[INFO] cloning repository https://github.com/issacnitin/cellular-automata-state-space-search
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/issacnitin/cellular-automata-state-space-search" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fissacnitin%2Fcellular-automata-state-space-search", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fissacnitin%2Fcellular-automata-state-space-search'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 64bb7a5f51a174a372a94b3bc0e5862692f120f1
[INFO] building issacnitin/cellular-automata-state-space-search against try#8b8eff55bd72abbb57167bc42222a7f91d41cb0d for pr-142134-abi-ast-error
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fissacnitin%2Fcellular-automata-state-space-search" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/issacnitin/cellular-automata-state-space-search on toolchain 8b8eff55bd72abbb57167bc42222a7f91d41cb0d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/issacnitin/cellular-automata-state-space-search
[INFO] finished tweaking git repo https://github.com/issacnitin/cellular-automata-state-space-search
[INFO] tweaked toml for git repo https://github.com/issacnitin/cellular-automata-state-space-search written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/issacnitin/cellular-automata-state-space-search 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" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9e79bfdb3f58e760dfc1d5c89ea107c00454e6a3d0f348ab45cafddb4e4e6ba9
[INFO] running `Command { std: "docker" "start" "-a" "9e79bfdb3f58e760dfc1d5c89ea107c00454e6a3d0f348ab45cafddb4e4e6ba9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9e79bfdb3f58e760dfc1d5c89ea107c00454e6a3d0f348ab45cafddb4e4e6ba9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9e79bfdb3f58e760dfc1d5c89ea107c00454e6a3d0f348ab45cafddb4e4e6ba9", kill_on_drop: false }`
[INFO] [stdout] 9e79bfdb3f58e760dfc1d5c89ea107c00454e6a3d0f348ab45cafddb4e4e6ba9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d8c1b57671b8f82ba5b4dda52daabacdcec4661284e8deef69fac8c4553eaca4
[INFO] running `Command { std: "docker" "start" "-a" "d8c1b57671b8f82ba5b4dda52daabacdcec4661284e8deef69fac8c4553eaca4", kill_on_drop: false }`
[INFO] [stderr]    Compiling cellular_automata_state_search v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/space.rs:140:84
[INFO] [stdout]     |
[INFO] [stdout] 140 |             self.cell_hashes.insert(CellHash(self.cells.len()-1, cell.get_hash()));;
[INFO] [stdout]     |                                                                                    ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]    --> src/space.rs:231:9
[INFO] [stdout]     |
[INFO] [stdout] 231 |     use super::*;
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::space::Space`
[INFO] [stdout]   --> src/rule.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | use crate::space::Space;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `CellValue` and `Cell`
[INFO] [stdout]   --> src/rule.rs:17:19
[INFO] [stdout]    |
[INFO] [stdout] 17 | use crate::cell::{Cell, CellValue};
[INFO] [stdout]    |                   ^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]    --> src/state_explorer.rs:206:9
[INFO] [stdout]     |
[INFO] [stdout] 206 |     use super::*;
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `vector_permuter::VectorPermuter`
[INFO] [stdout]  --> src/graph/op_node.rs:1:53
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::permutation::{set_permuter::SetPermuter, vector_permuter::VectorPermuter};
[INFO] [stdout]   |                                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]    --> src/permutation/set_permuter.rs:226:9
[INFO] [stdout]     |
[INFO] [stdout] 226 |     use super::*;
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::VectorPermuter`
[INFO] [stdout]    --> src/permutation/vector_permuter.rs:105:9
[INFO] [stdout]     |
[INFO] [stdout] 105 |     use super::VectorPermuter;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/permutation/set_permuter.rs:17:13
[INFO] [stdout]    |
[INFO] [stdout] 17 |         let mut muter = SetPermuter {
[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: field `current_iteration` is never read
[INFO] [stdout]   --> src/space.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub struct Space {
[INFO] [stdout]    |            ----- field in this struct
[INFO] [stdout] 30 |     current_iteration: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Space` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `get_rule`, `pop_cell`, and `len` are never used
[INFO] [stdout]    --> src/space.rs:132:12
[INFO] [stdout]     |
[INFO] [stdout] 39  | impl Space {
[INFO] [stdout]     | ---------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 132 |     pub fn get_rule(&self) -> &Rule {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 147 |     pub fn pop_cell(&mut self) {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 154 |     pub fn len(&self) -> usize {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `debug_print` and `len` are never used
[INFO] [stdout]    --> src/graph/op_node.rs:62:12
[INFO] [stdout]     |
[INFO] [stdout] 32  | impl OpNode {
[INFO] [stdout]     | ----------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 62  |     pub fn debug_print(&self) {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 102 |     pub fn len(&self) -> usize {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_leaf_node` is never used
[INFO] [stdout]    --> src/graph/op_node.rs:591:8
[INFO] [stdout]     |
[INFO] [stdout] 591 |     fn test_leaf_node(node: &mut OpNode, expected_index: usize) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `can_incr` and `incr` are never used
[INFO] [stdout]    --> src/permutation/set_permuter.rs:175:8
[INFO] [stdout]     |
[INFO] [stdout] 15  | impl SetPermuter {
[INFO] [stdout]     | ---------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 175 |     fn can_incr(&self, i_j: ((usize, usize), (usize, usize))) -> bool {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 182 |     fn incr(&self, i_j: &mut ((usize, usize), (usize, usize))) {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `VectorPermuter` is never constructed
[INFO] [stdout]  --> src/permutation/vector_permuter.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct VectorPermuter {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `VectorPermuter` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]   --> src/permutation/vector_permuter.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout] 13 | impl VectorPermuter {
[INFO] [stdout]    | ------------------- associated items in this implementation
[INFO] [stdout] 14 |     pub fn new(len: usize) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 30 |     pub fn reset(&mut self) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 40 |     pub fn has_next(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 49 |     pub fn generate_next(&mut self) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 79 |     fn generate_child(&mut self) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 89 |     pub fn get_vector(&self) -> Vec<usize> {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 99 |     fn replace(&mut self) {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `expectedValue` should have a snake case name
[INFO] [stdout]    --> src/space.rs:158:40
[INFO] [stdout]     |
[INFO] [stdout] 158 |     pub fn find_number_of_cells(&self, expectedValue: CellValue) -> usize {
[INFO] [stdout]     |                                        ^^^^^^^^^^^^^ help: convert the identifier to snake case: `expected_value`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.44s
[INFO] running `Command { std: "docker" "inspect" "d8c1b57671b8f82ba5b4dda52daabacdcec4661284e8deef69fac8c4553eaca4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d8c1b57671b8f82ba5b4dda52daabacdcec4661284e8deef69fac8c4553eaca4", kill_on_drop: false }`
[INFO] [stdout] d8c1b57671b8f82ba5b4dda52daabacdcec4661284e8deef69fac8c4553eaca4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a1559dbdb2bb75de15865463711f289b0da0daead3e118808c07881d63fbe975
[INFO] running `Command { std: "docker" "start" "-a" "a1559dbdb2bb75de15865463711f289b0da0daead3e118808c07881d63fbe975", kill_on_drop: false }`
[INFO] [stderr]    Compiling cellular_automata_state_search v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/space.rs:140:84
[INFO] [stdout]     |
[INFO] [stdout] 140 |             self.cell_hashes.insert(CellHash(self.cells.len()-1, cell.get_hash()));;
[INFO] [stdout]     |                                                                                    ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::space::Space`
[INFO] [stdout]   --> src/rule.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | use crate::space::Space;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `CellValue` and `Cell`
[INFO] [stdout]   --> src/rule.rs:17:19
[INFO] [stdout]    |
[INFO] [stdout] 17 | use crate::cell::{Cell, CellValue};
[INFO] [stdout]    |                   ^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `vector_permuter::VectorPermuter`
[INFO] [stdout]  --> src/graph/op_node.rs:1:53
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::permutation::{set_permuter::SetPermuter, vector_permuter::VectorPermuter};
[INFO] [stdout]   |                                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]    --> src/permutation/set_permuter.rs:240:9
[INFO] [stdout]     |
[INFO] [stdout] 238 |           return;
[INFO] [stdout]     |           ------ any code following this expression is unreachable
[INFO] [stdout] 239 |
[INFO] [stdout] 240 | /         let expected: Vec<Vec<usize>> = vec![
[INFO] [stdout] 241 | |             vec![2, 1, 0, 3],
[INFO] [stdout] 242 | |             vec![2, 3, 0, 1],
[INFO] [stdout] 243 | |             vec![3, 1, 2, 0],
[INFO] [stdout] 244 | |             vec![0, 2, 1, 3],
[INFO] [stdout] 245 | |             vec![0, 3, 2, 1]
[INFO] [stdout] 246 | |         ];
[INFO] [stdout]     | |__________^ unreachable statement
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `explorer` is never read
[INFO] [stdout]    --> src/state_explorer.rs:224:9
[INFO] [stdout]     |
[INFO] [stdout] 224 |         explorer = StateExplorer::new(2, 2, vec![1,3,5,7,9,11,13,15]);
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/permutation/set_permuter.rs:17:13
[INFO] [stdout]    |
[INFO] [stdout] 17 |         let mut muter = SetPermuter {
[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: field `current_iteration` is never read
[INFO] [stdout]   --> src/space.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub struct Space {
[INFO] [stdout]    |            ----- field in this struct
[INFO] [stdout] 30 |     current_iteration: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Space` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `get_rule` and `pop_cell` are never used
[INFO] [stdout]    --> src/space.rs:132:12
[INFO] [stdout]     |
[INFO] [stdout] 39  | impl Space {
[INFO] [stdout]     | ---------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 132 |     pub fn get_rule(&self) -> &Rule {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 147 |     pub fn pop_cell(&mut self) {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `debug_print` and `len` are never used
[INFO] [stdout]    --> src/graph/op_node.rs:62:12
[INFO] [stdout]     |
[INFO] [stdout] 32  | impl OpNode {
[INFO] [stdout]     | ----------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 62  |     pub fn debug_print(&self) {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 102 |     pub fn len(&self) -> usize {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `can_incr` and `incr` are never used
[INFO] [stdout]    --> src/permutation/set_permuter.rs:175:8
[INFO] [stdout]     |
[INFO] [stdout] 15  | impl SetPermuter {
[INFO] [stdout]     | ---------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 175 |     fn can_incr(&self, i_j: ((usize, usize), (usize, usize))) -> bool {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 182 |     fn incr(&self, i_j: &mut ((usize, usize), (usize, usize))) {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `reset` is never used
[INFO] [stdout]   --> src/permutation/vector_permuter.rs:30:12
[INFO] [stdout]    |
[INFO] [stdout] 13 | impl VectorPermuter {
[INFO] [stdout]    | ------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 30 |     pub fn reset(&mut self) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `expectedValue` should have a snake case name
[INFO] [stdout]    --> src/space.rs:158:40
[INFO] [stdout]     |
[INFO] [stdout] 158 |     pub fn find_number_of_cells(&self, expectedValue: CellValue) -> usize {
[INFO] [stdout]     |                                        ^^^^^^^^^^^^^ help: convert the identifier to snake case: `expected_value`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.48s
[INFO] running `Command { std: "docker" "inspect" "a1559dbdb2bb75de15865463711f289b0da0daead3e118808c07881d63fbe975", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a1559dbdb2bb75de15865463711f289b0da0daead3e118808c07881d63fbe975", kill_on_drop: false }`
[INFO] [stdout] a1559dbdb2bb75de15865463711f289b0da0daead3e118808c07881d63fbe975