[INFO] cloning repository https://github.com/Swiftaff/rust_ray_tracer_challenge
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Swiftaff/rust_ray_tracer_challenge" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSwiftaff%2Frust_ray_tracer_challenge"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSwiftaff%2Frust_ray_tracer_challenge'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d2220b4529a3524fb80b3350800e9a2998606444
[INFO] checking Swiftaff/rust_ray_tracer_challenge against try#89c05fd3cc6404a13e1bd71450c6132a2755fa4b for pr-69741
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSwiftaff%2Frust_ray_tracer_challenge" "/workspace/builds/worker-1/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Swiftaff/rust_ray_tracer_challenge on toolchain 89c05fd3cc6404a13e1bd71450c6132a2755fa4b
[INFO] running `"/workspace/cargo-home/bin/cargo" "+89c05fd3cc6404a13e1bd71450c6132a2755fa4b" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/Swiftaff/rust_ray_tracer_challenge
[INFO] finished tweaking git repo https://github.com/Swiftaff/rust_ray_tracer_challenge
[INFO] tweaked toml for git repo https://github.com/Swiftaff/rust_ray_tracer_challenge written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/Swiftaff/rust_ray_tracer_challenge already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+89c05fd3cc6404a13e1bd71450c6132a2755fa4b" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+89c05fd3cc6404a13e1bd71450c6132a2755fa4b" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 739d1a15be1e3053fea5d8182eaaeea9fad52561f1c9355bea321024baac1890
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "739d1a15be1e3053fea5d8182eaaeea9fad52561f1c9355bea321024baac1890"`
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]     Checking chrono v0.4.11
[INFO] [stderr]     Checking rust_ray_tracer_challenge v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `w`
[INFO] [stderr]   --> src/canvas.rs:68:9
[INFO] [stderr]    |
[INFO] [stderr] 68 |     let w = c.width;
[INFO] [stderr]    |         ^ help: consider prefixing with an underscore: `_w`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `last_space_index` is never read
[INFO] [stderr]   --> src/canvas.rs:76:17
[INFO] [stderr]    |
[INFO] [stderr] 76 |         let mut last_space_index: usize = 0;
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `this_row_truncated` is never read
[INFO] [stderr]   --> src/canvas.rs:78:17
[INFO] [stderr]    |
[INFO] [stderr] 78 |         let mut this_row_truncated: String = String::from("");
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `pixel_get`
[INFO] [stderr]   --> src/canvas.rs:38:4
[INFO] [stderr]    |
[INFO] [stderr] 38 | fn pixel_get(canvas: PixelCanvas, x: u32, y: u32) -> tuples::Color {
[INFO] [stderr]    |    ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `test_color`
[INFO] [stderr]   --> src/fire_canon.rs:74:4
[INFO] [stderr]    |
[INFO] [stderr] 74 | fn test_color(mut c: canvas::PixelCanvas, i: u32, col: tuples::Color) -> String {
[INFO] [stderr]    |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `IDENTITY_MATRIX`
[INFO] [stderr]  --> src/matrices.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | / const IDENTITY_MATRIX: Matrix4 = [
[INFO] [stderr] 4 | |     [1.0, 0.0, 0.0, 0.0],
[INFO] [stderr] 5 | |     [0.0, 1.0, 0.0, 0.0],
[INFO] [stderr] 6 | |     [0.0, 0.0, 1.0, 0.0],
[INFO] [stderr] 7 | |     [0.0, 0.0, 0.0, 1.0],
[INFO] [stderr] 8 | | ];
[INFO] [stderr]   | |__^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `Matrix2`
[INFO] [stderr]   --> src/matrices.rs:10:1
[INFO] [stderr]    |
[INFO] [stderr] 10 | type Matrix2 = [[f64; 2]; 2];
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `Matrix3`
[INFO] [stderr]   --> src/matrices.rs:11:1
[INFO] [stderr]    |
[INFO] [stderr] 11 | type Matrix3 = [[f64; 3]; 3];
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `Matrix4`
[INFO] [stderr]   --> src/matrices.rs:12:1
[INFO] [stderr]    |
[INFO] [stderr] 12 | type Matrix4 = [[f64; 4]; 4];
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `create_matrix4`
[INFO] [stderr]   --> src/matrices.rs:14:8
[INFO] [stderr]    |
[INFO] [stderr] 14 | pub fn create_matrix4() -> Matrix4 {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `create_matrix3`
[INFO] [stderr]   --> src/matrices.rs:20:8
[INFO] [stderr]    |
[INFO] [stderr] 20 | pub fn create_matrix3() -> Matrix3 {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `create_matrix2`
[INFO] [stderr]   --> src/matrices.rs:26:8
[INFO] [stderr]    |
[INFO] [stderr] 26 | pub fn create_matrix2() -> Matrix2 {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `getM2`
[INFO] [stderr]   --> src/matrices.rs:32:8
[INFO] [stderr]    |
[INFO] [stderr] 32 | pub fn getM2(m: Matrix2, y: usize, x: usize) -> f64 {
[INFO] [stderr]    |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `getM3`
[INFO] [stderr]   --> src/matrices.rs:36:8
[INFO] [stderr]    |
[INFO] [stderr] 36 | pub fn getM3(m: Matrix3, y: usize, x: usize) -> f64 {
[INFO] [stderr]    |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `getM4`
[INFO] [stderr]   --> src/matrices.rs:39:8
[INFO] [stderr]    |
[INFO] [stderr] 39 | pub fn getM4(m: Matrix4, y: usize, x: usize) -> f64 {
[INFO] [stderr]    |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_bool_equal_m4`
[INFO] [stderr]   --> src/matrices.rs:43:8
[INFO] [stderr]    |
[INFO] [stderr] 43 | pub fn get_bool_equal_m4(m1: Matrix4, m2: Matrix4) -> bool {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_bool_equal_m3`
[INFO] [stderr]   --> src/matrices.rs:57:8
[INFO] [stderr]    |
[INFO] [stderr] 57 | pub fn get_bool_equal_m3(m1: Matrix3, m2: Matrix3) -> bool {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_bool_equal_m2`
[INFO] [stderr]   --> src/matrices.rs:71:8
[INFO] [stderr]    |
[INFO] [stderr] 71 | pub fn get_bool_equal_m2(m1: Matrix2, m2: Matrix2) -> bool {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `matrix4_multiply`
[INFO] [stderr]   --> src/matrices.rs:85:8
[INFO] [stderr]    |
[INFO] [stderr] 85 | pub fn matrix4_multiply(m1: Matrix4, m2: Matrix4) -> Matrix4 {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `matrix4_transpose`
[INFO] [stderr]   --> src/matrices.rs:99:8
[INFO] [stderr]    |
[INFO] [stderr] 99 | pub fn matrix4_transpose(m: Matrix4) -> Matrix4 {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `matrix2_determinant`
[INFO] [stderr]    --> src/matrices.rs:109:8
[INFO] [stderr]     |
[INFO] [stderr] 109 | pub fn matrix2_determinant(m: Matrix2) -> f64 {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `matrix3_determinant`
[INFO] [stderr]    --> src/matrices.rs:113:8
[INFO] [stderr]     |
[INFO] [stderr] 113 | pub fn matrix3_determinant(m: Matrix3) -> f64 {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `matrix4_determinant`
[INFO] [stderr]    --> src/matrices.rs:121:8
[INFO] [stderr]     |
[INFO] [stderr] 121 | pub fn matrix4_determinant(m: Matrix4) -> f64 {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `matrix3_minor`
[INFO] [stderr]    --> src/matrices.rs:129:8
[INFO] [stderr]     |
[INFO] [stderr] 129 | pub fn matrix3_minor(m: Matrix3, row_to_delete: usize, col_to_delete: usize) -> f64 {
[INFO] [stderr]     |        ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `matrix4_minor`
[INFO] [stderr]    --> src/matrices.rs:133:8
[INFO] [stderr]     |
[INFO] [stderr] 133 | pub fn matrix4_minor(m: Matrix4, row_to_delete: usize, col_to_delete: usize) -> f64 {
[INFO] [stderr]     |        ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `matrix3_cofactor`
[INFO] [stderr]    --> src/matrices.rs:137:8
[INFO] [stderr]     |
[INFO] [stderr] 137 | pub fn matrix3_cofactor(m: Matrix3, row: usize, col: usize) -> f64 {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `matrix4_cofactor`
[INFO] [stderr]    --> src/matrices.rs:146:8
[INFO] [stderr]     |
[INFO] [stderr] 146 | pub fn matrix4_cofactor(m: Matrix4, row: usize, col: usize) -> f64 {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `matrix3_submatrix2`
[INFO] [stderr]    --> src/matrices.rs:155:8
[INFO] [stderr]     |
[INFO] [stderr] 155 | pub fn matrix3_submatrix2(m: Matrix3, row_to_delete: usize, col_to_delete: usize) -> Matrix2 {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `matrix4_submatrix3`
[INFO] [stderr]    --> src/matrices.rs:171:8
[INFO] [stderr]     |
[INFO] [stderr] 171 | pub fn matrix4_submatrix3(m: Matrix4, row_to_delete: usize, col_to_delete: usize) -> Matrix3 {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `matrix4_tuple_multiply`
[INFO] [stderr]    --> src/matrices.rs:187:8
[INFO] [stderr]     |
[INFO] [stderr] 187 | pub fn matrix4_tuple_multiply(m1: Matrix4, t: tuples::Tuple) -> tuples::Tuple {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `matrix3_multiply`
[INFO] [stderr]    --> src/matrices.rs:207:8
[INFO] [stderr]     |
[INFO] [stderr] 207 | pub fn matrix3_multiply(m1: Matrix3, m2: Matrix3) -> Matrix3 {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `getM2` should have a snake case name
[INFO] [stderr]   --> src/matrices.rs:32:8
[INFO] [stderr]    |
[INFO] [stderr] 32 | pub fn getM2(m: Matrix2, y: usize, x: usize) -> f64 {
[INFO] [stderr]    |        ^^^^^ help: convert the identifier to snake case: `get_m2`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `getM3` should have a snake case name
[INFO] [stderr]   --> src/matrices.rs:36:8
[INFO] [stderr]    |
[INFO] [stderr] 36 | pub fn getM3(m: Matrix3, y: usize, x: usize) -> f64 {
[INFO] [stderr]    |        ^^^^^ help: convert the identifier to snake case: `get_m3`
[INFO] [stderr] 
[INFO] [stderr] warning: function `getM4` should have a snake case name
[INFO] [stderr]   --> src/matrices.rs:39:8
[INFO] [stderr]    |
[INFO] [stderr] 39 | pub fn getM4(m: Matrix4, y: usize, x: usize) -> f64 {
[INFO] [stderr]    |        ^^^^^ help: convert the identifier to snake case: `get_m4`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `areEqual` should have a snake case name
[INFO] [stderr]   --> src/matrices.rs:44:13
[INFO] [stderr]    |
[INFO] [stderr] 44 |     let mut areEqual = true;
[INFO] [stderr]    |             ^^^^^^^^ help: convert the identifier to snake case: `are_equal`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `areEqual` should have a snake case name
[INFO] [stderr]   --> src/matrices.rs:58:13
[INFO] [stderr]    |
[INFO] [stderr] 58 |     let mut areEqual = true;
[INFO] [stderr]    |             ^^^^^^^^ help: convert the identifier to snake case: `are_equal`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `areEqual` should have a snake case name
[INFO] [stderr]   --> src/matrices.rs:72:13
[INFO] [stderr]    |
[INFO] [stderr] 72 |     let mut areEqual = true;
[INFO] [stderr]    |             ^^^^^^^^ help: convert the identifier to snake case: `are_equal`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `thisResult` should have a snake case name
[INFO] [stderr]   --> src/matrices.rs:89:21
[INFO] [stderr]    |
[INFO] [stderr] 89 |             let mut thisResult = 0.0;
[INFO] [stderr]    |                     ^^^^^^^^^^ help: convert the identifier to snake case: `this_result`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `thisResult` should have a snake case name
[INFO] [stderr]    --> src/matrices.rs:192:21
[INFO] [stderr]     |
[INFO] [stderr] 192 |             let mut thisResult = 0.0;
[INFO] [stderr]     |                     ^^^^^^^^^^ help: convert the identifier to snake case: `this_result`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `thisResult` should have a snake case name
[INFO] [stderr]    --> src/matrices.rs:211:21
[INFO] [stderr]     |
[INFO] [stderr] 211 |             let mut thisResult = 0.0;
[INFO] [stderr]     |                     ^^^^^^^^^^ help: convert the identifier to snake case: `this_result`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `w`
[INFO] [stderr]   --> src/canvas.rs:68:9
[INFO] [stderr]    |
[INFO] [stderr] 68 |     let w = c.width;
[INFO] [stderr]    |         ^ help: consider prefixing with an underscore: `_w`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `last_space_index` is never read
[INFO] [stderr]   --> src/canvas.rs:76:17
[INFO] [stderr]    |
[INFO] [stderr] 76 |         let mut last_space_index: usize = 0;
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `this_row_truncated` is never read
[INFO] [stderr]   --> src/canvas.rs:78:17
[INFO] [stderr]    |
[INFO] [stderr] 78 |         let mut this_row_truncated: String = String::from("");
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `d`
[INFO] [stderr]    --> src/matrices.rs:465:13
[INFO] [stderr]     |
[INFO] [stderr] 465 |         let d = matrix2_determinant(s);
[INFO] [stderr]     |             ^ help: consider prefixing with an underscore: `_d`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `pixel_get`
[INFO] [stderr]   --> src/canvas.rs:38:4
[INFO] [stderr]    |
[INFO] [stderr] 38 | fn pixel_get(canvas: PixelCanvas, x: u32, y: u32) -> tuples::Color {
[INFO] [stderr]    |    ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `test_color`
[INFO] [stderr]   --> src/fire_canon.rs:74:4
[INFO] [stderr]    |
[INFO] [stderr] 74 | fn test_color(mut c: canvas::PixelCanvas, i: u32, col: tuples::Color) -> String {
[INFO] [stderr]    |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `matrix3_multiply`
[INFO] [stderr]    --> src/matrices.rs:207:8
[INFO] [stderr]     |
[INFO] [stderr] 207 | pub fn matrix3_multiply(m1: Matrix3, m2: Matrix3) -> Matrix3 {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `getM2` should have a snake case name
[INFO] [stderr]   --> src/matrices.rs:32:8
[INFO] [stderr]    |
[INFO] [stderr] 32 | pub fn getM2(m: Matrix2, y: usize, x: usize) -> f64 {
[INFO] [stderr]    |        ^^^^^ help: convert the identifier to snake case: `get_m2`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `getM3` should have a snake case name
[INFO] [stderr]   --> src/matrices.rs:36:8
[INFO] [stderr]    |
[INFO] [stderr] 36 | pub fn getM3(m: Matrix3, y: usize, x: usize) -> f64 {
[INFO] [stderr]    |        ^^^^^ help: convert the identifier to snake case: `get_m3`
[INFO] [stderr] 
[INFO] [stderr] warning: function `getM4` should have a snake case name
[INFO] [stderr]   --> src/matrices.rs:39:8
[INFO] [stderr]    |
[INFO] [stderr] 39 | pub fn getM4(m: Matrix4, y: usize, x: usize) -> f64 {
[INFO] [stderr]    |        ^^^^^ help: convert the identifier to snake case: `get_m4`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `areEqual` should have a snake case name
[INFO] [stderr]   --> src/matrices.rs:44:13
[INFO] [stderr]    |
[INFO] [stderr] 44 |     let mut areEqual = true;
[INFO] [stderr]    |             ^^^^^^^^ help: convert the identifier to snake case: `are_equal`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `areEqual` should have a snake case name
[INFO] [stderr]   --> src/matrices.rs:58:13
[INFO] [stderr]    |
[INFO] [stderr] 58 |     let mut areEqual = true;
[INFO] [stderr]    |             ^^^^^^^^ help: convert the identifier to snake case: `are_equal`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `areEqual` should have a snake case name
[INFO] [stderr]   --> src/matrices.rs:72:13
[INFO] [stderr]    |
[INFO] [stderr] 72 |     let mut areEqual = true;
[INFO] [stderr]    |             ^^^^^^^^ help: convert the identifier to snake case: `are_equal`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `thisResult` should have a snake case name
[INFO] [stderr]   --> src/matrices.rs:89:21
[INFO] [stderr]    |
[INFO] [stderr] 89 |             let mut thisResult = 0.0;
[INFO] [stderr]    |                     ^^^^^^^^^^ help: convert the identifier to snake case: `this_result`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `thisResult` should have a snake case name
[INFO] [stderr]    --> src/matrices.rs:192:21
[INFO] [stderr]     |
[INFO] [stderr] 192 |             let mut thisResult = 0.0;
[INFO] [stderr]     |                     ^^^^^^^^^^ help: convert the identifier to snake case: `this_result`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `thisResult` should have a snake case name
[INFO] [stderr]    --> src/matrices.rs:211:21
[INFO] [stderr]     |
[INFO] [stderr] 211 |             let mut thisResult = 0.0;
[INFO] [stderr]     |                     ^^^^^^^^^^ help: convert the identifier to snake case: `this_result`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.36s
[INFO] running `"docker" "inspect" "739d1a15be1e3053fea5d8182eaaeea9fad52561f1c9355bea321024baac1890"`
[INFO] running `"docker" "rm" "-f" "739d1a15be1e3053fea5d8182eaaeea9fad52561f1c9355bea321024baac1890"`
[INFO] [stdout] 739d1a15be1e3053fea5d8182eaaeea9fad52561f1c9355bea321024baac1890