_tree};
[INFO] [stdout]   |                        ^^^^^^  ^^^^^^^^^^^^^^^        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `PolyApprox`, `SecantSolver`
[INFO] [stdout]  --> src/main.rs:4:32
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::eq_solver::approx::{PolyApprox, SecantSolver};
[INFO] [stdout]   |                                ^^^^^^^^^^  ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::print_vec`
[INFO] [stdout]  --> src/eq_solver/approx.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::print_vec;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/eq_solver/function.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Index`, `Mul`, `Neg`
[INFO] [stdout]  --> src/eq_solver/matrix.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::ops::{Mul, Index, Neg};
[INFO] [stdout]   |                ^^^  ^^^^^  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::print_vec`
[INFO] [stdout]  --> src/eq_solver/matrix.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::print_vec;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/doodlang/interpreter.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Index`
[INFO] [stdout]  --> src/doodlang/interpreter.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::ops::Index;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `generate_tree`
[INFO] [stdout]  --> src/doodlang/interpreter.rs:3:48
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::doodlang::parser::{FunctionManager, generate_tree, smart_generate_tree};
[INFO] [stdout]   |                                                ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Deref`
[INFO] [stdout]  --> src/doodlang/parser.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::ops::Deref;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::print_vec`
[INFO] [stdout]  --> src/doodlang/parser.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::print_vec;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::rc::Rc`
[INFO] [stdout]  --> src/doodlang/parser.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::rc::Rc;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/doodlang/parser.rs:284:17
[INFO] [stdout]     |
[INFO] [stdout] 284 |             let mut min_func_scope = function_in_scope(node_formula, "ln", min_local_scope);
[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/doodlang/parser.rs:292:17
[INFO] [stdout]     |
[INFO] [stdout] 292 |             let mut min_func_scope = function_in_scope(node_formula, "sin", min_local_scope);
[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/doodlang/parser.rs:300:17
[INFO] [stdout]     |
[INFO] [stdout] 300 |             let mut min_func_scope = function_in_scope(node_formula, "cos", min_local_scope);
[INFO] [stdout]     |                 ----^^^^^^^^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `degree`
[INFO] [stdout]  --> src/eq_solver/approx.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     degree: usize,
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/eq_solver/approx.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub fn new(degree: usize) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `approx1d`
[INFO] [stdout]   --> src/eq_solver/approx.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 18 |     pub fn approx1d(&mut self, function_manager: &mut Box<FunctionManager>, function: &mut Box<dyn Function>, parameter: &str, range: (f6...
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `range`
[INFO] [stdout]   --> src/eq_solver/approx.rs:95:5
[INFO] [stdout]    |
[INFO] [stdout] 95 |     range: [f64; 2],
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `regress_range`
[INFO] [stdout]   --> src/eq_solver/approx.rs:96:5
[INFO] [stdout]    |
[INFO] [stdout] 96 |     regress_range: f64,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `attempt_num`
[INFO] [stdout]   --> src/eq_solver/approx.rs:97:5
[INFO] [stdout]    |
[INFO] [stdout] 97 |     attempt_num: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `iter`
[INFO] [stdout]   --> src/eq_solver/approx.rs:98:5
[INFO] [stdout]    |
[INFO] [stdout] 98 |     iter: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `margin`
[INFO] [stdout]   --> src/eq_solver/approx.rs:99:5
[INFO] [stdout]    |
[INFO] [stdout] 99 |     margin: f64,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `poly`
[INFO] [stdout]    --> src/eq_solver/approx.rs:100:5
[INFO] [stdout]     |
[INFO] [stdout] 100 |     poly: PolyApprox,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `solve_for_param`
[INFO] [stdout]    --> src/eq_solver/approx.rs:117:12
[INFO] [stdout]     |
[INFO] [stdout] 117 |     pub fn solve_for_param(&mut self, func: &mut Box<dyn Function>, func_manager: &mut Box<FunctionManager>, param: &str) -> f64 {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `quad_solver`
[INFO] [stdout]   --> src/doodlang/interpreter.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 |     quad_solver: QuadFind,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Parser`
[INFO] [stdout]  --> src/doodlang/parser.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct Parser;
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `generate_tree`
[INFO] [stdout]    --> src/doodlang/parser.rs:212:8
[INFO] [stdout]     |
[INFO] [stdout] 212 | pub fn generate_tree(formula: &str) -> Node<[usize; 2]> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `stuff`
[INFO] [stdout]   --> src/main.rs:38:4
[INFO] [stdout]    |
[INFO] [stdout] 38 | fn stuff(range: usize) -> [usize; 2] {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 30 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/doodlang/parser.rs:284:17
[INFO] [stdout]     |
[INFO] [stdout] 284 |             let mut min_func_scope = function_in_scope(node_formula, "ln", min_local_scope);
[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/doodlang/parser.rs:292:17
[INFO] [stdout]     |
[INFO] [stdout] 292 |             let mut min_func_scope = function_in_scope(node_formula, "sin", min_local_scope);
[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/doodlang/parser.rs:300:17
[INFO] [stdout]     |
[INFO] [stdout] 300 |             let mut min_func_scope = function_in_scope(node_formula, "cos", min_local_scope);
[INFO] [stdout]     |                 ----^^^^^^^^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `degree`
[INFO] [stdout]  --> src/eq_solver/approx.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     degree: usize,
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/eq_solver/approx.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub fn new(degree: usize) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `approx1d`
[INFO] [stdout]   --> src/eq_solver/approx.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 18 |     pub fn approx1d(&mut self, function_manager: &mut Box<FunctionManager>, function: &mut Box<dyn Function>, parameter: &str, range: (f6...
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `range`
[INFO] [stdout]   --> src/eq_solver/approx.rs:95:5
[INFO] [stdout]    |
[INFO] [stdout] 95 |     range: [f64; 2],
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `regress_range`
[INFO] [stdout]   --> src/eq_solver/approx.rs:96:5
[INFO] [stdout]    |
[INFO] [stdout] 96 |     regress_range: f64,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `attempt_num`
[INFO] [stdout]   --> src/eq_solver/approx.rs:97:5
[INFO] [stdout]    |
[INFO] [stdout] 97 |     attempt_num: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `iter`
[INFO] [stdout]   --> src/eq_solver/approx.rs:98:5
[INFO] [stdout]    |
[INFO] [stdout] 98 |     iter: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `margin`
[INFO] [stdout]   --> src/eq_solver/approx.rs:99:5
[INFO] [stdout]    |
[INFO] [stdout] 99 |     margin: f64,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `poly`
[INFO] [stdout]    --> src/eq_solver/approx.rs:100:5
[INFO] [stdout]     |
[INFO] [stdout] 100 |     poly: PolyApprox,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `solve_for_param`
[INFO] [stdout]    --> src/eq_solver/approx.rs:117:12
[INFO] [stdout]     |
[INFO] [stdout] 117 |     pub fn solve_for_param(&mut self, func: &mut Box<dyn Function>, func_manager: &mut Box<FunctionManager>, param: &str) -> f64 {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `quad_solver`
[INFO] [stdout]   --> src/doodlang/interpreter.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 |     quad_solver: QuadFind,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Parser`
[INFO] [stdout]  --> src/doodlang/parser.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct Parser;
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `generate_tree`
[INFO] [stdout]    --> src/doodlang/parser.rs:212:8
[INFO] [stdout]     |
[INFO] [stdout] 212 | pub fn generate_tree(formula: &str) -> Node<[usize; 2]> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `stuff`
[INFO] [stdout]   --> src/main.rs:38:4
[INFO] [stdout]    |
[INFO] [stdout] 38 | fn stuff(range: usize) -> [usize; 2] {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 30 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.24s
[INFO] running `Command { std: "docker" "inspect" "7ed2bff8422b0a5c73d6462549bfb1fedb035807d496a650f1525fdf68448534", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ed2bff8422b0a5c73d6462549bfb1fedb035807d496a650f1525fdf68448534", kill_on_drop: false }`
[INFO] [stdout] 7ed2bff8422b0a5c73d6462549bfb1fedb035807d496a650f1525fdf68448534