[INFO] cloning repository https://github.com/SE-691-Graphing-Calculator/esoteric_nonsense
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/SE-691-Graphing-Calculator/esoteric_nonsense" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSE-691-Graphing-Calculator%2Fesoteric_nonsense", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSE-691-Graphing-Calculator%2Fesoteric_nonsense'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] eebb8c856f69aabade6ff0ad99095d0dd967dc3a
[INFO] testing SE-691-Graphing-Calculator/esoteric_nonsense against try#ce59db7a1b1b012fb2793c4641c1bdecad7a128b for pr-85530
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSE-691-Graphing-Calculator%2Fesoteric_nonsense" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/SE-691-Graphing-Calculator/esoteric_nonsense on toolchain ce59db7a1b1b012fb2793c4641c1bdecad7a128b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/SE-691-Graphing-Calculator/esoteric_nonsense
[INFO] finished tweaking git repo https://github.com/SE-691-Graphing-Calculator/esoteric_nonsense
[INFO] tweaked toml for git repo https://github.com/SE-691-Graphing-Calculator/esoteric_nonsense written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/SE-691-Graphing-Calculator/esoteric_nonsense already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: file found to be present in multiple build targets: /workspace/builds/worker-4/source/src/main.rs
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fee02f239a534ad9caa9336ad7f991f7c68f5faa4090be860bb2999f680236ae
[INFO] running `Command { std: "docker" "start" "-a" "fee02f239a534ad9caa9336ad7f991f7c68f5faa4090be860bb2999f680236ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fee02f239a534ad9caa9336ad7f991f7c68f5faa4090be860bb2999f680236ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fee02f239a534ad9caa9336ad7f991f7c68f5faa4090be860bb2999f680236ae", kill_on_drop: false }`
[INFO] [stdout] fee02f239a534ad9caa9336ad7f991f7c68f5faa4090be860bb2999f680236ae
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 75a582ddcff3aeaee0c618ec5f3977710c818f8cccf3b532c4587b6617293544
[INFO] running `Command { std: "docker" "start" "-a" "75a582ddcff3aeaee0c618ec5f3977710c818f8cccf3b532c4587b6617293544", kill_on_drop: false }`
[INFO] [stderr] warning: file found to be present in multiple build targets: /opt/rustwide/workdir/src/main.rs
[INFO] [stderr]    Compiling libc v0.2.86
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]    Compiling rand_core v0.6.1
[INFO] [stderr]    Compiling rand_chacha v0.3.0
[INFO] [stderr]    Compiling rand v0.8.3
[INFO] [stderr]    Compiling eq_solve v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `y_lower`
[INFO] [stdout]    --> src/main.rs:163:85
[INFO] [stdout]     |
[INFO] [stdout] 163 | pub fn func_of_x (expression: String, x_lower: f64, x_upper: f64, x_precision: f64, y_lower: f64, y_upper: f64) -> Vec<f64> {
[INFO] [stdout]     |                                                                                     ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_y_lower`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y_upper`
[INFO] [stdout]    --> src/main.rs:163:99
[INFO] [stdout]     |
[INFO] [stdout] 163 | pub fn func_of_x (expression: String, x_lower: f64, x_upper: f64, x_precision: f64, y_lower: f64, y_upper: f64) -> Vec<f64> {
[INFO] [stdout]     |                                                                                                   ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_y_upper`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `result` is never read
[INFO] [stdout]  --> src/matrix.rs:6:13
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let mut result: String = "".to_string();
[INFO] [stdout]   |             ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rr_mat_b`
[INFO] [stdout]   --> src/matrix.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 36 |     let rr_mat_b = &mut r_mat_b;
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_rr_mat_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/matrix.rs:9:13
[INFO] [stdout]   |
[INFO] [stdout] 9 |         let mut is_float_a: bool;
[INFO] [stdout]   |             ----^^^^^^^^^^
[INFO] [stdout]   |             |
[INFO] [stdout]   |             help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/matrix.rs:38:13
[INFO] [stdout]    |
[INFO] [stdout] 38 |         let mut is_float_a: bool;
[INFO] [stdout]    |             ----^^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y_lower`
[INFO] [stdout]    --> src/main.rs:163:85
[INFO] [stdout]     |
[INFO] [stdout] 163 | pub fn func_of_x (expression: String, x_lower: f64, x_upper: f64, x_precision: f64, y_lower: f64, y_upper: f64) -> Vec<f64> {
[INFO] [stdout]     |                                                                                     ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_y_lower`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/matrix.rs:39:13
[INFO] [stdout]    |
[INFO] [stdout] 39 |         let mut is_float_b: bool;
[INFO] [stdout]    |             ----^^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y_upper`
[INFO] [stdout]    --> src/main.rs:163:99
[INFO] [stdout]     |
[INFO] [stdout] 163 | pub fn func_of_x (expression: String, x_lower: f64, x_upper: f64, x_precision: f64, y_lower: f64, y_upper: f64) -> Vec<f64> {
[INFO] [stdout]     |                                                                                                   ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_y_upper`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `result` is never read
[INFO] [stdout]  --> src/matrix.rs:6:13
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let mut result: String = "".to_string();
[INFO] [stdout]   |             ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rr_mat_b`
[INFO] [stdout]   --> src/matrix.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 36 |     let rr_mat_b = &mut r_mat_b;
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_rr_mat_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/main.rs:49:27
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub unsafe extern "C" fn matrices(op_ptr: *const c_char, cmd_1_ptr: *const c_char, mat_1_ptr: *const c_char, cmd_2_ptr: *const c_char, mat_2_ptr: *const c_char, scalar_1: f64, scalar_2: f64, b_empty: *const c_char) -> *mut c_cha...
[INFO] [stdout]    | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- because it's nested under this `unsafe` fn
[INFO] [stdout] 49 |     let op_c_str: &CStr = unsafe { CStr::from_ptr(op_ptr) };
[INFO] [stdout]    |                           ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_unsafe)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/main.rs:50:30
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub unsafe extern "C" fn matrices(op_ptr: *const c_char, cmd_1_ptr: *const c_char, mat_1_ptr: *const c_char, cmd_2_ptr: *const c_char, mat_2_ptr: *const c_char, scalar_1: f64, scalar_2: f64, b_empty: *const c_char) -> *mut c_cha...
[INFO] [stdout]    | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- because it's nested under this `unsafe` fn
[INFO] [stdout] 49 |     let op_c_str: &CStr = unsafe { CStr::from_ptr(op_ptr) };
[INFO] [stdout] 50 |     let cmd_1_c_str: &CStr = unsafe { CStr::from_ptr(cmd_1_ptr) };
[INFO] [stdout]    |                              ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/main.rs:51:30
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub unsafe extern "C" fn matrices(op_ptr: *const c_char, cmd_1_ptr: *const c_char, mat_1_ptr: *const c_char, cmd_2_ptr: *const c_char, mat_2_ptr: *const c_char, scalar_1: f64, scalar_2: f64, b_empty: *const c_char) -> *mut c_cha...
[INFO] [stdout]    | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- because it's nested under this `unsafe` fn
[INFO] [stdout] ...
[INFO] [stdout] 51 |     let mat_1_c_str: &CStr = unsafe { CStr::from_ptr(mat_1_ptr) };
[INFO] [stdout]    |                              ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/main.rs:52:30
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub unsafe extern "C" fn matrices(op_ptr: *const c_char, cmd_1_ptr: *const c_char, mat_1_ptr: *const c_char, cmd_2_ptr: *const c_char, mat_2_ptr: *const c_char, scalar_1: f64, scalar_2: f64, b_empty: *const c_char) -> *mut c_cha...
[INFO] [stdout]    | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- because it's nested under this `unsafe` fn
[INFO] [stdout] ...
[INFO] [stdout] 52 |     let cmd_2_c_str: &CStr = unsafe { CStr::from_ptr(cmd_2_ptr) };
[INFO] [stdout]    |                              ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/main.rs:53:30
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub unsafe extern "C" fn matrices(op_ptr: *const c_char, cmd_1_ptr: *const c_char, mat_1_ptr: *const c_char, cmd_2_ptr: *const c_char, mat_2_ptr: *const c_char, scalar_1: f64, scalar_2: f64, b_empty: *const c_char) -> *mut c_cha...
[INFO] [stdout]    | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- because it's nested under this `unsafe` fn
[INFO] [stdout] ...
[INFO] [stdout] 53 |     let mat_2_c_str: &CStr = unsafe { CStr::from_ptr(mat_2_ptr) };
[INFO] [stdout]    |                              ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/main.rs:55:32
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub unsafe extern "C" fn matrices(op_ptr: *const c_char, cmd_1_ptr: *const c_char, mat_1_ptr: *const c_char, cmd_2_ptr: *const c_char, mat_2_ptr: *const c_char, scalar_1: f64, scalar_2: f64, b_empty: *const c_char) -> *mut c_cha...
[INFO] [stdout]    | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- because it's nested under this `unsafe` fn
[INFO] [stdout] ...
[INFO] [stdout] 55 |     let b_empty_c_str: &CStr = unsafe { CStr::from_ptr(b_empty) };
[INFO] [stdout]    |                                ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/main.rs:73:34
[INFO] [stdout]    |
[INFO] [stdout] 72 | pub unsafe extern "C" fn conversions(conversion_type: *const c_char, from_unit: *const c_char, to_unit: *const c_char, units: f64) -> f64 {
[INFO] [stdout]    | ----------------------------------------------------------------------------------------------------------------------------------------- because it's nested under this `unsafe` fn
[INFO] [stdout] 73 |     let conv_type_c_str: &CStr = unsafe { CStr::from_ptr(conversion_type) };
[INFO] [stdout]    |                                  ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/main.rs:74:34
[INFO] [stdout]    |
[INFO] [stdout] 72 | pub unsafe extern "C" fn conversions(conversion_type: *const c_char, from_unit: *const c_char, to_unit: *const c_char, units: f64) -> f64 {
[INFO] [stdout]    | ----------------------------------------------------------------------------------------------------------------------------------------- because it's nested under this `unsafe` fn
[INFO] [stdout] 73 |     let conv_type_c_str: &CStr = unsafe { CStr::from_ptr(conversion_type) };
[INFO] [stdout] 74 |     let from_unit_c_str: &CStr = unsafe { CStr::from_ptr(from_unit) };
[INFO] [stdout]    |                                  ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/main.rs:75:32
[INFO] [stdout]    |
[INFO] [stdout] 72 | pub unsafe extern "C" fn conversions(conversion_type: *const c_char, from_unit: *const c_char, to_unit: *const c_char, units: f64) -> f64 {
[INFO] [stdout]    | ----------------------------------------------------------------------------------------------------------------------------------------- because it's nested under this `unsafe` fn
[INFO] [stdout] ...
[INFO] [stdout] 75 |     let to_unit_c_str: &CStr = unsafe { CStr::from_ptr(to_unit) };
[INFO] [stdout]    |                                ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/main.rs:88:30
[INFO] [stdout]    |
[INFO] [stdout] 87 | pub unsafe extern "C" fn calculate_for_graph(expression_input: *const c_char, some_x: f64) -> f64 {
[INFO] [stdout]    | ------------------------------------------------------------------------------------------------- because it's nested under this `unsafe` fn
[INFO] [stdout] 88 |     let input_c_str: &CStr = unsafe { CStr::from_ptr(expression_input) };
[INFO] [stdout]    |                              ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/main.rs:97:30
[INFO] [stdout]    |
[INFO] [stdout] 96 | pub unsafe extern "C" fn calculate(input: *const c_char) -> f64 {
[INFO] [stdout]    | --------------------------------------------------------------- because it's nested under this `unsafe` fn
[INFO] [stdout] 97 |     let input_c_str: &CStr = unsafe { CStr::from_ptr(input)};
[INFO] [stdout]    |                              ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/main.rs:104:30
[INFO] [stdout]     |
[INFO] [stdout] 103 | pub unsafe extern "C" fn calculate_string(input: *const c_char) -> *mut c_char {
[INFO] [stdout]     | ------------------------------------------------------------------------------ because it's nested under this `unsafe` fn
[INFO] [stdout] 104 |     let input_c_str: &CStr = unsafe { CStr::from_ptr(input)};
[INFO] [stdout]     |                              ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `WholeNumber`
[INFO] [stdout]  --> src/s_y.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     WholeNumber(i64),
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `to_string_ast`
[INFO] [stdout]    --> src/s_y.rs:622:12
[INFO] [stdout]     |
[INFO] [stdout] 622 |     pub fn to_string_ast(&self) -> String {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `lower_upper_decomposition`
[INFO] [stdout]    --> src/matrix.rs:179:8
[INFO] [stdout]     |
[INFO] [stdout] 179 | pub fn lower_upper_decomposition(matrix: &Vec<Vec<f64>>) -> (Vec<Vec<f64>>, Vec<Vec<f64>>, Vec<Vec<f64>>, Vec<Vec<f64>>,) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `pivotize_matrix`
[INFO] [stdout]    --> src/matrix.rs:211:8
[INFO] [stdout]     |
[INFO] [stdout] 211 | pub fn pivotize_matrix(matrix: &Vec<Vec<f64>>) -> Vec<Vec<f64>> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `identity_matrix`
[INFO] [stdout]    --> src/matrix.rs:241:8
[INFO] [stdout]     |
[INFO] [stdout] 241 | pub fn identity_matrix(n: usize) -> Vec<Vec<f64>> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `is_square`
[INFO] [stdout]    --> src/matrix.rs:498:8
[INFO] [stdout]     |
[INFO] [stdout] 498 | pub fn is_square(matrix: &Vec<Vec<f64>>) -> bool {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `is_rref_compat`
[INFO] [stdout]    --> src/matrix.rs:502:8
[INFO] [stdout]     |
[INFO] [stdout] 502 | pub fn is_rref_compat(matrix: &Vec<Vec<f64>>) -> bool {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/matrix.rs:9:13
[INFO] [stdout]   |
[INFO] [stdout] 9 |         let mut is_float_a: bool;
[INFO] [stdout]   |             ----^^^^^^^^^^
[INFO] [stdout]   |             |
[INFO] [stdout]   |             help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/matrix.rs:38:13
[INFO] [stdout]    |
[INFO] [stdout] 38 |         let mut is_float_a: bool;
[INFO] [stdout]    |             ----^^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/matrix.rs:39:13
[INFO] [stdout]    |
[INFO] [stdout] 39 |         let mut is_float_b: bool;
[INFO] [stdout]    |             ----^^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/main.rs:49:27
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub unsafe extern "C" fn matrices(op_ptr: *const c_char, cmd_1_ptr: *const c_char, mat_1_ptr: *const c_char, cmd_2_ptr: *const c_char, mat_2_ptr: *const c_char, scalar_1: f64, scalar_2: f64, b_empty: *const c_char) -> *mut c_cha...
[INFO] [stdout]    | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- because it's nested under this `unsafe` fn
[INFO] [stdout] 49 |     let op_c_str: &CStr = unsafe { CStr::from_ptr(op_ptr) };
[INFO] [stdout]    |                           ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_unsafe)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/main.rs:50:30
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub unsafe extern "C" fn matrices(op_ptr: *const c_char, cmd_1_ptr: *const c_char, mat_1_ptr: *const c_char, cmd_2_ptr: *const c_char, mat_2_ptr: *const c_char, scalar_1: f64, scalar_2: f64, b_empty: *const c_char) -> *mut c_cha...
[INFO] [stdout]    | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- because it's nested under this `unsafe` fn
[INFO] [stdout] 49 |     let op_c_str: &CStr = unsafe { CStr::from_ptr(op_ptr) };
[INFO] [stdout] 50 |     let cmd_1_c_str: &CStr = unsafe { CStr::from_ptr(cmd_1_ptr) };
[INFO] [stdout]    |                              ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/main.rs:51:30
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub unsafe extern "C" fn matrices(op_ptr: *const c_char, cmd_1_ptr: *const c_char, mat_1_ptr: *const c_char, cmd_2_ptr: *const c_char, mat_2_ptr: *const c_char, scalar_1: f64, scalar_2: f64, b_empty: *const c_char) -> *mut c_cha...
[INFO] [stdout]    | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- because it's nested under this `unsafe` fn
[INFO] [stdout] ...
[INFO] [stdout] 51 |     let mat_1_c_str: &CStr = unsafe { CStr::from_ptr(mat_1_ptr) };
[INFO] [stdout]    |                              ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/main.rs:52:30
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub unsafe extern "C" fn matrices(op_ptr: *const c_char, cmd_1_ptr: *const c_char, mat_1_ptr: *const c_char, cmd_2_ptr: *const c_char, mat_2_ptr: *const c_char, scalar_1: f64, scalar_2: f64, b_empty: *const c_char) -> *mut c_cha...
[INFO] [stdout]    | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- because it's nested under this `unsafe` fn
[INFO] [stdout] ...
[INFO] [stdout] 52 |     let cmd_2_c_str: &CStr = unsafe { CStr::from_ptr(cmd_2_ptr) };
[INFO] [stdout]    |                              ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/main.rs:53:30
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub unsafe extern "C" fn matrices(op_ptr: *const c_char, cmd_1_ptr: *const c_char, mat_1_ptr: *const c_char, cmd_2_ptr: *const c_char, mat_2_ptr: *const c_char, scalar_1: f64, scalar_2: f64, b_empty: *const c_char) -> *mut c_cha...
[INFO] [stdout]    | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- because it's nested under this `unsafe` fn
[INFO] [stdout] ...
[INFO] [stdout] 53 |     let mat_2_c_str: &CStr = unsafe { CStr::from_ptr(mat_2_ptr) };
[INFO] [stdout]    |                              ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/main.rs:55:32
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub unsafe extern "C" fn matrices(op_ptr: *const c_char, cmd_1_ptr: *const c_char, mat_1_ptr: *const c_char, cmd_2_ptr: *const c_char, mat_2_ptr: *const c_char, scalar_1: f64, scalar_2: f64, b_empty: *const c_char) -> *mut c_cha...
[INFO] [stdout]    | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- because it's nested under this `unsafe` fn
[INFO] [stdout] ...
[INFO] [stdout] 55 |     let b_empty_c_str: &CStr = unsafe { CStr::from_ptr(b_empty) };
[INFO] [stdout]    |                                ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/main.rs:73:34
[INFO] [stdout]    |
[INFO] [stdout] 72 | pub unsafe extern "C" fn conversions(conversion_type: *const c_char, from_unit: *const c_char, to_unit: *const c_char, units: f64) -> f64 {
[INFO] [stdout]    | ----------------------------------------------------------------------------------------------------------------------------------------- because it's nested under this `unsafe` fn
[INFO] [stdout] 73 |     let conv_type_c_str: &CStr = unsafe { CStr::from_ptr(conversion_type) };
[INFO] [stdout]    |                                  ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/main.rs:74:34
[INFO] [stdout]    |
[INFO] [stdout] 72 | pub unsafe extern "C" fn conversions(conversion_type: *const c_char, from_unit: *const c_char, to_unit: *const c_char, units: f64) -> f64 {
[INFO] [stdout]    | ----------------------------------------------------------------------------------------------------------------------------------------- because it's nested under this `unsafe` fn
[INFO] [stdout] 73 |     let conv_type_c_str: &CStr = unsafe { CStr::from_ptr(conversion_type) };
[INFO] [stdout] 74 |     let from_unit_c_str: &CStr = unsafe { CStr::from_ptr(from_unit) };
[INFO] [stdout]    |                                  ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/main.rs:75:32
[INFO] [stdout]    |
[INFO] [stdout] 72 | pub unsafe extern "C" fn conversions(conversion_type: *const c_char, from_unit: *const c_char, to_unit: *const c_char, units: f64) -> f64 {
[INFO] [stdout]    | ----------------------------------------------------------------------------------------------------------------------------------------- because it's nested under this `unsafe` fn
[INFO] [stdout] ...
[INFO] [stdout] 75 |     let to_unit_c_str: &CStr = unsafe { CStr::from_ptr(to_unit) };
[INFO] [stdout]    |                                ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/main.rs:88:30
[INFO] [stdout]    |
[INFO] [stdout] 87 | pub unsafe extern "C" fn calculate_for_graph(expression_input: *const c_char, some_x: f64) -> f64 {
[INFO] [stdout]    | ------------------------------------------------------------------------------------------------- because it's nested under this `unsafe` fn
[INFO] [stdout] 88 |     let input_c_str: &CStr = unsafe { CStr::from_ptr(expression_input) };
[INFO] [stdout]    |                              ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/main.rs:97:30
[INFO] [stdout]    |
[INFO] [stdout] 96 | pub unsafe extern "C" fn calculate(input: *const c_char) -> f64 {
[INFO] [stdout]    | --------------------------------------------------------------- because it's nested under this `unsafe` fn
[INFO] [stdout] 97 |     let input_c_str: &CStr = unsafe { CStr::from_ptr(input)};
[INFO] [stdout]    |                              ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/main.rs:104:30
[INFO] [stdout]     |
[INFO] [stdout] 103 | pub unsafe extern "C" fn calculate_string(input: *const c_char) -> *mut c_char {
[INFO] [stdout]     | ------------------------------------------------------------------------------ because it's nested under this `unsafe` fn
[INFO] [stdout] 104 |     let input_c_str: &CStr = unsafe { CStr::from_ptr(input)};
[INFO] [stdout]     |                              ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `WholeNumber`
[INFO] [stdout]  --> src/s_y.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     WholeNumber(i64),
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `to_string_ast`
[INFO] [stdout]    --> src/s_y.rs:622:12
[INFO] [stdout]     |
[INFO] [stdout] 622 |     pub fn to_string_ast(&self) -> String {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `lower_upper_decomposition`
[INFO] [stdout]    --> src/matrix.rs:179:8
[INFO] [stdout]     |
[INFO] [stdout] 179 | pub fn lower_upper_decomposition(matrix: &Vec<Vec<f64>>) -> (Vec<Vec<f64>>, Vec<Vec<f64>>, Vec<Vec<f64>>, Vec<Vec<f64>>,) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `pivotize_matrix`
[INFO] [stdout]    --> src/matrix.rs:211:8
[INFO] [stdout]     |
[INFO] [stdout] 211 | pub fn pivotize_matrix(matrix: &Vec<Vec<f64>>) -> Vec<Vec<f64>> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `identity_matrix`
[INFO] [stdout]    --> src/matrix.rs:241:8
[INFO] [stdout]     |
[INFO] [stdout] 241 | pub fn identity_matrix(n: usize) -> Vec<Vec<f64>> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `is_square`
[INFO] [stdout]    --> src/matrix.rs:498:8
[INFO] [stdout]     |
[INFO] [stdout] 498 | pub fn is_square(matrix: &Vec<Vec<f64>>) -> bool {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `is_rref_compat`
[INFO] [stdout]    --> src/matrix.rs:502:8
[INFO] [stdout]     |
[INFO] [stdout] 502 | pub fn is_rref_compat(matrix: &Vec<Vec<f64>>) -> bool {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `main`
[INFO] [stdout]   --> src/main.rs:11:4
[INFO] [stdout]    |
[INFO] [stdout] 11 | fn main() {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 26 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 27 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.84s
[INFO] running `Command { std: "docker" "inspect" "75a582ddcff3aeaee0c618ec5f3977710c818f8cccf3b532c4587b6617293544", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "75a582ddcff3aeaee0c618ec5f3977710c818f8cccf3b532c4587b6617293544", kill_on_drop: false }`
[INFO] [stdout] 75a582ddcff3aeaee0c618ec5f3977710c818f8cccf3b532c4587b6617293544
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3729c6de705997d4eef5ef280ee0a2ccf8c4ff99e775d10450c7d46fc740502d
[INFO] running `Command { std: "docker" "start" "-a" "3729c6de705997d4eef5ef280ee0a2ccf8c4ff99e775d10450c7d46fc740502d", kill_on_drop: false }`
[INFO] [stderr] warning: file found to be present in multiple build targets: /opt/rustwide/workdir/src/main.rs
[INFO] [stderr]    Compiling eq_solve v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `y_lower`
[INFO] [stdout]    --> src/main.rs:163:85
[INFO] [stdout]     |
[INFO] [stdout] 163 | pub fn func_of_x (expression: String, x_lower: f64, x_upper: f64, x_precision: f64, y_lower: f64, y_upper: f64) -> Vec<f64> {
[INFO] [stdout]     |                                                                                     ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_y_lower`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y_upper`
[INFO] [stdout]    --> src/main.rs:163:99
[INFO] [stdout]     |
[INFO] [stdout] 163 | pub fn func_of_x (expression: String, x_lower: f64, x_upper: f64, x_precision: f64, y_lower: f64, y_upper: f64) -> Vec<f64> {
[INFO] [stdout]     |                                                                                                   ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_y_upper`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `result` is never read
[INFO] [stdout]  --> src/matrix.rs:6:13
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let mut result: String = "".to_string();
[INFO] [stdout]   |             ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rr_mat_b`
[INFO] [stdout]   --> src/matrix.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 36 |     let rr_mat_b = &mut r_mat_b;
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_rr_mat_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y_lower`
[INFO] [stdout]    --> src/main.rs:163:85
[INFO] [stdout]     |
[INFO] [stdout] 163 | pub fn func_of_x (expression: String, x_lower: f64, x_upper: f64, x_precision: f64, y_lower: f64, y_upper: f64) -> Vec<f64> {
[INFO] [stdout]     |                                                                                     ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_y_lower`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y_upper`
[INFO] [stdout]    --> src/main.rs:163:99
[INFO] [stdout]     |
[INFO] [stdout] 163 | pub fn func_of_x (expression: String, x_lower: f64, x_upper: f64, x_precision: f64, y_lower: f64, y_upper: f64) -> Vec<f64> {
[INFO] [stdout]     |                                                                                                   ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_y_upper`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `result` is never read
[INFO] [stdout]  --> src/matrix.rs:6:13
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let mut result: String = "".to_string();
[INFO] [stdout]   |             ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rr_mat_b`
[INFO] [stdout]   --> src/matrix.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 36 |     let rr_mat_b = &mut r_mat_b;
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_rr_mat_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/matrix.rs:9:13
[INFO] [stdout]   |
[INFO] [stdout] 9 |         let mut is_float_a: bool;
[INFO] [stdout]   |             ----^^^^^^^^^^
[INFO] [stdout]   |             |
[INFO] [stdout]   |             help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/matrix.rs:38:13
[INFO] [stdout]    |
[INFO] [stdout] 38 |         let mut is_float_a: bool;
[INFO] [stdout]    |             ----^^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/matrix.rs:39:13
[INFO] [stdout]    |
[INFO] [stdout] 39 |         let mut is_float_b: bool;
[INFO] [stdout]    |             ----^^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/matrix.rs:9:13
[INFO] [stdout]   |
[INFO] [stdout] 9 |         let mut is_float_a: bool;
[INFO] [stdout]   |             ----^^^^^^^^^^
[INFO] [stdout]   |             |
[INFO] [stdout]   |             help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/matrix.rs:38:13
[INFO] [stdout]    |
[INFO] [stdout] 38 |         let mut is_float_a: bool;
[INFO] [stdout]    |             ----^^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/matrix.rs:39:13
[INFO] [stdout]    |
[INFO] [stdout] 39 |         let mut is_float_b: bool;
[INFO] [stdout]    |             ----^^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/main.rs:49:27
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub unsafe extern "C" fn matrices(op_ptr: *const c_char, cmd_1_ptr: *const c_char, mat_1_ptr: *const c_char, cmd_2_ptr: *const c_char, mat_2_ptr: *const c_char, scalar_1: f64, scalar_2: f64, b_empty: *const c_char) -> *mut c_cha...
[INFO] [stdout]    | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- because it's nested under this `unsafe` fn
[INFO] [stdout] 49 |     let op_c_str: &CStr = unsafe { CStr::from_ptr(op_ptr) };
[INFO] [stdout]    |                           ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_unsafe)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/main.rs:50:30
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub unsafe extern "C" fn matrices(op_ptr: *const c_char, cmd_1_ptr: *const c_char, mat_1_ptr: *const c_char, cmd_2_ptr: *const c_char, mat_2_ptr: *const c_char, scalar_1: f64, scalar_2: f64, b_empty: *const c_char) -> *mut c_cha...
[INFO] [stdout]    | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- because it's nested under this `unsafe` fn
[INFO] [stdout] 49 |     let op_c_str: &CStr = unsafe { CStr::from_ptr(op_ptr) };
[INFO] [stdout] 50 |     let cmd_1_c_str: &CStr = unsafe { CStr::from_ptr(cmd_1_ptr) };
[INFO] [stdout]    |                              ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/main.rs:51:30
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub unsafe extern "C" fn matrices(op_ptr: *const c_char, cmd_1_ptr: *const c_char, mat_1_ptr: *const c_char, cmd_2_ptr: *const c_char, mat_2_ptr: *const c_char, scalar_1: f64, scalar_2: f64, b_empty: *const c_char) -> *mut c_cha...
[INFO] [stdout]    | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- because it's nested under this `unsafe` fn
[INFO] [stdout] ...
[INFO] [stdout] 51 |     let mat_1_c_str: &CStr = unsafe { CStr::from_ptr(mat_1_ptr) };
[INFO] [stdout]    |                              ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/main.rs:52:30
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub unsafe extern "C" fn matrices(op_ptr: *const c_char, cmd_1_ptr: *const c_char, mat_1_ptr: *const c_char, cmd_2_ptr: *const c_char, mat_2_ptr: *const c_char, scalar_1: f64, scalar_2: f64, b_empty: *const c_char) -> *mut c_cha...
[INFO] [stdout]    | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- because it's nested under this `unsafe` fn
[INFO] [stdout] ...
[INFO] [stdout] 52 |     let cmd_2_c_str: &CStr = unsafe { CStr::from_ptr(cmd_2_ptr) };
[INFO] [stdout]    |                              ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/main.rs:53:30
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub unsafe extern "C" fn matrices(op_ptr: *const c_char, cmd_1_ptr: *const c_char, mat_1_ptr: *const c_char, cmd_2_ptr: *const c_char, mat_2_ptr: *const c_char, scalar_1: f64, scalar_2: f64, b_empty: *const c_char) -> *mut c_cha...
[INFO] [stdout]    | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- because it's nested under this `unsafe` fn
[INFO] [stdout] ...
[INFO] [stdout] 53 |     let mat_2_c_str: &CStr = unsafe { CStr::from_ptr(mat_2_ptr) };
[INFO] [stdout]    |                              ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/main.rs:55:32
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub unsafe extern "C" fn matrices(op_ptr: *const c_char, cmd_1_ptr: *const c_char, mat_1_ptr: *const c_char, cmd_2_ptr: *const c_char, mat_2_ptr: *const c_char, scalar_1: f64, scalar_2: f64, b_empty: *const c_char) -> *mut c_cha...
[INFO] [stdout]    | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- because it's nested under this `unsafe` fn
[INFO] [stdout] ...
[INFO] [stdout] 55 |     let b_empty_c_str: &CStr = unsafe { CStr::from_ptr(b_empty) };
[INFO] [stdout]    |                                ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/main.rs:73:34
[INFO] [stdout]    |
[INFO] [stdout] 72 | pub unsafe extern "C" fn conversions(conversion_type: *const c_char, from_unit: *const c_char, to_unit: *const c_char, units: f64) -> f64 {
[INFO] [stdout]    | ----------------------------------------------------------------------------------------------------------------------------------------- because it's nested under this `unsafe` fn
[INFO] [stdout] 73 |     let conv_type_c_str: &CStr = unsafe { CStr::from_ptr(conversion_type) };
[INFO] [stdout]    |                                  ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/main.rs:74:34
[INFO] [stdout]    |
[INFO] [stdout] 72 | pub unsafe extern "C" fn conversions(conversion_type: *const c_char, from_unit: *const c_char, to_unit: *const c_char, units: f64) -> f64 {
[INFO] [stdout]    | ----------------------------------------------------------------------------------------------------------------------------------------- because it's nested under this `unsafe` fn
[INFO] [stdout] 73 |     let conv_type_c_str: &CStr = unsafe { CStr::from_ptr(conversion_type) };
[INFO] [stdout] 74 |     let from_unit_c_str: &CStr = unsafe { CStr::from_ptr(from_unit) };
[INFO] [stdout]    |                                  ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/main.rs:75:32
[INFO] [stdout]    |
[INFO] [stdout] 72 | pub unsafe extern "C" fn conversions(conversion_type: *const c_char, from_unit: *const c_char, to_unit: *const c_char, units: f64) -> f64 {
[INFO] [stdout]    | ----------------------------------------------------------------------------------------------------------------------------------------- because it's nested under this `unsafe` fn
[INFO] [stdout] ...
[INFO] [stdout] 75 |     let to_unit_c_str: &CStr = unsafe { CStr::from_ptr(to_unit) };
[INFO] [stdout]    |                                ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/main.rs:88:30
[INFO] [stdout]    |
[INFO] [stdout] 87 | pub unsafe extern "C" fn calculate_for_graph(expression_input: *const c_char, some_x: f64) -> f64 {
[INFO] [stdout]    | ------------------------------------------------------------------------------------------------- because it's nested under this `unsafe` fn
[INFO] [stdout] 88 |     let input_c_str: &CStr = unsafe { CStr::from_ptr(expression_input) };
[INFO] [stdout]    |                              ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/main.rs:97:30
[INFO] [stdout]    |
[INFO] [stdout] 96 | pub unsafe extern "C" fn calculate(input: *const c_char) -> f64 {
[INFO] [stdout]    | --------------------------------------------------------------- because it's nested under this `unsafe` fn
[INFO] [stdout] 97 |     let input_c_str: &CStr = unsafe { CStr::from_ptr(input)};
[INFO] [stdout]    |                              ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/main.rs:104:30
[INFO] [stdout]     |
[INFO] [stdout] 103 | pub unsafe extern "C" fn calculate_string(input: *const c_char) -> *mut c_char {
[INFO] [stdout]     | ------------------------------------------------------------------------------ because it's nested under this `unsafe` fn
[INFO] [stdout] 104 |     let input_c_str: &CStr = unsafe { CStr::from_ptr(input)};
[INFO] [stdout]     |                              ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `WholeNumber`
[INFO] [stdout]  --> src/s_y.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     WholeNumber(i64),
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/main.rs:49:27
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub unsafe extern "C" fn matrices(op_ptr: *const c_char, cmd_1_ptr: *const c_char, mat_1_ptr: *const c_char, cmd_2_ptr: *const c_char, mat_2_ptr: *const c_char, scalar_1: f64, scalar_2: f64, b_empty: *const c_char) -> *mut c_cha...
[INFO] [stdout]    | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- because it's nested under this `unsafe` fn
[INFO] [stdout] 49 |     let op_c_str: &CStr = unsafe { CStr::from_ptr(op_ptr) };
[INFO] [stdout]    |                           ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_unsafe)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/main.rs:50:30
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub unsafe extern "C" fn matrices(op_ptr: *const c_char, cmd_1_ptr: *const c_char, mat_1_ptr: *const c_char, cmd_2_ptr: *const c_char, mat_2_ptr: *const c_char, scalar_1: f64, scalar_2: f64, b_empty: *const c_char) -> *mut c_cha...
[INFO] [stdout]    | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- because it's nested under this `unsafe` fn
[INFO] [stdout] 49 |     let op_c_str: &CStr = unsafe { CStr::from_ptr(op_ptr) };
[INFO] [stdout] 50 |     let cmd_1_c_str: &CStr = unsafe { CStr::from_ptr(cmd_1_ptr) };
[INFO] [stdout]    |                              ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/main.rs:51:30
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub unsafe extern "C" fn matrices(op_ptr: *const c_char, cmd_1_ptr: *const c_char, mat_1_ptr: *const c_char, cmd_2_ptr: *const c_char, mat_2_ptr: *const c_char, scalar_1: f64, scalar_2: f64, b_empty: *const c_char) -> *mut c_cha...
[INFO] [stdout]    | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- because it's nested under this `unsafe` fn
[INFO] [stdout] ...
[INFO] [stdout] 51 |     let mat_1_c_str: &CStr = unsafe { CStr::from_ptr(mat_1_ptr) };
[INFO] [stdout]    |                              ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/main.rs:52:30
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub unsafe extern "C" fn matrices(op_ptr: *const c_char, cmd_1_ptr: *const c_char, mat_1_ptr: *const c_char, cmd_2_ptr: *const c_char, mat_2_ptr: *const c_char, scalar_1: f64, scalar_2: f64, b_empty: *const c_char) -> *mut c_cha...
[INFO] [stdout]    | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- because it's nested under this `unsafe` fn
[INFO] [stdout] ...
[INFO] [stdout] 52 |     let cmd_2_c_str: &CStr = unsafe { CStr::from_ptr(cmd_2_ptr) };
[INFO] [stdout]    |                              ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/main.rs:53:30
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub unsafe extern "C" fn matrices(op_ptr: *const c_char, cmd_1_ptr: *const c_char, mat_1_ptr: *const c_char, cmd_2_ptr: *const c_char, mat_2_ptr: *const c_char, scalar_1: f64, scalar_2: f64, b_empty: *const c_char) -> *mut c_cha...
[INFO] [stdout]    | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- because it's nested under this `unsafe` fn
[INFO] [stdout] ...
[INFO] [stdout] 53 |     let mat_2_c_str: &CStr = unsafe { CStr::from_ptr(mat_2_ptr) };
[INFO] [stdout]    |                              ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/main.rs:55:32
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub unsafe extern "C" fn matrices(op_ptr: *const c_char, cmd_1_ptr: *const c_char, mat_1_ptr: *const c_char, cmd_2_ptr: *const c_char, mat_2_ptr: *const c_char, scalar_1: f64, scalar_2: f64, b_empty: *const c_char) -> *mut c_cha...
[INFO] [stdout]    | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- because it's nested under this `unsafe` fn
[INFO] [stdout] ...
[INFO] [stdout] 55 |     let b_empty_c_str: &CStr = unsafe { CStr::from_ptr(b_empty) };
[INFO] [stdout]    |                                ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/main.rs:73:34
[INFO] [stdout]    |
[INFO] [stdout] 72 | pub unsafe extern "C" fn conversions(conversion_type: *const c_char, from_unit: *const c_char, to_unit: *const c_char, units: f64) -> f64 {
[INFO] [stdout]    | ----------------------------------------------------------------------------------------------------------------------------------------- because it's nested under this `unsafe` fn
[INFO] [stdout] 73 |     let conv_type_c_str: &CStr = unsafe { CStr::from_ptr(conversion_type) };
[INFO] [stdout]    |                                  ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/main.rs:74:34
[INFO] [stdout]    |
[INFO] [stdout] 72 | pub unsafe extern "C" fn conversions(conversion_type: *const c_char, from_unit: *const c_char, to_unit: *const c_char, units: f64) -> f64 {
[INFO] [stdout]    | ----------------------------------------------------------------------------------------------------------------------------------------- because it's nested under this `unsafe` fn
[INFO] [stdout] 73 |     let conv_type_c_str: &CStr = unsafe { CStr::from_ptr(conversion_type) };
[INFO] [stdout] 74 |     let from_unit_c_str: &CStr = unsafe { CStr::from_ptr(from_unit) };
[INFO] [stdout]    |                                  ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/main.rs:75:32
[INFO] [stdout]    |
[INFO] [stdout] 72 | pub unsafe extern "C" fn conversions(conversion_type: *const c_char, from_unit: *const c_char, to_unit: *const c_char, units: f64) -> f64 {
[INFO] [stdout]    | ----------------------------------------------------------------------------------------------------------------------------------------- because it's nested under this `unsafe` fn
[INFO] [stdout] ...
[INFO] [stdout] 75 |     let to_unit_c_str: &CStr = unsafe { CStr::from_ptr(to_unit) };
[INFO] [stdout]    |                                ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/main.rs:88:30
[INFO] [stdout]    |
[INFO] [stdout] 87 | pub unsafe extern "C" fn calculate_for_graph(expression_input: *const c_char, some_x: f64) -> f64 {
[INFO] [stdout]    | ------------------------------------------------------------------------------------------------- because it's nested under this `unsafe` fn
[INFO] [stdout] 88 |     let input_c_str: &CStr = unsafe { CStr::from_ptr(expression_input) };
[INFO] [stdout]    |                              ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/main.rs:97:30
[INFO] [stdout]    |
[INFO] [stdout] 96 | pub unsafe extern "C" fn calculate(input: *const c_char) -> f64 {
[INFO] [stdout]    | --------------------------------------------------------------- because it's nested under this `unsafe` fn
[INFO] [stdout] 97 |     let input_c_str: &CStr = unsafe { CStr::from_ptr(input)};
[INFO] [stdout]    |                              ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/main.rs:104:30
[INFO] [stdout]     |
[INFO] [stdout] 103 | pub unsafe extern "C" fn calculate_string(input: *const c_char) -> *mut c_char {
[INFO] [stdout]     | ------------------------------------------------------------------------------ because it's nested under this `unsafe` fn
[INFO] [stdout] 104 |     let input_c_str: &CStr = unsafe { CStr::from_ptr(input)};
[INFO] [stdout]     |                              ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `WholeNumber`
[INFO] [stdout]  --> src/s_y.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     WholeNumber(i64),
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 20 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 20 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.66s
[INFO] running `Command { std: "docker" "inspect" "3729c6de705997d4eef5ef280ee0a2ccf8c4ff99e775d10450c7d46fc740502d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3729c6de705997d4eef5ef280ee0a2ccf8c4ff99e775d10450c7d46fc740502d", kill_on_drop: false }`
[INFO] [stdout] 3729c6de705997d4eef5ef280ee0a2ccf8c4ff99e775d10450c7d46fc740502d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 11b2d97f0557fef76e4f3cb8e81885e684dd68439038f702016ab303bff92dee
[INFO] running `Command { std: "docker" "start" "-a" "11b2d97f0557fef76e4f3cb8e81885e684dd68439038f702016ab303bff92dee", kill_on_drop: false }`
[INFO] [stderr] warning: file found to be present in multiple build targets: /opt/rustwide/workdir/src/main.rs
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: unused variable: `y_lower`
[INFO] [stderr]    --> src/main.rs:163:85
[INFO] [stderr]     |
[INFO] [stderr] 163 | pub fn func_of_x (expression: String, x_lower: f64, x_upper: f64, x_precision: f64, y_lower: f64, y_upper: f64) -> Vec<f64> {
[INFO] [stderr]     |                                                                                     ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_y_lower`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `y_upper`
[INFO] [stderr]    --> src/main.rs:163:99
[INFO] [stderr]     |
[INFO] [stderr] 163 | pub fn func_of_x (expression: String, x_lower: f64, x_upper: f64, x_precision: f64, y_lower: f64, y_upper: f64) -> Vec<f64> {
[INFO] [stderr]     |                                                                                                   ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_y_upper`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `result` is never read
[INFO] [stderr]  --> src/matrix.rs:6:13
[INFO] [stderr]   |
[INFO] [stderr] 6 |     let mut result: String = "".to_string();
[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: unused variable: `rr_mat_b`
[INFO] [stderr]   --> src/matrix.rs:36:9
[INFO] [stderr]    |
[INFO] [stderr] 36 |     let rr_mat_b = &mut r_mat_b;
[INFO] [stderr]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_rr_mat_b`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/matrix.rs:9:13
[INFO] [stderr]   |
[INFO] [stderr] 9 |         let mut is_float_a: bool;
[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: variable does not need to be mutable
[INFO] [stderr]   --> src/matrix.rs:38:13
[INFO] [stderr]    |
[INFO] [stderr] 38 |         let mut is_float_a: bool;
[INFO] [stderr]    |             ----^^^^^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/matrix.rs:39:13
[INFO] [stderr]    |
[INFO] [stderr] 39 |         let mut is_float_b: bool;
[INFO] [stderr]    |             ----^^^^^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary `unsafe` block
[INFO] [stderr]   --> src/main.rs:49:27
[INFO] [stderr]    |
[INFO] [stderr] 48 | pub unsafe extern "C" fn matrices(op_ptr: *const c_char, cmd_1_ptr: *const c_char, mat_1_ptr: *const c_char, cmd_2_ptr: *const c_char, mat_2_ptr: *const c_char, scalar_1: f64, scalar_2: f64, b_empty: *const c_char) -> *mut c_cha...
[INFO] [stderr]    | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- because it's nested under this `unsafe` fn
[INFO] [stderr] 49 |     let op_c_str: &CStr = unsafe { CStr::from_ptr(op_ptr) };
[INFO] [stderr]    |                           ^^^^^^ unnecessary `unsafe` block
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_unsafe)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary `unsafe` block
[INFO] [stderr]   --> src/main.rs:50:30
[INFO] [stderr]    |
[INFO] [stderr] 48 | pub unsafe extern "C" fn matrices(op_ptr: *const c_char, cmd_1_ptr: *const c_char, mat_1_ptr: *const c_char, cmd_2_ptr: *const c_char, mat_2_ptr: *const c_char, scalar_1: f64, scalar_2: f64, b_empty: *const c_char) -> *mut c_cha...
[INFO] [stderr]    | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- because it's nested under this `unsafe` fn
[INFO] [stderr] 49 |     let op_c_str: &CStr = unsafe { CStr::from_ptr(op_ptr) };
[INFO] [stderr] 50 |     let cmd_1_c_str: &CStr = unsafe { CStr::from_ptr(cmd_1_ptr) };
[INFO] [stderr]    |                              ^^^^^^ unnecessary `unsafe` block
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary `unsafe` block
[INFO] [stderr]   --> src/main.rs:51:30
[INFO] [stderr]    |
[INFO] [stderr] 48 | pub unsafe extern "C" fn matrices(op_ptr: *const c_char, cmd_1_ptr: *const c_char, mat_1_ptr: *const c_char, cmd_2_ptr: *const c_char, mat_2_ptr: *const c_char, scalar_1: f64, scalar_2: f64, b_empty: *const c_char) -> *mut c_cha...
[INFO] [stderr]    | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- because it's nested under this `unsafe` fn
[INFO] [stderr] ...
[INFO] [stderr] 51 |     let mat_1_c_str: &CStr = unsafe { CStr::from_ptr(mat_1_ptr) };
[INFO] [stderr]    |                              ^^^^^^ unnecessary `unsafe` block
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary `unsafe` block
[INFO] [stderr]   --> src/main.rs:52:30
[INFO] [stderr]    |
[INFO] [stderr] 48 | pub unsafe extern "C" fn matrices(op_ptr: *const c_char, cmd_1_ptr: *const c_char, mat_1_ptr: *const c_char, cmd_2_ptr: *const c_char, mat_2_ptr: *const c_char, scalar_1: f64, scalar_2: f64, b_empty: *const c_char) -> *mut c_cha...
[INFO] [stderr]    | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- because it's nested under this `unsafe` fn
[INFO] [stderr] ...
[INFO] [stderr] 52 |     let cmd_2_c_str: &CStr = unsafe { CStr::from_ptr(cmd_2_ptr) };
[INFO] [stderr]    |                              ^^^^^^ unnecessary `unsafe` block
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary `unsafe` block
[INFO] [stderr]   --> src/main.rs:53:30
[INFO] [stderr]    |
[INFO] [stderr] 48 | pub unsafe extern "C" fn matrices(op_ptr: *const c_char, cmd_1_ptr: *const c_char, mat_1_ptr: *const c_char, cmd_2_ptr: *const c_char, mat_2_ptr: *const c_char, scalar_1: f64, scalar_2: f64, b_empty: *const c_char) -> *mut c_cha...
[INFO] [stderr]    | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- because it's nested under this `unsafe` fn
[INFO] [stderr] ...
[INFO] [stderr] 53 |     let mat_2_c_str: &CStr = unsafe { CStr::from_ptr(mat_2_ptr) };
[INFO] [stderr]    |                              ^^^^^^ unnecessary `unsafe` block
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary `unsafe` block
[INFO] [stderr]   --> src/main.rs:55:32
[INFO] [stderr]    |
[INFO] [stderr] 48 | pub unsafe extern "C" fn matrices(op_ptr: *const c_char, cmd_1_ptr: *const c_char, mat_1_ptr: *const c_char, cmd_2_ptr: *const c_char, mat_2_ptr: *const c_char, scalar_1: f64, scalar_2: f64, b_empty: *const c_char) -> *mut c_cha...
[INFO] [stderr]    | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- because it's nested under this `unsafe` fn
[INFO] [stderr] ...
[INFO] [stderr] 55 |     let b_empty_c_str: &CStr = unsafe { CStr::from_ptr(b_empty) };
[INFO] [stderr]    |                                ^^^^^^ unnecessary `unsafe` block
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary `unsafe` block
[INFO] [stderr]   --> src/main.rs:73:34
[INFO] [stderr]    |
[INFO] [stderr] 72 | pub unsafe extern "C" fn conversions(conversion_type: *const c_char, from_unit: *const c_char, to_unit: *const c_char, units: f64) -> f64 {
[INFO] [stderr]    | ----------------------------------------------------------------------------------------------------------------------------------------- because it's nested under this `unsafe` fn
[INFO] [stderr] 73 |     let conv_type_c_str: &CStr = unsafe { CStr::from_ptr(conversion_type) };
[INFO] [stderr]    |                                  ^^^^^^ unnecessary `unsafe` block
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary `unsafe` block
[INFO] [stderr]   --> src/main.rs:74:34
[INFO] [stderr]    |
[INFO] [stderr] 72 | pub unsafe extern "C" fn conversions(conversion_type: *const c_char, from_unit: *const c_char, to_unit: *const c_char, units: f64) -> f64 {
[INFO] [stderr]    | ----------------------------------------------------------------------------------------------------------------------------------------- because it's nested under this `unsafe` fn
[INFO] [stderr] 73 |     let conv_type_c_str: &CStr = unsafe { CStr::from_ptr(conversion_type) };
[INFO] [stderr] 74 |     let from_unit_c_str: &CStr = unsafe { CStr::from_ptr(from_unit) };
[INFO] [stderr]    |                                  ^^^^^^ unnecessary `unsafe` block
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary `unsafe` block
[INFO] [stderr]   --> src/main.rs:75:32
[INFO] [stderr]    |
[INFO] [stderr] 72 | pub unsafe extern "C" fn conversions(conversion_type: *const c_char, from_unit: *const c_char, to_unit: *const c_char, units: f64) -> f64 {
[INFO] [stderr]    | ----------------------------------------------------------------------------------------------------------------------------------------- because it's nested under this `unsafe` fn
[INFO] [stderr] ...
[INFO] [stderr] 75 |     let to_unit_c_str: &CStr = unsafe { CStr::from_ptr(to_unit) };
[INFO] [stderr]    |                                ^^^^^^ unnecessary `unsafe` block
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary `unsafe` block
[INFO] [stderr]   --> src/main.rs:88:30
[INFO] [stderr]    |
[INFO] [stderr] 87 | pub unsafe extern "C" fn calculate_for_graph(expression_input: *const c_char, some_x: f64) -> f64 {
[INFO] [stderr]    | ------------------------------------------------------------------------------------------------- because it's nested under this `unsafe` fn
[INFO] [stderr] 88 |     let input_c_str: &CStr = unsafe { CStr::from_ptr(expression_input) };
[INFO] [stderr]    |                              ^^^^^^ unnecessary `unsafe` block
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary `unsafe` block
[INFO] [stderr]   --> src/main.rs:97:30
[INFO] [stderr]    |
[INFO] [stderr] 96 | pub unsafe extern "C" fn calculate(input: *const c_char) -> f64 {
[INFO] [stderr]    | --------------------------------------------------------------- because it's nested under this `unsafe` fn
[INFO] [stderr] 97 |     let input_c_str: &CStr = unsafe { CStr::from_ptr(input)};
[INFO] [stderr]    |                              ^^^^^^ unnecessary `unsafe` block
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary `unsafe` block
[INFO] [stderr]    --> src/main.rs:104:30
[INFO] [stderr]     |
[INFO] [stderr] 103 | pub unsafe extern "C" fn calculate_string(input: *const c_char) -> *mut c_char {
[INFO] [stderr]     | ------------------------------------------------------------------------------ because it's nested under this `unsafe` fn
[INFO] [stderr] 104 |     let input_c_str: &CStr = unsafe { CStr::from_ptr(input)};
[INFO] [stderr]     |                              ^^^^^^ unnecessary `unsafe` block
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `WholeNumber`
[INFO] [stderr]  --> src/s_y.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     WholeNumber(i64),
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 20 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `y_lower`
[INFO] [stderr]    --> src/main.rs:163:85
[INFO] [stderr]     |
[INFO] [stderr] 163 | pub fn func_of_x (expression: String, x_lower: f64, x_upper: f64, x_precision: f64, y_lower: f64, y_upper: f64) -> Vec<f64> {
[INFO] [stderr]     |                                                                                     ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_y_lower`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `y_upper`
[INFO] [stderr]    --> src/main.rs:163:99
[INFO] [stderr]     |
[INFO] [stderr] 163 | pub fn func_of_x (expression: String, x_lower: f64, x_upper: f64, x_precision: f64, y_lower: f64, y_upper: f64) -> Vec<f64> {
[INFO] [stderr]     |                                                                                                   ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_y_upper`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `result` is never read
[INFO] [stderr]  --> src/matrix.rs:6:13
[INFO] [stderr]   |
[INFO] [stderr] 6 |     let mut result: String = "".to_string();
[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: unused variable: `rr_mat_b`
[INFO] [stderr]   --> src/matrix.rs:36:9
[INFO] [stderr]    |
[INFO] [stderr] 36 |     let rr_mat_b = &mut r_mat_b;
[INFO] [stderr]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_rr_mat_b`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/matrix.rs:9:13
[INFO] [stderr]   |
[INFO] [stderr] 9 |         let mut is_float_a: bool;
[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: variable does not need to be mutable
[INFO] [stderr]   --> src/matrix.rs:38:13
[INFO] [stderr]    |
[INFO] [stderr] 38 |         let mut is_float_a: bool;
[INFO] [stderr]    |             ----^^^^^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/matrix.rs:39:13
[INFO] [stderr]    |
[INFO] [stderr] 39 |         let mut is_float_b: bool;
[INFO] [stderr]    |             ----^^^^^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary `unsafe` block
[INFO] [stderr]   --> src/main.rs:49:27
[INFO] [stderr]    |
[INFO] [stderr] 48 | pub unsafe extern "C" fn matrices(op_ptr: *const c_char, cmd_1_ptr: *const c_char, mat_1_ptr: *const c_char, cmd_2_ptr: *const c_char, mat_2_ptr: *const c_char, scalar_1: f64, scalar_2: f64, b_empty: *const c_char) -> *mut c_cha...
[INFO] [stderr]    | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- because it's nested under this `unsafe` fn
[INFO] [stderr] 49 |     let op_c_str: &CStr = unsafe { CStr::from_ptr(op_ptr) };
[INFO] [stderr]    |                           ^^^^^^ unnecessary `unsafe` block
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_unsafe)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary `unsafe` block
[INFO] [stderr]   --> src/main.rs:50:30
[INFO] [stderr]    |
[INFO] [stderr] 48 | pub unsafe extern "C" fn matrices(op_ptr: *const c_char, cmd_1_ptr: *const c_char, mat_1_ptr: *const c_char, cmd_2_ptr: *const c_char, mat_2_ptr: *const c_char, scalar_1: f64, scalar_2: f64, b_empty: *const c_char) -> *mut c_cha...
[INFO] [stderr]    | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- because it's nested under this `unsafe` fn
[INFO] [stderr] 49 |     let op_c_str: &CStr = unsafe { CStr::from_ptr(op_ptr) };
[INFO] [stderr] 50 |     let cmd_1_c_str: &CStr = unsafe { CStr::from_ptr(cmd_1_ptr) };
[INFO] [stderr]    |                              ^^^^^^ unnecessary `unsafe` block
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary `unsafe` block
[INFO] [stderr]   --> src/main.rs:51:30
[INFO] [stderr]    |
[INFO] [stderr] 48 | pub unsafe extern "C" fn matrices(op_ptr: *const c_char, cmd_1_ptr: *const c_char, mat_1_ptr: *const c_char, cmd_2_ptr: *const c_char, mat_2_ptr: *const c_char, scalar_1: f64, scalar_2: f64, b_empty: *const c_char) -> *mut c_cha...
[INFO] [stderr]    | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- because it's nested under this `unsafe` fn
[INFO] [stderr] ...
[INFO] [stderr] 51 |     let mat_1_c_str: &CStr = unsafe { CStr::from_ptr(mat_1_ptr) };
[INFO] [stderr]    |                              ^^^^^^ unnecessary `unsafe` block
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary `unsafe` block
[INFO] [stderr]   --> src/main.rs:52:30
[INFO] [stderr]    |
[INFO] [stderr] 48 | pub unsafe extern "C" fn matrices(op_ptr: *const c_char, cmd_1_ptr: *const c_char, mat_1_ptr: *const c_char, cmd_2_ptr: *const c_char, mat_2_ptr: *const c_char, scalar_1: f64, scalar_2: f64, b_empty: *const c_char) -> *mut c_cha...
[INFO] [stderr]    | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- because it's nested under this `unsafe` fn
[INFO] [stderr] ...
[INFO] [stderr] 52 |     let cmd_2_c_str: &CStr = unsafe { CStr::from_ptr(cmd_2_ptr) };
[INFO] [stderr]    |                              ^^^^^^ unnecessary `unsafe` block
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary `unsafe` block
[INFO] [stderr]   --> src/main.rs:53:30
[INFO] [stderr]    |
[INFO] [stderr] 48 | pub unsafe extern "C" fn matrices(op_ptr: *const c_char, cmd_1_ptr: *const c_char, mat_1_ptr: *const c_char, cmd_2_ptr: *const c_char, mat_2_ptr: *const c_char, scalar_1: f64, scalar_2: f64, b_empty: *const c_char) -> *mut c_cha...
[INFO] [stderr]    | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- because it's nested under this `unsafe` fn
[INFO] [stderr] ...
[INFO] [stderr] 53 |     let mat_2_c_str: &CStr = unsafe { CStr::from_ptr(mat_2_ptr) };
[INFO] [stderr]    |                              ^^^^^^ unnecessary `unsafe` block
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary `unsafe` block
[INFO] [stderr]   --> src/main.rs:55:32
[INFO] [stderr]    |
[INFO] [stderr] 48 | pub unsafe extern "C" fn matrices(op_ptr: *const c_char, cmd_1_ptr: *const c_char, mat_1_ptr: *const c_char, cmd_2_ptr: *const c_char, mat_2_ptr: *const c_char, scalar_1: f64, scalar_2: f64, b_empty: *const c_char) -> *mut c_cha...
[INFO] [stderr]    | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- because it's nested under this `unsafe` fn
[INFO] [stderr] ...
[INFO] [stderr] 55 |     let b_empty_c_str: &CStr = unsafe { CStr::from_ptr(b_empty) };
[INFO] [stderr]    |                                ^^^^^^ unnecessary `unsafe` block
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary `unsafe` block
[INFO] [stderr]   --> src/main.rs:73:34
[INFO] [stderr]    |
[INFO] [stderr] 72 | pub unsafe extern "C" fn conversions(conversion_type: *const c_char, from_unit: *const c_char, to_unit: *const c_char, units: f64) -> f64 {
[INFO] [stderr]    | ----------------------------------------------------------------------------------------------------------------------------------------- because it's nested under this `unsafe` fn
[INFO] [stderr] 73 |     let conv_type_c_str: &CStr = unsafe { CStr::from_ptr(conversion_type) };
[INFO] [stderr]    |                                  ^^^^^^ unnecessary `unsafe` block
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary `unsafe` block
[INFO] [stderr]   --> src/main.rs:74:34
[INFO] [stderr]    |
[INFO] [stderr] 72 | pub unsafe extern "C" fn conversions(conversion_type: *const c_char, from_unit: *const c_char, to_unit: *const c_char, units: f64) -> f64 {
[INFO] [stderr]    | ----------------------------------------------------------------------------------------------------------------------------------------- because it's nested under this `unsafe` fn
[INFO] [stderr] 73 |     let conv_type_c_str: &CStr = unsafe { CStr::from_ptr(conversion_type) };
[INFO] [stderr] 74 |     let from_unit_c_str: &CStr = unsafe { CStr::from_ptr(from_unit) };
[INFO] [stderr]    |                                  ^^^^^^ unnecessary `unsafe` block
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary `unsafe` block
[INFO] [stderr]   --> src/main.rs:75:32
[INFO] [stderr]    |
[INFO] [stderr] 72 | pub unsafe extern "C" fn conversions(conversion_type: *const c_char, from_unit: *const c_char, to_unit: *const c_char, units: f64) -> f64 {
[INFO] [stderr]    | ----------------------------------------------------------------------------------------------------------------------------------------- because it's nested under this `unsafe` fn
[INFO] [stderr] ...
[INFO] [stderr] 75 |     let to_unit_c_str: &CStr = unsafe { CStr::from_ptr(to_unit) };
[INFO] [stderr]    |                                ^^^^^^ unnecessary `unsafe` block
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary `unsafe` block
[INFO] [stderr]   --> src/main.rs:88:30
[INFO] [stderr]    |
[INFO] [stderr] 87 | pub unsafe extern "C" fn calculate_for_graph(expression_input: *const c_char, some_x: f64) -> f64 {
[INFO] [stderr]    | ------------------------------------------------------------------------------------------------- because it's nested under this `unsafe` fn
[INFO] [stderr] 88 |     let input_c_str: &CStr = unsafe { CStr::from_ptr(expression_input) };
[INFO] [stderr]    |                              ^^^^^^ unnecessary `unsafe` block
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary `unsafe` block
[INFO] [stderr]   --> src/main.rs:97:30
[INFO] [stderr]    |
[INFO] [stderr] 96 | pub unsafe extern "C" fn calculate(input: *const c_char) -> f64 {
[INFO] [stderr]    | --------------------------------------------------------------- because it's nested under this `unsafe` fn
[INFO] [stderr] 97 |     let input_c_str: &CStr = unsafe { CStr::from_ptr(input)};
[INFO] [stderr]    |                              ^^^^^^ unnecessary `unsafe` block
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary `unsafe` block
[INFO] [stderr]    --> src/main.rs:104:30
[INFO] [stderr]     |
[INFO] [stderr] 103 | pub unsafe extern "C" fn calculate_string(input: *const c_char) -> *mut c_char {
[INFO] [stderr]     | ------------------------------------------------------------------------------ because it's nested under this `unsafe` fn
[INFO] [stderr] 104 |     let input_c_str: &CStr = unsafe { CStr::from_ptr(input)};
[INFO] [stderr]     |                              ^^^^^^ unnecessary `unsafe` block
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `WholeNumber`
[INFO] [stderr]  --> src/s_y.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     WholeNumber(i64),
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 20 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.22s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/calc-0ab56a2189e00b85)
[INFO] [stdout] 
[INFO] [stdout] running 51 tests
[INFO] [stdout] test tests::test_is_square_false ... ok
[INFO] [stdout] test tests::test_is_rref_compat_true ... ok
[INFO] [stdout] test tests::parenthesis_overrides_divide_before_add ... ok
[INFO] [stdout] test tests::test_log ... ok
[INFO] [stdout] test tests::test_lu_decomp_lower ... ok
[INFO] [stdout] test tests::test_ln ... ok
[INFO] [stdout] test tests::test_lu_decomp_permute ... ok
[INFO] [stdout] test tests::test_matrix_add ... ok
[INFO] [stdout] test tests::multiply_before_subtract ... ok
[INFO] [stdout] test tests::test_is_square_true ... ok
[INFO] [stdout] test tests::test_matrix_multiplication ... ok
[INFO] [stdout] test tests::parenthesis_overrides_multiply_before_subtract ... ok
[INFO] [stdout] test tests::test_lu_decom_prime ... ok
[INFO] [stdout] test tests::test_matrix_from_string ... ok
[INFO] [stdout] test tests::test_lu_decomp_upper ... ok
[INFO] [stdout] test tests::test_sin ... ok
[INFO] [stdout] test tests::test_perm_b ... ok
[INFO] [stdout] test tests::test_multiply ... ok
[INFO] [stdout] test tests::parenthesis_overrides_powers_before_everything ... ok
[INFO] [stdout] test tests::test_sec ... ok
[INFO] [stdout] test tests::test_divide ... ok
[INFO] [stdout] test tests::test_ident_matrix_3 ... ok
[INFO] [stdout] test tests::test_abs ... ok
[INFO] [stdout] test tests::test_add ... ok
[INFO] [stdout] test tests::powers_before_everything ... ok
[INFO] [stdout] test tests::parenthesis_overrides_divide_before_subtract ... ok
[INFO] [stdout] test tests::test_matrix_subtract ... ok
[INFO] [stdout] test tests::test_cos ... ok
[INFO] [stdout] test tests::multiply_before_add ... ok
[INFO] [stdout] test tests::divide_before_add ... ok
[INFO] [stdout] test tests::test_perm_c ... ok
[INFO] [stdout] test tests::test_pivot_matrix ... ok
[INFO] [stdout] test tests::test_det_b ... ok
[INFO] [stdout] test tests::test_permanent_a ... ok
[INFO] [stdout] test tests::test_zero_matrix_c ... ok
[INFO] [stdout] test tests::test_power ... ok
[INFO] [stdout] test tests::test_reduced_row_echelon ... ok
[INFO] [stdout] test tests::test_scalar_mult ... ok
[INFO] [stdout] test tests::test_string_from_matrix ... ok
[INFO] [stdout] test tests::test_tan ... ok
[INFO] [stdout] test tests::test_subtract ... ok
[INFO] [stdout] test tests::test_det_c ... ok
[INFO] [stdout] test tests::test_transpose ... ok
[INFO] [stdout] test tests::test_sqrt ... ok
[INFO] [stdout] test tests::test_zero_matrix_a ... ok
[INFO] [stdout] test tests::parenthesis_overrides_multiply_before_add ... ok
[INFO] [stdout] test tests::test_zero_matrix_b ... ok
[INFO] [stdout] test tests::test_determinant_a ... ok
[INFO] [stdout] test tests::test_ident_matrix_1 ... ok
[INFO] [stdout] test tests::divide_before_subtract ... ok
[INFO] [stdout] test tests::test_is_rref_compat_false ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 51 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/eq_solve-c11fd11e21e04e56)
[INFO] [stdout] 
[INFO] [stdout] running 51 tests
[INFO] [stdout] test tests::divide_before_add ... ok
[INFO] [stdout] test tests::multiply_before_add ... ok
[INFO] [stdout] test tests::parenthesis_overrides_divide_before_subtract ... ok
[INFO] [stdout] test tests::parenthesis_overrides_multiply_before_subtract ... ok
[INFO] [stdout] test tests::test_abs ... ok
[INFO] [stdout] test tests::parenthesis_overrides_powers_before_everything ... ok
[INFO] [stdout] test tests::parenthesis_overrides_multiply_before_add ... ok
[INFO] [stdout] test tests::test_cos ... ok
[INFO] [stdout] test tests::test_ident_matrix_1 ... ok
[INFO] [stdout] test tests::test_is_rref_compat_false ... ok
[INFO] [stdout] test tests::test_is_square_false ... ok
[INFO] [stdout] test tests::test_is_rref_compat_true ... ok
[INFO] [stdout] test tests::test_divide ... ok
[INFO] [stdout] test tests::test_add ... ok
[INFO] [stdout] test tests::test_ident_matrix_3 ... ok
[INFO] [stdout] test tests::test_ln ... ok
[INFO] [stdout] test tests::test_log ... ok
[INFO] [stdout] test tests::test_lu_decom_prime ... ok
[INFO] [stdout] test tests::divide_before_subtract ... ok
[INFO] [stdout] test tests::test_lu_decomp_lower ... ok
[INFO] [stdout] test tests::test_matrix_add ... ok
[INFO] [stdout] test tests::test_matrix_from_string ... ok
[INFO] [stdout] test tests::test_matrix_multiplication ... ok
[INFO] [stdout] test tests::test_matrix_subtract ... ok
[INFO] [stdout] test tests::test_sec ... ok
[INFO] [stdout] test tests::test_sin ... ok
[INFO] [stdout] test tests::test_multiply ... ok
[INFO] [stdout] test tests::test_sqrt ... ok
[INFO] [stdout] test tests::test_subtract ... ok
[INFO] [stdout] test tests::test_tan ... ok
[INFO] [stdout] test tests::test_transpose ... ok
[INFO] [stdout] test tests::test_zero_matrix_a ... ok
[INFO] [stdout] test tests::test_zero_matrix_b ... ok
[INFO] [stdout] test tests::test_zero_matrix_c ... ok
[INFO] [stdout] test tests::test_perm_b ... ok
[INFO] [stdout] test tests::test_string_from_matrix ... ok
[INFO] [stdout] test tests::test_is_square_true ... ok
[INFO] [stdout] test tests::multiply_before_subtract ... ok
[INFO] [stdout] test tests::powers_before_everything ... ok
[INFO] [stdout] test tests::test_power ... ok
[INFO] [stdout] test tests::test_perm_c ... ok
[INFO] [stdout] test tests::test_lu_decomp_permute ... ok
[INFO] [stdout] test tests::test_permanent_a ... ok
[INFO] [stdout] test tests::test_determinant_a ... ok
[INFO] [stdout] test tests::test_det_c ... ok
[INFO] [stdout] test tests::test_pivot_matrix ... ok
[INFO] [stdout] test tests::test_lu_decomp_upper ... ok
[INFO] [stdout] test tests::test_reduced_row_echelon ... ok
[INFO] [stdout] test tests::test_scalar_mult ... ok
[INFO] [stdout] test tests::parenthesis_overrides_divide_before_add ... ok
[INFO] [stdout] test tests::test_det_b ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 51 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "11b2d97f0557fef76e4f3cb8e81885e684dd68439038f702016ab303bff92dee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "11b2d97f0557fef76e4f3cb8e81885e684dd68439038f702016ab303bff92dee", kill_on_drop: false }`
[INFO] [stdout] 11b2d97f0557fef76e4f3cb8e81885e684dd68439038f702016ab303bff92dee