[INFO] fetching crate towerofhanoi 0.1.0...
[INFO] testing towerofhanoi-0.1.0 against 1.90.0 for beta-1.91-3
[INFO] extracting crate towerofhanoi 0.1.0 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate towerofhanoi 0.1.0
[INFO] finished tweaking crates.io crate towerofhanoi 0.1.0
[INFO] tweaked toml for crates.io crate towerofhanoi 0.1.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate towerofhanoi 0.1.0 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate towerofhanoi 0.1.0 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" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ee63c91a71c094cca751a62d085d5e00878a36ec488f765c7f92e7007e6b31c7
[INFO] running `Command { std: "docker" "start" "-a" "ee63c91a71c094cca751a62d085d5e00878a36ec488f765c7f92e7007e6b31c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ee63c91a71c094cca751a62d085d5e00878a36ec488f765c7f92e7007e6b31c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ee63c91a71c094cca751a62d085d5e00878a36ec488f765c7f92e7007e6b31c7", kill_on_drop: false }`
[INFO] [stdout] ee63c91a71c094cca751a62d085d5e00878a36ec488f765c7f92e7007e6b31c7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ad6ae979c56256b6c22ef11bce309dc30c3806062d80b40885f6cf72d4cd9364
[INFO] running `Command { std: "docker" "start" "-a" "ad6ae979c56256b6c22ef11bce309dc30c3806062d80b40885f6cf72d4cd9364", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.174
[INFO] [stderr]    Compiling rustix v0.37.28
[INFO] [stderr]    Compiling io-lifetimes v1.0.11
[INFO] [stderr]    Compiling terminal_size v0.2.6
[INFO] [stderr]    Compiling towerofhanoi v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `tower_width`
[INFO] [stdout]    --> src/main.rs:107:9
[INFO] [stdout]     |
[INFO] [stdout] 107 |     let tower_width = (max_size * 2 - 1) as usize + 2; // +2 for the spaces around each disk
[INFO] [stdout]     |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_tower_width`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `highlight`
[INFO] [stdout]    --> src/main.rs:100:83
[INFO] [stdout]     |
[INFO] [stdout] 100 | fn draw_towers(towers: &[Vec<u32>], max_size: u32, move_count: u32, elapsed: u64, highlight: Option<(usize, usize)>) {
[INFO] [stdout]     |                                                                                   ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_highlight`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `TOWER_HEIGHT` is never used
[INFO] [stdout]  --> src/main.rs:8:7
[INFO] [stdout]   |
[INFO] [stdout] 8 | const TOWER_HEIGHT: usize = 12;
[INFO] [stdout]   |       ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BORDER_TOP_LEFT` is never used
[INFO] [stdout]  --> src/main.rs:9:7
[INFO] [stdout]   |
[INFO] [stdout] 9 | const BORDER_TOP_LEFT: &str = "╔";
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BORDER_TOP_RIGHT` is never used
[INFO] [stdout]   --> src/main.rs:10:7
[INFO] [stdout]    |
[INFO] [stdout] 10 | const BORDER_TOP_RIGHT: &str = "╗";
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BORDER_BOTTOM_LEFT` is never used
[INFO] [stdout]   --> src/main.rs:11:7
[INFO] [stdout]    |
[INFO] [stdout] 11 | const BORDER_BOTTOM_LEFT: &str = "╚";
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BORDER_BOTTOM_RIGHT` is never used
[INFO] [stdout]   --> src/main.rs:12:7
[INFO] [stdout]    |
[INFO] [stdout] 12 | const BORDER_BOTTOM_RIGHT: &str = "╝";
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BORDER_HORIZONTAL` is never used
[INFO] [stdout]   --> src/main.rs:13:7
[INFO] [stdout]    |
[INFO] [stdout] 13 | const BORDER_HORIZONTAL: &str = "═";
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BORDER_VERTICAL` is never used
[INFO] [stdout]   --> src/main.rs:14:7
[INFO] [stdout]    |
[INFO] [stdout] 14 | const BORDER_VERTICAL: &str = "║";
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BORDER_TOWER_SEP` is never used
[INFO] [stdout]   --> src/main.rs:15:7
[INFO] [stdout]    |
[INFO] [stdout] 15 | const BORDER_TOWER_SEP: &str = "╬";
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BASE_CHAR` is never used
[INFO] [stdout]   --> src/main.rs:16:7
[INFO] [stdout]    |
[INFO] [stdout] 16 | const BASE_CHAR: &str = "▄";
[INFO] [stdout]    |       ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `DISPLAY_WIDTH` is never used
[INFO] [stdout]   --> src/main.rs:17:7
[INFO] [stdout]    |
[INFO] [stdout] 17 | const DISPLAY_WIDTH: usize = 80; // For centering
[INFO] [stdout]    |       ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `solve_hanoi` is never used
[INFO] [stdout]    --> src/main.rs:211:4
[INFO] [stdout]     |
[INFO] [stdout] 211 | fn solve_hanoi(
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.65s
[INFO] running `Command { std: "docker" "inspect" "ad6ae979c56256b6c22ef11bce309dc30c3806062d80b40885f6cf72d4cd9364", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ad6ae979c56256b6c22ef11bce309dc30c3806062d80b40885f6cf72d4cd9364", kill_on_drop: false }`
[INFO] [stdout] ad6ae979c56256b6c22ef11bce309dc30c3806062d80b40885f6cf72d4cd9364
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1cedf01fe51c5dfe46da550c96aa7c791bb2926e3e8ef5c3da5aa56df875cf80
[INFO] running `Command { std: "docker" "start" "-a" "1cedf01fe51c5dfe46da550c96aa7c791bb2926e3e8ef5c3da5aa56df875cf80", kill_on_drop: false }`
[INFO] [stderr]    Compiling towerofhanoi v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `tower_width`
[INFO] [stdout]    --> src/main.rs:107:9
[INFO] [stdout]     |
[INFO] [stdout] 107 |     let tower_width = (max_size * 2 - 1) as usize + 2; // +2 for the spaces around each disk
[INFO] [stdout]     |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_tower_width`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `highlight`
[INFO] [stdout]    --> src/main.rs:100:83
[INFO] [stdout]     |
[INFO] [stdout] 100 | fn draw_towers(towers: &[Vec<u32>], max_size: u32, move_count: u32, elapsed: u64, highlight: Option<(usize, usize)>) {
[INFO] [stdout]     |                                                                                   ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_highlight`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `TOWER_HEIGHT` is never used
[INFO] [stdout]  --> src/main.rs:8:7
[INFO] [stdout]   |
[INFO] [stdout] 8 | const TOWER_HEIGHT: usize = 12;
[INFO] [stdout]   |       ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BORDER_TOP_LEFT` is never used
[INFO] [stdout]  --> src/main.rs:9:7
[INFO] [stdout]   |
[INFO] [stdout] 9 | const BORDER_TOP_LEFT: &str = "╔";
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BORDER_TOP_RIGHT` is never used
[INFO] [stdout]   --> src/main.rs:10:7
[INFO] [stdout]    |
[INFO] [stdout] 10 | const BORDER_TOP_RIGHT: &str = "╗";
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BORDER_BOTTOM_LEFT` is never used
[INFO] [stdout]   --> src/main.rs:11:7
[INFO] [stdout]    |
[INFO] [stdout] 11 | const BORDER_BOTTOM_LEFT: &str = "╚";
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BORDER_BOTTOM_RIGHT` is never used
[INFO] [stdout]   --> src/main.rs:12:7
[INFO] [stdout]    |
[INFO] [stdout] 12 | const BORDER_BOTTOM_RIGHT: &str = "╝";
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BORDER_HORIZONTAL` is never used
[INFO] [stdout]   --> src/main.rs:13:7
[INFO] [stdout]    |
[INFO] [stdout] 13 | const BORDER_HORIZONTAL: &str = "═";
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BORDER_VERTICAL` is never used
[INFO] [stdout]   --> src/main.rs:14:7
[INFO] [stdout]    |
[INFO] [stdout] 14 | const BORDER_VERTICAL: &str = "║";
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BORDER_TOWER_SEP` is never used
[INFO] [stdout]   --> src/main.rs:15:7
[INFO] [stdout]    |
[INFO] [stdout] 15 | const BORDER_TOWER_SEP: &str = "╬";
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BASE_CHAR` is never used
[INFO] [stdout]   --> src/main.rs:16:7
[INFO] [stdout]    |
[INFO] [stdout] 16 | const BASE_CHAR: &str = "▄";
[INFO] [stdout]    |       ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `DISPLAY_WIDTH` is never used
[INFO] [stdout]   --> src/main.rs:17:7
[INFO] [stdout]    |
[INFO] [stdout] 17 | const DISPLAY_WIDTH: usize = 80; // For centering
[INFO] [stdout]    |       ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `solve_hanoi` is never used
[INFO] [stdout]    --> src/main.rs:211:4
[INFO] [stdout]     |
[INFO] [stdout] 211 | fn solve_hanoi(
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.27s
[INFO] running `Command { std: "docker" "inspect" "1cedf01fe51c5dfe46da550c96aa7c791bb2926e3e8ef5c3da5aa56df875cf80", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1cedf01fe51c5dfe46da550c96aa7c791bb2926e3e8ef5c3da5aa56df875cf80", kill_on_drop: false }`
[INFO] [stdout] 1cedf01fe51c5dfe46da550c96aa7c791bb2926e3e8ef5c3da5aa56df875cf80
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 1d5d564f806024805dda87a93151a507378dce055dbea4a1185f1d55324860dc
[INFO] running `Command { std: "docker" "start" "-a" "1d5d564f806024805dda87a93151a507378dce055dbea4a1185f1d55324860dc", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `tower_width`
[INFO] [stderr]    --> src/main.rs:107:9
[INFO] [stderr]     |
[INFO] [stderr] 107 |     let tower_width = (max_size * 2 - 1) as usize + 2; // +2 for the spaces around each disk
[INFO] [stderr]     |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_tower_width`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `highlight`
[INFO] [stderr]    --> src/main.rs:100:83
[INFO] [stderr]     |
[INFO] [stderr] 100 | fn draw_towers(towers: &[Vec<u32>], max_size: u32, move_count: u32, elapsed: u64, highlight: Option<(usize, usize)>) {
[INFO] [stderr]     |                                                                                   ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_highlight`
[INFO] [stderr] 
[INFO] [stderr] warning: constant `TOWER_HEIGHT` is never used
[INFO] [stderr]  --> src/main.rs:8:7
[INFO] [stderr]   |
[INFO] [stderr] 8 | const TOWER_HEIGHT: usize = 12;
[INFO] [stderr]   |       ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant `BORDER_TOP_LEFT` is never used
[INFO] [stderr]  --> src/main.rs:9:7
[INFO] [stderr]   |
[INFO] [stderr] 9 | const BORDER_TOP_LEFT: &str = "╔";
[INFO] [stderr]   |       ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant `BORDER_TOP_RIGHT` is never used
[INFO] [stderr]   --> src/main.rs:10:7
[INFO] [stderr]    |
[INFO] [stderr] 10 | const BORDER_TOP_RIGHT: &str = "╗";
[INFO] [stderr]    |       ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant `BORDER_BOTTOM_LEFT` is never used
[INFO] [stderr]   --> src/main.rs:11:7
[INFO] [stderr]    |
[INFO] [stderr] 11 | const BORDER_BOTTOM_LEFT: &str = "╚";
[INFO] [stderr]    |       ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant `BORDER_BOTTOM_RIGHT` is never used
[INFO] [stderr]   --> src/main.rs:12:7
[INFO] [stderr]    |
[INFO] [stderr] 12 | const BORDER_BOTTOM_RIGHT: &str = "╝";
[INFO] [stderr]    |       ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant `BORDER_HORIZONTAL` is never used
[INFO] [stderr]   --> src/main.rs:13:7
[INFO] [stderr]    |
[INFO] [stderr] 13 | const BORDER_HORIZONTAL: &str = "═";
[INFO] [stderr]    |       ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant `BORDER_VERTICAL` is never used
[INFO] [stderr]   --> src/main.rs:14:7
[INFO] [stderr]    |
[INFO] [stderr] 14 | const BORDER_VERTICAL: &str = "║";
[INFO] [stderr]    |       ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant `BORDER_TOWER_SEP` is never used
[INFO] [stderr]   --> src/main.rs:15:7
[INFO] [stderr]    |
[INFO] [stderr] 15 | const BORDER_TOWER_SEP: &str = "╬";
[INFO] [stderr]    |       ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant `BASE_CHAR` is never used
[INFO] [stderr]   --> src/main.rs:16:7
[INFO] [stderr]    |
[INFO] [stderr] 16 | const BASE_CHAR: &str = "▄";
[INFO] [stderr]    |       ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant `DISPLAY_WIDTH` is never used
[INFO] [stderr]   --> src/main.rs:17:7
[INFO] [stderr]    |
[INFO] [stderr] 17 | const DISPLAY_WIDTH: usize = 80; // For centering
[INFO] [stderr]    |       ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `solve_hanoi` is never used
[INFO] [stderr]    --> src/main.rs:211:4
[INFO] [stderr]     |
[INFO] [stderr] 211 | fn solve_hanoi(
[INFO] [stderr]     |    ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `towerofhanoi` (bin "towerofhanoi" test) generated 13 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/towerofhanoi-6bec0646425cc4c5)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "1d5d564f806024805dda87a93151a507378dce055dbea4a1185f1d55324860dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1d5d564f806024805dda87a93151a507378dce055dbea4a1185f1d55324860dc", kill_on_drop: false }`
[INFO] [stdout] 1d5d564f806024805dda87a93151a507378dce055dbea4a1185f1d55324860dc