[INFO] cloning repository https://github.com/ISickMan/algebrars
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ISickMan/algebrars" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FISickMan%2Falgebrars", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FISickMan%2Falgebrars'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e82d945260c38a66ace26ec907c6a092fffef1e8
[INFO] testing ISickMan/algebrars against master#1871252fc8bb672d40787e67404e6eaae7059369 for pr-125151
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FISickMan%2Falgebrars" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ISickMan/algebrars on toolchain 1871252fc8bb672d40787e67404e6eaae7059369
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1871252fc8bb672d40787e67404e6eaae7059369" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-1-tc1/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/ISickMan/algebrars
[INFO] finished tweaking git repo https://github.com/ISickMan/algebrars
[INFO] tweaked toml for git repo https://github.com/ISickMan/algebrars written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/ISickMan/algebrars 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" "+1871252fc8bb672d40787e67404e6eaae7059369" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/ChristianIvicevic/rust-decimal`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+1871252fc8bb672d40787e67404e6eaae7059369" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 58d8a1b1df7b4b51cfda9ab7597c81f257f477145c33072fab286fbf2f948a5b
[INFO] running `Command { std: "docker" "start" "-a" "58d8a1b1df7b4b51cfda9ab7597c81f257f477145c33072fab286fbf2f948a5b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "58d8a1b1df7b4b51cfda9ab7597c81f257f477145c33072fab286fbf2f948a5b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "58d8a1b1df7b4b51cfda9ab7597c81f257f477145c33072fab286fbf2f948a5b", kill_on_drop: false }`
[INFO] [stdout] 58d8a1b1df7b4b51cfda9ab7597c81f257f477145c33072fab286fbf2f948a5b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+1871252fc8bb672d40787e67404e6eaae7059369" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c9e1a8cd0f8935a26996372fcf8e03d20890fe846b5dec50d1a75b9c508a1126
[INFO] running `Command { std: "docker" "start" "-a" "c9e1a8cd0f8935a26996372fcf8e03d20890fe846b5dec50d1a75b9c508a1126", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.3.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.82
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling serde v1.0.201
[INFO] [stderr]    Compiling rust_decimal v1.35.0
[INFO] [stderr]    Compiling arrayvec v0.7.4
[INFO] [stderr]    Compiling rust_decimal v1.35.0 (https://github.com/ChristianIvicevic/rust-decimal?branch=wasm#30b90613)
[INFO] [stderr]    Compiling diff v0.1.13
[INFO] [stderr]    Compiling either v1.11.0
[INFO] [stderr]    Compiling yansi v0.5.1
[INFO] [stderr]    Compiling pretty_assertions v1.4.0
[INFO] [stderr]    Compiling itertools v0.12.1
[INFO] [stderr]    Compiling smallvec v1.13.2
[INFO] [stderr]    Compiling bimap v0.6.3
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling slab v0.4.9
[INFO] [stderr]    Compiling quote v1.0.36
[INFO] [stderr]    Compiling syn v2.0.61
[INFO] [stderr]    Compiling rust_decimal_macros v1.34.2
[INFO] [stderr]    Compiling serde_derive v1.0.201
[INFO] [stderr]    Compiling algebrars v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::ops::RangeBounds`
[INFO] [stdout]  --> src/arithmatic/arithmatic.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::ops::RangeBounds;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `MathTree`, `Step`, `factorization`
[INFO] [stdout]  --> src/arithmatic/arithmatic.rs:8:20
[INFO] [stdout]   |
[INFO] [stdout] 8 |     bounds::Bound, factorization, math_tree::{MathTree, TreeNodeRef, VarBounds}, stepper::{Step, Steps}, MathToken, OperationToken
[INFO] [stdout]   |                    ^^^^^^^^^^^^^              ^^^^^^^^                                     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `TreePos`
[INFO] [stdout]  --> src/equations.rs:6:52
[INFO] [stdout]   |
[INFO] [stdout] 6 |     math_tree::{MathTree, ParseError, TreeNodeRef, TreePos},
[INFO] [stdout]   |                                                    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BTreeMap`, `HashMap`
[INFO] [stdout]  --> src/factorization.rs:1:24
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::{BTreeMap, BTreeSet, HashMap};
[INFO] [stdout]   |                        ^^^^^^^^            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `TreeNode`
[INFO] [stdout]  --> src/factorization.rs:9:27
[INFO] [stdout]   |
[INFO] [stdout] 9 |     math_tree::{MathTree, TreeNode, TreeNodeRef},
[INFO] [stdout]   |                           ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `lexer::Lexer`
[INFO] [stdout]  --> src/function/fast_function.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     lexer::Lexer,
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `f32::consts::E`
[INFO] [stdout]  --> src/math_tree.rs:1:48
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{cell::RefCell, collections::HashMap, f32::consts::E, ops::Index, rc::Rc};
[INFO] [stdout]   |                                                ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `OperandsIt`
[INFO] [stdout]   --> src/math_tree.rs:13:38
[INFO] [stdout]    |
[INFO] [stdout] 13 |     operands::{OperandPos, Operands, OperandsIt},
[INFO] [stdout]    |                                      ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `itertools::Itertools`
[INFO] [stdout]  --> src/operands.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use itertools::Itertools;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/simplify/simplify.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `constants::CONSTANTS_MAP`
[INFO] [stdout]  --> src/simplify/simplify.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     constants::CONSTANTS_MAP,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `MathTokenType`, `OperationToken`
[INFO] [stdout]  --> src/simplify/symmetry.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     MathTokenType, OperationToken,
[INFO] [stdout]   |     ^^^^^^^^^^^^^  ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/equations.rs:140:9
[INFO] [stdout]     |
[INFO] [stdout] 132 | /             return EquationSolution::SolutionsFor(
[INFO] [stdout] 133 | |                 self.left.root.clone(),
[INFO] [stdout] 134 | |                 vec![self.right.root.clone()],
[INFO] [stdout] 135 | |             );
[INFO] [stdout]     | |_____________- any code following this expression is unreachable
[INFO] [stdout] ...
[INFO] [stdout] 140 |           EquationSolution::NoSolution
[INFO] [stdout]     |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `steps`
[INFO] [stdout]   --> src/arithmatic/arithmatic.rs:67:5
[INFO] [stdout]    |
[INFO] [stdout] 67 |     steps: &mut Steps,
[INFO] [stdout]    |     ^^^^^ help: if this is intentional, prefix it with an underscore: `_steps`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]    --> src/arithmatic/arithmatic.rs:201:14
[INFO] [stdout]     |
[INFO] [stdout] 201 |             |a: &TreeNodeRef, b, desc, bounds| {
[INFO] [stdout]     |              ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `left_variables`
[INFO] [stdout]   --> src/equations.rs:63:13
[INFO] [stdout]    |
[INFO] [stdout] 63 |         let left_variables = Function::scan_variables(&self.left.root);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_left_variables`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `right_variables`
[INFO] [stdout]   --> src/equations.rs:64:13
[INFO] [stdout]    |
[INFO] [stdout] 64 |         let right_variables = Function::scan_variables(&self.right.root);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_right_variables`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/factorization.rs:113:36
[INFO] [stdout]     |
[INFO] [stdout] 113 |     fn find_common_factor_constant(mut constants: BTreeSet<Decimal>) -> Option<Decimal> {
[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: unused variable: `state`
[INFO] [stdout]   --> src/math_tree.rs:34:42
[INFO] [stdout]    |
[INFO] [stdout] 34 |     fn hash<H: std::hash::Hasher>(&self, state: &mut H) {
[INFO] [stdout]    |                                          ^^^^^ help: if this is intentional, prefix it with an underscore: `_state`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `skip` is assigned to, but never used
[INFO] [stdout]   --> src/simplify/simplify.rs:67:17
[INFO] [stdout]    |
[INFO] [stdout] 67 |         let mut skip = 0;
[INFO] [stdout]    |                 ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_skip` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `skip` is never read
[INFO] [stdout]   --> src/simplify/simplify.rs:76:21
[INFO] [stdout]    |
[INFO] [stdout] 76 |                     skip -= 1;
[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: struct `EquationStep` is never constructed
[INFO] [stdout]   --> src/equations.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | struct EquationStep(OperationToken, TreeNodeRef);
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `find_common_factor_constant` and `find_common_denominator_constant` are never used
[INFO] [stdout]    --> src/factorization.rs:113:8
[INFO] [stdout]     |
[INFO] [stdout] 13  | impl MathTree {
[INFO] [stdout]     | ------------- associated functions in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 113 |     fn find_common_factor_constant(mut constants: BTreeSet<Decimal>) -> Option<Decimal> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 146 |     fn find_common_denominator_constant(mut constants: BTreeSet<Decimal>) -> Decimal {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `a` and `b` are never read
[INFO] [stdout]   --> src/geometry/types.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub struct Segment {
[INFO] [stdout]    |            ------- fields in this struct
[INFO] [stdout] 20 |     a: Point,
[INFO] [stdout]    |     ^
[INFO] [stdout] 21 |     b: Point,
[INFO] [stdout]    |     ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `NodePos` is never used
[INFO] [stdout]  --> src/stepper.rs:8:6
[INFO] [stdout]   |
[INFO] [stdout] 8 | type NodePos = Vec<usize>;
[INFO] [stdout]   |      ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/equations.rs:120:13
[INFO] [stdout]     |
[INFO] [stdout] 120 |             self.left.simplify(&mut steps);
[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)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 120 |             let _ = self.left.simplify(&mut steps);
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/equations.rs:121:13
[INFO] [stdout]     |
[INFO] [stdout] 121 |             self.right.simplify(&mut steps);
[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] 121 |             let _ = self.right.simplify(&mut steps);
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 27 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.00s
[INFO] running `Command { std: "docker" "inspect" "c9e1a8cd0f8935a26996372fcf8e03d20890fe846b5dec50d1a75b9c508a1126", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c9e1a8cd0f8935a26996372fcf8e03d20890fe846b5dec50d1a75b9c508a1126", kill_on_drop: false }`
[INFO] [stdout] c9e1a8cd0f8935a26996372fcf8e03d20890fe846b5dec50d1a75b9c508a1126
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+1871252fc8bb672d40787e67404e6eaae7059369" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ca099b4263a23f32171a5f62e8940ea2042e7e5b5fcb7fe012a4f20d92f507de
[INFO] running `Command { std: "docker" "start" "-a" "ca099b4263a23f32171a5f62e8940ea2042e7e5b5fcb7fe012a4f20d92f507de", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.8.19
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling serde_json v1.0.117
[INFO] [stderr]    Compiling libc v0.2.154
[INFO] [stderr]    Compiling rayon-core v1.12.1
[INFO] [stderr]    Compiling half v2.4.1
[INFO] [stderr]    Compiling regex-syntax v0.8.3
[INFO] [stderr]    Compiling clap_lex v0.7.0
[INFO] [stderr]    Compiling ryu v1.0.18
[INFO] [stderr]    Compiling ciborium-io v0.2.2
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[INFO] [stderr]    Compiling anstyle v1.0.7
[INFO] [stderr]    Compiling itoa v1.0.11
[INFO] [stderr]    Compiling clap_builder v4.5.2
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[INFO] [stderr]    Compiling ciborium-ll v0.2.2
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.18
[INFO] [stderr]    Compiling regex-automata v0.4.6
[INFO] [stderr]    Compiling crossbeam-deque v0.8.5
[INFO] [stderr]    Compiling itertools v0.10.5
[INFO] [stderr]    Compiling cast v0.3.0
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]    Compiling rust_decimal v1.35.0
[INFO] [stderr]    Compiling walkdir v2.5.0
[INFO] [stderr]    Compiling clap v4.5.4
[INFO] [stderr]    Compiling rayon v1.10.0
[INFO] [stderr]    Compiling tinytemplate v1.2.1
[INFO] [stderr]    Compiling plotters v0.3.5
[INFO] [stderr]    Compiling is-terminal v0.4.12
[INFO] [stderr]    Compiling ciborium v0.2.2
[INFO] [stderr]    Compiling criterion-plot v0.5.0
[INFO] [stderr]    Compiling regex v1.10.4
[INFO] [stderr]    Compiling oorandom v11.1.3
[INFO] [stderr]    Compiling anes v0.1.6
[INFO] [stderr]    Compiling once_cell v1.19.0
[INFO] [stderr]    Compiling rust_decimal v1.35.0 (https://github.com/ChristianIvicevic/rust-decimal?branch=wasm#30b90613)
[INFO] [stderr]    Compiling rust_decimal_macros v1.34.2
[INFO] [stderr]    Compiling criterion v0.5.1
[INFO] [stderr]    Compiling algebrars v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::ops::RangeBounds`
[INFO] [stdout]  --> src/arithmatic/arithmatic.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::ops::RangeBounds;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `MathTree`, `Step`, `factorization`
[INFO] [stdout]  --> src/arithmatic/arithmatic.rs:8:20
[INFO] [stdout]   |
[INFO] [stdout] 8 |     bounds::Bound, factorization, math_tree::{MathTree, TreeNodeRef, VarBounds}, stepper::{Step, Steps}, MathToken, OperationToken
[INFO] [stdout]   |                    ^^^^^^^^^^^^^              ^^^^^^^^                                     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `TreePos`
[INFO] [stdout]  --> src/equations.rs:6:52
[INFO] [stdout]   |
[INFO] [stdout] 6 |     math_tree::{MathTree, ParseError, TreeNodeRef, TreePos},
[INFO] [stdout]   |                                                    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BTreeMap`, `HashMap`
[INFO] [stdout]  --> src/factorization.rs:1:24
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::{BTreeMap, BTreeSet, HashMap};
[INFO] [stdout]   |                        ^^^^^^^^            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `TreeNode`
[INFO] [stdout]  --> src/factorization.rs:9:27
[INFO] [stdout]   |
[INFO] [stdout] 9 |     math_tree::{MathTree, TreeNode, TreeNodeRef},
[INFO] [stdout]   |                           ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `lexer::Lexer`
[INFO] [stdout]  --> src/function/fast_function.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     lexer::Lexer,
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `f32::consts::E`
[INFO] [stdout]  --> src/math_tree.rs:1:48
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{cell::RefCell, collections::HashMap, f32::consts::E, ops::Index, rc::Rc};
[INFO] [stdout]   |                                                ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `OperandsIt`
[INFO] [stdout]   --> src/math_tree.rs:13:38
[INFO] [stdout]    |
[INFO] [stdout] 13 |     operands::{OperandPos, Operands, OperandsIt},
[INFO] [stdout]    |                                      ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `itertools::Itertools`
[INFO] [stdout]  --> src/operands.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use itertools::Itertools;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/simplify/simplify.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `constants::CONSTANTS_MAP`
[INFO] [stdout]  --> src/simplify/simplify.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     constants::CONSTANTS_MAP,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `MathTokenType`, `OperationToken`
[INFO] [stdout]  --> src/simplify/symmetry.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     MathTokenType, OperationToken,
[INFO] [stdout]   |     ^^^^^^^^^^^^^  ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/equations.rs:140:9
[INFO] [stdout]     |
[INFO] [stdout] 132 | /             return EquationSolution::SolutionsFor(
[INFO] [stdout] 133 | |                 self.left.root.clone(),
[INFO] [stdout] 134 | |                 vec![self.right.root.clone()],
[INFO] [stdout] 135 | |             );
[INFO] [stdout]     | |_____________- any code following this expression is unreachable
[INFO] [stdout] ...
[INFO] [stdout] 140 |           EquationSolution::NoSolution
[INFO] [stdout]     |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `steps`
[INFO] [stdout]   --> src/arithmatic/arithmatic.rs:67:5
[INFO] [stdout]    |
[INFO] [stdout] 67 |     steps: &mut Steps,
[INFO] [stdout]    |     ^^^^^ help: if this is intentional, prefix it with an underscore: `_steps`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]    --> src/arithmatic/arithmatic.rs:201:14
[INFO] [stdout]     |
[INFO] [stdout] 201 |             |a: &TreeNodeRef, b, desc, bounds| {
[INFO] [stdout]     |              ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `left_variables`
[INFO] [stdout]   --> src/equations.rs:63:13
[INFO] [stdout]    |
[INFO] [stdout] 63 |         let left_variables = Function::scan_variables(&self.left.root);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_left_variables`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `right_variables`
[INFO] [stdout]   --> src/equations.rs:64:13
[INFO] [stdout]    |
[INFO] [stdout] 64 |         let right_variables = Function::scan_variables(&self.right.root);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_right_variables`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/factorization.rs:113:36
[INFO] [stdout]     |
[INFO] [stdout] 113 |     fn find_common_factor_constant(mut constants: BTreeSet<Decimal>) -> Option<Decimal> {
[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: unused variable: `state`
[INFO] [stdout]   --> src/math_tree.rs:34:42
[INFO] [stdout]    |
[INFO] [stdout] 34 |     fn hash<H: std::hash::Hasher>(&self, state: &mut H) {
[INFO] [stdout]    |                                          ^^^^^ help: if this is intentional, prefix it with an underscore: `_state`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `skip` is assigned to, but never used
[INFO] [stdout]   --> src/simplify/simplify.rs:67:17
[INFO] [stdout]    |
[INFO] [stdout] 67 |         let mut skip = 0;
[INFO] [stdout]    |                 ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_skip` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `skip` is never read
[INFO] [stdout]   --> src/simplify/simplify.rs:76:21
[INFO] [stdout]    |
[INFO] [stdout] 76 |                     skip -= 1;
[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: struct `EquationStep` is never constructed
[INFO] [stdout]   --> src/equations.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | struct EquationStep(OperationToken, TreeNodeRef);
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `find_common_denominator_constant` is never used
[INFO] [stdout]    --> src/factorization.rs:146:8
[INFO] [stdout]     |
[INFO] [stdout] 13  | impl MathTree {
[INFO] [stdout]     | ------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 146 |     fn find_common_denominator_constant(mut constants: BTreeSet<Decimal>) -> Decimal {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `a` and `b` are never read
[INFO] [stdout]   --> src/geometry/types.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub struct Segment {
[INFO] [stdout]    |            ------- fields in this struct
[INFO] [stdout] 20 |     a: Point,
[INFO] [stdout]    |     ^
[INFO] [stdout] 21 |     b: Point,
[INFO] [stdout]    |     ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `NodePos` is never used
[INFO] [stdout]  --> src/stepper.rs:8:6
[INFO] [stdout]   |
[INFO] [stdout] 8 | type NodePos = Vec<usize>;
[INFO] [stdout]   |      ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `steps_test` is never used
[INFO] [stdout]   --> src/stepper.rs:49:8
[INFO] [stdout]    |
[INFO] [stdout] 49 |     fn steps_test(expr: &str, res: TreeNodeRef, steps_check: Steps) -> Result<(), OperationError> {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/equations.rs:120:13
[INFO] [stdout]     |
[INFO] [stdout] 120 |             self.left.simplify(&mut steps);
[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)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 120 |             let _ = self.left.simplify(&mut steps);
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/equations.rs:121:13
[INFO] [stdout]     |
[INFO] [stdout] 121 |             self.right.simplify(&mut steps);
[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] 121 |             let _ = self.right.simplify(&mut steps);
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 28 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 9.39s
[INFO] running `Command { std: "docker" "inspect" "ca099b4263a23f32171a5f62e8940ea2042e7e5b5fcb7fe012a4f20d92f507de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca099b4263a23f32171a5f62e8940ea2042e7e5b5fcb7fe012a4f20d92f507de", kill_on_drop: false }`
[INFO] [stdout] ca099b4263a23f32171a5f62e8940ea2042e7e5b5fcb7fe012a4f20d92f507de
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+1871252fc8bb672d40787e67404e6eaae7059369" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 63f65613055d18b06cb874eb306a58b01e9aa06634827464843dc5ae0ecd3ad9
[INFO] running `Command { std: "docker" "start" "-a" "63f65613055d18b06cb874eb306a58b01e9aa06634827464843dc5ae0ecd3ad9", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `std::ops::RangeBounds`
[INFO] [stderr]  --> src/arithmatic/arithmatic.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::ops::RangeBounds;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `MathTree`, `Step`, `factorization`
[INFO] [stderr]  --> src/arithmatic/arithmatic.rs:8:20
[INFO] [stderr]   |
[INFO] [stderr] 8 |     bounds::Bound, factorization, math_tree::{MathTree, TreeNodeRef, VarBounds}, stepper::{Step, Steps}, MathToken, OperationToken
[INFO] [stderr]   |                    ^^^^^^^^^^^^^              ^^^^^^^^                                     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `TreePos`
[INFO] [stderr]  --> src/equations.rs:6:52
[INFO] [stderr]   |
[INFO] [stderr] 6 |     math_tree::{MathTree, ParseError, TreeNodeRef, TreePos},
[INFO] [stderr]   |                                                    ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `BTreeMap`, `HashMap`
[INFO] [stderr]  --> src/factorization.rs:1:24
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::collections::{BTreeMap, BTreeSet, HashMap};
[INFO] [stderr]   |                        ^^^^^^^^            ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `TreeNode`
[INFO] [stderr]  --> src/factorization.rs:9:27
[INFO] [stderr]   |
[INFO] [stderr] 9 |     math_tree::{MathTree, TreeNode, TreeNodeRef},
[INFO] [stderr]   |                           ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `lexer::Lexer`
[INFO] [stderr]  --> src/function/fast_function.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     lexer::Lexer,
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `f32::consts::E`
[INFO] [stderr]  --> src/math_tree.rs:1:48
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::{cell::RefCell, collections::HashMap, f32::consts::E, ops::Index, rc::Rc};
[INFO] [stderr]   |                                                ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `OperandsIt`
[INFO] [stderr]   --> src/math_tree.rs:13:38
[INFO] [stderr]    |
[INFO] [stderr] 13 |     operands::{OperandPos, Operands, OperandsIt},
[INFO] [stderr]    |                                      ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `itertools::Itertools`
[INFO] [stderr]  --> src/operands.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use itertools::Itertools;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::HashMap`
[INFO] [stderr]  --> src/simplify/simplify.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::collections::HashMap;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `constants::CONSTANTS_MAP`
[INFO] [stderr]  --> src/simplify/simplify.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     constants::CONSTANTS_MAP,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `MathTokenType`, `OperationToken`
[INFO] [stderr]  --> src/simplify/symmetry.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     MathTokenType, OperationToken,
[INFO] [stderr]   |     ^^^^^^^^^^^^^  ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]    --> src/equations.rs:140:9
[INFO] [stderr]     |
[INFO] [stderr] 132 | /             return EquationSolution::SolutionsFor(
[INFO] [stderr] 133 | |                 self.left.root.clone(),
[INFO] [stderr] 134 | |                 vec![self.right.root.clone()],
[INFO] [stderr] 135 | |             );
[INFO] [stderr]     | |_____________- any code following this expression is unreachable
[INFO] [stderr] ...
[INFO] [stderr] 140 |           EquationSolution::NoSolution
[INFO] [stderr]     |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `steps`
[INFO] [stderr]   --> src/arithmatic/arithmatic.rs:67:5
[INFO] [stderr]    |
[INFO] [stderr] 67 |     steps: &mut Steps,
[INFO] [stderr]    |     ^^^^^ help: if this is intentional, prefix it with an underscore: `_steps`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `a`
[INFO] [stderr]    --> src/arithmatic/arithmatic.rs:201:14
[INFO] [stderr]     |
[INFO] [stderr] 201 |             |a: &TreeNodeRef, b, desc, bounds| {
[INFO] [stderr]     |              ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `left_variables`
[INFO] [stderr]   --> src/equations.rs:63:13
[INFO] [stderr]    |
[INFO] [stderr] 63 |         let left_variables = Function::scan_variables(&self.left.root);
[INFO] [stderr]    |             ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_left_variables`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `right_variables`
[INFO] [stderr]   --> src/equations.rs:64:13
[INFO] [stderr]    |
[INFO] [stderr] 64 |         let right_variables = Function::scan_variables(&self.right.root);
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_right_variables`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/factorization.rs:113:36
[INFO] [stderr]     |
[INFO] [stderr] 113 |     fn find_common_factor_constant(mut constants: BTreeSet<Decimal>) -> Option<Decimal> {
[INFO] [stderr]     |                                    ----^^^^^^^^^
[INFO] [stderr]     |                                    |
[INFO] [stderr]     |                                    help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `state`
[INFO] [stderr]   --> src/math_tree.rs:34:42
[INFO] [stderr]    |
[INFO] [stderr] 34 |     fn hash<H: std::hash::Hasher>(&self, state: &mut H) {
[INFO] [stderr]    |                                          ^^^^^ help: if this is intentional, prefix it with an underscore: `_state`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `skip` is assigned to, but never used
[INFO] [stderr]   --> src/simplify/simplify.rs:67:17
[INFO] [stderr]    |
[INFO] [stderr] 67 |         let mut skip = 0;
[INFO] [stderr]    |                 ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: consider using `_skip` instead
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `skip` is never read
[INFO] [stderr]   --> src/simplify/simplify.rs:76:21
[INFO] [stderr]    |
[INFO] [stderr] 76 |                     skip -= 1;
[INFO] [stderr]    |                     ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct `EquationStep` is never constructed
[INFO] [stderr]   --> src/equations.rs:26:8
[INFO] [stderr]    |
[INFO] [stderr] 26 | struct EquationStep(OperationToken, TreeNodeRef);
[INFO] [stderr]    |        ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `find_common_denominator_constant` is never used
[INFO] [stderr]    --> src/factorization.rs:146:8
[INFO] [stderr]     |
[INFO] [stderr] 13  | impl MathTree {
[INFO] [stderr]     | ------------- associated function in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 146 |     fn find_common_denominator_constant(mut constants: BTreeSet<Decimal>) -> Decimal {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: fields `a` and `b` are never read
[INFO] [stderr]   --> src/geometry/types.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 19 | pub struct Segment {
[INFO] [stderr]    |            ------- fields in this struct
[INFO] [stderr] 20 |     a: Point,
[INFO] [stderr]    |     ^
[INFO] [stderr] 21 |     b: Point,
[INFO] [stderr]    |     ^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias `NodePos` is never used
[INFO] [stderr]  --> src/stepper.rs:8:6
[INFO] [stderr]   |
[INFO] [stderr] 8 | type NodePos = Vec<usize>;
[INFO] [stderr]   |      ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `steps_test` is never used
[INFO] [stderr]   --> src/stepper.rs:49:8
[INFO] [stderr]    |
[INFO] [stderr] 49 |     fn steps_test(expr: &str, res: TreeNodeRef, steps_check: Steps) -> Result<(), OperationError> {
[INFO] [stderr]    |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/equations.rs:120:13
[INFO] [stderr]     |
[INFO] [stderr] 120 |             self.left.simplify(&mut steps);
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 120 |             let _ = self.left.simplify(&mut steps);
[INFO] [stderr]     |             +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/equations.rs:121:13
[INFO] [stderr]     |
[INFO] [stderr] 121 |             self.right.simplify(&mut steps);
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 121 |             let _ = self.right.simplify(&mut steps);
[INFO] [stderr]     |             +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `algebrars` (lib test) generated 28 warnings (run `cargo fix --lib -p algebrars --tests` to apply 13 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/algebrars-2ea097ef9a098994)
[INFO] [stdout] 
[INFO] [stdout] running 25 tests
[INFO] [stdout] test factorization::tests::common_multiplier_constant ... ok
[INFO] [stdout] test function::fast_function::tests::fast_func_epxp2 ... ok
[INFO] [stdout] test function::fast_function::tests::fast_func_xp2 ... ok
[INFO] [stdout] test function::fast_function::tests::fast_func_xpx ... ok
[INFO] [stdout] test function::function::tests::evaluate_2p2 ... ok
[INFO] [stdout] test function::fast_function::tests::fast_func_xp2d2 ... ok
[INFO] [stdout] test function::function::tests::evaluate_xp2 ... ok
[INFO] [stdout] test lexer::tests::lex ... ok
[INFO] [stdout] test function::function::tests::evaluate_xpx ... ok
[INFO] [stdout] test function::function::tests::evaluate_x ... ok
[INFO] [stdout] test math_tree::tests::rpn_precedence ... ok
[INFO] [stdout] test lexer::tests::lex_parentheses ... ok
[INFO] [stdout] test latex::tests::simple_latex ... ok
[INFO] [stdout] test math_tree::tests::rpn ... ok
[INFO] [stdout] test math_tree::tests::rpn_precedence2 ... ok
[INFO] [stdout] test math_tree::tests::rpn_precedence_double_parentheses ... ok
[INFO] [stdout] test math_tree::tests::rpn_precedence_parentheses ... ok
[INFO] [stdout] test math_tree::tests::tree_group_orderless ... ok
[INFO] [stdout] test pattern::tests::like_test ... ok
[INFO] [stdout] test simplify::simplify::tests::zero_and_double_add_subs ... ok
[INFO] [stdout] test simplify::simplify::tests::simplify_constants ... ok
[INFO] [stdout] test stepper::tests::steps ... ok
[INFO] [stdout] test simplify::simplify::tests::simplify_x ... ok
[INFO] [stdout] test factorization::tests::factorize_x ... FAILED
[INFO] [stdout] test equations::tests::simple_equation ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- factorization::tests::factorize_x stdout ----
[INFO] [stdout] Simplifying: "(0-(2*x))+(0-1)+(2*x)"
[INFO] [stdout] thread 'factorization::tests::factorize_x' panicked at src/simplify/simplify.rs:129:9:
[INFO] [stdout] assertion failed: `(left == right)`
[INFO] [stdout] 
[INFO] [stdout] [1mDiff[0m [31m< left[0m / [32mright >[0m :
[INFO] [stdout] [31m<[0m[1;48;5;52;31m([0m[31m-[0m[1;48;5;52;31m2*x)+-[0m[31m1[0m[1;48;5;52;31m+(2*x)[0m
[INFO] [stdout] [32m>-1[0m
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x55ba1cdc9e45 - std::backtrace_rs::backtrace::libunwind::trace::h59d96bdb08384354
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/../../backtrace/src/backtrace/libunwind.rs:105:5
[INFO] [stdout]    1:     0x55ba1cdc9e45 - std::backtrace_rs::backtrace::trace_unsynchronized::h9cf5becacfc93fba
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x55ba1cdc9e45 - std::sys_common::backtrace::_print_fmt::h10b76d10405dbd48
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/sys_common/backtrace.rs:68:5
[INFO] [stdout]    3:     0x55ba1cdc9e45 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h6ed9e62a156d84e4
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/sys_common/backtrace.rs:44:22
[INFO] [stdout]    4:     0x55ba1cdf153b - core::fmt::rt::Argument::fmt::h645c680983f03c9f
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/core/src/fmt/rt.rs:165:63
[INFO] [stdout]    5:     0x55ba1cdf153b - core::fmt::write::h8bcd80919a02be29
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/core/src/fmt/mod.rs:1169:21
[INFO] [stdout]    6:     0x55ba1cdc767f - std::io::Write::write_fmt::h8d0c47c662cad79c
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/io/mod.rs:1835:15
[INFO] [stdout]    7:     0x55ba1cdc9c1e - std::sys_common::backtrace::_print::h6306f131a28d62b0
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/sys_common/backtrace.rs:47:5
[INFO] [stdout]    8:     0x55ba1cdc9c1e - std::sys_common::backtrace::print::h7079288e0a26dfcc
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/sys_common/backtrace.rs:34:9
[INFO] [stdout]    9:     0x55ba1cdcb649 - std::panicking::default_hook::{{closure}}::hb063ecec81a736ba
[INFO] [stdout]   10:     0x55ba1cdcb30e - std::panicking::default_hook::hd56ee406bf547b5c
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/panicking.rs:295:9
[INFO] [stdout]   11:     0x55ba1cd6684a - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::he5eacdef44c8728f
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/alloc/src/boxed.rs:2036:9
[INFO] [stdout]   12:     0x55ba1cd6684a - test::test_main::{{closure}}::h0ec9aed229e79095
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/test/src/lib.rs:137:21
[INFO] [stdout]   13:     0x55ba1cdcbc4b - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hcbd0d80e1ad4e4f9
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/alloc/src/boxed.rs:2036:9
[INFO] [stdout]   14:     0x55ba1cdcbc4b - std::panicking::rust_panic_with_hook::h624aa3ca42ebb8f2
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/panicking.rs:799:13
[INFO] [stdout]   15:     0x55ba1cdcb9c4 - std::panicking::begin_panic_handler::{{closure}}::hbc4e76194a5e287c
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/panicking.rs:664:13
[INFO] [stdout]   16:     0x55ba1cdca309 - std::sys_common::backtrace::__rust_end_short_backtrace::h847fedc9d1ff7b6d
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/sys_common/backtrace.rs:171:18
[INFO] [stdout]   17:     0x55ba1cdcb6f7 - rust_begin_unwind
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/panicking.rs:652:5
[INFO] [stdout]   18:     0x55ba1ccbb983 - core::panicking::panic_fmt::hec11a924b87ce965
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/core/src/panicking.rs:72:14
[INFO] [stdout]   19:     0x55ba1cd17706 - algebrars::simplify::simplify::tests::simplify_test_latex::h658934847ea51edb
[INFO] [stdout]                                at /opt/rustwide/workdir/src/simplify/simplify.rs:129:9
[INFO] [stdout]   20:     0x55ba1cd32dbe - algebrars::factorization::tests::factorize_x::h197580e93973525e
[INFO] [stdout]                                at /opt/rustwide/workdir/src/factorization.rs:202:9
[INFO] [stdout]   21:     0x55ba1cd32d87 - algebrars::factorization::tests::factorize_x::{{closure}}::hbb52179e47d9738f
[INFO] [stdout]                                at /opt/rustwide/workdir/src/factorization.rs:201:21
[INFO] [stdout]   22:     0x55ba1cd04ce6 - core::ops::function::FnOnce::call_once::h42cc731168e835bc
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   23:     0x55ba1cd6b22b - core::ops::function::FnOnce::call_once::h2e43a8f6f3d94b99
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x55ba1cd6b22b - test::__rust_begin_short_backtrace::h214c9f2d2d3fee90
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/test/src/lib.rs:625:18
[INFO] [stdout]   25:     0x55ba1cd6a931 - test::run_test_in_process::{{closure}}::h510b7ba7990692a5
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/test/src/lib.rs:648:60
[INFO] [stdout]   26:     0x55ba1cd6a931 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h4157186197a93871
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   27:     0x55ba1cd6a931 - std::panicking::try::do_call::h1bf2463bccd4b28c
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/panicking.rs:559:40
[INFO] [stdout]   28:     0x55ba1cd6a931 - std::panicking::try::hd6d4808c9fab4fa5
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/panicking.rs:523:19
[INFO] [stdout]   29:     0x55ba1cd6a931 - std::panic::catch_unwind::hd5641d97d123f9f2
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/panic.rs:149:14
[INFO] [stdout]   30:     0x55ba1cd6a931 - test::run_test_in_process::hc273b71c8b878a4c
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/test/src/lib.rs:648:27
[INFO] [stdout]   31:     0x55ba1cd6a931 - test::run_test::{{closure}}::h6838df834eb8467e
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/test/src/lib.rs:569:43
[INFO] [stdout]   32:     0x55ba1cd332f4 - test::run_test::{{closure}}::h608b98ecff5665fb
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/test/src/lib.rs:599:41
[INFO] [stdout]   33:     0x55ba1cd332f4 - std::sys_common::backtrace::__rust_begin_short_backtrace::hdc4182b97d1042e9
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/sys_common/backtrace.rs:155:18
[INFO] [stdout]   34:     0x55ba1cd37d22 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h571773fd21d674c8
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/thread/mod.rs:542:17
[INFO] [stdout]   35:     0x55ba1cd37d22 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hdcd384cf2fa70ba3
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   36:     0x55ba1cd37d22 - std::panicking::try::do_call::h4f1a44bd81423be1
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/panicking.rs:559:40
[INFO] [stdout]   37:     0x55ba1cd37d22 - std::panicking::try::h5e02afcb81dcd361
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/panicking.rs:523:19
[INFO] [stdout]   38:     0x55ba1cd37d22 - std::panic::catch_unwind::h022f75775bfd8c45
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/panic.rs:149:14
[INFO] [stdout]   39:     0x55ba1cd37d22 - std::thread::Builder::spawn_unchecked_::{{closure}}::hf5a62e9e4e6df1f8
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/thread/mod.rs:541:30
[INFO] [stdout]   40:     0x55ba1cd37d22 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h6d56360aeb9509a7
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   41:     0x55ba1cdcff3b - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h7a343dc551c06baa
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/alloc/src/boxed.rs:2022:9
[INFO] [stdout]   42:     0x55ba1cdcff3b - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h30b8111cbaa644f3
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/alloc/src/boxed.rs:2022:9
[INFO] [stdout]   43:     0x55ba1cdcff3b - std::sys::pal::unix::thread::Thread::new::thread_start::h7404e134e61e7a11
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/sys/pal/unix/thread.rs:108:17
[INFO] [stdout]   44:     0x7fc65db9eac3 - <unknown>
[INFO] [stdout]   45:     0x7fc65dc2fa04 - __clone
[INFO] [stdout]   46:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- equations::tests::simple_equation stdout ----
[INFO] [stdout] Simplifying: "x+4"
[INFO] [stdout] Simplifying: "(2*x)+4"
[INFO] [stdout] Simplifying: "x+4"
[INFO] [stdout] ELIMINATING [
[INFO] [stdout]     (
[INFO] [stdout]         Add,
[INFO] [stdout]         [
[INFO] [stdout]             TreeNode {
[INFO] [stdout]                 val: 4,
[INFO] [stdout]                 operands: [],
[INFO] [stdout]             },
[INFO] [stdout]         ],
[INFO] [stdout]     ),
[INFO] [stdout]     (
[INFO] [stdout]         Add,
[INFO] [stdout]         [
[INFO] [stdout]             TreeNode {
[INFO] [stdout]                 val: x,
[INFO] [stdout]                 operands: [],
[INFO] [stdout]             },
[INFO] [stdout]         ],
[INFO] [stdout]     ),
[INFO] [stdout] ]
[INFO] [stdout] Simplifying: "(((2*x)+4)-4)-x"
[INFO] [stdout] Simplifying: "((x+4)-4)-x"
[INFO] [stdout] SIMPLIFIED L "(2*x)+(-1*x)" R "0"
[INFO] [stdout] ELIMINATING [
[INFO] [stdout]     (
[INFO] [stdout]         Add,
[INFO] [stdout]         [],
[INFO] [stdout]     ),
[INFO] [stdout] ]
[INFO] [stdout] Simplifying: "(2*x)+(-1*x)"
[INFO] [stdout] Simplifying: "0"
[INFO] [stdout] SIMPLIFIED L "(2*x)+(-1*x)" R "0"
[INFO] [stdout] Simplifying: "(2*x)+(-1*x)"
[INFO] [stdout] Simplifying: "0"
[INFO] [stdout] thread 'equations::tests::simple_equation' panicked at src/equations.rs:182:9:
[INFO] [stdout] assertion failed: `(left == right)`
[INFO] [stdout] 
[INFO] [stdout] [1mDiff[0m [31m< left[0m / [32mright >[0m :
[INFO] [stdout]  SolutionsFor(
[INFO] [stdout]      TreeNode {
[INFO] [stdout] [31m<        val: Add,[0m
[INFO] [stdout] [31m<        operands: [[0m
[INFO] [stdout] [31m<            TreeNode {[0m
[INFO] [stdout] [31m<                val: Multiply,[0m
[INFO] [stdout] [31m<                operands: [[0m
[INFO] [stdout] [31m<                    TreeNode {[0m
[INFO] [stdout] [31m<                        val: 2,[0m
[INFO] [stdout] [31m<                        operands: [],[0m
[INFO] [stdout] [31m<                    },[0m
[INFO] [stdout] [31m<                    TreeNode {[0m
[INFO] [stdout] [31m<                        val: x,[0m
[INFO] [stdout] [31m<                        operands: [],[0m
[INFO] [stdout] [31m<                    },[0m
[INFO] [stdout] [31m<                ],[0m
[INFO] [stdout] [31m<            },[0m
[INFO] [stdout] [31m<            TreeNode {[0m
[INFO] [stdout] [31m<                val: Multiply,[0m
[INFO] [stdout] [31m<                operands: [[0m
[INFO] [stdout] [31m<                    TreeNode {[0m
[INFO] [stdout] [31m<                        val: -1,[0m
[INFO] [stdout] [31m<                        operands: [],[0m
[INFO] [stdout] [31m<                    },[0m
[INFO] [stdout] [31m<                    TreeNode {[0m
[INFO] [stdout] [31m<                        val: x,[0m
[INFO] [stdout] [31m<                        operands: [],[0m
[INFO] [stdout] [31m<                    },[0m
[INFO] [stdout] [31m<                ],[0m
[INFO] [stdout] [31m<            },[0m
[INFO] [stdout] [31m<        ],[0m
[INFO] [stdout] [32m>        val: x,[0m
[INFO] [stdout] [32m>        operands: [],[0m
[INFO] [stdout]      },
[INFO] [stdout]      [
[INFO] [stdout]          TreeNode {
[INFO] [stdout]              val: 0,
[INFO] [stdout]              operands: [],
[INFO] [stdout]          },
[INFO] [stdout]      ],
[INFO] [stdout]  )
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x55ba1cdc9e45 - std::backtrace_rs::backtrace::libunwind::trace::h59d96bdb08384354
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/../../backtrace/src/backtrace/libunwind.rs:105:5
[INFO] [stdout]    1:     0x55ba1cdc9e45 - std::backtrace_rs::backtrace::trace_unsynchronized::h9cf5becacfc93fba
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x55ba1cdc9e45 - std::sys_common::backtrace::_print_fmt::h10b76d10405dbd48
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/sys_common/backtrace.rs:68:5
[INFO] [stdout]    3:     0x55ba1cdc9e45 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h6ed9e62a156d84e4
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/sys_common/backtrace.rs:44:22
[INFO] [stdout]    4:     0x55ba1cdf153b - core::fmt::rt::Argument::fmt::h645c680983f03c9f
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/core/src/fmt/rt.rs:165:63
[INFO] [stdout]    5:     0x55ba1cdf153b - core::fmt::write::h8bcd80919a02be29
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/core/src/fmt/mod.rs:1169:21
[INFO] [stdout]    6:     0x55ba1cdc767f - std::io::Write::write_fmt::h8d0c47c662cad79c
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/io/mod.rs:1835:15
[INFO] [stdout]    7:     0x55ba1cdc9c1e - std::sys_common::backtrace::_print::h6306f131a28d62b0
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/sys_common/backtrace.rs:47:5
[INFO] [stdout]    8:     0x55ba1cdc9c1e - std::sys_common::backtrace::print::h7079288e0a26dfcc
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/sys_common/backtrace.rs:34:9
[INFO] [stdout]    9:     0x55ba1cdcb649 - std::panicking::default_hook::{{closure}}::hb063ecec81a736ba
[INFO] [stdout]   10:     0x55ba1cdcb30e - std::panicking::default_hook::hd56ee406bf547b5c
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/panicking.rs:295:9
[INFO] [stdout]   11:     0x55ba1cd6684a - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::he5eacdef44c8728f
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/alloc/src/boxed.rs:2036:9
[INFO] [stdout]   12:     0x55ba1cd6684a - test::test_main::{{closure}}::h0ec9aed229e79095
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/test/src/lib.rs:137:21
[INFO] [stdout]   13:     0x55ba1cdcbc4b - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hcbd0d80e1ad4e4f9
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/alloc/src/boxed.rs:2036:9
[INFO] [stdout]   14:     0x55ba1cdcbc4b - std::panicking::rust_panic_with_hook::h624aa3ca42ebb8f2
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/panicking.rs:799:13
[INFO] [stdout]   15:     0x55ba1cdcb9c4 - std::panicking::begin_panic_handler::{{closure}}::hbc4e76194a5e287c
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/panicking.rs:664:13
[INFO] [stdout]   16:     0x55ba1cdca309 - std::sys_common::backtrace::__rust_end_short_backtrace::h847fedc9d1ff7b6d
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/sys_common/backtrace.rs:171:18
[INFO] [stdout]   17:     0x55ba1cdcb6f7 - rust_begin_unwind
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/panicking.rs:652:5
[INFO] [stdout]   18:     0x55ba1ccbb983 - core::panicking::panic_fmt::hec11a924b87ce965
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/core/src/panicking.rs:72:14
[INFO] [stdout]   19:     0x55ba1cd16dd0 - algebrars::equations::tests::equation_test::hf00329e1e4e2ded4
[INFO] [stdout]                                at /opt/rustwide/workdir/src/equations.rs:182:9
[INFO] [stdout]   20:     0x55ba1cd16f81 - algebrars::equations::tests::equation_test_single_x::he97d1389824b59a4
[INFO] [stdout]                                at /opt/rustwide/workdir/src/equations.rs:186:9
[INFO] [stdout]   21:     0x55ba1cd177bc - algebrars::equations::tests::simple_equation::h8331ecb6e65f8ddf
[INFO] [stdout]                                at /opt/rustwide/workdir/src/equations.rs:209:9
[INFO] [stdout]   22:     0x55ba1cd17767 - algebrars::equations::tests::simple_equation::{{closure}}::h63e82c9967993678
[INFO] [stdout]                                at /opt/rustwide/workdir/src/equations.rs:196:33
[INFO] [stdout]   23:     0x55ba1cd04c46 - core::ops::function::FnOnce::call_once::h3ed87e88fd4eacaa
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x55ba1cd6b22b - core::ops::function::FnOnce::call_once::h2e43a8f6f3d94b99
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   25:     0x55ba1cd6b22b - test::__rust_begin_short_backtrace::h214c9f2d2d3fee90
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/test/src/lib.rs:625:18
[INFO] [stdout]   26:     0x55ba1cd6a931 - test::run_test_in_process::{{closure}}::h510b7ba7990692a5
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/test/src/lib.rs:648:60
[INFO] [stdout]   27:     0x55ba1cd6a931 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h4157186197a93871
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   28:     0x55ba1cd6a931 - std::panicking::try::do_call::h1bf2463bccd4b28c
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/panicking.rs:559:40
[INFO] [stdout]   29:     0x55ba1cd6a931 - std::panicking::try::hd6d4808c9fab4fa5
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/panicking.rs:523:19
[INFO] [stdout]   30:     0x55ba1cd6a931 - std::panic::catch_unwind::hd5641d97d123f9f2
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/panic.rs:149:14
[INFO] [stdout]   31:     0x55ba1cd6a931 - test::run_test_in_process::hc273b71c8b878a4c
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/test/src/lib.rs:648:27
[INFO] [stdout]   32:     0x55ba1cd6a931 - test::run_test::{{closure}}::h6838df834eb8467e
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/test/src/lib.rs:569:43
[INFO] [stdout]   33:     0x55ba1cd332f4 - test::run_test::{{closure}}::h608b98ecff5665fb
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/test/src/lib.rs:599:41
[INFO] [stdout]   34:     0x55ba1cd332f4 - std::sys_common::backtrace::__rust_begin_short_backtrace::hdc4182b97d1042e9
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/sys_common/backtrace.rs:155:18
[INFO] [stdout]   35:     0x55ba1cd37d22 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h571773fd21d674c8
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/thread/mod.rs:542:17
[INFO] [stdout]   36:     0x55ba1cd37d22 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hdcd384cf2fa70ba3
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   37:     0x55ba1cd37d22 - std::panicking::try::do_call::h4f1a44bd81423be1
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/panicking.rs:559:40
[INFO] [stdout]   38:     0x55ba1cd37d22 - std::panicking::try::h5e02afcb81dcd361
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/panicking.rs:523:19
[INFO] [stdout]   39:     0x55ba1cd37d22 - std::panic::catch_unwind::h022f75775bfd8c45
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/panic.rs:149:14
[INFO] [stdout]   40:     0x55ba1cd37d22 - std::thread::Builder::spawn_unchecked_::{{closure}}::hf5a62e9e4e6df1f8
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/thread/mod.rs:541:30
[INFO] [stdout]   41:     0x55ba1cd37d22 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h6d56360aeb9509a7
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   42:     0x55ba1cdcff3b - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h7a343dc551c06baa
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/alloc/src/boxed.rs:2022:9
[INFO] [stdout]   43:     0x55ba1cdcff3b - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h30b8111cbaa644f3
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/alloc/src/boxed.rs:2022:9
[INFO] [stdout]   44:     0x55ba1cdcff3b - std::sys::pal::unix::thread::Thread::new::thread_start::h7404e134e61e7a11
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/sys/pal/unix/thread.rs:108:17
[INFO] [stdout]   45:     0x7fc65db9eac3 - <unknown>
[INFO] [stdout]   46:     0x7fc65dc2fa04 - __clone
[INFO] [stdout]   47:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     equations::tests::simple_equation
[INFO] [stdout]     factorization::tests::factorize_x
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 23 passed; 2 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--lib`
[INFO] running `Command { std: "docker" "inspect" "63f65613055d18b06cb874eb306a58b01e9aa06634827464843dc5ae0ecd3ad9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "63f65613055d18b06cb874eb306a58b01e9aa06634827464843dc5ae0ecd3ad9", kill_on_drop: false }`
[INFO] [stdout] 63f65613055d18b06cb874eb306a58b01e9aa06634827464843dc5ae0ecd3ad9
