[INFO] cloning repository https://github.com/willySajbeni/linear_algebra_ws
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/willySajbeni/linear_algebra_ws" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FwillySajbeni%2Flinear_algebra_ws", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FwillySajbeni%2Flinear_algebra_ws'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b4b282632959234071b751e55a2e68b13520a1cd
[INFO] checking willySajbeni/linear_algebra_ws against try#5de9e0e6cf775e94e0de2003f35e183f3f77bfe8 for pr-143808
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FwillySajbeni%2Flinear_algebra_ws" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/willySajbeni/linear_algebra_ws
[INFO] finished tweaking git repo https://github.com/willySajbeni/linear_algebra_ws
[INFO] tweaked toml for git repo https://github.com/willySajbeni/linear_algebra_ws written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/willySajbeni/linear_algebra_ws on toolchain 5de9e0e6cf775e94e0de2003f35e183f3f77bfe8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5de9e0e6cf775e94e0de2003f35e183f3f77bfe8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/willySajbeni/linear_algebra_ws already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5de9e0e6cf775e94e0de2003f35e183f3f77bfe8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+5de9e0e6cf775e94e0de2003f35e183f3f77bfe8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e8a9e083936479d9c7473fc7a7f0deb69dc5e35d5bb6dc228c0b1be6b48bb734
[INFO] running `Command { std: "docker" "start" "-a" "e8a9e083936479d9c7473fc7a7f0deb69dc5e35d5bb6dc228c0b1be6b48bb734", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e8a9e083936479d9c7473fc7a7f0deb69dc5e35d5bb6dc228c0b1be6b48bb734", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e8a9e083936479d9c7473fc7a7f0deb69dc5e35d5bb6dc228c0b1be6b48bb734", kill_on_drop: false }`
[INFO] [stdout] e8a9e083936479d9c7473fc7a7f0deb69dc5e35d5bb6dc228c0b1be6b48bb734
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+5de9e0e6cf775e94e0de2003f35e183f3f77bfe8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 004504cc40b6ae633025e4b7d6ecc749d7db5af41898860aa65417d2ec1f50c1
[INFO] running `Command { std: "docker" "start" "-a" "004504cc40b6ae633025e4b7d6ecc749d7db5af41898860aa65417d2ec1f50c1", kill_on_drop: false }`
[INFO] [stderr]     Checking linear_algebra_ws v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::matrix_operations::*`
[INFO] [stdout]   --> src/submenu.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use crate::matrix_operations::*; // Matrix operations: addition, subtraction, multiplication, inversion, LU, eigenvalues/eigenvectors
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::advanced_methods::*`
[INFO] [stdout]   --> src/submenu.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use crate::advanced_methods::*;  // Advanced Numerical Methods: iterative, direct, conjugate gradient
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::gradient_optimizers::*`
[INFO] [stdout]   --> src/submenu.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use crate::gradient_optimizers::*; // Gradient Optimizers: GD, SGD, Adam, RMSProp
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::dimensionality_reduction::*`
[INFO] [stdout]   --> src/submenu.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use crate::dimensionality_reduction::*; // Dimensionality Reduction: PCA, SVD, LLE, t-SNE
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::input::*`
[INFO] [stdout]  --> src/matrix_operations.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use crate::input::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io`
[INFO] [stdout]  --> src/matrix_operations.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::io;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::input::*`
[INFO] [stdout]  --> src/advanced_methods.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use crate::input::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io`
[INFO] [stdout]  --> src/advanced_methods.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::io;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::input::*`
[INFO] [stdout]  --> src/gradient_optimizers.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use crate::input::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io`
[INFO] [stdout]  --> src/gradient_optimizers.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::io;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::input::*`
[INFO] [stdout]  --> src/dimensionality_reduction.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use crate::input::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io`
[INFO] [stdout]  --> src/dimensionality_reduction.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::io;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::vector::*`
[INFO] [stdout]   --> src/main.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use crate::vector::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::matrix_operations::*`
[INFO] [stdout]   --> src/main.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | use crate::matrix_operations::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::advanced_methods::*`
[INFO] [stdout]   --> src/main.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | use crate::advanced_methods::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::gradient_optimizers::*`
[INFO] [stdout]   --> src/main.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | use crate::gradient_optimizers::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::dimensionality_reduction::*`
[INFO] [stdout]   --> src/main.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 | use crate::dimensionality_reduction::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::input::*`
[INFO] [stdout]   --> src/main.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | use crate::input::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::matrix_operations::*`
[INFO] [stdout]   --> src/submenu.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use crate::matrix_operations::*; // Matrix operations: addition, subtraction, multiplication, inversion, LU, eigenvalues/eigenvectors
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::advanced_methods::*`
[INFO] [stdout]   --> src/submenu.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use crate::advanced_methods::*;  // Advanced Numerical Methods: iterative, direct, conjugate gradient
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::gradient_optimizers::*`
[INFO] [stdout]   --> src/submenu.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use crate::gradient_optimizers::*; // Gradient Optimizers: GD, SGD, Adam, RMSProp
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::dimensionality_reduction::*`
[INFO] [stdout]   --> src/submenu.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use crate::dimensionality_reduction::*; // Dimensionality Reduction: PCA, SVD, LLE, t-SNE
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::input::*`
[INFO] [stdout]  --> src/matrix_operations.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use crate::input::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io`
[INFO] [stdout]  --> src/matrix_operations.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::io;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::input::*`
[INFO] [stdout]  --> src/advanced_methods.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use crate::input::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io`
[INFO] [stdout]  --> src/advanced_methods.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::io;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::input::*`
[INFO] [stdout]  --> src/gradient_optimizers.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use crate::input::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io`
[INFO] [stdout]  --> src/gradient_optimizers.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::io;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::input::*`
[INFO] [stdout]  --> src/dimensionality_reduction.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use crate::input::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io`
[INFO] [stdout]  --> src/dimensionality_reduction.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::io;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::vector::*`
[INFO] [stdout]   --> src/main.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use crate::vector::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::matrix_operations::*`
[INFO] [stdout]   --> src/main.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | use crate::matrix_operations::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::advanced_methods::*`
[INFO] [stdout]   --> src/main.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | use crate::advanced_methods::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::gradient_optimizers::*`
[INFO] [stdout]   --> src/main.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | use crate::gradient_optimizers::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::dimensionality_reduction::*`
[INFO] [stdout]   --> src/main.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 | use crate::dimensionality_reduction::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::input::*`
[INFO] [stdout]   --> src/main.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | use crate::input::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> src/submenu.rs:92:21
[INFO] [stdout]    |
[INFO] [stdout] 92 |                 let a = read_matrix();
[INFO] [stdout]    |                     ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> src/submenu.rs:94:21
[INFO] [stdout]    |
[INFO] [stdout] 94 |                 let b = read_matrix();
[INFO] [stdout]    |                     ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> src/submenu.rs:99:21
[INFO] [stdout]    |
[INFO] [stdout] 99 |                 let a = read_matrix();
[INFO] [stdout]    |                     ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]    --> src/submenu.rs:101:21
[INFO] [stdout]     |
[INFO] [stdout] 101 |                 let b = read_matrix();
[INFO] [stdout]     |                     ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]    --> src/submenu.rs:106:21
[INFO] [stdout]     |
[INFO] [stdout] 106 |                 let a = read_matrix();
[INFO] [stdout]     |                     ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]    --> src/submenu.rs:108:21
[INFO] [stdout]     |
[INFO] [stdout] 108 |                 let b = read_matrix();
[INFO] [stdout]     |                     ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]    --> src/submenu.rs:113:21
[INFO] [stdout]     |
[INFO] [stdout] 113 |                 let a = read_matrix();
[INFO] [stdout]     |                     ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `m1`
[INFO] [stdout]    --> src/submenu.rs:118:21
[INFO] [stdout]     |
[INFO] [stdout] 118 |                 let m1 = read_matrix();
[INFO] [stdout]     |                     ^^ help: if this is intentional, prefix it with an underscore: `_m1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `m2`
[INFO] [stdout]    --> src/submenu.rs:120:21
[INFO] [stdout]     |
[INFO] [stdout] 120 |                 let m2 = read_matrix();
[INFO] [stdout]     |                     ^^ help: if this is intentional, prefix it with an underscore: `_m2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]    --> src/submenu.rs:125:21
[INFO] [stdout]     |
[INFO] [stdout] 125 |                 let a = read_matrix();
[INFO] [stdout]     |                     ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]    --> src/submenu.rs:130:21
[INFO] [stdout]     |
[INFO] [stdout] 130 |                 let a = read_matrix();
[INFO] [stdout]     |                     ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]    --> src/submenu.rs:162:21
[INFO] [stdout]     |
[INFO] [stdout] 162 |                 let a = read_matrix();
[INFO] [stdout]     |                     ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]    --> src/submenu.rs:164:21
[INFO] [stdout]     |
[INFO] [stdout] 164 |                 let b = read_vector();
[INFO] [stdout]     |                     ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]    --> src/submenu.rs:169:21
[INFO] [stdout]     |
[INFO] [stdout] 169 |                 let a = read_matrix();
[INFO] [stdout]     |                     ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]    --> src/submenu.rs:171:21
[INFO] [stdout]     |
[INFO] [stdout] 171 |                 let b = read_vector();
[INFO] [stdout]     |                     ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]    --> src/submenu.rs:176:21
[INFO] [stdout]     |
[INFO] [stdout] 176 |                 let a = read_matrix();
[INFO] [stdout]     |                     ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]    --> src/submenu.rs:178:21
[INFO] [stdout]     |
[INFO] [stdout] 178 |                 let b = read_vector();
[INFO] [stdout]     |                     ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rf`
[INFO] [stdout]    --> src/submenu.rs:209:21
[INFO] [stdout]     |
[INFO] [stdout] 209 |                 let rf = read_function();
[INFO] [stdout]     |                     ^^ help: if this is intentional, prefix it with an underscore: `_rf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x0`
[INFO] [stdout]    --> src/submenu.rs:211:21
[INFO] [stdout]     |
[INFO] [stdout] 211 |                 let x0 = read_scalar();
[INFO] [stdout]     |                     ^^ help: if this is intentional, prefix it with an underscore: `_x0`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rf`
[INFO] [stdout]    --> src/submenu.rs:216:21
[INFO] [stdout]     |
[INFO] [stdout] 216 |                 let rf = read_function();
[INFO] [stdout]     |                     ^^ help: if this is intentional, prefix it with an underscore: `_rf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x0`
[INFO] [stdout]    --> src/submenu.rs:218:21
[INFO] [stdout]     |
[INFO] [stdout] 218 |                 let x0 = read_scalar();
[INFO] [stdout]     |                     ^^ help: if this is intentional, prefix it with an underscore: `_x0`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rf`
[INFO] [stdout]    --> src/submenu.rs:223:21
[INFO] [stdout]     |
[INFO] [stdout] 223 |                 let rf = read_function();
[INFO] [stdout]     |                     ^^ help: if this is intentional, prefix it with an underscore: `_rf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x0`
[INFO] [stdout]    --> src/submenu.rs:225:21
[INFO] [stdout]     |
[INFO] [stdout] 225 |                 let x0 = read_scalar();
[INFO] [stdout]     |                     ^^ help: if this is intentional, prefix it with an underscore: `_x0`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rf`
[INFO] [stdout]    --> src/submenu.rs:230:21
[INFO] [stdout]     |
[INFO] [stdout] 230 |                 let rf = read_function();
[INFO] [stdout]     |                     ^^ help: if this is intentional, prefix it with an underscore: `_rf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x0`
[INFO] [stdout]    --> src/submenu.rs:232:21
[INFO] [stdout]     |
[INFO] [stdout] 232 |                 let x0 = read_scalar();
[INFO] [stdout]     |                     ^^ help: if this is intentional, prefix it with an underscore: `_x0`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `data`
[INFO] [stdout]    --> src/submenu.rs:264:21
[INFO] [stdout]     |
[INFO] [stdout] 264 |                 let data = read_matrix();
[INFO] [stdout]     |                     ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `data`
[INFO] [stdout]    --> src/submenu.rs:269:21
[INFO] [stdout]     |
[INFO] [stdout] 269 |                 let data = read_matrix();
[INFO] [stdout]     |                     ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `data`
[INFO] [stdout]    --> src/submenu.rs:274:21
[INFO] [stdout]     |
[INFO] [stdout] 274 |                 let data = read_matrix();
[INFO] [stdout]     |                     ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `data`
[INFO] [stdout]    --> src/submenu.rs:279:21
[INFO] [stdout]     |
[INFO] [stdout] 279 |                 let data = read_matrix();
[INFO] [stdout]     |                     ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Matrix` is never constructed
[INFO] [stdout]   --> src/matrix_operations.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub struct Matrix {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/matrix_operations.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 16 | impl Matrix {
[INFO] [stdout]    | ----------- associated function in this implementation
[INFO] [stdout] 17 |     pub fn new(data : Vec<Vec<f64>>) -> Self{
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `linear_algebra_ws` (bin "linear_algebra_ws" test); 18 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   No space left on device (os error 28)
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to parse process output: `/opt/rustwide/rustup-home/toolchains/5de9e0e6cf775e94e0de2003f35e183f3f77bfe8/bin/rustc --crate-name linear_algebra_ws --edition=2021 src/main.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --emit=dep-info,metadata -C embed-bitcode=no -C debuginfo=2 --test --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values())' -C metadata=b7f1565dd56aeb5d -C extra-filename=-57d7309b5496f1cd --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --cap-lints=forbid` (exit status: 0)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "004504cc40b6ae633025e4b7d6ecc749d7db5af41898860aa65417d2ec1f50c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "004504cc40b6ae633025e4b7d6ecc749d7db5af41898860aa65417d2ec1f50c1", kill_on_drop: false }`
[INFO] [stdout] 004504cc40b6ae633025e4b7d6ecc749d7db5af41898860aa65417d2ec1f50c1